1 line
1.2 MiB
1 line
1.2 MiB
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if (node.leaf) result.push(child);\n else if (contains(bbox, childBBox)) this._all(child, result);\n else nodesToSearch.push(child);\n }\n }\n node = nodesToSearch.pop();\n }\n\n return result;\n },\n\n collides: function (bbox) {\n\n var node = this.data,\n toBBox = this.toBBox;\n\n if (!intersects(bbox, node)) return false;\n\n var nodesToSearch = [],\n i, len, child, childBBox;\n\n while (node) {\n for (i = 0, len = node.children.length; i < len; i++) {\n\n child = node.children[i];\n childBBox = node.leaf ? toBBox(child) : child;\n\n if (intersects(bbox, childBBox)) {\n if (node.leaf || contains(bbox, childBBox)) return true;\n nodesToSearch.push(child);\n }\n }\n node = nodesToSearch.pop();\n }\n\n return false;\n },\n\n load: function (data) {\n if (!(data && data.length)) return this;\n\n if (data.length < this._minEntries) {\n for (var i = 0, len = data.length; i < len; i++) {\n this.insert(data[i]);\n }\n return this;\n }\n\n // recursively build the tree with the given data from scratch using OMT algorithm\n var node = this._build(data.slice(), 0, data.length - 1, 0);\n\n if (!this.data.children.length) {\n // save as is if tree is empty\n this.data = node;\n\n } else if (this.data.height === node.height) {\n // split root if trees have the same height\n this._splitRoot(this.data, node);\n\n } else {\n if (this.data.height < node.height) {\n // swap trees if inserted one is bigger\n var tmpNode = this.data;\n this.data = node;\n node = tmpNode;\n }\n\n // insert the small tree into the large tree at appropriate level\n this._insert(node, this.data.height - node.height - 1, true);\n }\n\n return this;\n },\n\n insert: function (item) {\n if (item) this._insert(item, this.data.height - 1);\n return this;\n },\n\n clear: function () {\n this.data = createNode([]);\n return this;\n },\n\n remove: function (item, equalsFn) {\n if (!item) return this;\n\n var node = this.data,\n bbox = this.toBBox(item),\n path = [],\n indexes = [],\n i, parent, index, goingUp;\n\n // depth-first iterative tree traversal\n while (node || path.length) {\n\n if (!node) { // go up\n node = path.pop();\n parent = path[path.length - 1];\n i = indexes.pop();\n goingUp = true;\n }\n\n if (node.leaf) { // check current node\n index = findItem(item, node.children, equalsFn);\n\n if (index !== -1) {\n // item found, remove the item and condense tree upwards\n node.children.splice(index, 1);\n path.push(node);\n this._condense(path);\n return this;\n }\n }\n\n if (!goingUp && !node.leaf && contains(node, bbox)) { // go down\n path.push(node);\n indexes.push(i);\n i = 0;\n parent = node;\n node = node.children[0];\n\n } else if (parent) { // go right\n i++;\n node = parent.children[i];\n goingUp = false;\n\n } else node = null; // nothing found\n }\n\n return this;\n },\n\n toBBox: function (item) { return item; },\n\n compareMinX: compareNodeMinX,\n compareMinY: compareNodeMinY,\n\n toJSON: function () { return this.data; },\n\n fromJSON: function (data) {\n this.data = data;\n return this;\n },\n\n _all: function (node, result) {\n var nodesToSearch = [];\n while (node) {\n if (node.leaf) result.push.apply(result, node.children);\n else nodesToSearch.push.apply(nodesToSearch, node.children);\n\n node = nodesToSearch.pop();\n }\n return result;\n },\n\n _build: function (items, left, right, height) {\n\n var N = right - left + 1,\n M = this._maxEntries,\n node;\n\n if (N <= M) {\n // reached leaf level; return leaf\n node = createNode(items.slice(left, right + 1));\n calcBBox(node, this.toBBox);\n return node;\n }\n\n if (!height) {\n // target height of the bulk-loaded tree\n height = Math.ceil(Math.log(N) / Math.log(M));\n\n // target number of root entries to maximize storage utilization\n M = Math.ceil(N / Math.pow(M, height - 1));\n }\n\n node = createNode([]);\n node.leaf = false;\n node.height = height;\n\n // split the items into M mostly square tiles\n\n var N2 = Math.ceil(N / M),\n N1 = N2 * Math.ceil(Math.sqrt(M)),\n i, j, right2, right3;\n\n multiSelect(items, left, right, N1, this.compareMinX);\n\n for (i = left; i <= right; i += N1) {\n\n right2 = Math.min(i + N1 - 1, right);\n\n multiSelect(items, i, right2, N2, this.compareMinY);\n\n for (j = i; j <= right2; j += N2) {\n\n right3 = Math.min(j + N2 - 1, right2);\n\n // pack each entry recursively\n node.children.push(this._build(items, j, right3, height - 1));\n }\n }\n\n calcBBox(node, this.toBBox);\n\n return node;\n },\n\n _chooseSubtree: function (bbox, node, level, path) {\n\n var i, len, child, targetNode, area, enlargement, minArea, minEnlargement;\n\n while (true) {\n path.push(node);\n\n if (node.leaf || path.length - 1 === level) break;\n\n minArea = minEnlargement = Infinity;\n\n for (i = 0, len = node.children.length; i < len; i++) {\n child = node.children[i];\n area = bboxArea(child);\n enlargement = enlargedArea(bbox, child) - area;\n\n // choose entry with the least area enlargement\n if (enlargement < minEnlargement) {\n minEnlargement = enlargement;\n minArea = area < minArea ? area : minArea;\n targetNode = child;\n\n } else if (enlargement === minEnlargement) {\n // otherwise choose one with the smallest area\n if (area < minArea) {\n minArea = area;\n targetNode = child;\n }\n }\n }\n\n node = targetNode || node.children[0];\n }\n\n return node;\n },\n\n _insert: function (item, level, isNode) {\n\n var toBBox = this.toBBox,\n bbox = isNode ? item : toBBox(item),\n insertPath = [];\n\n // find the best node for accommodating the item, saving all nodes along the path too\n var node = this._chooseSubtree(bbox, this.data, level, insertPath);\n\n // put the item into the node\n node.children.push(item);\n extend(node, bbox);\n\n // split on node overflow; propagate upwards if necessary\n while (level >= 0) {\n if (insertPath[level].children.length > this._maxEntries) {\n this._split(insertPath, level);\n level--;\n } else break;\n }\n\n // adjust bboxes along the insertion path\n this._adjustParentBBoxes(bbox, insertPath, level);\n },\n\n // split overflowed node into two\n _split: function (insertPath, level) {\n\n var node = insertPath[level],\n M = node.children.length,\n m = this._minEntries;\n\n this._chooseSplitAxis(node, m, M);\n\n var splitIndex = this._chooseSplitIndex(node, m, M);\n\n var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));\n newNode.height = node.height;\n newNode.leaf = node.leaf;\n\n calcBBox(node, this.toBBox);\n calcBBox(newNode, this.toBBox);\n\n if (level) insertPath[level - 1].children.push(newNode);\n else this._splitRoot(node, newNode);\n },\n\n _splitRoot: function (node, newNode) {\n // split root node\n this.data = createNode([node, newNode]);\n this.data.height = node.height + 1;\n this.data.leaf = false;\n calcBBox(this.data, this.toBBox);\n },\n\n _chooseSplitIndex: function (node, m, M) {\n\n var i, bbox1, bbox2, overlap, area, minOverlap, minArea, index;\n\n minOverlap = minArea = Infinity;\n\n for (i = m; i <= M - m; i++) {\n bbox1 = distBBox(node, 0, i, this.toBBox);\n bbox2 = distBBox(node, i, M, this.toBBox);\n\n overlap = intersectionArea(bbox1, bbox2);\n area = bboxArea(bbox1) + bboxArea(bbox2);\n\n // choose distribution with minimum overlap\n if (overlap < minOverlap) {\n minOverlap = overlap;\n index = i;\n\n minArea = area < minArea ? area : minArea;\n\n } else if (overlap === minOverlap) {\n // otherwise choose distribution with minimum area\n if (area < minArea) {\n minArea = area;\n index = i;\n }\n }\n }\n\n return index;\n },\n\n // sorts node children by the best axis for split\n _chooseSplitAxis: function (node, m, M) {\n\n var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX,\n compareMinY = node.leaf ? this.compareMinY : compareNodeMinY,\n xMargin = this._allDistMargin(node, m, M, compareMinX),\n yMargin = this._allDistMargin(node, m, M, compareMinY);\n\n // if total distributions margin value is minimal for x, sort by minX,\n // otherwise it's already sorted by minY\n if (xMargin < yMargin) node.children.sort(compareMinX);\n },\n\n // total margin of all possible split distributions where each node is at least m full\n _allDistMargin: function (node, m, M, compare) {\n\n node.children.sort(compare);\n\n var toBBox = this.toBBox,\n leftBBox = distBBox(node, 0, m, toBBox),\n rightBBox = distBBox(node, M - m, M, toBBox),\n margin = bboxMargin(leftBBox) + bboxMargin(rightBBox),\n i, child;\n\n for (i = m; i < M - m; i++) {\n child = node.children[i];\n extend(leftBBox, node.leaf ? toBBox(child) : child);\n margin += bboxMargin(leftBBox);\n }\n\n for (i = M - m - 1; i >= m; i--) {\n child = node.children[i];\n extend(rightBBox, node.leaf ? toBBox(child) : child);\n margin += bboxMargin(rightBBox);\n }\n\n return margin;\n },\n\n _adjustParentBBoxes: function (bbox, path, level) {\n // adjust bboxes along the given tree path\n for (var i = level; i >= 0; i--) {\n extend(path[i], bbox);\n }\n },\n\n _condense: function (path) {\n // go through the path, removing empty nodes and updating bboxes\n for (var i = path.length - 1, siblings; i >= 0; i--) {\n if (path[i].children.length === 0) {\n if (i > 0) {\n siblings = path[i - 1].children;\n siblings.splice(siblings.indexOf(path[i]), 1);\n\n } else this.clear();\n\n } else calcBBox(path[i], this.toBBox);\n }\n },\n\n _initFormat: function (format) {\n // data format (minX, minY, maxX, maxY accessors)\n\n // uses eval-type function compilation instead of just accepting a toBBox function\n // because the algorithms are very sensitive to sorting functions performance,\n // so they should be dead simple and without inner calls\n\n var compareArr = ['return a', ' - b', ';'];\n\n this.compareMinX = new Function('a', 'b', compareArr.join(format[0]));\n this.compareMinY = new Function('a', 'b', compareArr.join(format[1]));\n\n this.toBBox = new Function('a',\n 'return {minX: a' + format[0] +\n ', minY: a' + format[1] +\n ', maxX: a' + format[2] +\n ', maxY: a' + format[3] + '};');\n }\n};\n\nfunction findItem(item, items, equalsFn) {\n if (!equalsFn) return items.indexOf(item);\n\n for (var i = 0; i < items.length; i++) {\n if (equalsFn(item, items[i])) return i;\n }\n return -1;\n}\n\n// calculate node's bbox from bboxes of its children\nfunction calcBBox(node, toBBox) {\n distBBox(node, 0, node.children.length, toBBox, node);\n}\n\n// min bounding rectangle of node children from k to p-1\nfunction distBBox(node, k, p, toBBox, destNode) {\n if (!destNode) destNode = createNode(null);\n destNode.minX = Infinity;\n destNode.minY = Infinity;\n destNode.maxX = -Infinity;\n destNode.maxY = -Infinity;\n\n for (var i = k, child; i < p; i++) {\n child = node.children[i];\n extend(destNode, node.leaf ? toBBox(child) : child);\n }\n\n return destNode;\n}\n\nfunction extend(a, b) {\n a.minX = Math.min(a.minX, b.minX);\n a.minY = Math.min(a.minY, b.minY);\n a.maxX = Math.max(a.maxX, b.maxX);\n a.maxY = Math.max(a.maxY, b.maxY);\n return a;\n}\n\nfunction compareNodeMinX(a, b) { return a.minX - b.minX; }\nfunction compareNodeMinY(a, b) { return a.minY - b.minY; }\n\nfunction bboxArea(a) { return (a.maxX - a.minX) * (a.maxY - a.minY); }\nfunction bboxMargin(a) { return (a.maxX - a.minX) + (a.maxY - a.minY); }\n\nfunction enlargedArea(a, b) {\n return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) *\n (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));\n}\n\nfunction intersectionArea(a, b) {\n var minX = Math.max(a.minX, b.minX),\n minY = Math.max(a.minY, b.minY),\n maxX = Math.min(a.maxX, b.maxX),\n maxY = Math.min(a.maxY, b.maxY);\n\n return Math.max(0, maxX - minX) *\n Math.max(0, maxY - minY);\n}\n\nfunction contains(a, b) {\n return a.minX <= b.minX &&\n a.minY <= b.minY &&\n b.maxX <= a.maxX &&\n b.maxY <= a.maxY;\n}\n\nfunction intersects(a, b) {\n return b.minX <= a.maxX &&\n b.minY <= a.maxY &&\n b.maxX >= a.minX &&\n b.maxY >= a.minY;\n}\n\nfunction createNode(children) {\n return {\n children: children,\n height: 1,\n leaf: true,\n minX: Infinity,\n minY: Infinity,\n maxX: -Infinity,\n maxY: -Infinity\n };\n}\n\n// sort an array so that items come in groups of n unsorted items, with groups sorted between each other;\n// combines selection algorithm with binary divide & conquer approach\n\nfunction multiSelect(arr, left, right, n, compare) {\n var stack = [left, right],\n mid;\n\n while (stack.length) {\n right = stack.pop();\n left = stack.pop();\n\n if (right - left <= n) continue;\n\n mid = left + Math.ceil((right - left) / n / 2) * n;\n quickselect(arr, mid, left, right, compare);\n\n stack.push(left, mid, mid, right);\n }\n}\n","(function (global, factory) {\n\ttypeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n\ttypeof define === 'function' && define.amd ? define(factory) :\n\t(global.quickselect = factory());\n}(this, (function () { 'use strict';\n\nfunction quickselect(arr, k, left, right, compare) {\n quickselectStep(arr, k, left || 0, right || (arr.length - 1), compare || defaultCompare);\n}\n\nfunction quickselectStep(arr, k, left, right, compare) {\n\n while (right > left) {\n if (right - left > 600) {\n var n = right - left + 1;\n var m = k - left + 1;\n var z = Math.log(n);\n var s = 0.5 * Math.exp(2 * z / 3);\n var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n quickselectStep(arr, k, newLeft, newRight, compare);\n }\n\n var t = arr[k];\n var i = left;\n var j = right;\n\n swap(arr, left, k);\n if (compare(arr[right], t) > 0) swap(arr, left, right);\n\n while (i < j) {\n swap(arr, i, j);\n i++;\n j--;\n while (compare(arr[i], t) < 0) i++;\n while (compare(arr[j], t) > 0) j--;\n }\n\n if (compare(arr[left], t) === 0) swap(arr, left, j);\n else {\n j++;\n swap(arr, j, right);\n }\n\n if (j <= k) left = j + 1;\n if (k <= j) right = j - 1;\n }\n}\n\nfunction swap(arr, i, j) {\n var tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\nfunction defaultCompare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\n\nreturn quickselect;\n\n})));\n","// extracted by mini-css-extract-plugin","/**\n * @module ol/util\n */\n\n/**\n * @return {?} Any return.\n */\nexport function abstract() {\n return /** @type {?} */ ((function() {\n throw new Error('Unimplemented abstract method.');\n })());\n}\n\n/**\n * Inherit the prototype methods from one constructor into another.\n *\n * Usage:\n *\n * function ParentClass(a, b) { }\n * ParentClass.prototype.foo = function(a) { }\n *\n * function ChildClass(a, b, c) {\n * // Call parent constructor\n * ParentClass.call(this, a, b);\n * }\n * inherits(ChildClass, ParentClass);\n *\n * var child = new ChildClass('a', 'b', 'see');\n * child.foo(); // This works.\n *\n * @param {!Function} childCtor Child constructor.\n * @param {!Function} parentCtor Parent constructor.\n * @function module:ol.inherits\n * @deprecated\n * @api\n */\nexport function inherits(childCtor, parentCtor) {\n childCtor.prototype = Object.create(parentCtor.prototype);\n childCtor.prototype.constructor = childCtor;\n}\n\n/**\n * Counter for getUid.\n * @type {number}\n * @private\n */\nvar uidCounter_ = 0;\n\n/**\n * Gets a unique ID for an object. This mutates the object so that further calls\n * with the same object as a parameter returns the same value. Unique IDs are generated\n * as a strictly increasing sequence. Adapted from goog.getUid.\n *\n * @param {Object} obj The object to get the unique ID for.\n * @return {string} The unique ID for the object.\n * @function module:ol.getUid\n * @api\n */\nexport function getUid(obj) {\n return obj.ol_uid || (obj.ol_uid = String(++uidCounter_));\n}\n\n/**\n * OpenLayers version.\n * @type {string}\n */\nexport var VERSION = '5.3.3';\n\n//# sourceMappingURL=util.js.map","/**\n * @module ol/AssertionError\n */\nimport {VERSION} from './util.js';\n\n/**\n * Error object thrown when an assertion failed. This is an ECMA-262 Error,\n * extended with a `code` property.\n * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error.\n */\nvar AssertionError = /*@__PURE__*/(function (Error) {\n function AssertionError(code) {\n var path = VERSION === 'latest' ? VERSION : 'v' + VERSION.split('-')[0];\n var message = 'Assertion failed. See https://openlayers.org/en/' + path +\n '/doc/errors/#' + code + ' for details.';\n\n Error.call(this, message);\n\n /**\n * Error code. The meaning of the code can be found on\n * https://openlayers.org/en/latest/doc/errors/ (replace `latest` with\n * the version found in the OpenLayers script's header comment if a version\n * other than the latest is used).\n * @type {number}\n * @api\n */\n this.code = code;\n\n /**\n * @type {string}\n */\n this.name = 'AssertionError';\n\n // Re-assign message, see https://github.com/Rich-Harris/buble/issues/40\n this.message = message;\n }\n\n if ( Error ) AssertionError.__proto__ = Error;\n AssertionError.prototype = Object.create( Error && Error.prototype );\n AssertionError.prototype.constructor = AssertionError;\n\n return AssertionError;\n}(Error));\n\nexport default AssertionError;\n\n//# sourceMappingURL=AssertionError.js.map","/**\n * @module ol/CollectionEventType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n /**\n * Triggered when an item is added to the collection.\n * @event module:ol/Collection.CollectionEvent#add\n * @api\n */\n ADD: 'add',\n /**\n * Triggered when an item is removed from the collection.\n * @event module:ol/Collection.CollectionEvent#remove\n * @api\n */\n REMOVE: 'remove'\n};\n\n//# sourceMappingURL=CollectionEventType.js.map","/**\n * @module ol/ObjectEventType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n /**\n * Triggered when a property is changed.\n * @event module:ol/Object.ObjectEvent#propertychange\n * @api\n */\n PROPERTYCHANGE: 'propertychange'\n};\n\n//# sourceMappingURL=ObjectEventType.js.map","/**\n * @module ol/obj\n */\n\n\n/**\n * Polyfill for Object.assign(). Assigns enumerable and own properties from\n * one or more source objects to a target object.\n * See https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign.\n *\n * @param {!Object} target The target object.\n * @param {...Object} var_sources The source object(s).\n * @return {!Object} The modified target object.\n */\nexport var assign = (typeof Object.assign === 'function') ? Object.assign : function(target, var_sources) {\n var arguments$1 = arguments;\n\n if (target === undefined || target === null) {\n throw new TypeError('Cannot convert undefined or null to object');\n }\n\n var output = Object(target);\n for (var i = 1, ii = arguments.length; i < ii; ++i) {\n var source = arguments$1[i];\n if (source !== undefined && source !== null) {\n for (var key in source) {\n if (source.hasOwnProperty(key)) {\n output[key] = source[key];\n }\n }\n }\n }\n return output;\n};\n\n\n/**\n * Removes all properties from an object.\n * @param {Object} object The object to clear.\n */\nexport function clear(object) {\n for (var property in object) {\n delete object[property];\n }\n}\n\n\n/**\n * Get an array of property values from an object.\n * @param {Object<K,V>} object The object from which to get the values.\n * @return {!Array<V>} The property values.\n * @template K,V\n */\nexport function getValues(object) {\n var values = [];\n for (var property in object) {\n values.push(object[property]);\n }\n return values;\n}\n\n\n/**\n * Determine if an object has any properties.\n * @param {Object} object The object to check.\n * @return {boolean} The object is empty.\n */\nexport function isEmpty(object) {\n var property;\n for (property in object) {\n return false;\n }\n return !property;\n}\n\n//# sourceMappingURL=obj.js.map","/**\n * @module ol/events\n */\nimport {clear} from './obj.js';\n\n\n/**\n * Key to use with {@link module:ol/Observable~Observable#unByKey}.\n * @typedef {Object} EventsKey\n * @property {Object} [bindTo]\n * @property {ListenerFunction} [boundListener]\n * @property {boolean} callOnce\n * @property {number} [deleteIndex]\n * @property {ListenerFunction} listener\n * @property {import(\"./events/Target.js\").EventTargetLike} target\n * @property {string} type\n * @api\n */\n\n\n/**\n * Listener function. This function is called with an event object as argument.\n * When the function returns `false`, event propagation will stop.\n *\n * @typedef {function((Event|import(\"./events/Event.js\").default)): (void|boolean)} ListenerFunction\n * @api\n */\n\n\n/**\n * @param {EventsKey} listenerObj Listener object.\n * @return {ListenerFunction} Bound listener.\n */\nexport function bindListener(listenerObj) {\n var boundListener = function(evt) {\n var listener = listenerObj.listener;\n var bindTo = listenerObj.bindTo || listenerObj.target;\n if (listenerObj.callOnce) {\n unlistenByKey(listenerObj);\n }\n return listener.call(bindTo, evt);\n };\n listenerObj.boundListener = boundListener;\n return boundListener;\n}\n\n\n/**\n * Finds the matching {@link module:ol/events~EventsKey} in the given listener\n * array.\n *\n * @param {!Array<!EventsKey>} listeners Array of listeners.\n * @param {!Function} listener The listener function.\n * @param {Object=} opt_this The `this` value inside the listener.\n * @param {boolean=} opt_setDeleteIndex Set the deleteIndex on the matching\n * listener, for {@link module:ol/events~unlistenByKey}.\n * @return {EventsKey|undefined} The matching listener object.\n */\nexport function findListener(listeners, listener, opt_this, opt_setDeleteIndex) {\n var listenerObj;\n for (var i = 0, ii = listeners.length; i < ii; ++i) {\n listenerObj = listeners[i];\n if (listenerObj.listener === listener &&\n listenerObj.bindTo === opt_this) {\n if (opt_setDeleteIndex) {\n listenerObj.deleteIndex = i;\n }\n return listenerObj;\n }\n }\n return undefined;\n}\n\n\n/**\n * @param {import(\"./events/Target.js\").EventTargetLike} target Target.\n * @param {string} type Type.\n * @return {Array<EventsKey>|undefined} Listeners.\n */\nexport function getListeners(target, type) {\n var listenerMap = getListenerMap(target);\n return listenerMap ? listenerMap[type] : undefined;\n}\n\n\n/**\n * Get the lookup of listeners.\n * @param {Object} target Target.\n * @param {boolean=} opt_create If a map should be created if it doesn't exist.\n * @return {!Object<string, Array<EventsKey>>} Map of\n * listeners by event type.\n */\nfunction getListenerMap(target, opt_create) {\n var listenerMap = target.ol_lm;\n if (!listenerMap && opt_create) {\n listenerMap = target.ol_lm = {};\n }\n return listenerMap;\n}\n\n\n/**\n * Remove the listener map from a target.\n * @param {Object} target Target.\n */\nfunction removeListenerMap(target) {\n delete target.ol_lm;\n}\n\n\n/**\n * Clean up all listener objects of the given type. All properties on the\n * listener objects will be removed, and if no listeners remain in the listener\n * map, it will be removed from the target.\n * @param {import(\"./events/Target.js\").EventTargetLike} target Target.\n * @param {string} type Type.\n */\nfunction removeListeners(target, type) {\n var listeners = getListeners(target, type);\n if (listeners) {\n for (var i = 0, ii = listeners.length; i < ii; ++i) {\n /** @type {import(\"./events/Target.js\").default} */ (target).\n removeEventListener(type, listeners[i].boundListener);\n clear(listeners[i]);\n }\n listeners.length = 0;\n var listenerMap = getListenerMap(target);\n if (listenerMap) {\n delete listenerMap[type];\n if (Object.keys(listenerMap).length === 0) {\n removeListenerMap(target);\n }\n }\n }\n}\n\n\n/**\n * Registers an event listener on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * This function efficiently binds a `listener` to a `this` object, and returns\n * a key for use with {@link module:ol/events~unlistenByKey}.\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Event target.\n * @param {string} type Event type.\n * @param {ListenerFunction} listener Listener.\n * @param {Object=} opt_this Object referenced by the `this` keyword in the\n * listener. Default is the `target`.\n * @param {boolean=} opt_once If true, add the listener as one-off listener.\n * @return {EventsKey} Unique key for the listener.\n */\nexport function listen(target, type, listener, opt_this, opt_once) {\n var listenerMap = getListenerMap(target, true);\n var listeners = listenerMap[type];\n if (!listeners) {\n listeners = listenerMap[type] = [];\n }\n var listenerObj = findListener(listeners, listener, opt_this, false);\n if (listenerObj) {\n if (!opt_once) {\n // Turn one-off listener into a permanent one.\n listenerObj.callOnce = false;\n }\n } else {\n listenerObj = /** @type {EventsKey} */ ({\n bindTo: opt_this,\n callOnce: !!opt_once,\n listener: listener,\n target: target,\n type: type\n });\n /** @type {import(\"./events/Target.js\").default} */ (target).\n addEventListener(type, bindListener(listenerObj));\n listeners.push(listenerObj);\n }\n\n return listenerObj;\n}\n\n\n/**\n * Registers a one-off event listener on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * This function efficiently binds a `listener` as self-unregistering listener\n * to a `this` object, and returns a key for use with\n * {@link module:ol/events~unlistenByKey} in case the listener needs to be\n * unregistered before it is called.\n *\n * When {@link module:ol/events~listen} is called with the same arguments after this\n * function, the self-unregistering listener will be turned into a permanent\n * listener.\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Event target.\n * @param {string} type Event type.\n * @param {ListenerFunction} listener Listener.\n * @param {Object=} opt_this Object referenced by the `this` keyword in the\n * listener. Default is the `target`.\n * @return {EventsKey} Key for unlistenByKey.\n */\nexport function listenOnce(target, type, listener, opt_this) {\n return listen(target, type, listener, opt_this, true);\n}\n\n\n/**\n * Unregisters an event listener on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * To return a listener, this function needs to be called with the exact same\n * arguments that were used for a previous {@link module:ol/events~listen} call.\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Event target.\n * @param {string} type Event type.\n * @param {ListenerFunction} listener Listener.\n * @param {Object=} opt_this Object referenced by the `this` keyword in the\n * listener. Default is the `target`.\n */\nexport function unlisten(target, type, listener, opt_this) {\n var listeners = getListeners(target, type);\n if (listeners) {\n var listenerObj = findListener(listeners, listener, opt_this, true);\n if (listenerObj) {\n unlistenByKey(listenerObj);\n }\n }\n}\n\n\n/**\n * Unregisters event listeners on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * The argument passed to this function is the key returned from\n * {@link module:ol/events~listen} or {@link module:ol/events~listenOnce}.\n *\n * @param {EventsKey} key The key.\n */\nexport function unlistenByKey(key) {\n if (key && key.target) {\n /** @type {import(\"./events/Target.js\").default} */ (key.target).\n removeEventListener(key.type, key.boundListener);\n var listeners = getListeners(key.target, key.type);\n if (listeners) {\n var i = 'deleteIndex' in key ? key.deleteIndex : listeners.indexOf(key);\n if (i !== -1) {\n listeners.splice(i, 1);\n }\n if (listeners.length === 0) {\n removeListeners(key.target, key.type);\n }\n }\n clear(key);\n }\n}\n\n\n/**\n * Unregisters all event listeners on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Target.\n */\nexport function unlistenAll(target) {\n var listenerMap = getListenerMap(target);\n if (listenerMap) {\n for (var type in listenerMap) {\n removeListeners(target, type);\n }\n }\n}\n\n//# sourceMappingURL=events.js.map","/**\n * @module ol/Disposable\n */\n\n/**\n * @classdesc\n * Objects that need to clean up after themselves.\n */\nvar Disposable = function Disposable() {\n /**\n * The object has already been disposed.\n * @type {boolean}\n * @private\n */\n this.disposed_ = false;\n};\n\n/**\n * Clean up.\n */\nDisposable.prototype.dispose = function dispose () {\n if (!this.disposed_) {\n this.disposed_ = true;\n this.disposeInternal();\n }\n};\n\n/**\n * Extension point for disposable objects.\n * @protected\n */\nDisposable.prototype.disposeInternal = function disposeInternal () {};\n\nexport default Disposable;\n\n//# sourceMappingURL=Disposable.js.map","/**\n * @module ol/functions\n */\n\n/**\n * Always returns true.\n * @returns {boolean} true.\n */\nexport function TRUE() {\n return true;\n}\n\n/**\n * Always returns false.\n * @returns {boolean} false.\n */\nexport function FALSE() {\n return false;\n}\n\n/**\n * A reusable function, used e.g. as a default for callbacks.\n *\n * @return {void} Nothing.\n */\nexport function VOID() {}\n\n//# sourceMappingURL=functions.js.map","/**\n * @module ol/events/Event\n */\n\n/**\n * @classdesc\n * Stripped down implementation of the W3C DOM Level 2 Event interface.\n * See https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface.\n *\n * This implementation only provides `type` and `target` properties, and\n * `stopPropagation` and `preventDefault` methods. It is meant as base class\n * for higher level events defined in the library, and works with\n * {@link module:ol/events/Target~Target}.\n */\nvar Event = function Event(type) {\n\n /**\n * @type {boolean}\n */\n this.propagationStopped;\n\n /**\n * The event type.\n * @type {string}\n * @api\n */\n this.type = type;\n\n /**\n * The event target.\n * @type {Object}\n * @api\n */\n this.target = null;\n};\n\n/**\n * Stop event propagation.\n * @api\n */\nEvent.prototype.preventDefault = function preventDefault () {\n this.propagationStopped = true;\n};\n\n/**\n * Stop event propagation.\n * @api\n */\nEvent.prototype.stopPropagation = function stopPropagation () {\n this.propagationStopped = true;\n};\n\n\n/**\n * @param {Event|import(\"./Event.js\").default} evt Event\n */\nexport function stopPropagation(evt) {\n evt.stopPropagation();\n}\n\n\n/**\n * @param {Event|import(\"./Event.js\").default} evt Event\n */\nexport function preventDefault(evt) {\n evt.preventDefault();\n}\n\nexport default Event;\n\n//# sourceMappingURL=Event.js.map","/**\n * @module ol/events/Target\n */\nimport Disposable from '../Disposable.js';\nimport {unlistenAll} from '../events.js';\nimport {VOID} from '../functions.js';\nimport Event from './Event.js';\n\n\n/**\n * @typedef {EventTarget|Target} EventTargetLike\n */\n\n\n/**\n * @classdesc\n * A simplified implementation of the W3C DOM Level 2 EventTarget interface.\n * See https://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-EventTarget.\n *\n * There are two important simplifications compared to the specification:\n *\n * 1. The handling of `useCapture` in `addEventListener` and\n * `removeEventListener`. There is no real capture model.\n * 2. The handling of `stopPropagation` and `preventDefault` on `dispatchEvent`.\n * There is no event target hierarchy. When a listener calls\n * `stopPropagation` or `preventDefault` on an event object, it means that no\n * more listeners after this one will be called. Same as when the listener\n * returns false.\n */\nvar Target = /*@__PURE__*/(function (Disposable) {\n function Target() {\n\n Disposable.call(this);\n\n /**\n * @private\n * @type {!Object<string, number>}\n */\n this.pendingRemovals_ = {};\n\n /**\n * @private\n * @type {!Object<string, number>}\n */\n this.dispatching_ = {};\n\n /**\n * @private\n * @type {!Object<string, Array<import(\"../events.js\").ListenerFunction>>}\n */\n this.listeners_ = {};\n\n }\n\n if ( Disposable ) Target.__proto__ = Disposable;\n Target.prototype = Object.create( Disposable && Disposable.prototype );\n Target.prototype.constructor = Target;\n\n /**\n * @param {string} type Type.\n * @param {import(\"../events.js\").ListenerFunction} listener Listener.\n */\n Target.prototype.addEventListener = function addEventListener (type, listener) {\n var listeners = this.listeners_[type];\n if (!listeners) {\n listeners = this.listeners_[type] = [];\n }\n if (listeners.indexOf(listener) === -1) {\n listeners.push(listener);\n }\n };\n\n /**\n * Dispatches an event and calls all listeners listening for events\n * of this type. The event parameter can either be a string or an\n * Object with a `type` property.\n *\n * @param {{type: string,\n * target: (EventTargetLike|undefined),\n * propagationStopped: (boolean|undefined)}|\n * import(\"./Event.js\").default|string} event Event object.\n * @return {boolean|undefined} `false` if anyone called preventDefault on the\n * event object or if any of the listeners returned false.\n * @api\n */\n Target.prototype.dispatchEvent = function dispatchEvent (event) {\n var evt = typeof event === 'string' ? new Event(event) : event;\n var type = evt.type;\n evt.target = this;\n var listeners = this.listeners_[type];\n var propagate;\n if (listeners) {\n if (!(type in this.dispatching_)) {\n this.dispatching_[type] = 0;\n this.pendingRemovals_[type] = 0;\n }\n ++this.dispatching_[type];\n for (var i = 0, ii = listeners.length; i < ii; ++i) {\n if (listeners[i].call(this, evt) === false || evt.propagationStopped) {\n propagate = false;\n break;\n }\n }\n --this.dispatching_[type];\n if (this.dispatching_[type] === 0) {\n var pendingRemovals = this.pendingRemovals_[type];\n delete this.pendingRemovals_[type];\n while (pendingRemovals--) {\n this.removeEventListener(type, VOID);\n }\n delete this.dispatching_[type];\n }\n return propagate;\n }\n };\n\n /**\n * @inheritDoc\n */\n Target.prototype.disposeInternal = function disposeInternal () {\n unlistenAll(this);\n };\n\n /**\n * Get the listeners for a specified event type. Listeners are returned in the\n * order that they will be called in.\n *\n * @param {string} type Type.\n * @return {Array<import(\"../events.js\").ListenerFunction>} Listeners.\n */\n Target.prototype.getListeners = function getListeners (type) {\n return this.listeners_[type];\n };\n\n /**\n * @param {string=} opt_type Type. If not provided,\n * `true` will be returned if this event target has any listeners.\n * @return {boolean} Has listeners.\n */\n Target.prototype.hasListener = function hasListener (opt_type) {\n return opt_type ?\n opt_type in this.listeners_ :\n Object.keys(this.listeners_).length > 0;\n };\n\n /**\n * @param {string} type Type.\n * @param {import(\"../events.js\").ListenerFunction} listener Listener.\n */\n Target.prototype.removeEventListener = function removeEventListener (type, listener) {\n var listeners = this.listeners_[type];\n if (listeners) {\n var index = listeners.indexOf(listener);\n if (type in this.pendingRemovals_) {\n // make listener a no-op, and remove later in #dispatchEvent()\n listeners[index] = VOID;\n ++this.pendingRemovals_[type];\n } else {\n listeners.splice(index, 1);\n if (listeners.length === 0) {\n delete this.listeners_[type];\n }\n }\n }\n };\n\n return Target;\n}(Disposable));\n\n\nexport default Target;\n\n//# sourceMappingURL=Target.js.map","/**\n * @module ol/events/EventType\n */\n\n/**\n * @enum {string}\n * @const\n */\nexport default {\n /**\n * Generic change event. Triggered when the revision counter is increased.\n * @event module:ol/events/Event~Event#change\n * @api\n */\n CHANGE: 'change',\n\n CLEAR: 'clear',\n CONTEXTMENU: 'contextmenu',\n CLICK: 'click',\n DBLCLICK: 'dblclick',\n DRAGENTER: 'dragenter',\n DRAGOVER: 'dragover',\n DROP: 'drop',\n ERROR: 'error',\n KEYDOWN: 'keydown',\n KEYPRESS: 'keypress',\n LOAD: 'load',\n MOUSEDOWN: 'mousedown',\n MOUSEMOVE: 'mousemove',\n MOUSEOUT: 'mouseout',\n MOUSEUP: 'mouseup',\n MOUSEWHEEL: 'mousewheel',\n MSPOINTERDOWN: 'MSPointerDown',\n RESIZE: 'resize',\n TOUCHSTART: 'touchstart',\n TOUCHMOVE: 'touchmove',\n TOUCHEND: 'touchend',\n WHEEL: 'wheel'\n};\n\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/Observable\n */\nimport {listen, unlistenByKey, unlisten, listenOnce} from './events.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * An event target providing convenient methods for listener registration\n * and unregistration. A generic `change` event is always available through\n * {@link module:ol/Observable~Observable#changed}.\n *\n * @fires import(\"./events/Event.js\").Event\n * @api\n */\nvar Observable = /*@__PURE__*/(function (EventTarget) {\n function Observable() {\n\n EventTarget.call(this);\n\n /**\n * @private\n * @type {number}\n */\n this.revision_ = 0;\n\n }\n\n if ( EventTarget ) Observable.__proto__ = EventTarget;\n Observable.prototype = Object.create( EventTarget && EventTarget.prototype );\n Observable.prototype.constructor = Observable;\n\n /**\n * Increases the revision counter and dispatches a 'change' event.\n * @api\n */\n Observable.prototype.changed = function changed () {\n ++this.revision_;\n this.dispatchEvent(EventType.CHANGE);\n };\n\n /**\n * Get the version number for this object. Each time the object is modified,\n * its version number will be incremented.\n * @return {number} Revision.\n * @api\n */\n Observable.prototype.getRevision = function getRevision () {\n return this.revision_;\n };\n\n /**\n * Listen for a certain type of event.\n * @param {string|Array<string>} type The event type or array of event types.\n * @param {function(?): ?} listener The listener function.\n * @return {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} Unique key for the listener. If\n * called with an array of event types as the first argument, the return\n * will be an array of keys.\n * @api\n */\n Observable.prototype.on = function on (type, listener) {\n if (Array.isArray(type)) {\n var len = type.length;\n var keys = new Array(len);\n for (var i = 0; i < len; ++i) {\n keys[i] = listen(this, type[i], listener);\n }\n return keys;\n } else {\n return listen(this, /** @type {string} */ (type), listener);\n }\n };\n\n /**\n * Listen once for a certain type of event.\n * @param {string|Array<string>} type The event type or array of event types.\n * @param {function(?): ?} listener The listener function.\n * @return {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} Unique key for the listener. If\n * called with an array of event types as the first argument, the return\n * will be an array of keys.\n * @api\n */\n Observable.prototype.once = function once (type, listener) {\n if (Array.isArray(type)) {\n var len = type.length;\n var keys = new Array(len);\n for (var i = 0; i < len; ++i) {\n keys[i] = listenOnce(this, type[i], listener);\n }\n return keys;\n } else {\n return listenOnce(this, /** @type {string} */ (type), listener);\n }\n };\n\n /**\n * Unlisten for a certain type of event.\n * @param {string|Array<string>} type The event type or array of event types.\n * @param {function(?): ?} listener The listener function.\n * @api\n */\n Observable.prototype.un = function un (type, listener) {\n if (Array.isArray(type)) {\n for (var i = 0, ii = type.length; i < ii; ++i) {\n unlisten(this, type[i], listener);\n }\n return;\n } else {\n unlisten(this, /** @type {string} */ (type), listener);\n }\n };\n\n return Observable;\n}(EventTarget));\n\n\n/**\n * Removes an event listener using the key returned by `on()` or `once()`.\n * @param {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} key The key returned by `on()`\n * or `once()` (or an array of keys).\n * @api\n */\nexport function unByKey(key) {\n if (Array.isArray(key)) {\n for (var i = 0, ii = key.length; i < ii; ++i) {\n unlistenByKey(key[i]);\n }\n } else {\n unlistenByKey(/** @type {import(\"./events.js\").EventsKey} */ (key));\n }\n}\n\n\nexport default Observable;\n\n//# sourceMappingURL=Observable.js.map","/**\n * @module ol/Object\n */\nimport {getUid} from './util.js';\nimport ObjectEventType from './ObjectEventType.js';\nimport Observable from './Observable.js';\nimport Event from './events/Event.js';\nimport {assign} from './obj.js';\n\n\n/**\n * @classdesc\n * Events emitted by {@link module:ol/Object~BaseObject} instances are instances of this type.\n */\nexport var ObjectEvent = /*@__PURE__*/(function (Event) {\n function ObjectEvent(type, key, oldValue) {\n Event.call(this, type);\n\n /**\n * The name of the property whose value is changing.\n * @type {string}\n * @api\n */\n this.key = key;\n\n /**\n * The old value. To get the new value use `e.target.get(e.key)` where\n * `e` is the event object.\n * @type {*}\n * @api\n */\n this.oldValue = oldValue;\n\n }\n\n if ( Event ) ObjectEvent.__proto__ = Event;\n ObjectEvent.prototype = Object.create( Event && Event.prototype );\n ObjectEvent.prototype.constructor = ObjectEvent;\n\n return ObjectEvent;\n}(Event));\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Most non-trivial classes inherit from this.\n *\n * This extends {@link module:ol/Observable} with observable\n * properties, where each property is observable as well as the object as a\n * whole.\n *\n * Classes that inherit from this have pre-defined properties, to which you can\n * add your owns. The pre-defined properties are listed in this documentation as\n * 'Observable Properties', and have their own accessors; for example,\n * {@link module:ol/Map~Map} has a `target` property, accessed with\n * `getTarget()` and changed with `setTarget()`. Not all properties are however\n * settable. There are also general-purpose accessors `get()` and `set()`. For\n * example, `get('target')` is equivalent to `getTarget()`.\n *\n * The `set` accessors trigger a change event, and you can monitor this by\n * registering a listener. For example, {@link module:ol/View~View} has a\n * `center` property, so `view.on('change:center', function(evt) {...});` would\n * call the function whenever the value of the center property changes. Within\n * the function, `evt.target` would be the view, so `evt.target.getCenter()`\n * would return the new center.\n *\n * You can add your own observable properties with\n * `object.set('prop', 'value')`, and retrieve that with `object.get('prop')`.\n * You can listen for changes on that property value with\n * `object.on('change:prop', listener)`. You can get a list of all\n * properties with {@link module:ol/Object~BaseObject#getProperties}.\n *\n * Note that the observable properties are separate from standard JS properties.\n * You can, for example, give your map object a title with\n * `map.title='New title'` and with `map.set('title', 'Another title')`. The\n * first will be a `hasOwnProperty`; the second will appear in\n * `getProperties()`. Only the second is observable.\n *\n * Properties can be deleted by using the unset method. E.g.\n * object.unset('foo').\n *\n * @fires ObjectEvent\n * @api\n */\nvar BaseObject = /*@__PURE__*/(function (Observable) {\n function BaseObject(opt_values) {\n Observable.call(this);\n\n // Call {@link module:ol/util~getUid} to ensure that the order of objects' ids is\n // the same as the order in which they were created. This also helps to\n // ensure that object properties are always added in the same order, which\n // helps many JavaScript engines generate faster code.\n getUid(this);\n\n /**\n * @private\n * @type {!Object<string, *>}\n */\n this.values_ = {};\n\n if (opt_values !== undefined) {\n this.setProperties(opt_values);\n }\n }\n\n if ( Observable ) BaseObject.__proto__ = Observable;\n BaseObject.prototype = Object.create( Observable && Observable.prototype );\n BaseObject.prototype.constructor = BaseObject;\n\n /**\n * Gets a value.\n * @param {string} key Key name.\n * @return {*} Value.\n * @api\n */\n BaseObject.prototype.get = function get (key) {\n var value;\n if (this.values_.hasOwnProperty(key)) {\n value = this.values_[key];\n }\n return value;\n };\n\n /**\n * Get a list of object property names.\n * @return {Array<string>} List of property names.\n * @api\n */\n BaseObject.prototype.getKeys = function getKeys () {\n return Object.keys(this.values_);\n };\n\n /**\n * Get an object of all property names and values.\n * @return {Object<string, *>} Object.\n * @api\n */\n BaseObject.prototype.getProperties = function getProperties () {\n return assign({}, this.values_);\n };\n\n /**\n * @param {string} key Key name.\n * @param {*} oldValue Old value.\n */\n BaseObject.prototype.notify = function notify (key, oldValue) {\n var eventType;\n eventType = getChangeEventType(key);\n this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));\n eventType = ObjectEventType.PROPERTYCHANGE;\n this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));\n };\n\n /**\n * Sets a value.\n * @param {string} key Key name.\n * @param {*} value Value.\n * @param {boolean=} opt_silent Update without triggering an event.\n * @api\n */\n BaseObject.prototype.set = function set (key, value, opt_silent) {\n if (opt_silent) {\n this.values_[key] = value;\n } else {\n var oldValue = this.values_[key];\n this.values_[key] = value;\n if (oldValue !== value) {\n this.notify(key, oldValue);\n }\n }\n };\n\n /**\n * Sets a collection of key-value pairs. Note that this changes any existing\n * properties and adds new ones (it does not remove any existing properties).\n * @param {Object<string, *>} values Values.\n * @param {boolean=} opt_silent Update without triggering an event.\n * @api\n */\n BaseObject.prototype.setProperties = function setProperties (values, opt_silent) {\n for (var key in values) {\n this.set(key, values[key], opt_silent);\n }\n };\n\n /**\n * Unsets a property.\n * @param {string} key Key name.\n * @param {boolean=} opt_silent Unset without triggering an event.\n * @api\n */\n BaseObject.prototype.unset = function unset (key, opt_silent) {\n if (key in this.values_) {\n var oldValue = this.values_[key];\n delete this.values_[key];\n if (!opt_silent) {\n this.notify(key, oldValue);\n }\n }\n };\n\n return BaseObject;\n}(Observable));\n\n\n/**\n * @type {Object<string, string>}\n */\nvar changeEventTypeCache = {};\n\n\n/**\n * @param {string} key Key name.\n * @return {string} Change name.\n */\nexport function getChangeEventType(key) {\n return changeEventTypeCache.hasOwnProperty(key) ?\n changeEventTypeCache[key] :\n (changeEventTypeCache[key] = 'change:' + key);\n}\n\n\nexport default BaseObject;\n\n//# sourceMappingURL=Object.js.map","/**\n * @module ol/Collection\n */\nimport AssertionError from './AssertionError.js';\nimport CollectionEventType from './CollectionEventType.js';\nimport BaseObject from './Object.js';\nimport Event from './events/Event.js';\n\n\n/**\n * @enum {string}\n * @private\n */\nvar Property = {\n LENGTH: 'length'\n};\n\n\n/**\n * @classdesc\n * Events emitted by {@link module:ol/Collection~Collection} instances are instances of this\n * type.\n */\nexport var CollectionEvent = /*@__PURE__*/(function (Event) {\n function CollectionEvent(type, opt_element) {\n Event.call(this, type);\n\n /**\n * The element that is added to or removed from the collection.\n * @type {*}\n * @api\n */\n this.element = opt_element;\n\n }\n\n if ( Event ) CollectionEvent.__proto__ = Event;\n CollectionEvent.prototype = Object.create( Event && Event.prototype );\n CollectionEvent.prototype.constructor = CollectionEvent;\n\n return CollectionEvent;\n}(Event));\n\n\n/**\n * @typedef {Object} Options\n * @property {boolean} [unique=false] Disallow the same item from being added to\n * the collection twice.\n */\n\n/**\n * @classdesc\n * An expanded version of standard JS Array, adding convenience methods for\n * manipulation. Add and remove changes to the Collection trigger a Collection\n * event. Note that this does not cover changes to the objects _within_ the\n * Collection; they trigger events on the appropriate object, not on the\n * Collection as a whole.\n *\n * @fires CollectionEvent\n *\n * @template T\n * @api\n */\nvar Collection = /*@__PURE__*/(function (BaseObject) {\n function Collection(opt_array, opt_options) {\n\n BaseObject.call(this);\n\n var options = opt_options || {};\n\n /**\n * @private\n * @type {boolean}\n */\n this.unique_ = !!options.unique;\n\n /**\n * @private\n * @type {!Array<T>}\n */\n this.array_ = opt_array ? opt_array : [];\n\n if (this.unique_) {\n for (var i = 0, ii = this.array_.length; i < ii; ++i) {\n this.assertUnique_(this.array_[i], i);\n }\n }\n\n this.updateLength_();\n\n }\n\n if ( BaseObject ) Collection.__proto__ = BaseObject;\n Collection.prototype = Object.create( BaseObject && BaseObject.prototype );\n Collection.prototype.constructor = Collection;\n\n /**\n * Remove all elements from the collection.\n * @api\n */\n Collection.prototype.clear = function clear () {\n while (this.getLength() > 0) {\n this.pop();\n }\n };\n\n /**\n * Add elements to the collection. This pushes each item in the provided array\n * to the end of the collection.\n * @param {!Array<T>} arr Array.\n * @return {Collection<T>} This collection.\n * @api\n */\n Collection.prototype.extend = function extend (arr) {\n for (var i = 0, ii = arr.length; i < ii; ++i) {\n this.push(arr[i]);\n }\n return this;\n };\n\n /**\n * Iterate over each element, calling the provided callback.\n * @param {function(T, number, Array<T>): *} f The function to call\n * for every element. This function takes 3 arguments (the element, the\n * index and the array). The return value is ignored.\n * @api\n */\n Collection.prototype.forEach = function forEach (f) {\n var array = this.array_;\n for (var i = 0, ii = array.length; i < ii; ++i) {\n f(array[i], i, array);\n }\n };\n\n /**\n * Get a reference to the underlying Array object. Warning: if the array\n * is mutated, no events will be dispatched by the collection, and the\n * collection's \"length\" property won't be in sync with the actual length\n * of the array.\n * @return {!Array<T>} Array.\n * @api\n */\n Collection.prototype.getArray = function getArray () {\n return this.array_;\n };\n\n /**\n * Get the element at the provided index.\n * @param {number} index Index.\n * @return {T} Element.\n * @api\n */\n Collection.prototype.item = function item (index) {\n return this.array_[index];\n };\n\n /**\n * Get the length of this collection.\n * @return {number} The length of the array.\n * @observable\n * @api\n */\n Collection.prototype.getLength = function getLength () {\n return this.get(Property.LENGTH);\n };\n\n /**\n * Insert an element at the provided index.\n * @param {number} index Index.\n * @param {T} elem Element.\n * @api\n */\n Collection.prototype.insertAt = function insertAt (index, elem) {\n if (this.unique_) {\n this.assertUnique_(elem);\n }\n this.array_.splice(index, 0, elem);\n this.updateLength_();\n this.dispatchEvent(\n new CollectionEvent(CollectionEventType.ADD, elem));\n };\n\n /**\n * Remove the last element of the collection and return it.\n * Return `undefined` if the collection is empty.\n * @return {T|undefined} Element.\n * @api\n */\n Collection.prototype.pop = function pop () {\n return this.removeAt(this.getLength() - 1);\n };\n\n /**\n * Insert the provided element at the end of the collection.\n * @param {T} elem Element.\n * @return {number} New length of the collection.\n * @api\n */\n Collection.prototype.push = function push (elem) {\n if (this.unique_) {\n this.assertUnique_(elem);\n }\n var n = this.getLength();\n this.insertAt(n, elem);\n return this.getLength();\n };\n\n /**\n * Remove the first occurrence of an element from the collection.\n * @param {T} elem Element.\n * @return {T|undefined} The removed element or undefined if none found.\n * @api\n */\n Collection.prototype.remove = function remove (elem) {\n var arr = this.array_;\n for (var i = 0, ii = arr.length; i < ii; ++i) {\n if (arr[i] === elem) {\n return this.removeAt(i);\n }\n }\n return undefined;\n };\n\n /**\n * Remove the element at the provided index and return it.\n * Return `undefined` if the collection does not contain this index.\n * @param {number} index Index.\n * @return {T|undefined} Value.\n * @api\n */\n Collection.prototype.removeAt = function removeAt (index) {\n var prev = this.array_[index];\n this.array_.splice(index, 1);\n this.updateLength_();\n this.dispatchEvent(new CollectionEvent(CollectionEventType.REMOVE, prev));\n return prev;\n };\n\n /**\n * Set the element at the provided index.\n * @param {number} index Index.\n * @param {T} elem Element.\n * @api\n */\n Collection.prototype.setAt = function setAt (index, elem) {\n var n = this.getLength();\n if (index < n) {\n if (this.unique_) {\n this.assertUnique_(elem, index);\n }\n var prev = this.array_[index];\n this.array_[index] = elem;\n this.dispatchEvent(\n new CollectionEvent(CollectionEventType.REMOVE, prev));\n this.dispatchEvent(\n new CollectionEvent(CollectionEventType.ADD, elem));\n } else {\n for (var j = n; j < index; ++j) {\n this.insertAt(j, undefined);\n }\n this.insertAt(index, elem);\n }\n };\n\n /**\n * @private\n */\n Collection.prototype.updateLength_ = function updateLength_ () {\n this.set(Property.LENGTH, this.array_.length);\n };\n\n /**\n * @private\n * @param {T} elem Element.\n * @param {number=} opt_except Optional index to ignore.\n */\n Collection.prototype.assertUnique_ = function assertUnique_ (elem, opt_except) {\n for (var i = 0, ii = this.array_.length; i < ii; ++i) {\n if (this.array_[i] === elem && i !== opt_except) {\n throw new AssertionError(58);\n }\n }\n };\n\n return Collection;\n}(BaseObject));\n\n\nexport default Collection;\n\n//# sourceMappingURL=Collection.js.map","/**\n * @module ol/MapEvent\n */\nimport Event from './events/Event.js';\n\n/**\n * @classdesc\n * Events emitted as map events are instances of this type.\n * See {@link module:ol/PluggableMap~PluggableMap} for which events trigger a map event.\n */\nvar MapEvent = /*@__PURE__*/(function (Event) {\n function MapEvent(type, map, opt_frameState) {\n\n Event.call(this, type);\n\n /**\n * The map where the event occurred.\n * @type {import(\"./PluggableMap.js\").default}\n * @api\n */\n this.map = map;\n\n /**\n * The frame state at the time of the event.\n * @type {?import(\"./PluggableMap.js\").FrameState}\n * @api\n */\n this.frameState = opt_frameState !== undefined ? opt_frameState : null;\n\n }\n\n if ( Event ) MapEvent.__proto__ = Event;\n MapEvent.prototype = Object.create( Event && Event.prototype );\n MapEvent.prototype.constructor = MapEvent;\n\n return MapEvent;\n}(Event));\n\nexport default MapEvent;\n\n//# sourceMappingURL=MapEvent.js.map","/**\n * @module ol/MapBrowserEvent\n */\nimport MapEvent from './MapEvent.js';\n\n/**\n * @classdesc\n * Events emitted as map browser events are instances of this type.\n * See {@link module:ol/PluggableMap~PluggableMap} for which events trigger a map browser event.\n */\nvar MapBrowserEvent = /*@__PURE__*/(function (MapEvent) {\n function MapBrowserEvent(type, map, browserEvent, opt_dragging, opt_frameState) {\n\n MapEvent.call(this, type, map, opt_frameState);\n\n /**\n * The original browser event.\n * @const\n * @type {Event}\n * @api\n */\n this.originalEvent = browserEvent;\n\n /**\n * The map pixel relative to the viewport corresponding to the original browser event.\n * @type {import(\"./pixel.js\").Pixel}\n * @api\n */\n this.pixel = map.getEventPixel(browserEvent);\n\n /**\n * The coordinate in view projection corresponding to the original browser event.\n * @type {import(\"./coordinate.js\").Coordinate}\n * @api\n */\n this.coordinate = map.getCoordinateFromPixel(this.pixel);\n\n /**\n * Indicates if the map is currently being dragged. Only set for\n * `POINTERDRAG` and `POINTERMOVE` events. Default is `false`.\n *\n * @type {boolean}\n * @api\n */\n this.dragging = opt_dragging !== undefined ? opt_dragging : false;\n\n }\n\n if ( MapEvent ) MapBrowserEvent.__proto__ = MapEvent;\n MapBrowserEvent.prototype = Object.create( MapEvent && MapEvent.prototype );\n MapBrowserEvent.prototype.constructor = MapBrowserEvent;\n\n /**\n * Prevents the default browser action.\n * See https://developer.mozilla.org/en-US/docs/Web/API/event.preventDefault.\n * @override\n * @api\n */\n MapBrowserEvent.prototype.preventDefault = function preventDefault () {\n MapEvent.prototype.preventDefault.call(this);\n this.originalEvent.preventDefault();\n };\n\n /**\n * Prevents further propagation of the current event.\n * See https://developer.mozilla.org/en-US/docs/Web/API/event.stopPropagation.\n * @override\n * @api\n */\n MapBrowserEvent.prototype.stopPropagation = function stopPropagation () {\n MapEvent.prototype.stopPropagation.call(this);\n this.originalEvent.stopPropagation();\n };\n\n return MapBrowserEvent;\n}(MapEvent));\n\n\nexport default MapBrowserEvent;\n\n//# sourceMappingURL=MapBrowserEvent.js.map","/**\n * @module ol/has\n */\n\nvar ua = typeof navigator !== 'undefined' ?\n navigator.userAgent.toLowerCase() : '';\n\n/**\n * User agent string says we are dealing with Firefox as browser.\n * @type {boolean}\n */\nexport var FIREFOX = ua.indexOf('firefox') !== -1;\n\n/**\n * User agent string says we are dealing with Safari as browser.\n * @type {boolean}\n */\nexport var SAFARI = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') == -1;\n\n/**\n * User agent string says we are dealing with a WebKit engine.\n * @type {boolean}\n */\nexport var WEBKIT = ua.indexOf('webkit') !== -1 && ua.indexOf('edge') == -1;\n\n/**\n * User agent string says we are dealing with a Mac as platform.\n * @type {boolean}\n */\nexport var MAC = ua.indexOf('macintosh') !== -1;\n\n\n/**\n * The ratio between physical pixels and device-independent pixels\n * (dips) on the device (`window.devicePixelRatio`).\n * @const\n * @type {number}\n * @api\n */\nexport var DEVICE_PIXEL_RATIO = window.devicePixelRatio || 1;\n\n\n/**\n * True if the browser's Canvas implementation implements {get,set}LineDash.\n * @type {boolean}\n */\nexport var CANVAS_LINE_DASH = function() {\n var has = false;\n try {\n has = !!document.createElement('canvas').getContext('2d').setLineDash;\n } catch (e) {\n // pass\n }\n return has;\n}();\n\n\n/**\n * Is HTML5 geolocation supported in the current browser?\n * @const\n * @type {boolean}\n * @api\n */\nexport var GEOLOCATION = 'geolocation' in navigator;\n\n\n/**\n * True if browser supports touch events.\n * @const\n * @type {boolean}\n * @api\n */\nexport var TOUCH = 'ontouchstart' in window;\n\n\n/**\n * True if browser supports pointer events.\n * @const\n * @type {boolean}\n */\nexport var POINTER = 'PointerEvent' in window;\n\n\n/**\n * True if browser supports ms pointer events (IE 10).\n * @const\n * @type {boolean}\n */\nexport var MSPOINTER = !!(navigator.msPointerEnabled);\n\n\nexport {HAS as WEBGL} from './webgl.js';\n\n//# sourceMappingURL=has.js.map","/**\n * @module ol/MapBrowserEventType\n */\nimport EventType from './events/EventType.js';\n\n/**\n * Constants for event names.\n * @enum {string}\n */\nexport default {\n\n /**\n * A true single click with no dragging and no double click. Note that this\n * event is delayed by 250 ms to ensure that it is not a double click.\n * @event module:ol/MapBrowserEvent~MapBrowserEvent#singleclick\n * @api\n */\n SINGLECLICK: 'singleclick',\n\n /**\n * A click with no dragging. A double click will fire two of this.\n * @event module:ol/MapBrowserEvent~MapBrowserEvent#click\n * @api\n */\n CLICK: EventType.CLICK,\n\n /**\n * A true double click, with no dragging.\n * @event module:ol/MapBrowserEvent~MapBrowserEvent#dblclick\n * @api\n */\n DBLCLICK: EventType.DBLCLICK,\n\n /**\n * Triggered when a pointer is dragged.\n * @event module:ol/MapBrowserEvent~MapBrowserEvent#pointerdrag\n * @api\n */\n POINTERDRAG: 'pointerdrag',\n\n /**\n * Triggered when a pointer is moved. Note that on touch devices this is\n * triggered when the map is panned, so is not the same as mousemove.\n * @event module:ol/MapBrowserEvent~MapBrowserEvent#pointermove\n * @api\n */\n POINTERMOVE: 'pointermove',\n\n POINTERDOWN: 'pointerdown',\n POINTERUP: 'pointerup',\n POINTEROVER: 'pointerover',\n POINTEROUT: 'pointerout',\n POINTERENTER: 'pointerenter',\n POINTERLEAVE: 'pointerleave',\n POINTERCANCEL: 'pointercancel'\n};\n\n//# sourceMappingURL=MapBrowserEventType.js.map","/**\n * @module ol/MapBrowserPointerEvent\n */\nimport MapBrowserEvent from './MapBrowserEvent.js';\n\nvar MapBrowserPointerEvent = /*@__PURE__*/(function (MapBrowserEvent) {\n function MapBrowserPointerEvent(type, map, pointerEvent, opt_dragging, opt_frameState) {\n\n MapBrowserEvent.call(this, type, map, pointerEvent.originalEvent, opt_dragging, opt_frameState);\n\n /**\n * @const\n * @type {import(\"./pointer/PointerEvent.js\").default}\n */\n this.pointerEvent = pointerEvent;\n\n }\n\n if ( MapBrowserEvent ) MapBrowserPointerEvent.__proto__ = MapBrowserEvent;\n MapBrowserPointerEvent.prototype = Object.create( MapBrowserEvent && MapBrowserEvent.prototype );\n MapBrowserPointerEvent.prototype.constructor = MapBrowserPointerEvent;\n\n return MapBrowserPointerEvent;\n}(MapBrowserEvent));\n\nexport default MapBrowserPointerEvent;\n\n//# sourceMappingURL=MapBrowserPointerEvent.js.map","/**\n * @module ol/pointer/EventType\n */\n\n/**\n * Constants for event names.\n * @enum {string}\n */\nexport default {\n POINTERMOVE: 'pointermove',\n POINTERDOWN: 'pointerdown',\n POINTERUP: 'pointerup',\n POINTEROVER: 'pointerover',\n POINTEROUT: 'pointerout',\n POINTERENTER: 'pointerenter',\n POINTERLEAVE: 'pointerleave',\n POINTERCANCEL: 'pointercancel'\n};\n\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/pointer/EventSource\n */\n\nvar EventSource = function EventSource(dispatcher, mapping) {\n\n /**\n * @type {import(\"./PointerEventHandler.js\").default}\n */\n this.dispatcher = dispatcher;\n\n /**\n * @private\n * @const\n * @type {!Object<string, function(Event)>}\n */\n this.mapping_ = mapping;\n};\n\n/**\n * List of events supported by this source.\n * @return {Array<string>} Event names\n */\nEventSource.prototype.getEvents = function getEvents () {\n return Object.keys(this.mapping_);\n};\n\n/**\n * Returns the handler that should handle a given event type.\n * @param {string} eventType The event type.\n * @return {function(Event)} Handler\n */\nEventSource.prototype.getHandlerForEvent = function getHandlerForEvent (eventType) {\n return this.mapping_[eventType];\n};\n\nexport default EventSource;\n\n//# sourceMappingURL=EventSource.js.map","/**\n * @module ol/pointer/MouseSource\n */\n\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport EventSource from './EventSource.js';\n\n\n/**\n * @type {number}\n */\nexport var POINTER_ID = 1;\n\n\n/**\n * @type {string}\n */\nexport var POINTER_TYPE = 'mouse';\n\n\n/**\n * Radius around touchend that swallows mouse events.\n *\n * @type {number}\n */\nvar DEDUP_DIST = 25;\n\n/**\n * Handler for `mousedown`.\n *\n * @this {MouseSource}\n * @param {MouseEvent} inEvent The in event.\n */\nfunction mousedown(inEvent) {\n if (!this.isEventSimulatedFromTouch_(inEvent)) {\n // TODO(dfreedman) workaround for some elements not sending mouseup\n // http://crbug/149091\n if (POINTER_ID.toString() in this.pointerMap) {\n this.cancel(inEvent);\n }\n var e = prepareEvent(inEvent, this.dispatcher);\n this.pointerMap[POINTER_ID.toString()] = inEvent;\n this.dispatcher.down(e, inEvent);\n }\n}\n\n/**\n * Handler for `mousemove`.\n *\n * @this {MouseSource}\n * @param {MouseEvent} inEvent The in event.\n */\nfunction mousemove(inEvent) {\n if (!this.isEventSimulatedFromTouch_(inEvent)) {\n var e = prepareEvent(inEvent, this.dispatcher);\n this.dispatcher.move(e, inEvent);\n }\n}\n\n/**\n * Handler for `mouseup`.\n *\n * @this {MouseSource}\n * @param {MouseEvent} inEvent The in event.\n */\nfunction mouseup(inEvent) {\n if (!this.isEventSimulatedFromTouch_(inEvent)) {\n var p = this.pointerMap[POINTER_ID.toString()];\n\n if (p && p.button === inEvent.button) {\n var e = prepareEvent(inEvent, this.dispatcher);\n this.dispatcher.up(e, inEvent);\n this.cleanupMouse();\n }\n }\n}\n\n/**\n * Handler for `mouseover`.\n *\n * @this {MouseSource}\n * @param {MouseEvent} inEvent The in event.\n */\nfunction mouseover(inEvent) {\n if (!this.isEventSimulatedFromTouch_(inEvent)) {\n var e = prepareEvent(inEvent, this.dispatcher);\n this.dispatcher.enterOver(e, inEvent);\n }\n}\n\n/**\n * Handler for `mouseout`.\n *\n * @this {MouseSource}\n * @param {MouseEvent} inEvent The in event.\n */\nfunction mouseout(inEvent) {\n if (!this.isEventSimulatedFromTouch_(inEvent)) {\n var e = prepareEvent(inEvent, this.dispatcher);\n this.dispatcher.leaveOut(e, inEvent);\n }\n}\n\n\nvar MouseSource = /*@__PURE__*/(function (EventSource) {\n function MouseSource(dispatcher) {\n var mapping = {\n 'mousedown': mousedown,\n 'mousemove': mousemove,\n 'mouseup': mouseup,\n 'mouseover': mouseover,\n 'mouseout': mouseout\n };\n EventSource.call(this, dispatcher, mapping);\n\n /**\n * @const\n * @type {!Object<string, Event|Object>}\n */\n this.pointerMap = dispatcher.pointerMap;\n\n /**\n * @const\n * @type {Array<import(\"../pixel.js\").Pixel>}\n */\n this.lastTouches = [];\n }\n\n if ( EventSource ) MouseSource.__proto__ = EventSource;\n MouseSource.prototype = Object.create( EventSource && EventSource.prototype );\n MouseSource.prototype.constructor = MouseSource;\n\n /**\n * Detect if a mouse event was simulated from a touch by\n * checking if previously there was a touch event at the\n * same position.\n *\n * FIXME - Known problem with the native Android browser on\n * Samsung GT-I9100 (Android 4.1.2):\n * In case the page is scrolled, this function does not work\n * correctly when a canvas is used (WebGL or canvas renderer).\n * Mouse listeners on canvas elements (for this browser), create\n * two mouse events: One 'good' and one 'bad' one (on other browsers or\n * when a div is used, there is only one event). For the 'bad' one,\n * clientX/clientY and also pageX/pageY are wrong when the page\n * is scrolled. Because of that, this function can not detect if\n * the events were simulated from a touch event. As result, a\n * pointer event at a wrong position is dispatched, which confuses\n * the map interactions.\n * It is unclear, how one can get the correct position for the event\n * or detect that the positions are invalid.\n *\n * @private\n * @param {MouseEvent} inEvent The in event.\n * @return {boolean} True, if the event was generated by a touch.\n */\n MouseSource.prototype.isEventSimulatedFromTouch_ = function isEventSimulatedFromTouch_ (inEvent) {\n var lts = this.lastTouches;\n var x = inEvent.clientX;\n var y = inEvent.clientY;\n for (var i = 0, l = lts.length, t = (void 0); i < l && (t = lts[i]); i++) {\n // simulated mouse events will be swallowed near a primary touchend\n var dx = Math.abs(x - t[0]);\n var dy = Math.abs(y - t[1]);\n if (dx <= DEDUP_DIST && dy <= DEDUP_DIST) {\n return true;\n }\n }\n return false;\n };\n\n /**\n * Dispatches a `pointercancel` event.\n *\n * @param {Event} inEvent The in event.\n */\n MouseSource.prototype.cancel = function cancel (inEvent) {\n var e = prepareEvent(inEvent, this.dispatcher);\n this.dispatcher.cancel(e, inEvent);\n this.cleanupMouse();\n };\n\n /**\n * Remove the mouse from the list of active pointers.\n */\n MouseSource.prototype.cleanupMouse = function cleanupMouse () {\n delete this.pointerMap[POINTER_ID.toString()];\n };\n\n return MouseSource;\n}(EventSource));\n\n\n/**\n * Creates a copy of the original event that will be used\n * for the fake pointer event.\n *\n * @param {Event} inEvent The in event.\n * @param {import(\"./PointerEventHandler.js\").default} dispatcher Event handler.\n * @return {Object} The copied event.\n */\nexport function prepareEvent(inEvent, dispatcher) {\n var e = dispatcher.cloneEvent(inEvent, inEvent);\n\n // forward mouse preventDefault\n var pd = e.preventDefault;\n e.preventDefault = function() {\n inEvent.preventDefault();\n pd();\n };\n\n e.pointerId = POINTER_ID;\n e.isPrimary = true;\n e.pointerType = POINTER_TYPE;\n\n return e;\n}\n\n\nexport default MouseSource;\n\n//# sourceMappingURL=MouseSource.js.map","/**\n * @module ol/pointer/MsSource\n */\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport EventSource from './EventSource.js';\n\n\n/**\n * @const\n * @type {Array<string>}\n */\nvar POINTER_TYPES = [\n '',\n 'unavailable',\n 'touch',\n 'pen',\n 'mouse'\n];\n\n/**\n * Handler for `msPointerDown`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerDown(inEvent) {\n this.pointerMap[inEvent.pointerId.toString()] = inEvent;\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.down(e, inEvent);\n}\n\n/**\n * Handler for `msPointerMove`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerMove(inEvent) {\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.move(e, inEvent);\n}\n\n/**\n * Handler for `msPointerUp`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerUp(inEvent) {\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.up(e, inEvent);\n this.cleanup(inEvent.pointerId);\n}\n\n/**\n * Handler for `msPointerOut`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerOut(inEvent) {\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.leaveOut(e, inEvent);\n}\n\n/**\n * Handler for `msPointerOver`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerOver(inEvent) {\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.enterOver(e, inEvent);\n}\n\n/**\n * Handler for `msPointerCancel`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msPointerCancel(inEvent) {\n var e = this.prepareEvent_(inEvent);\n this.dispatcher.cancel(e, inEvent);\n this.cleanup(inEvent.pointerId);\n}\n\n/**\n * Handler for `msLostPointerCapture`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msLostPointerCapture(inEvent) {\n var e = this.dispatcher.makeEvent('lostpointercapture', inEvent, inEvent);\n this.dispatcher.dispatchEvent(e);\n}\n\n/**\n * Handler for `msGotPointerCapture`.\n *\n * @this {MsSource}\n * @param {MSPointerEvent} inEvent The in event.\n */\nfunction msGotPointerCapture(inEvent) {\n var e = this.dispatcher.makeEvent('gotpointercapture', inEvent, inEvent);\n this.dispatcher.dispatchEvent(e);\n}\n\nvar MsSource = /*@__PURE__*/(function (EventSource) {\n function MsSource(dispatcher) {\n var mapping = {\n 'MSPointerDown': msPointerDown,\n 'MSPointerMove': msPointerMove,\n 'MSPointerUp': msPointerUp,\n 'MSPointerOut': msPointerOut,\n 'MSPointerOver': msPointerOver,\n 'MSPointerCancel': msPointerCancel,\n 'MSGotPointerCapture': msGotPointerCapture,\n 'MSLostPointerCapture': msLostPointerCapture\n };\n EventSource.call(this, dispatcher, mapping);\n\n /**\n * @const\n * @type {!Object<string, MSPointerEvent|Object>}\n */\n this.pointerMap = dispatcher.pointerMap;\n }\n\n if ( EventSource ) MsSource.__proto__ = EventSource;\n MsSource.prototype = Object.create( EventSource && EventSource.prototype );\n MsSource.prototype.constructor = MsSource;\n\n /**\n * Creates a copy of the original event that will be used\n * for the fake pointer event.\n *\n * @private\n * @param {MSPointerEvent} inEvent The in event.\n * @return {Object} The copied event.\n */\n MsSource.prototype.prepareEvent_ = function prepareEvent_ (inEvent) {\n /** @type {MSPointerEvent|Object} */\n var e = inEvent;\n if (typeof inEvent.pointerType === 'number') {\n e = this.dispatcher.cloneEvent(inEvent, inEvent);\n e.pointerType = POINTER_TYPES[inEvent.pointerType];\n }\n\n return e;\n };\n\n /**\n * Remove this pointer from the list of active pointers.\n * @param {number} pointerId Pointer identifier.\n */\n MsSource.prototype.cleanup = function cleanup (pointerId) {\n delete this.pointerMap[pointerId.toString()];\n };\n\n return MsSource;\n}(EventSource));\n\nexport default MsSource;\n\n//# sourceMappingURL=MsSource.js.map","/**\n * @module ol/pointer/NativeSource\n */\n\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport EventSource from './EventSource.js';\n\n/**\n * Handler for `pointerdown`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerDown(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `pointermove`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerMove(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `pointerup`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerUp(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `pointerout`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerOut(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `pointerover`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerOver(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `pointercancel`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction pointerCancel(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `lostpointercapture`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction lostPointerCapture(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\n/**\n * Handler for `gotpointercapture`.\n *\n * @this {NativeSource}\n * @param {Event} inEvent The in event.\n */\nfunction gotPointerCapture(inEvent) {\n this.dispatcher.fireNativeEvent(inEvent);\n}\n\nvar NativeSource = /*@__PURE__*/(function (EventSource) {\n function NativeSource(dispatcher) {\n var mapping = {\n 'pointerdown': pointerDown,\n 'pointermove': pointerMove,\n 'pointerup': pointerUp,\n 'pointerout': pointerOut,\n 'pointerover': pointerOver,\n 'pointercancel': pointerCancel,\n 'gotpointercapture': gotPointerCapture,\n 'lostpointercapture': lostPointerCapture\n };\n EventSource.call(this, dispatcher, mapping);\n }\n\n if ( EventSource ) NativeSource.__proto__ = EventSource;\n NativeSource.prototype = Object.create( EventSource && EventSource.prototype );\n NativeSource.prototype.constructor = NativeSource;\n\n return NativeSource;\n}(EventSource));\n\nexport default NativeSource;\n\n//# sourceMappingURL=NativeSource.js.map","/**\n * @module ol/pointer/PointerEvent\n */\n\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport _Event from '../events/Event.js';\n\n\n/**\n * Is the `buttons` property supported?\n * @type {boolean}\n */\nvar HAS_BUTTONS = false;\n\n\nvar PointerEvent = /*@__PURE__*/(function (_Event) {\n function PointerEvent(type, originalEvent, opt_eventDict) {\n _Event.call(this, type);\n\n /**\n * @const\n * @type {Event}\n */\n this.originalEvent = originalEvent;\n\n var eventDict = opt_eventDict ? opt_eventDict : {};\n\n /**\n * @type {number}\n */\n this.buttons = getButtons(eventDict);\n\n /**\n * @type {number}\n */\n this.pressure = getPressure(eventDict, this.buttons);\n\n // MouseEvent related properties\n\n /**\n * @type {boolean}\n */\n this.bubbles = 'bubbles' in eventDict ? eventDict['bubbles'] : false;\n\n /**\n * @type {boolean}\n */\n this.cancelable = 'cancelable' in eventDict ? eventDict['cancelable'] : false;\n\n /**\n * @type {Object}\n */\n this.view = 'view' in eventDict ? eventDict['view'] : null;\n\n /**\n * @type {number}\n */\n this.detail = 'detail' in eventDict ? eventDict['detail'] : null;\n\n /**\n * @type {number}\n */\n this.screenX = 'screenX' in eventDict ? eventDict['screenX'] : 0;\n\n /**\n * @type {number}\n */\n this.screenY = 'screenY' in eventDict ? eventDict['screenY'] : 0;\n\n /**\n * @type {number}\n */\n this.clientX = 'clientX' in eventDict ? eventDict['clientX'] : 0;\n\n /**\n * @type {number}\n */\n this.clientY = 'clientY' in eventDict ? eventDict['clientY'] : 0;\n\n /**\n * @type {boolean}\n */\n this.ctrlKey = 'ctrlKey' in eventDict ? eventDict['ctrlKey'] : false;\n\n /**\n * @type {boolean}\n */\n this.altKey = 'altKey' in eventDict ? eventDict['altKey'] : false;\n\n /**\n * @type {boolean}\n */\n this.shiftKey = 'shiftKey' in eventDict ? eventDict['shiftKey'] : false;\n\n /**\n * @type {boolean}\n */\n this.metaKey = 'metaKey' in eventDict ? eventDict['metaKey'] : false;\n\n /**\n * @type {number}\n */\n this.button = 'button' in eventDict ? eventDict['button'] : 0;\n\n /**\n * @type {Node}\n */\n this.relatedTarget = 'relatedTarget' in eventDict ?\n eventDict['relatedTarget'] : null;\n\n // PointerEvent related properties\n\n /**\n * @const\n * @type {number}\n */\n this.pointerId = 'pointerId' in eventDict ? eventDict['pointerId'] : 0;\n\n /**\n * @type {number}\n */\n this.width = 'width' in eventDict ? eventDict['width'] : 0;\n\n /**\n * @type {number}\n */\n this.height = 'height' in eventDict ? eventDict['height'] : 0;\n\n /**\n * @type {number}\n */\n this.tiltX = 'tiltX' in eventDict ? eventDict['tiltX'] : 0;\n\n /**\n * @type {number}\n */\n this.tiltY = 'tiltY' in eventDict ? eventDict['tiltY'] : 0;\n\n /**\n * @type {string}\n */\n this.pointerType = 'pointerType' in eventDict ? eventDict['pointerType'] : '';\n\n /**\n * @type {number}\n */\n this.hwTimestamp = 'hwTimestamp' in eventDict ? eventDict['hwTimestamp'] : 0;\n\n /**\n * @type {boolean}\n */\n this.isPrimary = 'isPrimary' in eventDict ? eventDict['isPrimary'] : false;\n\n // keep the semantics of preventDefault\n if (originalEvent.preventDefault) {\n this.preventDefault = function() {\n originalEvent.preventDefault();\n };\n }\n }\n\n if ( _Event ) PointerEvent.__proto__ = _Event;\n PointerEvent.prototype = Object.create( _Event && _Event.prototype );\n PointerEvent.prototype.constructor = PointerEvent;\n\n return PointerEvent;\n}(_Event));\n\n\n/**\n * @param {Object<string, ?>} eventDict The event dictionary.\n * @return {number} Button indicator.\n */\nfunction getButtons(eventDict) {\n // According to the w3c spec,\n // http://www.w3.org/TR/DOM-Level-3-Events/#events-MouseEvent-button\n // MouseEvent.button == 0 can mean either no mouse button depressed, or the\n // left mouse button depressed.\n //\n // As of now, the only way to distinguish between the two states of\n // MouseEvent.button is by using the deprecated MouseEvent.which property, as\n // this maps mouse buttons to positive integers > 0, and uses 0 to mean that\n // no mouse button is held.\n //\n // MouseEvent.which is derived from MouseEvent.button at MouseEvent creation,\n // but initMouseEvent does not expose an argument with which to set\n // MouseEvent.which. Calling initMouseEvent with a buttonArg of 0 will set\n // MouseEvent.button == 0 and MouseEvent.which == 1, breaking the expectations\n // of app developers.\n //\n // The only way to propagate the correct state of MouseEvent.which and\n // MouseEvent.button to a new MouseEvent.button == 0 and MouseEvent.which == 0\n // is to call initMouseEvent with a buttonArg value of -1.\n //\n // This is fixed with DOM Level 4's use of buttons\n var buttons;\n if (eventDict.buttons || HAS_BUTTONS) {\n buttons = eventDict.buttons;\n } else {\n switch (eventDict.which) {\n case 1: buttons = 1; break;\n case 2: buttons = 4; break;\n case 3: buttons = 2; break;\n default: buttons = 0;\n }\n }\n return buttons;\n}\n\n\n/**\n * @param {Object<string, ?>} eventDict The event dictionary.\n * @param {number} buttons Button indicator.\n * @return {number} The pressure.\n */\nfunction getPressure(eventDict, buttons) {\n // Spec requires that pointers without pressure specified use 0.5 for down\n // state and 0 for up state.\n var pressure = 0;\n if (eventDict.pressure) {\n pressure = eventDict.pressure;\n } else {\n pressure = buttons ? 0.5 : 0;\n }\n return pressure;\n}\n\n\n/**\n * Checks if the `buttons` property is supported.\n */\n(function() {\n try {\n var ev = new MouseEvent('click', {buttons: 1});\n HAS_BUTTONS = ev.buttons === 1;\n } catch (e) {\n // pass\n }\n})();\n\nexport default PointerEvent;\n\n//# sourceMappingURL=PointerEvent.js.map","/**\n * @module ol/array\n */\n\n\n/**\n * Performs a binary search on the provided sorted list and returns the index of the item if found. If it can't be found it'll return -1.\n * https://github.com/darkskyapp/binary-search\n *\n * @param {Array<*>} haystack Items to search through.\n * @param {*} needle The item to look for.\n * @param {Function=} opt_comparator Comparator function.\n * @return {number} The index of the item if found, -1 if not.\n */\nexport function binarySearch(haystack, needle, opt_comparator) {\n var mid, cmp;\n var comparator = opt_comparator || numberSafeCompareFunction;\n var low = 0;\n var high = haystack.length;\n var found = false;\n\n while (low < high) {\n /* Note that \"(low + high) >>> 1\" may overflow, and results in a typecast\n * to double (which gives the wrong results). */\n mid = low + (high - low >> 1);\n cmp = +comparator(haystack[mid], needle);\n\n if (cmp < 0.0) { /* Too low. */\n low = mid + 1;\n\n } else { /* Key found or too high */\n high = mid;\n found = !cmp;\n }\n }\n\n /* Key not found. */\n return found ? low : ~low;\n}\n\n\n/**\n * Compare function for array sort that is safe for numbers.\n * @param {*} a The first object to be compared.\n * @param {*} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n * argument is less than, equal to, or greater than the second.\n */\nexport function numberSafeCompareFunction(a, b) {\n return a > b ? 1 : a < b ? -1 : 0;\n}\n\n\n/**\n * Whether the array contains the given object.\n * @param {Array<*>} arr The array to test for the presence of the element.\n * @param {*} obj The object for which to test.\n * @return {boolean} The object is in the array.\n */\nexport function includes(arr, obj) {\n return arr.indexOf(obj) >= 0;\n}\n\n\n/**\n * @param {Array<number>} arr Array.\n * @param {number} target Target.\n * @param {number} direction 0 means return the nearest, > 0\n * means return the largest nearest, < 0 means return the\n * smallest nearest.\n * @return {number} Index.\n */\nexport function linearFindNearest(arr, target, direction) {\n var n = arr.length;\n if (arr[0] <= target) {\n return 0;\n } else if (target <= arr[n - 1]) {\n return n - 1;\n } else {\n var i;\n if (direction > 0) {\n for (i = 1; i < n; ++i) {\n if (arr[i] < target) {\n return i - 1;\n }\n }\n } else if (direction < 0) {\n for (i = 1; i < n; ++i) {\n if (arr[i] <= target) {\n return i;\n }\n }\n } else {\n for (i = 1; i < n; ++i) {\n if (arr[i] == target) {\n return i;\n } else if (arr[i] < target) {\n if (arr[i - 1] - target < target - arr[i]) {\n return i - 1;\n } else {\n return i;\n }\n }\n }\n }\n return n - 1;\n }\n}\n\n\n/**\n * @param {Array<*>} arr Array.\n * @param {number} begin Begin index.\n * @param {number} end End index.\n */\nexport function reverseSubArray(arr, begin, end) {\n while (begin < end) {\n var tmp = arr[begin];\n arr[begin] = arr[end];\n arr[end] = tmp;\n ++begin;\n --end;\n }\n}\n\n\n/**\n * @param {Array<VALUE>} arr The array to modify.\n * @param {!Array<VALUE>|VALUE} data The elements or arrays of elements to add to arr.\n * @template VALUE\n */\nexport function extend(arr, data) {\n var extension = Array.isArray(data) ? data : [data];\n var length = extension.length;\n for (var i = 0; i < length; i++) {\n arr[arr.length] = extension[i];\n }\n}\n\n\n/**\n * @param {Array<VALUE>} arr The array to modify.\n * @param {VALUE} obj The element to remove.\n * @template VALUE\n * @return {boolean} If the element was removed.\n */\nexport function remove(arr, obj) {\n var i = arr.indexOf(obj);\n var found = i > -1;\n if (found) {\n arr.splice(i, 1);\n }\n return found;\n}\n\n\n/**\n * @param {Array<VALUE>} arr The array to search in.\n * @param {function(VALUE, number, ?) : boolean} func The function to compare.\n * @template VALUE\n * @return {VALUE|null} The element found or null.\n */\nexport function find(arr, func) {\n var length = arr.length >>> 0;\n var value;\n\n for (var i = 0; i < length; i++) {\n value = arr[i];\n if (func(value, i, arr)) {\n return value;\n }\n }\n return null;\n}\n\n\n/**\n * @param {Array|Uint8ClampedArray} arr1 The first array to compare.\n * @param {Array|Uint8ClampedArray} arr2 The second array to compare.\n * @return {boolean} Whether the two arrays are equal.\n */\nexport function equals(arr1, arr2) {\n var len1 = arr1.length;\n if (len1 !== arr2.length) {\n return false;\n }\n for (var i = 0; i < len1; i++) {\n if (arr1[i] !== arr2[i]) {\n return false;\n }\n }\n return true;\n}\n\n\n/**\n * Sort the passed array such that the relative order of equal elements is preverved.\n * See https://en.wikipedia.org/wiki/Sorting_algorithm#Stability for details.\n * @param {Array<*>} arr The array to sort (modifies original).\n * @param {!function(*, *): number} compareFnc Comparison function.\n * @api\n */\nexport function stableSort(arr, compareFnc) {\n var length = arr.length;\n var tmp = Array(arr.length);\n var i;\n for (i = 0; i < length; i++) {\n tmp[i] = {index: i, value: arr[i]};\n }\n tmp.sort(function(a, b) {\n return compareFnc(a.value, b.value) || a.index - b.index;\n });\n for (i = 0; i < arr.length; i++) {\n arr[i] = tmp[i].value;\n }\n}\n\n\n/**\n * @param {Array<*>} arr The array to search in.\n * @param {Function} func Comparison function.\n * @return {number} Return index.\n */\nexport function findIndex(arr, func) {\n var index;\n var found = !arr.every(function(el, idx) {\n index = idx;\n return !func(el, idx, arr);\n });\n return found ? index : -1;\n}\n\n\n/**\n * @param {Array<*>} arr The array to test.\n * @param {Function=} opt_func Comparison function.\n * @param {boolean=} opt_strict Strictly sorted (default false).\n * @return {boolean} Return index.\n */\nexport function isSorted(arr, opt_func, opt_strict) {\n var compare = opt_func || numberSafeCompareFunction;\n return arr.every(function(currentVal, index) {\n if (index === 0) {\n return true;\n }\n var res = compare(arr[index - 1], currentVal);\n return !(res > 0 || opt_strict && res === 0);\n });\n}\n\n//# sourceMappingURL=array.js.map","/**\n * @module ol/pointer/TouchSource\n */\n\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport {remove} from '../array.js';\nimport EventSource from './EventSource.js';\nimport {POINTER_ID} from './MouseSource.js';\n\n\n/**\n * @type {number}\n */\nvar CLICK_COUNT_TIMEOUT = 200;\n\n/**\n * @type {string}\n */\nvar POINTER_TYPE = 'touch';\n\n/**\n * Handler for `touchstart`, triggers `pointerover`,\n * `pointerenter` and `pointerdown` events.\n *\n * @this {TouchSource}\n * @param {TouchEvent} inEvent The in event.\n */\nfunction touchstart(inEvent) {\n this.vacuumTouches_(inEvent);\n this.setPrimaryTouch_(inEvent.changedTouches[0]);\n this.dedupSynthMouse_(inEvent);\n this.clickCount_++;\n this.processTouches_(inEvent, this.overDown_);\n}\n\n/**\n * Handler for `touchmove`.\n *\n * @this {TouchSource}\n * @param {TouchEvent} inEvent The in event.\n */\nfunction touchmove(inEvent) {\n this.processTouches_(inEvent, this.moveOverOut_);\n}\n\n/**\n * Handler for `touchend`, triggers `pointerup`,\n * `pointerout` and `pointerleave` events.\n *\n * @this {TouchSource}\n * @param {TouchEvent} inEvent The event.\n */\nfunction touchend(inEvent) {\n this.dedupSynthMouse_(inEvent);\n this.processTouches_(inEvent, this.upOut_);\n}\n\n/**\n * Handler for `touchcancel`, triggers `pointercancel`,\n * `pointerout` and `pointerleave` events.\n *\n * @this {TouchSource}\n * @param {TouchEvent} inEvent The in event.\n */\nfunction touchcancel(inEvent) {\n this.processTouches_(inEvent, this.cancelOut_);\n}\n\n\nvar TouchSource = /*@__PURE__*/(function (EventSource) {\n function TouchSource(dispatcher, mouseSource) {\n var mapping = {\n 'touchstart': touchstart,\n 'touchmove': touchmove,\n 'touchend': touchend,\n 'touchcancel': touchcancel\n };\n EventSource.call(this, dispatcher, mapping);\n\n /**\n * @const\n * @type {!Object<string, Event|Object>}\n */\n this.pointerMap = dispatcher.pointerMap;\n\n /**\n * @const\n * @type {import(\"./MouseSource.js\").default}\n */\n this.mouseSource = mouseSource;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.firstTouchId_ = undefined;\n\n /**\n * @private\n * @type {number}\n */\n this.clickCount_ = 0;\n\n /**\n * @private\n * @type {?}\n */\n this.resetId_;\n\n /**\n * Mouse event timeout: This should be long enough to\n * ignore compat mouse events made by touch.\n * @private\n * @type {number}\n */\n this.dedupTimeout_ = 2500;\n }\n\n if ( EventSource ) TouchSource.__proto__ = EventSource;\n TouchSource.prototype = Object.create( EventSource && EventSource.prototype );\n TouchSource.prototype.constructor = TouchSource;\n\n /**\n * @private\n * @param {Touch} inTouch The in touch.\n * @return {boolean} True, if this is the primary touch.\n */\n TouchSource.prototype.isPrimaryTouch_ = function isPrimaryTouch_ (inTouch) {\n return this.firstTouchId_ === inTouch.identifier;\n };\n\n /**\n * Set primary touch if there are no pointers, or the only pointer is the mouse.\n * @param {Touch} inTouch The in touch.\n * @private\n */\n TouchSource.prototype.setPrimaryTouch_ = function setPrimaryTouch_ (inTouch) {\n var count = Object.keys(this.pointerMap).length;\n if (count === 0 || (count === 1 && POINTER_ID.toString() in this.pointerMap)) {\n this.firstTouchId_ = inTouch.identifier;\n this.cancelResetClickCount_();\n }\n };\n\n /**\n * @private\n * @param {PointerEvent} inPointer The in pointer object.\n */\n TouchSource.prototype.removePrimaryPointer_ = function removePrimaryPointer_ (inPointer) {\n if (inPointer.isPrimary) {\n this.firstTouchId_ = undefined;\n this.resetClickCount_();\n }\n };\n\n /**\n * @private\n */\n TouchSource.prototype.resetClickCount_ = function resetClickCount_ () {\n this.resetId_ = setTimeout(\n this.resetClickCountHandler_.bind(this),\n CLICK_COUNT_TIMEOUT);\n };\n\n /**\n * @private\n */\n TouchSource.prototype.resetClickCountHandler_ = function resetClickCountHandler_ () {\n this.clickCount_ = 0;\n this.resetId_ = undefined;\n };\n\n /**\n * @private\n */\n TouchSource.prototype.cancelResetClickCount_ = function cancelResetClickCount_ () {\n if (this.resetId_ !== undefined) {\n clearTimeout(this.resetId_);\n }\n };\n\n /**\n * @private\n * @param {TouchEvent} browserEvent Browser event\n * @param {Touch} inTouch Touch event\n * @return {PointerEvent} A pointer object.\n */\n TouchSource.prototype.touchToPointer_ = function touchToPointer_ (browserEvent, inTouch) {\n var e = this.dispatcher.cloneEvent(browserEvent, inTouch);\n // Spec specifies that pointerId 1 is reserved for Mouse.\n // Touch identifiers can start at 0.\n // Add 2 to the touch identifier for compatibility.\n e.pointerId = inTouch.identifier + 2;\n // TODO: check if this is necessary?\n //e.target = findTarget(e);\n e.bubbles = true;\n e.cancelable = true;\n e.detail = this.clickCount_;\n e.button = 0;\n e.buttons = 1;\n e.width = inTouch.radiusX || 0;\n e.height = inTouch.radiusY || 0;\n e.pressure = inTouch.force || 0.5;\n e.isPrimary = this.isPrimaryTouch_(inTouch);\n e.pointerType = POINTER_TYPE;\n\n // make sure that the properties that are different for\n // each `Touch` object are not copied from the BrowserEvent object\n e.clientX = inTouch.clientX;\n e.clientY = inTouch.clientY;\n e.screenX = inTouch.screenX;\n e.screenY = inTouch.screenY;\n\n return e;\n };\n\n /**\n * @private\n * @param {TouchEvent} inEvent Touch event\n * @param {function(TouchEvent, PointerEvent)} inFunction In function.\n */\n TouchSource.prototype.processTouches_ = function processTouches_ (inEvent, inFunction) {\n var touches = Array.prototype.slice.call(inEvent.changedTouches);\n var count = touches.length;\n function preventDefault() {\n inEvent.preventDefault();\n }\n for (var i = 0; i < count; ++i) {\n var pointer = this.touchToPointer_(inEvent, touches[i]);\n // forward touch preventDefaults\n pointer.preventDefault = preventDefault;\n inFunction.call(this, inEvent, pointer);\n }\n };\n\n /**\n * @private\n * @param {TouchList} touchList The touch list.\n * @param {number} searchId Search identifier.\n * @return {boolean} True, if the `Touch` with the given id is in the list.\n */\n TouchSource.prototype.findTouch_ = function findTouch_ (touchList, searchId) {\n var l = touchList.length;\n for (var i = 0; i < l; i++) {\n var touch = touchList[i];\n if (touch.identifier === searchId) {\n return true;\n }\n }\n return false;\n };\n\n /**\n * In some instances, a touchstart can happen without a touchend. This\n * leaves the pointermap in a broken state.\n * Therefore, on every touchstart, we remove the touches that did not fire a\n * touchend event.\n * To keep state globally consistent, we fire a pointercancel for\n * this \"abandoned\" touch\n *\n * @private\n * @param {TouchEvent} inEvent The in event.\n */\n TouchSource.prototype.vacuumTouches_ = function vacuumTouches_ (inEvent) {\n var touchList = inEvent.touches;\n // pointerMap.getCount() should be < touchList.length here,\n // as the touchstart has not been processed yet.\n var keys = Object.keys(this.pointerMap);\n var count = keys.length;\n if (count >= touchList.length) {\n var d = [];\n for (var i = 0; i < count; ++i) {\n var key = Number(keys[i]);\n var value = this.pointerMap[key];\n // Never remove pointerId == 1, which is mouse.\n // Touch identifiers are 2 smaller than their pointerId, which is the\n // index in pointermap.\n if (key != POINTER_ID && !this.findTouch_(touchList, key - 2)) {\n d.push(value.out);\n }\n }\n for (var i$1 = 0; i$1 < d.length; ++i$1) {\n this.cancelOut_(inEvent, d[i$1]);\n }\n }\n };\n\n /**\n * @private\n * @param {TouchEvent} browserEvent The event.\n * @param {PointerEvent} inPointer The in pointer object.\n */\n TouchSource.prototype.overDown_ = function overDown_ (browserEvent, inPointer) {\n this.pointerMap[inPointer.pointerId] = {\n target: inPointer.target,\n out: inPointer,\n outTarget: inPointer.target\n };\n this.dispatcher.over(inPointer, browserEvent);\n this.dispatcher.enter(inPointer, browserEvent);\n this.dispatcher.down(inPointer, browserEvent);\n };\n\n /**\n * @private\n * @param {TouchEvent} browserEvent The event.\n * @param {PointerEvent} inPointer The in pointer.\n */\n TouchSource.prototype.moveOverOut_ = function moveOverOut_ (browserEvent, inPointer) {\n var event = inPointer;\n var pointer = this.pointerMap[event.pointerId];\n // a finger drifted off the screen, ignore it\n if (!pointer) {\n return;\n }\n var outEvent = pointer.out;\n var outTarget = pointer.outTarget;\n this.dispatcher.move(event, browserEvent);\n if (outEvent && outTarget !== event.target) {\n outEvent.relatedTarget = event.target;\n /** @type {Object} */ (event).relatedTarget = outTarget;\n // recover from retargeting by shadow\n outEvent.target = outTarget;\n if (event.target) {\n this.dispatcher.leaveOut(outEvent, browserEvent);\n this.dispatcher.enterOver(event, browserEvent);\n } else {\n // clean up case when finger leaves the screen\n /** @type {Object} */ (event).target = outTarget;\n /** @type {Object} */ (event).relatedTarget = null;\n this.cancelOut_(browserEvent, event);\n }\n }\n pointer.out = event;\n pointer.outTarget = event.target;\n };\n\n /**\n * @private\n * @param {TouchEvent} browserEvent An event.\n * @param {PointerEvent} inPointer The inPointer object.\n */\n TouchSource.prototype.upOut_ = function upOut_ (browserEvent, inPointer) {\n this.dispatcher.up(inPointer, browserEvent);\n this.dispatcher.out(inPointer, browserEvent);\n this.dispatcher.leave(inPointer, browserEvent);\n this.cleanUpPointer_(inPointer);\n };\n\n /**\n * @private\n * @param {TouchEvent} browserEvent The event.\n * @param {PointerEvent} inPointer The in pointer.\n */\n TouchSource.prototype.cancelOut_ = function cancelOut_ (browserEvent, inPointer) {\n this.dispatcher.cancel(inPointer, browserEvent);\n this.dispatcher.out(inPointer, browserEvent);\n this.dispatcher.leave(inPointer, browserEvent);\n this.cleanUpPointer_(inPointer);\n };\n\n /**\n * @private\n * @param {PointerEvent} inPointer The inPointer object.\n */\n TouchSource.prototype.cleanUpPointer_ = function cleanUpPointer_ (inPointer) {\n delete this.pointerMap[inPointer.pointerId];\n this.removePrimaryPointer_(inPointer);\n };\n\n /**\n * Prevent synth mouse events from creating pointer events.\n *\n * @private\n * @param {TouchEvent} inEvent The in event.\n */\n TouchSource.prototype.dedupSynthMouse_ = function dedupSynthMouse_ (inEvent) {\n var lts = this.mouseSource.lastTouches;\n var t = inEvent.changedTouches[0];\n // only the primary finger will synth mouse events\n if (this.isPrimaryTouch_(t)) {\n // remember x/y of last touch\n var lt = [t.clientX, t.clientY];\n lts.push(lt);\n\n setTimeout(function() {\n // remove touch after timeout\n remove(lts, lt);\n }, this.dedupTimeout_);\n }\n };\n\n return TouchSource;\n}(EventSource));\n\nexport default TouchSource;\n\n//# sourceMappingURL=TouchSource.js.map","/**\n * @module ol/pointer/PointerEventHandler\n */\n\n// Based on https://github.com/Polymer/PointerEvents\n\n// Copyright (c) 2013 The Polymer Authors. All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are\n// met:\n//\n// * Redistributions of source code must retain the above copyright\n// notice, this list of conditions and the following disclaimer.\n// * Redistributions in binary form must reproduce the above\n// copyright notice, this list of conditions and the following disclaimer\n// in the documentation and/or other materials provided with the\n// distribution.\n// * Neither the name of Google Inc. nor the names of its\n// contributors may be used to endorse or promote products derived from\n// this software without specific prior written permission.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n// \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\nimport {listen, unlisten} from '../events.js';\nimport EventTarget from '../events/Target.js';\nimport {POINTER, MSPOINTER, TOUCH} from '../has.js';\nimport PointerEventType from './EventType.js';\nimport MouseSource, {prepareEvent as prepareMouseEvent} from './MouseSource.js';\nimport MsSource from './MsSource.js';\nimport NativeSource from './NativeSource.js';\nimport PointerEvent from './PointerEvent.js';\nimport TouchSource from './TouchSource.js';\n\n\n/**\n * Properties to copy when cloning an event, with default values.\n * @type {Array<Array>}\n */\nvar CLONE_PROPS = [\n // MouseEvent\n ['bubbles', false],\n ['cancelable', false],\n ['view', null],\n ['detail', null],\n ['screenX', 0],\n ['screenY', 0],\n ['clientX', 0],\n ['clientY', 0],\n ['ctrlKey', false],\n ['altKey', false],\n ['shiftKey', false],\n ['metaKey', false],\n ['button', 0],\n ['relatedTarget', null],\n // DOM Level 3\n ['buttons', 0],\n // PointerEvent\n ['pointerId', 0],\n ['width', 0],\n ['height', 0],\n ['pressure', 0],\n ['tiltX', 0],\n ['tiltY', 0],\n ['pointerType', ''],\n ['hwTimestamp', 0],\n ['isPrimary', false],\n // event instance\n ['type', ''],\n ['target', null],\n ['currentTarget', null],\n ['which', 0]\n];\n\n\nvar PointerEventHandler = /*@__PURE__*/(function (EventTarget) {\n function PointerEventHandler(element) {\n EventTarget.call(this);\n\n /**\n * @const\n * @private\n * @type {Element|HTMLDocument}\n */\n this.element_ = element;\n\n /**\n * @const\n * @type {!Object<string, Event|Object>}\n */\n this.pointerMap = {};\n\n /**\n * @type {Object<string, function(Event)>}\n * @private\n */\n this.eventMap_ = {};\n\n /**\n * @type {Array<import(\"./EventSource.js\").default>}\n * @private\n */\n this.eventSourceList_ = [];\n\n this.registerSources();\n }\n\n if ( EventTarget ) PointerEventHandler.__proto__ = EventTarget;\n PointerEventHandler.prototype = Object.create( EventTarget && EventTarget.prototype );\n PointerEventHandler.prototype.constructor = PointerEventHandler;\n\n /**\n * Set up the event sources (mouse, touch and native pointers)\n * that generate pointer events.\n */\n PointerEventHandler.prototype.registerSources = function registerSources () {\n if (POINTER) {\n this.registerSource('native', new NativeSource(this));\n } else if (MSPOINTER) {\n this.registerSource('ms', new MsSource(this));\n } else {\n var mouseSource = new MouseSource(this);\n this.registerSource('mouse', mouseSource);\n\n if (TOUCH) {\n this.registerSource('touch', new TouchSource(this, mouseSource));\n }\n }\n\n // register events on the viewport element\n this.register_();\n };\n\n /**\n * Add a new event source that will generate pointer events.\n *\n * @param {string} name A name for the event source\n * @param {import(\"./EventSource.js\").default} source The source event.\n */\n PointerEventHandler.prototype.registerSource = function registerSource (name, source) {\n var s = source;\n var newEvents = s.getEvents();\n\n if (newEvents) {\n newEvents.forEach(function(e) {\n var handler = s.getHandlerForEvent(e);\n\n if (handler) {\n this.eventMap_[e] = handler.bind(s);\n }\n }.bind(this));\n this.eventSourceList_.push(s);\n }\n };\n\n /**\n * Set up the events for all registered event sources.\n * @private\n */\n PointerEventHandler.prototype.register_ = function register_ () {\n var l = this.eventSourceList_.length;\n for (var i = 0; i < l; i++) {\n var eventSource = this.eventSourceList_[i];\n this.addEvents_(eventSource.getEvents());\n }\n };\n\n /**\n * Remove all registered events.\n * @private\n */\n PointerEventHandler.prototype.unregister_ = function unregister_ () {\n var l = this.eventSourceList_.length;\n for (var i = 0; i < l; i++) {\n var eventSource = this.eventSourceList_[i];\n this.removeEvents_(eventSource.getEvents());\n }\n };\n\n /**\n * Calls the right handler for a new event.\n * @private\n * @param {Event} inEvent Browser event.\n */\n PointerEventHandler.prototype.eventHandler_ = function eventHandler_ (inEvent) {\n var type = inEvent.type;\n var handler = this.eventMap_[type];\n if (handler) {\n handler(inEvent);\n }\n };\n\n /**\n * Setup listeners for the given events.\n * @private\n * @param {Array<string>} events List of events.\n */\n PointerEventHandler.prototype.addEvents_ = function addEvents_ (events) {\n events.forEach(function(eventName) {\n listen(this.element_, eventName, this.eventHandler_, this);\n }.bind(this));\n };\n\n /**\n * Unregister listeners for the given events.\n * @private\n * @param {Array<string>} events List of events.\n */\n PointerEventHandler.prototype.removeEvents_ = function removeEvents_ (events) {\n events.forEach(function(e) {\n unlisten(this.element_, e, this.eventHandler_, this);\n }.bind(this));\n };\n\n /**\n * Returns a snapshot of inEvent, with writable properties.\n *\n * @param {Event} event Browser event.\n * @param {Event|Touch} inEvent An event that contains\n * properties to copy.\n * @return {Object} An object containing shallow copies of\n * `inEvent`'s properties.\n */\n PointerEventHandler.prototype.cloneEvent = function cloneEvent (event, inEvent) {\n var eventCopy = {};\n for (var i = 0, ii = CLONE_PROPS.length; i < ii; i++) {\n var p = CLONE_PROPS[i][0];\n eventCopy[p] = event[p] || inEvent[p] || CLONE_PROPS[i][1];\n }\n\n return eventCopy;\n };\n\n // EVENTS\n\n\n /**\n * Triggers a 'pointerdown' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.down = function down (data, event) {\n this.fireEvent(PointerEventType.POINTERDOWN, data, event);\n };\n\n /**\n * Triggers a 'pointermove' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.move = function move (data, event) {\n this.fireEvent(PointerEventType.POINTERMOVE, data, event);\n };\n\n /**\n * Triggers a 'pointerup' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.up = function up (data, event) {\n this.fireEvent(PointerEventType.POINTERUP, data, event);\n };\n\n /**\n * Triggers a 'pointerenter' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.enter = function enter (data, event) {\n data.bubbles = false;\n this.fireEvent(PointerEventType.POINTERENTER, data, event);\n };\n\n /**\n * Triggers a 'pointerleave' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.leave = function leave (data, event) {\n data.bubbles = false;\n this.fireEvent(PointerEventType.POINTERLEAVE, data, event);\n };\n\n /**\n * Triggers a 'pointerover' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.over = function over (data, event) {\n data.bubbles = true;\n this.fireEvent(PointerEventType.POINTEROVER, data, event);\n };\n\n /**\n * Triggers a 'pointerout' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.out = function out (data, event) {\n data.bubbles = true;\n this.fireEvent(PointerEventType.POINTEROUT, data, event);\n };\n\n /**\n * Triggers a 'pointercancel' event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.cancel = function cancel (data, event) {\n this.fireEvent(PointerEventType.POINTERCANCEL, data, event);\n };\n\n /**\n * Triggers a combination of 'pointerout' and 'pointerleave' events.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.leaveOut = function leaveOut (data, event) {\n this.out(data, event);\n if (!this.contains_(data.target, data.relatedTarget)) {\n this.leave(data, event);\n }\n };\n\n /**\n * Triggers a combination of 'pointerover' and 'pointerevents' events.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.enterOver = function enterOver (data, event) {\n this.over(data, event);\n if (!this.contains_(data.target, data.relatedTarget)) {\n this.enter(data, event);\n }\n };\n\n /**\n * @private\n * @param {Element} container The container element.\n * @param {Element} contained The contained element.\n * @return {boolean} Returns true if the container element\n * contains the other element.\n */\n PointerEventHandler.prototype.contains_ = function contains_ (container, contained) {\n if (!container || !contained) {\n return false;\n }\n return container.contains(contained);\n };\n\n // EVENT CREATION AND TRACKING\n /**\n * Creates a new Event of type `inType`, based on the information in\n * `data`.\n *\n * @param {string} inType A string representing the type of event to create.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n * @return {PointerEvent} A PointerEvent of type `inType`.\n */\n PointerEventHandler.prototype.makeEvent = function makeEvent (inType, data, event) {\n return new PointerEvent(inType, event, data);\n };\n\n /**\n * Make and dispatch an event in one call.\n * @param {string} inType A string representing the type of event.\n * @param {Object} data Pointer event data.\n * @param {Event} event The event.\n */\n PointerEventHandler.prototype.fireEvent = function fireEvent (inType, data, event) {\n var e = this.makeEvent(inType, data, event);\n this.dispatchEvent(e);\n };\n\n /**\n * Creates a pointer event from a native pointer event\n * and dispatches this event.\n * @param {Event} event A platform event with a target.\n */\n PointerEventHandler.prototype.fireNativeEvent = function fireNativeEvent (event) {\n var e = this.makeEvent(event.type, event, event);\n this.dispatchEvent(e);\n };\n\n /**\n * Wrap a native mouse event into a pointer event.\n * This proxy method is required for the legacy IE support.\n * @param {string} eventType The pointer event type.\n * @param {Event} event The event.\n * @return {PointerEvent} The wrapped event.\n */\n PointerEventHandler.prototype.wrapMouseEvent = function wrapMouseEvent (eventType, event) {\n var pointerEvent = this.makeEvent(\n eventType, prepareMouseEvent(event, this), event);\n return pointerEvent;\n };\n\n /**\n * @inheritDoc\n */\n PointerEventHandler.prototype.disposeInternal = function disposeInternal () {\n this.unregister_();\n EventTarget.prototype.disposeInternal.call(this);\n };\n\n return PointerEventHandler;\n}(EventTarget));\n\nexport default PointerEventHandler;\n\n//# sourceMappingURL=PointerEventHandler.js.map","/**\n * @module ol/MapBrowserEventHandler\n */\nimport {DEVICE_PIXEL_RATIO} from './has.js';\nimport MapBrowserEventType from './MapBrowserEventType.js';\nimport MapBrowserPointerEvent from './MapBrowserPointerEvent.js';\nimport {listen, unlistenByKey} from './events.js';\nimport EventTarget from './events/Target.js';\nimport PointerEventType from './pointer/EventType.js';\nimport PointerEventHandler from './pointer/PointerEventHandler.js';\n\nvar MapBrowserEventHandler = /*@__PURE__*/(function (EventTarget) {\n function MapBrowserEventHandler(map, moveTolerance) {\n\n EventTarget.call(this);\n\n /**\n * This is the element that we will listen to the real events on.\n * @type {import(\"./PluggableMap.js\").default}\n * @private\n */\n this.map_ = map;\n\n /**\n * @type {any}\n * @private\n */\n this.clickTimeoutId_;\n\n /**\n * @type {boolean}\n * @private\n */\n this.dragging_ = false;\n\n /**\n * @type {!Array<import(\"./events.js\").EventsKey>}\n * @private\n */\n this.dragListenerKeys_ = [];\n\n /**\n * @type {number}\n * @private\n */\n this.moveTolerance_ = moveTolerance ?\n moveTolerance * DEVICE_PIXEL_RATIO : DEVICE_PIXEL_RATIO;\n\n /**\n * The most recent \"down\" type event (or null if none have occurred).\n * Set on pointerdown.\n * @type {import(\"./pointer/PointerEvent.js\").default}\n * @private\n */\n this.down_ = null;\n\n var element = this.map_.getViewport();\n\n /**\n * @type {number}\n * @private\n */\n this.activePointers_ = 0;\n\n /**\n * @type {!Object<number, boolean>}\n * @private\n */\n this.trackedTouches_ = {};\n\n /**\n * Event handler which generates pointer events for\n * the viewport element.\n *\n * @type {PointerEventHandler}\n * @private\n */\n this.pointerEventHandler_ = new PointerEventHandler(element);\n\n /**\n * Event handler which generates pointer events for\n * the document (used when dragging).\n *\n * @type {PointerEventHandler}\n * @private\n */\n this.documentPointerEventHandler_ = null;\n\n /**\n * @type {?import(\"./events.js\").EventsKey}\n * @private\n */\n this.pointerdownListenerKey_ = listen(this.pointerEventHandler_,\n PointerEventType.POINTERDOWN,\n this.handlePointerDown_, this);\n\n /**\n * @type {?import(\"./events.js\").EventsKey}\n * @private\n */\n this.relayedListenerKey_ = listen(this.pointerEventHandler_,\n PointerEventType.POINTERMOVE,\n this.relayEvent_, this);\n\n }\n\n if ( EventTarget ) MapBrowserEventHandler.__proto__ = EventTarget;\n MapBrowserEventHandler.prototype = Object.create( EventTarget && EventTarget.prototype );\n MapBrowserEventHandler.prototype.constructor = MapBrowserEventHandler;\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.emulateClick_ = function emulateClick_ (pointerEvent) {\n var newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.CLICK, this.map_, pointerEvent);\n this.dispatchEvent(newEvent);\n if (this.clickTimeoutId_ !== undefined) {\n // double-click\n clearTimeout(this.clickTimeoutId_);\n this.clickTimeoutId_ = undefined;\n newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.DBLCLICK, this.map_, pointerEvent);\n this.dispatchEvent(newEvent);\n } else {\n // click\n this.clickTimeoutId_ = setTimeout(function() {\n this.clickTimeoutId_ = undefined;\n var newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.SINGLECLICK, this.map_, pointerEvent);\n this.dispatchEvent(newEvent);\n }.bind(this), 250);\n }\n };\n\n /**\n * Keeps track on how many pointers are currently active.\n *\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.updateActivePointers_ = function updateActivePointers_ (pointerEvent) {\n var event = pointerEvent;\n\n if (event.type == MapBrowserEventType.POINTERUP ||\n event.type == MapBrowserEventType.POINTERCANCEL) {\n delete this.trackedTouches_[event.pointerId];\n } else if (event.type == MapBrowserEventType.POINTERDOWN) {\n this.trackedTouches_[event.pointerId] = true;\n }\n this.activePointers_ = Object.keys(this.trackedTouches_).length;\n };\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.handlePointerUp_ = function handlePointerUp_ (pointerEvent) {\n this.updateActivePointers_(pointerEvent);\n var newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.POINTERUP, this.map_, pointerEvent);\n this.dispatchEvent(newEvent);\n\n // We emulate click events on left mouse button click, touch contact, and pen\n // contact. isMouseActionButton returns true in these cases (evt.button is set\n // to 0).\n // See http://www.w3.org/TR/pointerevents/#button-states\n // We only fire click, singleclick, and doubleclick if nobody has called\n // event.stopPropagation() or event.preventDefault().\n if (!newEvent.propagationStopped && !this.dragging_ && this.isMouseActionButton_(pointerEvent)) {\n this.emulateClick_(this.down_);\n }\n\n if (this.activePointers_ === 0) {\n this.dragListenerKeys_.forEach(unlistenByKey);\n this.dragListenerKeys_.length = 0;\n this.dragging_ = false;\n this.down_ = null;\n this.documentPointerEventHandler_.dispose();\n this.documentPointerEventHandler_ = null;\n }\n };\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @return {boolean} If the left mouse button was pressed.\n * @private\n */\n MapBrowserEventHandler.prototype.isMouseActionButton_ = function isMouseActionButton_ (pointerEvent) {\n return pointerEvent.button === 0;\n };\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.handlePointerDown_ = function handlePointerDown_ (pointerEvent) {\n this.updateActivePointers_(pointerEvent);\n var newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.POINTERDOWN, this.map_, pointerEvent);\n this.dispatchEvent(newEvent);\n\n this.down_ = pointerEvent;\n\n if (this.dragListenerKeys_.length === 0) {\n /* Set up a pointer event handler on the `document`,\n * which is required when the pointer is moved outside\n * the viewport when dragging.\n */\n this.documentPointerEventHandler_ =\n new PointerEventHandler(document);\n\n this.dragListenerKeys_.push(\n listen(this.documentPointerEventHandler_,\n MapBrowserEventType.POINTERMOVE,\n this.handlePointerMove_, this),\n listen(this.documentPointerEventHandler_,\n MapBrowserEventType.POINTERUP,\n this.handlePointerUp_, this),\n /* Note that the listener for `pointercancel is set up on\n * `pointerEventHandler_` and not `documentPointerEventHandler_` like\n * the `pointerup` and `pointermove` listeners.\n *\n * The reason for this is the following: `TouchSource.vacuumTouches_()`\n * issues `pointercancel` events, when there was no `touchend` for a\n * `touchstart`. Now, let's say a first `touchstart` is registered on\n * `pointerEventHandler_`. The `documentPointerEventHandler_` is set up.\n * But `documentPointerEventHandler_` doesn't know about the first\n * `touchstart`. If there is no `touchend` for the `touchstart`, we can\n * only receive a `touchcancel` from `pointerEventHandler_`, because it is\n * only registered there.\n */\n listen(this.pointerEventHandler_,\n MapBrowserEventType.POINTERCANCEL,\n this.handlePointerUp_, this)\n );\n }\n };\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.handlePointerMove_ = function handlePointerMove_ (pointerEvent) {\n // Between pointerdown and pointerup, pointermove events are triggered.\n // To avoid a 'false' touchmove event to be dispatched, we test if the pointer\n // moved a significant distance.\n if (this.isMoving_(pointerEvent)) {\n this.dragging_ = true;\n var newEvent = new MapBrowserPointerEvent(\n MapBrowserEventType.POINTERDRAG, this.map_, pointerEvent,\n this.dragging_);\n this.dispatchEvent(newEvent);\n }\n\n // Some native android browser triggers mousemove events during small period\n // of time. See: https://code.google.com/p/android/issues/detail?id=5491 or\n // https://code.google.com/p/android/issues/detail?id=19827\n // ex: Galaxy Tab P3110 + Android 4.1.1\n pointerEvent.preventDefault();\n };\n\n /**\n * Wrap and relay a pointer event. Note that this requires that the type\n * string for the MapBrowserPointerEvent matches the PointerEvent type.\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @private\n */\n MapBrowserEventHandler.prototype.relayEvent_ = function relayEvent_ (pointerEvent) {\n var dragging = !!(this.down_ && this.isMoving_(pointerEvent));\n this.dispatchEvent(new MapBrowserPointerEvent(\n pointerEvent.type, this.map_, pointerEvent, dragging));\n };\n\n /**\n * @param {import(\"./pointer/PointerEvent.js\").default} pointerEvent Pointer\n * event.\n * @return {boolean} Is moving.\n * @private\n */\n MapBrowserEventHandler.prototype.isMoving_ = function isMoving_ (pointerEvent) {\n return this.dragging_ ||\n Math.abs(pointerEvent.clientX - this.down_.clientX) > this.moveTolerance_ ||\n Math.abs(pointerEvent.clientY - this.down_.clientY) > this.moveTolerance_;\n };\n\n /**\n * @inheritDoc\n */\n MapBrowserEventHandler.prototype.disposeInternal = function disposeInternal () {\n if (this.relayedListenerKey_) {\n unlistenByKey(this.relayedListenerKey_);\n this.relayedListenerKey_ = null;\n }\n if (this.pointerdownListenerKey_) {\n unlistenByKey(this.pointerdownListenerKey_);\n this.pointerdownListenerKey_ = null;\n }\n\n this.dragListenerKeys_.forEach(unlistenByKey);\n this.dragListenerKeys_.length = 0;\n\n if (this.documentPointerEventHandler_) {\n this.documentPointerEventHandler_.dispose();\n this.documentPointerEventHandler_ = null;\n }\n if (this.pointerEventHandler_) {\n this.pointerEventHandler_.dispose();\n this.pointerEventHandler_ = null;\n }\n EventTarget.prototype.disposeInternal.call(this);\n };\n\n return MapBrowserEventHandler;\n}(EventTarget));\n\n\nexport default MapBrowserEventHandler;\n\n//# sourceMappingURL=MapBrowserEventHandler.js.map","/**\n * @module ol/MapEventType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n\n /**\n * Triggered after a map frame is rendered.\n * @event module:ol/MapEvent~MapEvent#postrender\n * @api\n */\n POSTRENDER: 'postrender',\n\n /**\n * Triggered when the map starts moving.\n * @event module:ol/MapEvent~MapEvent#movestart\n * @api\n */\n MOVESTART: 'movestart',\n\n /**\n * Triggered after the map is moved.\n * @event module:ol/MapEvent~MapEvent#moveend\n * @api\n */\n MOVEEND: 'moveend'\n\n};\n\n//# sourceMappingURL=MapEventType.js.map","/**\n * @module ol/MapProperty\n */\n\n/**\n * @enum {string}\n */\nexport default {\n LAYERGROUP: 'layergroup',\n SIZE: 'size',\n TARGET: 'target',\n VIEW: 'view'\n};\n\n//# sourceMappingURL=MapProperty.js.map","/**\n * @module ol/render/EventType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n /**\n * @event module:ol/render/Event~RenderEvent#postcompose\n * @api\n */\n POSTCOMPOSE: 'postcompose',\n /**\n * @event module:ol/render/Event~RenderEvent#precompose\n * @api\n */\n PRECOMPOSE: 'precompose',\n /**\n * @event module:ol/render/Event~RenderEvent#render\n * @api\n */\n RENDER: 'render',\n /**\n * Triggered when rendering is complete, i.e. all sources and tiles have\n * finished loading for the current viewport, and all tiles are faded in.\n * @event module:ol/render/Event~RenderEvent#rendercomplete\n * @api\n */\n RENDERCOMPLETE: 'rendercomplete'\n};\n\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/TileState\n */\n\n/**\n * @enum {number}\n */\nexport default {\n IDLE: 0,\n LOADING: 1,\n LOADED: 2,\n /**\n * Indicates that tile loading failed\n * @type {number}\n */\n ERROR: 3,\n EMPTY: 4,\n ABORT: 5\n};\n\n//# sourceMappingURL=TileState.js.map","/**\n * @module ol/asserts\n */\nimport AssertionError from './AssertionError.js';\n\n/**\n * @param {*} assertion Assertion we expected to be truthy.\n * @param {number} errorCode Error code.\n */\nexport function assert(assertion, errorCode) {\n if (!assertion) {\n throw new AssertionError(errorCode);\n }\n}\n\n//# sourceMappingURL=asserts.js.map","/**\n * @module ol/structs/PriorityQueue\n */\nimport {assert} from '../asserts.js';\nimport {clear} from '../obj.js';\n\n\n/**\n * @type {number}\n */\nexport var DROP = Infinity;\n\n\n/**\n * @classdesc\n * Priority queue.\n *\n * The implementation is inspired from the Closure Library's Heap class and\n * Python's heapq module.\n *\n * See http://closure-library.googlecode.com/svn/docs/closure_goog_structs_heap.js.source.html\n * and http://hg.python.org/cpython/file/2.7/Lib/heapq.py.\n *\n * @template T\n */\nvar PriorityQueue = function PriorityQueue(priorityFunction, keyFunction) {\n\n /**\n * @type {function(T): number}\n * @private\n */\n this.priorityFunction_ = priorityFunction;\n\n /**\n * @type {function(T): string}\n * @private\n */\n this.keyFunction_ = keyFunction;\n\n /**\n * @type {Array<T>}\n * @private\n */\n this.elements_ = [];\n\n /**\n * @type {Array<number>}\n * @private\n */\n this.priorities_ = [];\n\n /**\n * @type {!Object<string, boolean>}\n * @private\n */\n this.queuedElements_ = {};\n\n};\n\n/**\n * FIXME empty description for jsdoc\n */\nPriorityQueue.prototype.clear = function clear$1 () {\n this.elements_.length = 0;\n this.priorities_.length = 0;\n clear(this.queuedElements_);\n};\n\n\n/**\n * Remove and return the highest-priority element. O(log N).\n * @return {T} Element.\n */\nPriorityQueue.prototype.dequeue = function dequeue () {\n var elements = this.elements_;\n var priorities = this.priorities_;\n var element = elements[0];\n if (elements.length == 1) {\n elements.length = 0;\n priorities.length = 0;\n } else {\n elements[0] = elements.pop();\n priorities[0] = priorities.pop();\n this.siftUp_(0);\n }\n var elementKey = this.keyFunction_(element);\n delete this.queuedElements_[elementKey];\n return element;\n};\n\n\n/**\n * Enqueue an element. O(log N).\n * @param {T} element Element.\n * @return {boolean} The element was added to the queue.\n */\nPriorityQueue.prototype.enqueue = function enqueue (element) {\n assert(!(this.keyFunction_(element) in this.queuedElements_),\n 31); // Tried to enqueue an `element` that was already added to the queue\n var priority = this.priorityFunction_(element);\n if (priority != DROP) {\n this.elements_.push(element);\n this.priorities_.push(priority);\n this.queuedElements_[this.keyFunction_(element)] = true;\n this.siftDown_(0, this.elements_.length - 1);\n return true;\n }\n return false;\n};\n\n\n/**\n * @return {number} Count.\n */\nPriorityQueue.prototype.getCount = function getCount () {\n return this.elements_.length;\n};\n\n\n/**\n * Gets the index of the left child of the node at the given index.\n * @param {number} index The index of the node to get the left child for.\n * @return {number} The index of the left child.\n * @private\n */\nPriorityQueue.prototype.getLeftChildIndex_ = function getLeftChildIndex_ (index) {\n return index * 2 + 1;\n};\n\n\n/**\n * Gets the index of the right child of the node at the given index.\n * @param {number} index The index of the node to get the right child for.\n * @return {number} The index of the right child.\n * @private\n */\nPriorityQueue.prototype.getRightChildIndex_ = function getRightChildIndex_ (index) {\n return index * 2 + 2;\n};\n\n\n/**\n * Gets the index of the parent of the node at the given index.\n * @param {number} index The index of the node to get the parent for.\n * @return {number} The index of the parent.\n * @private\n */\nPriorityQueue.prototype.getParentIndex_ = function getParentIndex_ (index) {\n return (index - 1) >> 1;\n};\n\n\n/**\n * Make this a heap. O(N).\n * @private\n */\nPriorityQueue.prototype.heapify_ = function heapify_ () {\n var i;\n for (i = (this.elements_.length >> 1) - 1; i >= 0; i--) {\n this.siftUp_(i);\n }\n};\n\n\n/**\n * @return {boolean} Is empty.\n */\nPriorityQueue.prototype.isEmpty = function isEmpty () {\n return this.elements_.length === 0;\n};\n\n\n/**\n * @param {string} key Key.\n * @return {boolean} Is key queued.\n */\nPriorityQueue.prototype.isKeyQueued = function isKeyQueued (key) {\n return key in this.queuedElements_;\n};\n\n\n/**\n * @param {T} element Element.\n * @return {boolean} Is queued.\n */\nPriorityQueue.prototype.isQueued = function isQueued (element) {\n return this.isKeyQueued(this.keyFunction_(element));\n};\n\n\n/**\n * @param {number} index The index of the node to move down.\n * @private\n */\nPriorityQueue.prototype.siftUp_ = function siftUp_ (index) {\n var elements = this.elements_;\n var priorities = this.priorities_;\n var count = elements.length;\n var element = elements[index];\n var priority = priorities[index];\n var startIndex = index;\n\n while (index < (count >> 1)) {\n var lIndex = this.getLeftChildIndex_(index);\n var rIndex = this.getRightChildIndex_(index);\n\n var smallerChildIndex = rIndex < count &&\n priorities[rIndex] < priorities[lIndex] ?\n rIndex : lIndex;\n\n elements[index] = elements[smallerChildIndex];\n priorities[index] = priorities[smallerChildIndex];\n index = smallerChildIndex;\n }\n\n elements[index] = element;\n priorities[index] = priority;\n this.siftDown_(startIndex, index);\n};\n\n\n/**\n * @param {number} startIndex The index of the root.\n * @param {number} index The index of the node to move up.\n * @private\n */\nPriorityQueue.prototype.siftDown_ = function siftDown_ (startIndex, index) {\n var elements = this.elements_;\n var priorities = this.priorities_;\n var element = elements[index];\n var priority = priorities[index];\n\n while (index > startIndex) {\n var parentIndex = this.getParentIndex_(index);\n if (priorities[parentIndex] > priority) {\n elements[index] = elements[parentIndex];\n priorities[index] = priorities[parentIndex];\n index = parentIndex;\n } else {\n break;\n }\n }\n elements[index] = element;\n priorities[index] = priority;\n};\n\n\n/**\n * FIXME empty description for jsdoc\n */\nPriorityQueue.prototype.reprioritize = function reprioritize () {\n var priorityFunction = this.priorityFunction_;\n var elements = this.elements_;\n var priorities = this.priorities_;\n var index = 0;\n var n = elements.length;\n var element, i, priority;\n for (i = 0; i < n; ++i) {\n element = elements[i];\n priority = priorityFunction(element);\n if (priority == DROP) {\n delete this.queuedElements_[this.keyFunction_(element)];\n } else {\n priorities[index] = priority;\n elements[index++] = element;\n }\n }\n elements.length = index;\n priorities.length = index;\n this.heapify_();\n};\n\n\nexport default PriorityQueue;\n\n//# sourceMappingURL=PriorityQueue.js.map","/**\n * @module ol/TileQueue\n */\nimport TileState from './TileState.js';\nimport {listen, unlisten} from './events.js';\nimport EventType from './events/EventType.js';\nimport PriorityQueue from './structs/PriorityQueue.js';\n\n\n/**\n * @typedef {function(import(\"./Tile.js\").default, string, import(\"./coordinate.js\").Coordinate, number): number} PriorityFunction\n */\n\n\nvar TileQueue = /*@__PURE__*/(function (PriorityQueue) {\n function TileQueue(tilePriorityFunction, tileChangeCallback) {\n\n PriorityQueue.call(\n /**\n * @param {Array} element Element.\n * @return {number} Priority.\n */\n this, function(element) {\n return tilePriorityFunction.apply(null, element);\n },\n /**\n * @param {Array} element Element.\n * @return {string} Key.\n */\n function(element) {\n return (/** @type {import(\"./Tile.js\").default} */ (element[0]).getKey());\n });\n\n /**\n * @private\n * @type {function(): ?}\n */\n this.tileChangeCallback_ = tileChangeCallback;\n\n /**\n * @private\n * @type {number}\n */\n this.tilesLoading_ = 0;\n\n /**\n * @private\n * @type {!Object<string,boolean>}\n */\n this.tilesLoadingKeys_ = {};\n\n }\n\n if ( PriorityQueue ) TileQueue.__proto__ = PriorityQueue;\n TileQueue.prototype = Object.create( PriorityQueue && PriorityQueue.prototype );\n TileQueue.prototype.constructor = TileQueue;\n\n /**\n * @inheritDoc\n */\n TileQueue.prototype.enqueue = function enqueue (element) {\n var added = PriorityQueue.prototype.enqueue.call(this, element);\n if (added) {\n var tile = element[0];\n listen(tile, EventType.CHANGE, this.handleTileChange, this);\n }\n return added;\n };\n\n /**\n * @return {number} Number of tiles loading.\n */\n TileQueue.prototype.getTilesLoading = function getTilesLoading () {\n return this.tilesLoading_;\n };\n\n /**\n * @param {import(\"./events/Event.js\").default} event Event.\n * @protected\n */\n TileQueue.prototype.handleTileChange = function handleTileChange (event) {\n var tile = /** @type {import(\"./Tile.js\").default} */ (event.target);\n var state = tile.getState();\n if (state === TileState.LOADED || state === TileState.ERROR ||\n state === TileState.EMPTY || state === TileState.ABORT) {\n unlisten(tile, EventType.CHANGE, this.handleTileChange, this);\n var tileKey = tile.getKey();\n if (tileKey in this.tilesLoadingKeys_) {\n delete this.tilesLoadingKeys_[tileKey];\n --this.tilesLoading_;\n }\n this.tileChangeCallback_();\n }\n };\n\n /**\n * @param {number} maxTotalLoading Maximum number tiles to load simultaneously.\n * @param {number} maxNewLoads Maximum number of new tiles to load.\n */\n TileQueue.prototype.loadMoreTiles = function loadMoreTiles (maxTotalLoading, maxNewLoads) {\n var newLoads = 0;\n var abortedTiles = false;\n var state, tile, tileKey;\n while (this.tilesLoading_ < maxTotalLoading && newLoads < maxNewLoads &&\n this.getCount() > 0) {\n tile = /** @type {import(\"./Tile.js\").default} */ (this.dequeue()[0]);\n tileKey = tile.getKey();\n state = tile.getState();\n if (state === TileState.ABORT) {\n abortedTiles = true;\n } else if (state === TileState.IDLE && !(tileKey in this.tilesLoadingKeys_)) {\n this.tilesLoadingKeys_[tileKey] = true;\n ++this.tilesLoading_;\n ++newLoads;\n tile.load();\n }\n }\n if (newLoads === 0 && abortedTiles) {\n // Do not stop the render loop when all wanted tiles were aborted due to\n // a small, saturated tile cache.\n this.tileChangeCallback_();\n }\n };\n\n return TileQueue;\n}(PriorityQueue));\n\n\nexport default TileQueue;\n\n//# sourceMappingURL=TileQueue.js.map","/**\n * @module ol/tilegrid/common\n */\n\n/**\n * Default maximum zoom for default tile grids.\n * @type {number}\n */\nexport var DEFAULT_MAX_ZOOM = 42;\n\n/**\n * Default tile size.\n * @type {number}\n */\nexport var DEFAULT_TILE_SIZE = 256;\n\n//# sourceMappingURL=common.js.map","/**\n * @module ol/math\n */\nimport {assert} from './asserts.js';\n\n/**\n * Takes a number and clamps it to within the provided bounds.\n * @param {number} value The input number.\n * @param {number} min The minimum value to return.\n * @param {number} max The maximum value to return.\n * @return {number} The input number if it is within bounds, or the nearest\n * number within the bounds.\n */\nexport function clamp(value, min, max) {\n return Math.min(Math.max(value, min), max);\n}\n\n\n/**\n * Return the hyperbolic cosine of a given number. The method will use the\n * native `Math.cosh` function if it is available, otherwise the hyperbolic\n * cosine will be calculated via the reference implementation of the Mozilla\n * developer network.\n *\n * @param {number} x X.\n * @return {number} Hyperbolic cosine of x.\n */\nexport var cosh = (function() {\n // Wrapped in a iife, to save the overhead of checking for the native\n // implementation on every invocation.\n var cosh;\n if ('cosh' in Math) {\n // The environment supports the native Math.cosh function, use it…\n cosh = Math.cosh;\n } else {\n // … else, use the reference implementation of MDN:\n cosh = function(x) {\n var y = /** @type {Math} */ (Math).exp(x);\n return (y + 1 / y) / 2;\n };\n }\n return cosh;\n}());\n\n\n/**\n * @param {number} x X.\n * @return {number} The smallest power of two greater than or equal to x.\n */\nexport function roundUpToPowerOfTwo(x) {\n assert(0 < x, 29); // `x` must be greater than `0`\n return Math.pow(2, Math.ceil(Math.log(x) / Math.LN2));\n}\n\n\n/**\n * Returns the square of the closest distance between the point (x, y) and the\n * line segment (x1, y1) to (x2, y2).\n * @param {number} x X.\n * @param {number} y Y.\n * @param {number} x1 X1.\n * @param {number} y1 Y1.\n * @param {number} x2 X2.\n * @param {number} y2 Y2.\n * @return {number} Squared distance.\n */\nexport function squaredSegmentDistance(x, y, x1, y1, x2, y2) {\n var dx = x2 - x1;\n var dy = y2 - y1;\n if (dx !== 0 || dy !== 0) {\n var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);\n if (t > 1) {\n x1 = x2;\n y1 = y2;\n } else if (t > 0) {\n x1 += dx * t;\n y1 += dy * t;\n }\n }\n return squaredDistance(x, y, x1, y1);\n}\n\n\n/**\n * Returns the square of the distance between the points (x1, y1) and (x2, y2).\n * @param {number} x1 X1.\n * @param {number} y1 Y1.\n * @param {number} x2 X2.\n * @param {number} y2 Y2.\n * @return {number} Squared distance.\n */\nexport function squaredDistance(x1, y1, x2, y2) {\n var dx = x2 - x1;\n var dy = y2 - y1;\n return dx * dx + dy * dy;\n}\n\n\n/**\n * Solves system of linear equations using Gaussian elimination method.\n *\n * @param {Array<Array<number>>} mat Augmented matrix (n x n + 1 column)\n * in row-major order.\n * @return {Array<number>} The resulting vector.\n */\nexport function solveLinearSystem(mat) {\n var n = mat.length;\n\n for (var i = 0; i < n; i++) {\n // Find max in the i-th column (ignoring i - 1 first rows)\n var maxRow = i;\n var maxEl = Math.abs(mat[i][i]);\n for (var r = i + 1; r < n; r++) {\n var absValue = Math.abs(mat[r][i]);\n if (absValue > maxEl) {\n maxEl = absValue;\n maxRow = r;\n }\n }\n\n if (maxEl === 0) {\n return null; // matrix is singular\n }\n\n // Swap max row with i-th (current) row\n var tmp = mat[maxRow];\n mat[maxRow] = mat[i];\n mat[i] = tmp;\n\n // Subtract the i-th row to make all the remaining rows 0 in the i-th column\n for (var j = i + 1; j < n; j++) {\n var coef = -mat[j][i] / mat[i][i];\n for (var k = i; k < n + 1; k++) {\n if (i == k) {\n mat[j][k] = 0;\n } else {\n mat[j][k] += coef * mat[i][k];\n }\n }\n }\n }\n\n // Solve Ax=b for upper triangular matrix A (mat)\n var x = new Array(n);\n for (var l = n - 1; l >= 0; l--) {\n x[l] = mat[l][n] / mat[l][l];\n for (var m = l - 1; m >= 0; m--) {\n mat[m][n] -= mat[m][l] * x[l];\n }\n }\n return x;\n}\n\n\n/**\n * Converts radians to to degrees.\n *\n * @param {number} angleInRadians Angle in radians.\n * @return {number} Angle in degrees.\n */\nexport function toDegrees(angleInRadians) {\n return angleInRadians * 180 / Math.PI;\n}\n\n\n/**\n * Converts degrees to radians.\n *\n * @param {number} angleInDegrees Angle in degrees.\n * @return {number} Angle in radians.\n */\nexport function toRadians(angleInDegrees) {\n return angleInDegrees * Math.PI / 180;\n}\n\n/**\n * Returns the modulo of a / b, depending on the sign of b.\n *\n * @param {number} a Dividend.\n * @param {number} b Divisor.\n * @return {number} Modulo.\n */\nexport function modulo(a, b) {\n var r = a % b;\n return r * b < 0 ? r + b : r;\n}\n\n/**\n * Calculates the linearly interpolated value of x between a and b.\n *\n * @param {number} a Number\n * @param {number} b Number\n * @param {number} x Value to be interpolated.\n * @return {number} Interpolated value.\n */\nexport function lerp(a, b, x) {\n return a + x * (b - a);\n}\n\n//# sourceMappingURL=math.js.map","/**\n * @module ol/centerconstraint\n */\nimport {clamp} from './math.js';\n\n\n/**\n * @typedef {function((import(\"./coordinate.js\").Coordinate|undefined)): (import(\"./coordinate.js\").Coordinate|undefined)} Type\n */\n\n\n/**\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @return {Type} The constraint.\n */\nexport function createExtent(extent) {\n return (\n /**\n * @param {import(\"./coordinate.js\").Coordinate=} center Center.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Center.\n */\n function(center) {\n if (center) {\n return [\n clamp(center[0], extent[0], extent[2]),\n clamp(center[1], extent[1], extent[3])\n ];\n } else {\n return undefined;\n }\n }\n );\n}\n\n\n/**\n * @param {import(\"./coordinate.js\").Coordinate=} center Center.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Center.\n */\nexport function none(center) {\n return center;\n}\n\n//# sourceMappingURL=centerconstraint.js.map","/**\n * @module ol/resolutionconstraint\n */\nimport {linearFindNearest} from './array.js';\nimport {clamp} from './math.js';\n\n\n/**\n * @typedef {function((number|undefined), number, number): (number|undefined)} Type\n */\n\n\n/**\n * @param {Array<number>} resolutions Resolutions.\n * @return {Type} Zoom function.\n */\nexport function createSnapToResolutions(resolutions) {\n return (\n /**\n * @param {number|undefined} resolution Resolution.\n * @param {number} delta Delta.\n * @param {number} direction Direction.\n * @return {number|undefined} Resolution.\n */\n function(resolution, delta, direction) {\n if (resolution !== undefined) {\n var z = linearFindNearest(resolutions, resolution, direction);\n z = clamp(z + delta, 0, resolutions.length - 1);\n var index = Math.floor(z);\n if (z != index && index < resolutions.length - 1) {\n var power = resolutions[index] / resolutions[index + 1];\n return resolutions[index] / Math.pow(power, z - index);\n } else {\n return resolutions[index];\n }\n } else {\n return undefined;\n }\n }\n );\n}\n\n\n/**\n * @param {number} power Power.\n * @param {number} maxResolution Maximum resolution.\n * @param {number=} opt_maxLevel Maximum level.\n * @return {Type} Zoom function.\n */\nexport function createSnapToPower(power, maxResolution, opt_maxLevel) {\n return (\n /**\n * @param {number|undefined} resolution Resolution.\n * @param {number} delta Delta.\n * @param {number} direction Direction.\n * @return {number|undefined} Resolution.\n */\n function(resolution, delta, direction) {\n if (resolution !== undefined) {\n var offset = -direction / 2 + 0.5;\n var oldLevel = Math.floor(\n Math.log(maxResolution / resolution) / Math.log(power) + offset);\n var newLevel = Math.max(oldLevel + delta, 0);\n if (opt_maxLevel !== undefined) {\n newLevel = Math.min(newLevel, opt_maxLevel);\n }\n return maxResolution / Math.pow(power, newLevel);\n } else {\n return undefined;\n }\n });\n}\n\n//# sourceMappingURL=resolutionconstraint.js.map","/**\n * @module ol/rotationconstraint\n */\nimport {toRadians} from './math.js';\n\n\n/**\n * @typedef {function((number|undefined), number): (number|undefined)} Type\n */\n\n\n/**\n * @param {number|undefined} rotation Rotation.\n * @param {number} delta Delta.\n * @return {number|undefined} Rotation.\n */\nexport function disable(rotation, delta) {\n if (rotation !== undefined) {\n return 0;\n } else {\n return undefined;\n }\n}\n\n\n/**\n * @param {number|undefined} rotation Rotation.\n * @param {number} delta Delta.\n * @return {number|undefined} Rotation.\n */\nexport function none(rotation, delta) {\n if (rotation !== undefined) {\n return rotation + delta;\n } else {\n return undefined;\n }\n}\n\n\n/**\n * @param {number} n N.\n * @return {Type} Rotation constraint.\n */\nexport function createSnapToN(n) {\n var theta = 2 * Math.PI / n;\n return (\n /**\n * @param {number|undefined} rotation Rotation.\n * @param {number} delta Delta.\n * @return {number|undefined} Rotation.\n */\n function(rotation, delta) {\n if (rotation !== undefined) {\n rotation = Math.floor((rotation + delta) / theta + 0.5) * theta;\n return rotation;\n } else {\n return undefined;\n }\n });\n}\n\n\n/**\n * @param {number=} opt_tolerance Tolerance.\n * @return {Type} Rotation constraint.\n */\nexport function createSnapToZero(opt_tolerance) {\n var tolerance = opt_tolerance || toRadians(5);\n return (\n /**\n * @param {number|undefined} rotation Rotation.\n * @param {number} delta Delta.\n * @return {number|undefined} Rotation.\n */\n function(rotation, delta) {\n if (rotation !== undefined) {\n if (Math.abs(rotation + delta) <= tolerance) {\n return 0;\n } else {\n return rotation + delta;\n }\n } else {\n return undefined;\n }\n });\n}\n\n//# sourceMappingURL=rotationconstraint.js.map","/**\n * @module ol/ViewHint\n */\n\n/**\n * @enum {number}\n */\nexport default {\n ANIMATING: 0,\n INTERACTING: 1\n};\n\n//# sourceMappingURL=ViewHint.js.map","/**\n * @module ol/ViewProperty\n */\n\n/**\n * @enum {string}\n */\nexport default {\n CENTER: 'center',\n RESOLUTION: 'resolution',\n ROTATION: 'rotation'\n};\n\n//# sourceMappingURL=ViewProperty.js.map","/**\n * @module ol/string\n */\n\n/**\n * @param {number} number Number to be formatted\n * @param {number} width The desired width\n * @param {number=} opt_precision Precision of the output string (i.e. number of decimal places)\n * @returns {string} Formatted string\n */\nexport function padNumber(number, width, opt_precision) {\n var numberString = opt_precision !== undefined ? number.toFixed(opt_precision) : '' + number;\n var decimal = numberString.indexOf('.');\n decimal = decimal === -1 ? numberString.length : decimal;\n return decimal > width ? numberString : new Array(1 + width - decimal).join('0') + numberString;\n}\n\n\n/**\n * Adapted from https://github.com/omichelsen/compare-versions/blob/master/index.js\n * @param {string|number} v1 First version\n * @param {string|number} v2 Second version\n * @returns {number} Value\n */\nexport function compareVersions(v1, v2) {\n var s1 = ('' + v1).split('.');\n var s2 = ('' + v2).split('.');\n\n for (var i = 0; i < Math.max(s1.length, s2.length); i++) {\n var n1 = parseInt(s1[i] || '0', 10);\n var n2 = parseInt(s2[i] || '0', 10);\n\n if (n1 > n2) {\n return 1;\n }\n if (n2 > n1) {\n return -1;\n }\n }\n\n return 0;\n}\n\n//# sourceMappingURL=string.js.map","/**\n * @module ol/coordinate\n */\nimport {modulo} from './math.js';\nimport {padNumber} from './string.js';\n\n\n/**\n * An array of numbers representing an xy coordinate. Example: `[16, 48]`.\n * @typedef {Array<number>} Coordinate\n * @api\n */\n\n\n/**\n * A function that takes a {@link module:ol/coordinate~Coordinate} and\n * transforms it into a `{string}`.\n *\n * @typedef {function((Coordinate|undefined)): string} CoordinateFormat\n * @api\n */\n\n\n/**\n * Add `delta` to `coordinate`. `coordinate` is modified in place and returned\n * by the function.\n *\n * Example:\n *\n * import {add} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * add(coord, [-2, 4]);\n * // coord is now [5.85, 51.983333]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {Coordinate} delta Delta.\n * @return {Coordinate} The input coordinate adjusted by\n * the given delta.\n * @api\n */\nexport function add(coordinate, delta) {\n coordinate[0] += delta[0];\n coordinate[1] += delta[1];\n return coordinate;\n}\n\n\n/**\n * Calculates the point closest to the passed coordinate on the passed circle.\n *\n * @param {Coordinate} coordinate The coordinate.\n * @param {import(\"./geom/Circle.js\").default} circle The circle.\n * @return {Coordinate} Closest point on the circumference.\n */\nexport function closestOnCircle(coordinate, circle) {\n var r = circle.getRadius();\n var center = circle.getCenter();\n var x0 = center[0];\n var y0 = center[1];\n var x1 = coordinate[0];\n var y1 = coordinate[1];\n\n var dx = x1 - x0;\n var dy = y1 - y0;\n if (dx === 0 && dy === 0) {\n dx = 1;\n }\n var d = Math.sqrt(dx * dx + dy * dy);\n\n var x = x0 + r * dx / d;\n var y = y0 + r * dy / d;\n\n return [x, y];\n}\n\n\n/**\n * Calculates the point closest to the passed coordinate on the passed segment.\n * This is the foot of the perpendicular of the coordinate to the segment when\n * the foot is on the segment, or the closest segment coordinate when the foot\n * is outside the segment.\n *\n * @param {Coordinate} coordinate The coordinate.\n * @param {Array<Coordinate>} segment The two coordinates\n * of the segment.\n * @return {Coordinate} The foot of the perpendicular of\n * the coordinate to the segment.\n */\nexport function closestOnSegment(coordinate, segment) {\n var x0 = coordinate[0];\n var y0 = coordinate[1];\n var start = segment[0];\n var end = segment[1];\n var x1 = start[0];\n var y1 = start[1];\n var x2 = end[0];\n var y2 = end[1];\n var dx = x2 - x1;\n var dy = y2 - y1;\n var along = (dx === 0 && dy === 0) ? 0 :\n ((dx * (x0 - x1)) + (dy * (y0 - y1))) / ((dx * dx + dy * dy) || 0);\n var x, y;\n if (along <= 0) {\n x = x1;\n y = y1;\n } else if (along >= 1) {\n x = x2;\n y = y2;\n } else {\n x = x1 + along * dx;\n y = y1 + along * dy;\n }\n return [x, y];\n}\n\n\n/**\n * Returns a {@link module:ol/coordinate~CoordinateFormat} function that can be\n * used to format\n * a {Coordinate} to a string.\n *\n * Example without specifying the fractional digits:\n *\n * import {createStringXY} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var stringifyFunc = createStringXY();\n * var out = stringifyFunc(coord);\n * // out is now '8, 48'\n *\n * Example with explicitly specifying 2 fractional digits:\n *\n * import {createStringXY} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var stringifyFunc = createStringXY(2);\n * var out = stringifyFunc(coord);\n * // out is now '7.85, 47.98'\n *\n * @param {number=} opt_fractionDigits The number of digits to include\n * after the decimal point. Default is `0`.\n * @return {CoordinateFormat} Coordinate format.\n * @api\n */\nexport function createStringXY(opt_fractionDigits) {\n return (\n /**\n * @param {Coordinate} coordinate Coordinate.\n * @return {string} String XY.\n */\n function(coordinate) {\n return toStringXY(coordinate, opt_fractionDigits);\n }\n );\n}\n\n\n/**\n * @param {string} hemispheres Hemispheres.\n * @param {number} degrees Degrees.\n * @param {number=} opt_fractionDigits The number of digits to include\n * after the decimal point. Default is `0`.\n * @return {string} String.\n */\nexport function degreesToStringHDMS(hemispheres, degrees, opt_fractionDigits) {\n var normalizedDegrees = modulo(degrees + 180, 360) - 180;\n var x = Math.abs(3600 * normalizedDegrees);\n var dflPrecision = opt_fractionDigits || 0;\n var precision = Math.pow(10, dflPrecision);\n\n var deg = Math.floor(x / 3600);\n var min = Math.floor((x - deg * 3600) / 60);\n var sec = x - (deg * 3600) - (min * 60);\n sec = Math.ceil(sec * precision) / precision;\n\n if (sec >= 60) {\n sec = 0;\n min += 1;\n }\n\n if (min >= 60) {\n min = 0;\n deg += 1;\n }\n\n return deg + '\\u00b0 ' + padNumber(min, 2) + '\\u2032 ' +\n padNumber(sec, 2, dflPrecision) + '\\u2033' +\n (normalizedDegrees == 0 ? '' : ' ' + hemispheres.charAt(normalizedDegrees < 0 ? 1 : 0));\n}\n\n\n/**\n * Transforms the given {@link module:ol/coordinate~Coordinate} to a string\n * using the given string template. The strings `{x}` and `{y}` in the template\n * will be replaced with the first and second coordinate values respectively.\n *\n * Example without specifying the fractional digits:\n *\n * import {format} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var template = 'Coordinate is ({x}|{y}).';\n * var out = format(coord, template);\n * // out is now 'Coordinate is (8|48).'\n *\n * Example explicitly specifying the fractional digits:\n *\n * import {format} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var template = 'Coordinate is ({x}|{y}).';\n * var out = format(coord, template, 2);\n * // out is now 'Coordinate is (7.85|47.98).'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {string} template A template string with `{x}` and `{y}` placeholders\n * that will be replaced by first and second coordinate values.\n * @param {number=} opt_fractionDigits The number of digits to include\n * after the decimal point. Default is `0`.\n * @return {string} Formatted coordinate.\n * @api\n */\nexport function format(coordinate, template, opt_fractionDigits) {\n if (coordinate) {\n return template\n .replace('{x}', coordinate[0].toFixed(opt_fractionDigits))\n .replace('{y}', coordinate[1].toFixed(opt_fractionDigits));\n } else {\n return '';\n }\n}\n\n\n/**\n * @param {Coordinate} coordinate1 First coordinate.\n * @param {Coordinate} coordinate2 Second coordinate.\n * @return {boolean} The two coordinates are equal.\n */\nexport function equals(coordinate1, coordinate2) {\n var equals = true;\n for (var i = coordinate1.length - 1; i >= 0; --i) {\n if (coordinate1[i] != coordinate2[i]) {\n equals = false;\n break;\n }\n }\n return equals;\n}\n\n\n/**\n * Rotate `coordinate` by `angle`. `coordinate` is modified in place and\n * returned by the function.\n *\n * Example:\n *\n * import {rotate} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var rotateRadians = Math.PI / 2; // 90 degrees\n * rotate(coord, rotateRadians);\n * // coord is now [-47.983333, 7.85]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number} angle Angle in radian.\n * @return {Coordinate} Coordinate.\n * @api\n */\nexport function rotate(coordinate, angle) {\n var cosAngle = Math.cos(angle);\n var sinAngle = Math.sin(angle);\n var x = coordinate[0] * cosAngle - coordinate[1] * sinAngle;\n var y = coordinate[1] * cosAngle + coordinate[0] * sinAngle;\n coordinate[0] = x;\n coordinate[1] = y;\n return coordinate;\n}\n\n\n/**\n * Scale `coordinate` by `scale`. `coordinate` is modified in place and returned\n * by the function.\n *\n * Example:\n *\n * import {scale as scaleCoordinate} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var scale = 1.2;\n * scaleCoordinate(coord, scale);\n * // coord is now [9.42, 57.5799996]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number} scale Scale factor.\n * @return {Coordinate} Coordinate.\n */\nexport function scale(coordinate, scale) {\n coordinate[0] *= scale;\n coordinate[1] *= scale;\n return coordinate;\n}\n\n\n/**\n * @param {Coordinate} coord1 First coordinate.\n * @param {Coordinate} coord2 Second coordinate.\n * @return {number} Squared distance between coord1 and coord2.\n */\nexport function squaredDistance(coord1, coord2) {\n var dx = coord1[0] - coord2[0];\n var dy = coord1[1] - coord2[1];\n return dx * dx + dy * dy;\n}\n\n\n/**\n * @param {Coordinate} coord1 First coordinate.\n * @param {Coordinate} coord2 Second coordinate.\n * @return {number} Distance between coord1 and coord2.\n */\nexport function distance(coord1, coord2) {\n return Math.sqrt(squaredDistance(coord1, coord2));\n}\n\n\n/**\n * Calculate the squared distance from a coordinate to a line segment.\n *\n * @param {Coordinate} coordinate Coordinate of the point.\n * @param {Array<Coordinate>} segment Line segment (2\n * coordinates).\n * @return {number} Squared distance from the point to the line segment.\n */\nexport function squaredDistanceToSegment(coordinate, segment) {\n return squaredDistance(coordinate,\n closestOnSegment(coordinate, segment));\n}\n\n\n/**\n * Format a geographic coordinate with the hemisphere, degrees, minutes, and\n * seconds.\n *\n * Example without specifying fractional digits:\n *\n * import {toStringHDMS} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var out = toStringHDMS(coord);\n * // out is now '47° 58′ 60″ N 7° 50′ 60″ E'\n *\n * Example explicitly specifying 1 fractional digit:\n *\n * import {toStringHDMS} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var out = toStringHDMS(coord, 1);\n * // out is now '47° 58′ 60.0″ N 7° 50′ 60.0″ E'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number=} opt_fractionDigits The number of digits to include\n * after the decimal point. Default is `0`.\n * @return {string} Hemisphere, degrees, minutes and seconds.\n * @api\n */\nexport function toStringHDMS(coordinate, opt_fractionDigits) {\n if (coordinate) {\n return degreesToStringHDMS('NS', coordinate[1], opt_fractionDigits) + ' ' +\n degreesToStringHDMS('EW', coordinate[0], opt_fractionDigits);\n } else {\n return '';\n }\n}\n\n\n/**\n * Format a coordinate as a comma delimited string.\n *\n * Example without specifying fractional digits:\n *\n * import {toStringXY} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var out = toStringXY(coord);\n * // out is now '8, 48'\n *\n * Example explicitly specifying 1 fractional digit:\n *\n * import {toStringXY} from 'ol/coordinate';\n *\n * var coord = [7.85, 47.983333];\n * var out = toStringXY(coord, 1);\n * // out is now '7.8, 48.0'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number=} opt_fractionDigits The number of digits to include\n * after the decimal point. Default is `0`.\n * @return {string} XY.\n * @api\n */\nexport function toStringXY(coordinate, opt_fractionDigits) {\n return format(coordinate, '{x}, {y}', opt_fractionDigits);\n}\n\n//# sourceMappingURL=coordinate.js.map","/**\n * @module ol/easing\n */\n\n\n/**\n * Start slow and speed up.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function easeIn(t) {\n return Math.pow(t, 3);\n}\n\n\n/**\n * Start fast and slow down.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function easeOut(t) {\n return 1 - easeIn(1 - t);\n}\n\n\n/**\n * Start slow, speed up, and then slow down again.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function inAndOut(t) {\n return 3 * t * t - 2 * t * t * t;\n}\n\n\n/**\n * Maintain a constant speed over time.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function linear(t) {\n return t;\n}\n\n\n/**\n * Start slow, speed up, and at the very end slow down again. This has the\n * same general behavior as {@link module:ol/easing~inAndOut}, but the final\n * slowdown is delayed.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function upAndDown(t) {\n if (t < 0.5) {\n return inAndOut(2 * t);\n } else {\n return 1 - inAndOut(2 * (t - 0.5));\n }\n}\n\n//# sourceMappingURL=easing.js.map","/**\n * @module ol/extent/Corner\n */\n\n/**\n * Extent corner.\n * @enum {string}\n */\nexport default {\n BOTTOM_LEFT: 'bottom-left',\n BOTTOM_RIGHT: 'bottom-right',\n TOP_LEFT: 'top-left',\n TOP_RIGHT: 'top-right'\n};\n\n//# sourceMappingURL=Corner.js.map","/**\n * @module ol/extent/Relationship\n */\n\n/**\n * Relationship to an extent.\n * @enum {number}\n */\nexport default {\n UNKNOWN: 0,\n INTERSECTING: 1,\n ABOVE: 2,\n RIGHT: 4,\n BELOW: 8,\n LEFT: 16\n};\n\n//# sourceMappingURL=Relationship.js.map","/**\n * @module ol/extent\n */\nimport {assert} from './asserts.js';\nimport Corner from './extent/Corner.js';\nimport Relationship from './extent/Relationship.js';\n\n\n/**\n * An array of numbers representing an extent: `[minx, miny, maxx, maxy]`.\n * @typedef {Array<number>} Extent\n * @api\n */\n\n/**\n * Build an extent that includes all given coordinates.\n *\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @return {Extent} Bounding extent.\n * @api\n */\nexport function boundingExtent(coordinates) {\n var extent = createEmpty();\n for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n extendCoordinate(extent, coordinates[i]);\n }\n return extent;\n}\n\n\n/**\n * @param {Array<number>} xs Xs.\n * @param {Array<number>} ys Ys.\n * @param {Extent=} opt_extent Destination extent.\n * @private\n * @return {Extent} Extent.\n */\nfunction _boundingExtentXYs(xs, ys, opt_extent) {\n var minX = Math.min.apply(null, xs);\n var minY = Math.min.apply(null, ys);\n var maxX = Math.max.apply(null, xs);\n var maxY = Math.max.apply(null, ys);\n return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n}\n\n\n/**\n * Return extent increased by the provided value.\n * @param {Extent} extent Extent.\n * @param {number} value The amount by which the extent should be buffered.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n * @api\n */\nexport function buffer(extent, value, opt_extent) {\n if (opt_extent) {\n opt_extent[0] = extent[0] - value;\n opt_extent[1] = extent[1] - value;\n opt_extent[2] = extent[2] + value;\n opt_extent[3] = extent[3] + value;\n return opt_extent;\n } else {\n return [\n extent[0] - value,\n extent[1] - value,\n extent[2] + value,\n extent[3] + value\n ];\n }\n}\n\n\n/**\n * Creates a clone of an extent.\n *\n * @param {Extent} extent Extent to clone.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} The clone.\n */\nexport function clone(extent, opt_extent) {\n if (opt_extent) {\n opt_extent[0] = extent[0];\n opt_extent[1] = extent[1];\n opt_extent[2] = extent[2];\n opt_extent[3] = extent[3];\n return opt_extent;\n } else {\n return extent.slice();\n }\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {number} Closest squared distance.\n */\nexport function closestSquaredDistanceXY(extent, x, y) {\n var dx, dy;\n if (x < extent[0]) {\n dx = extent[0] - x;\n } else if (extent[2] < x) {\n dx = x - extent[2];\n } else {\n dx = 0;\n }\n if (y < extent[1]) {\n dy = extent[1] - y;\n } else if (extent[3] < y) {\n dy = y - extent[3];\n } else {\n dy = 0;\n }\n return dx * dx + dy * dy;\n}\n\n\n/**\n * Check if the passed coordinate is contained or on the edge of the extent.\n *\n * @param {Extent} extent Extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @return {boolean} The coordinate is contained in the extent.\n * @api\n */\nexport function containsCoordinate(extent, coordinate) {\n return containsXY(extent, coordinate[0], coordinate[1]);\n}\n\n\n/**\n * Check if one extent contains another.\n *\n * An extent is deemed contained if it lies completely within the other extent,\n * including if they share one or more edges.\n *\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {boolean} The second extent is contained by or on the edge of the\n * first.\n * @api\n */\nexport function containsExtent(extent1, extent2) {\n return extent1[0] <= extent2[0] && extent2[2] <= extent1[2] &&\n extent1[1] <= extent2[1] && extent2[3] <= extent1[3];\n}\n\n\n/**\n * Check if the passed coordinate is contained or on the edge of the extent.\n *\n * @param {Extent} extent Extent.\n * @param {number} x X coordinate.\n * @param {number} y Y coordinate.\n * @return {boolean} The x, y values are contained in the extent.\n * @api\n */\nexport function containsXY(extent, x, y) {\n return extent[0] <= x && x <= extent[2] && extent[1] <= y && y <= extent[3];\n}\n\n\n/**\n * Get the relationship between a coordinate and extent.\n * @param {Extent} extent The extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate The coordinate.\n * @return {Relationship} The relationship (bitwise compare with\n * import(\"./extent/Relationship.js\").Relationship).\n */\nexport function coordinateRelationship(extent, coordinate) {\n var minX = extent[0];\n var minY = extent[1];\n var maxX = extent[2];\n var maxY = extent[3];\n var x = coordinate[0];\n var y = coordinate[1];\n var relationship = Relationship.UNKNOWN;\n if (x < minX) {\n relationship = relationship | Relationship.LEFT;\n } else if (x > maxX) {\n relationship = relationship | Relationship.RIGHT;\n }\n if (y < minY) {\n relationship = relationship | Relationship.BELOW;\n } else if (y > maxY) {\n relationship = relationship | Relationship.ABOVE;\n }\n if (relationship === Relationship.UNKNOWN) {\n relationship = Relationship.INTERSECTING;\n }\n return relationship;\n}\n\n\n/**\n * Create an empty extent.\n * @return {Extent} Empty extent.\n * @api\n */\nexport function createEmpty() {\n return [Infinity, Infinity, -Infinity, -Infinity];\n}\n\n\n/**\n * Create a new extent or update the provided extent.\n * @param {number} minX Minimum X.\n * @param {number} minY Minimum Y.\n * @param {number} maxX Maximum X.\n * @param {number} maxY Maximum Y.\n * @param {Extent=} opt_extent Destination extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdate(minX, minY, maxX, maxY, opt_extent) {\n if (opt_extent) {\n opt_extent[0] = minX;\n opt_extent[1] = minY;\n opt_extent[2] = maxX;\n opt_extent[3] = maxY;\n return opt_extent;\n } else {\n return [minX, minY, maxX, maxY];\n }\n}\n\n\n/**\n * Create a new empty extent or make the provided one empty.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateEmpty(opt_extent) {\n return createOrUpdate(\n Infinity, Infinity, -Infinity, -Infinity, opt_extent);\n}\n\n\n/**\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromCoordinate(coordinate, opt_extent) {\n var x = coordinate[0];\n var y = coordinate[1];\n return createOrUpdate(x, y, x, y, opt_extent);\n}\n\n\n/**\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromCoordinates(coordinates, opt_extent) {\n var extent = createOrUpdateEmpty(opt_extent);\n return extendCoordinates(extent, coordinates);\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromFlatCoordinates(flatCoordinates, offset, end, stride, opt_extent) {\n var extent = createOrUpdateEmpty(opt_extent);\n return extendFlatCoordinates(extent, flatCoordinates, offset, end, stride);\n}\n\n/**\n * @param {Array<Array<import(\"./coordinate.js\").Coordinate>>} rings Rings.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromRings(rings, opt_extent) {\n var extent = createOrUpdateEmpty(opt_extent);\n return extendRings(extent, rings);\n}\n\n\n/**\n * Determine if two extents are equivalent.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {boolean} The two extents are equivalent.\n * @api\n */\nexport function equals(extent1, extent2) {\n return extent1[0] == extent2[0] && extent1[2] == extent2[2] &&\n extent1[1] == extent2[1] && extent1[3] == extent2[3];\n}\n\n\n/**\n * Modify an extent to include another extent.\n * @param {Extent} extent1 The extent to be modified.\n * @param {Extent} extent2 The extent that will be included in the first.\n * @return {Extent} A reference to the first (extended) extent.\n * @api\n */\nexport function extend(extent1, extent2) {\n if (extent2[0] < extent1[0]) {\n extent1[0] = extent2[0];\n }\n if (extent2[2] > extent1[2]) {\n extent1[2] = extent2[2];\n }\n if (extent2[1] < extent1[1]) {\n extent1[1] = extent2[1];\n }\n if (extent2[3] > extent1[3]) {\n extent1[3] = extent2[3];\n }\n return extent1;\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n */\nexport function extendCoordinate(extent, coordinate) {\n if (coordinate[0] < extent[0]) {\n extent[0] = coordinate[0];\n }\n if (coordinate[0] > extent[2]) {\n extent[2] = coordinate[0];\n }\n if (coordinate[1] < extent[1]) {\n extent[1] = coordinate[1];\n }\n if (coordinate[1] > extent[3]) {\n extent[3] = coordinate[1];\n }\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @return {Extent} Extent.\n */\nexport function extendCoordinates(extent, coordinates) {\n for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n extendCoordinate(extent, coordinates[i]);\n }\n return extent;\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {Extent} Extent.\n */\nexport function extendFlatCoordinates(extent, flatCoordinates, offset, end, stride) {\n for (; offset < end; offset += stride) {\n extendXY(extent, flatCoordinates[offset], flatCoordinates[offset + 1]);\n }\n return extent;\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {Array<Array<import(\"./coordinate.js\").Coordinate>>} rings Rings.\n * @return {Extent} Extent.\n */\nexport function extendRings(extent, rings) {\n for (var i = 0, ii = rings.length; i < ii; ++i) {\n extendCoordinates(extent, rings[i]);\n }\n return extent;\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {number} x X.\n * @param {number} y Y.\n */\nexport function extendXY(extent, x, y) {\n extent[0] = Math.min(extent[0], x);\n extent[1] = Math.min(extent[1], y);\n extent[2] = Math.max(extent[2], x);\n extent[3] = Math.max(extent[3], y);\n}\n\n\n/**\n * This function calls `callback` for each corner of the extent. If the\n * callback returns a truthy value the function returns that value\n * immediately. Otherwise the function returns `false`.\n * @param {Extent} extent Extent.\n * @param {function(this:T, import(\"./coordinate.js\").Coordinate): S} callback Callback.\n * @param {T=} opt_this Value to use as `this` when executing `callback`.\n * @return {S|boolean} Value.\n * @template S, T\n */\nexport function forEachCorner(extent, callback, opt_this) {\n var val;\n val = callback.call(opt_this, getBottomLeft(extent));\n if (val) {\n return val;\n }\n val = callback.call(opt_this, getBottomRight(extent));\n if (val) {\n return val;\n }\n val = callback.call(opt_this, getTopRight(extent));\n if (val) {\n return val;\n }\n val = callback.call(opt_this, getTopLeft(extent));\n if (val) {\n return val;\n }\n return false;\n}\n\n\n/**\n * Get the size of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Area.\n * @api\n */\nexport function getArea(extent) {\n var area = 0;\n if (!isEmpty(extent)) {\n area = getWidth(extent) * getHeight(extent);\n }\n return area;\n}\n\n\n/**\n * Get the bottom left coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Bottom left coordinate.\n * @api\n */\nexport function getBottomLeft(extent) {\n return [extent[0], extent[1]];\n}\n\n\n/**\n * Get the bottom right coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Bottom right coordinate.\n * @api\n */\nexport function getBottomRight(extent) {\n return [extent[2], extent[1]];\n}\n\n\n/**\n * Get the center coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Center.\n * @api\n */\nexport function getCenter(extent) {\n return [(extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2];\n}\n\n\n/**\n * Get a corner coordinate of an extent.\n * @param {Extent} extent Extent.\n * @param {Corner} corner Corner.\n * @return {import(\"./coordinate.js\").Coordinate} Corner coordinate.\n */\nexport function getCorner(extent, corner) {\n var coordinate;\n if (corner === Corner.BOTTOM_LEFT) {\n coordinate = getBottomLeft(extent);\n } else if (corner === Corner.BOTTOM_RIGHT) {\n coordinate = getBottomRight(extent);\n } else if (corner === Corner.TOP_LEFT) {\n coordinate = getTopLeft(extent);\n } else if (corner === Corner.TOP_RIGHT) {\n coordinate = getTopRight(extent);\n } else {\n assert(false, 13); // Invalid corner\n }\n return coordinate;\n}\n\n\n/**\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {number} Enlarged area.\n */\nexport function getEnlargedArea(extent1, extent2) {\n var minX = Math.min(extent1[0], extent2[0]);\n var minY = Math.min(extent1[1], extent2[1]);\n var maxX = Math.max(extent1[2], extent2[2]);\n var maxY = Math.max(extent1[3], extent2[3]);\n return (maxX - minX) * (maxY - minY);\n}\n\n\n/**\n * @param {import(\"./coordinate.js\").Coordinate} center Center.\n * @param {number} resolution Resolution.\n * @param {number} rotation Rotation.\n * @param {import(\"./size.js\").Size} size Size.\n * @param {Extent=} opt_extent Destination extent.\n * @return {Extent} Extent.\n */\nexport function getForViewAndSize(center, resolution, rotation, size, opt_extent) {\n var dx = resolution * size[0] / 2;\n var dy = resolution * size[1] / 2;\n var cosRotation = Math.cos(rotation);\n var sinRotation = Math.sin(rotation);\n var xCos = dx * cosRotation;\n var xSin = dx * sinRotation;\n var yCos = dy * cosRotation;\n var ySin = dy * sinRotation;\n var x = center[0];\n var y = center[1];\n var x0 = x - xCos + ySin;\n var x1 = x - xCos - ySin;\n var x2 = x + xCos - ySin;\n var x3 = x + xCos + ySin;\n var y0 = y - xSin - yCos;\n var y1 = y - xSin + yCos;\n var y2 = y + xSin + yCos;\n var y3 = y + xSin - yCos;\n return createOrUpdate(\n Math.min(x0, x1, x2, x3), Math.min(y0, y1, y2, y3),\n Math.max(x0, x1, x2, x3), Math.max(y0, y1, y2, y3),\n opt_extent);\n}\n\n\n/**\n * Get the height of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Height.\n * @api\n */\nexport function getHeight(extent) {\n return extent[3] - extent[1];\n}\n\n\n/**\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {number} Intersection area.\n */\nexport function getIntersectionArea(extent1, extent2) {\n var intersection = getIntersection(extent1, extent2);\n return getArea(intersection);\n}\n\n\n/**\n * Get the intersection of two extents.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @param {Extent=} opt_extent Optional extent to populate with intersection.\n * @return {Extent} Intersecting extent.\n * @api\n */\nexport function getIntersection(extent1, extent2, opt_extent) {\n var intersection = opt_extent ? opt_extent : createEmpty();\n if (intersects(extent1, extent2)) {\n if (extent1[0] > extent2[0]) {\n intersection[0] = extent1[0];\n } else {\n intersection[0] = extent2[0];\n }\n if (extent1[1] > extent2[1]) {\n intersection[1] = extent1[1];\n } else {\n intersection[1] = extent2[1];\n }\n if (extent1[2] < extent2[2]) {\n intersection[2] = extent1[2];\n } else {\n intersection[2] = extent2[2];\n }\n if (extent1[3] < extent2[3]) {\n intersection[3] = extent1[3];\n } else {\n intersection[3] = extent2[3];\n }\n } else {\n createOrUpdateEmpty(intersection);\n }\n return intersection;\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @return {number} Margin.\n */\nexport function getMargin(extent) {\n return getWidth(extent) + getHeight(extent);\n}\n\n\n/**\n * Get the size (width, height) of an extent.\n * @param {Extent} extent The extent.\n * @return {import(\"./size.js\").Size} The extent size.\n * @api\n */\nexport function getSize(extent) {\n return [extent[2] - extent[0], extent[3] - extent[1]];\n}\n\n\n/**\n * Get the top left coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Top left coordinate.\n * @api\n */\nexport function getTopLeft(extent) {\n return [extent[0], extent[3]];\n}\n\n\n/**\n * Get the top right coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Top right coordinate.\n * @api\n */\nexport function getTopRight(extent) {\n return [extent[2], extent[3]];\n}\n\n\n/**\n * Get the width of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Width.\n * @api\n */\nexport function getWidth(extent) {\n return extent[2] - extent[0];\n}\n\n\n/**\n * Determine if one extent intersects another.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent.\n * @return {boolean} The two extents intersect.\n * @api\n */\nexport function intersects(extent1, extent2) {\n return extent1[0] <= extent2[2] &&\n extent1[2] >= extent2[0] &&\n extent1[1] <= extent2[3] &&\n extent1[3] >= extent2[1];\n}\n\n\n/**\n * Determine if an extent is empty.\n * @param {Extent} extent Extent.\n * @return {boolean} Is empty.\n * @api\n */\nexport function isEmpty(extent) {\n return extent[2] < extent[0] || extent[3] < extent[1];\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function returnOrUpdate(extent, opt_extent) {\n if (opt_extent) {\n opt_extent[0] = extent[0];\n opt_extent[1] = extent[1];\n opt_extent[2] = extent[2];\n opt_extent[3] = extent[3];\n return opt_extent;\n } else {\n return extent;\n }\n}\n\n\n/**\n * @param {Extent} extent Extent.\n * @param {number} value Value.\n */\nexport function scaleFromCenter(extent, value) {\n var deltaX = ((extent[2] - extent[0]) / 2) * (value - 1);\n var deltaY = ((extent[3] - extent[1]) / 2) * (value - 1);\n extent[0] -= deltaX;\n extent[2] += deltaX;\n extent[1] -= deltaY;\n extent[3] += deltaY;\n}\n\n\n/**\n * Determine if the segment between two coordinates intersects (crosses,\n * touches, or is contained by) the provided extent.\n * @param {Extent} extent The extent.\n * @param {import(\"./coordinate.js\").Coordinate} start Segment start coordinate.\n * @param {import(\"./coordinate.js\").Coordinate} end Segment end coordinate.\n * @return {boolean} The segment intersects the extent.\n */\nexport function intersectsSegment(extent, start, end) {\n var intersects = false;\n var startRel = coordinateRelationship(extent, start);\n var endRel = coordinateRelationship(extent, end);\n if (startRel === Relationship.INTERSECTING ||\n endRel === Relationship.INTERSECTING) {\n intersects = true;\n } else {\n var minX = extent[0];\n var minY = extent[1];\n var maxX = extent[2];\n var maxY = extent[3];\n var startX = start[0];\n var startY = start[1];\n var endX = end[0];\n var endY = end[1];\n var slope = (endY - startY) / (endX - startX);\n var x, y;\n if (!!(endRel & Relationship.ABOVE) &&\n !(startRel & Relationship.ABOVE)) {\n // potentially intersects top\n x = endX - ((endY - maxY) / slope);\n intersects = x >= minX && x <= maxX;\n }\n if (!intersects && !!(endRel & Relationship.RIGHT) &&\n !(startRel & Relationship.RIGHT)) {\n // potentially intersects right\n y = endY - ((endX - maxX) * slope);\n intersects = y >= minY && y <= maxY;\n }\n if (!intersects && !!(endRel & Relationship.BELOW) &&\n !(startRel & Relationship.BELOW)) {\n // potentially intersects bottom\n x = endX - ((endY - minY) / slope);\n intersects = x >= minX && x <= maxX;\n }\n if (!intersects && !!(endRel & Relationship.LEFT) &&\n !(startRel & Relationship.LEFT)) {\n // potentially intersects left\n y = endY - ((endX - minX) * slope);\n intersects = y >= minY && y <= maxY;\n }\n\n }\n return intersects;\n}\n\n\n/**\n * Apply a transform function to the extent.\n * @param {Extent} extent Extent.\n * @param {import(\"./proj.js\").TransformFunction} transformFn Transform function.\n * Called with `[minX, minY, maxX, maxY]` extent coordinates.\n * @param {Extent=} opt_extent Destination extent.\n * @return {Extent} Extent.\n * @api\n */\nexport function applyTransform(extent, transformFn, opt_extent) {\n var coordinates = [\n extent[0], extent[1],\n extent[0], extent[3],\n extent[2], extent[1],\n extent[2], extent[3]\n ];\n transformFn(coordinates, coordinates, 2);\n var xs = [coordinates[0], coordinates[2], coordinates[4], coordinates[6]];\n var ys = [coordinates[1], coordinates[3], coordinates[5], coordinates[7]];\n return _boundingExtentXYs(xs, ys, opt_extent);\n}\n\n//# sourceMappingURL=extent.js.map","/**\n * @module ol/geom/GeometryType\n */\n\n/**\n * The geometry type. One of `'Point'`, `'LineString'`, `'LinearRing'`,\n * `'Polygon'`, `'MultiPoint'`, `'MultiLineString'`, `'MultiPolygon'`,\n * `'GeometryCollection'`, `'Circle'`.\n * @enum {string}\n */\nexport default {\n POINT: 'Point',\n LINE_STRING: 'LineString',\n LINEAR_RING: 'LinearRing',\n POLYGON: 'Polygon',\n MULTI_POINT: 'MultiPoint',\n MULTI_LINE_STRING: 'MultiLineString',\n MULTI_POLYGON: 'MultiPolygon',\n GEOMETRY_COLLECTION: 'GeometryCollection',\n CIRCLE: 'Circle'\n};\n\n//# sourceMappingURL=GeometryType.js.map","/**\n * @module ol/geom/GeometryLayout\n */\n\n/**\n * The coordinate layout for geometries, indicating whether a 3rd or 4th z ('Z')\n * or measure ('M') coordinate is available. Supported values are `'XY'`,\n * `'XYZ'`, `'XYM'`, `'XYZM'`.\n * @enum {string}\n */\nexport default {\n XY: 'XY',\n XYZ: 'XYZ',\n XYM: 'XYM',\n XYZM: 'XYZM'\n};\n\n//# sourceMappingURL=GeometryLayout.js.map","/**\n * @module ol/geom/flat/transform\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function transform2D(flatCoordinates, offset, end, stride, transform, opt_dest) {\n var dest = opt_dest ? opt_dest : [];\n var i = 0;\n for (var j = offset; j < end; j += stride) {\n var x = flatCoordinates[j];\n var y = flatCoordinates[j + 1];\n dest[i++] = transform[0] * x + transform[2] * y + transform[4];\n dest[i++] = transform[1] * x + transform[3] * y + transform[5];\n }\n if (opt_dest && dest.length != i) {\n dest.length = i;\n }\n return dest;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} angle Angle.\n * @param {Array<number>} anchor Rotation anchor point.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function rotate(flatCoordinates, offset, end, stride, angle, anchor, opt_dest) {\n var dest = opt_dest ? opt_dest : [];\n var cos = Math.cos(angle);\n var sin = Math.sin(angle);\n var anchorX = anchor[0];\n var anchorY = anchor[1];\n var i = 0;\n for (var j = offset; j < end; j += stride) {\n var deltaX = flatCoordinates[j] - anchorX;\n var deltaY = flatCoordinates[j + 1] - anchorY;\n dest[i++] = anchorX + deltaX * cos - deltaY * sin;\n dest[i++] = anchorY + deltaX * sin + deltaY * cos;\n for (var k = j + 2; k < j + stride; ++k) {\n dest[i++] = flatCoordinates[k];\n }\n }\n if (opt_dest && dest.length != i) {\n dest.length = i;\n }\n return dest;\n}\n\n\n/**\n * Scale the coordinates.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} sx Scale factor in the x-direction.\n * @param {number} sy Scale factor in the y-direction.\n * @param {Array<number>} anchor Scale anchor point.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function scale(flatCoordinates, offset, end, stride, sx, sy, anchor, opt_dest) {\n var dest = opt_dest ? opt_dest : [];\n var anchorX = anchor[0];\n var anchorY = anchor[1];\n var i = 0;\n for (var j = offset; j < end; j += stride) {\n var deltaX = flatCoordinates[j] - anchorX;\n var deltaY = flatCoordinates[j + 1] - anchorY;\n dest[i++] = anchorX + sx * deltaX;\n dest[i++] = anchorY + sy * deltaY;\n for (var k = j + 2; k < j + stride; ++k) {\n dest[i++] = flatCoordinates[k];\n }\n }\n if (opt_dest && dest.length != i) {\n dest.length = i;\n }\n return dest;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} deltaX Delta X.\n * @param {number} deltaY Delta Y.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function translate(flatCoordinates, offset, end, stride, deltaX, deltaY, opt_dest) {\n var dest = opt_dest ? opt_dest : [];\n var i = 0;\n for (var j = offset; j < end; j += stride) {\n dest[i++] = flatCoordinates[j] + deltaX;\n dest[i++] = flatCoordinates[j + 1] + deltaY;\n for (var k = j + 2; k < j + stride; ++k) {\n dest[i++] = flatCoordinates[k];\n }\n }\n if (opt_dest && dest.length != i) {\n dest.length = i;\n }\n return dest;\n}\n\n//# sourceMappingURL=transform.js.map","/**\n * @license\n * Latitude/longitude spherical geodesy formulae taken from\n * http://www.movable-type.co.uk/scripts/latlong.html\n * Licensed under CC-BY-3.0.\n */\n\n/**\n * @module ol/sphere\n */\nimport {toRadians, toDegrees} from './math.js';\nimport GeometryType from './geom/GeometryType.js';\n\n\n/**\n * Object literal with options for the {@link getLength} or {@link getArea}\n * functions.\n * @typedef {Object} SphereMetricOptions\n * @property {import(\"./proj.js\").ProjectionLike} [projection='EPSG:3857']\n * Projection of the geometry. By default, the geometry is assumed to be in\n * Web Mercator.\n * @property {number} [radius=6371008.8] Sphere radius. By default, the radius of the\n * earth is used (Clarke 1866 Authalic Sphere).\n */\n\n\n/**\n * The mean Earth radius (1/3 * (2a + b)) for the WGS84 ellipsoid.\n * https://en.wikipedia.org/wiki/Earth_radius#Mean_radius\n * @type {number}\n */\nexport var DEFAULT_RADIUS = 6371008.8;\n\n\n/**\n * Get the great circle distance (in meters) between two geographic coordinates.\n * @param {Array} c1 Starting coordinate.\n * @param {Array} c2 Ending coordinate.\n * @param {number=} opt_radius The sphere radius to use. Defaults to the Earth's\n * mean radius using the WGS84 ellipsoid.\n * @return {number} The great circle distance between the points (in meters).\n * @api\n */\nexport function getDistance(c1, c2, opt_radius) {\n var radius = opt_radius || DEFAULT_RADIUS;\n var lat1 = toRadians(c1[1]);\n var lat2 = toRadians(c2[1]);\n var deltaLatBy2 = (lat2 - lat1) / 2;\n var deltaLonBy2 = toRadians(c2[0] - c1[0]) / 2;\n var a = Math.sin(deltaLatBy2) * Math.sin(deltaLatBy2) +\n Math.sin(deltaLonBy2) * Math.sin(deltaLonBy2) *\n Math.cos(lat1) * Math.cos(lat2);\n return 2 * radius * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));\n}\n\n\n/**\n * Get the cumulative great circle length of linestring coordinates (geographic).\n * @param {Array} coordinates Linestring coordinates.\n * @param {number} radius The sphere radius to use.\n * @return {number} The length (in meters).\n */\nfunction getLengthInternal(coordinates, radius) {\n var length = 0;\n for (var i = 0, ii = coordinates.length; i < ii - 1; ++i) {\n length += getDistance(coordinates[i], coordinates[i + 1], radius);\n }\n return length;\n}\n\n\n/**\n * Get the spherical length of a geometry. This length is the sum of the\n * great circle distances between coordinates. For polygons, the length is\n * the sum of all rings. For points, the length is zero. For multi-part\n * geometries, the length is the sum of the length of each part.\n * @param {import(\"./geom/Geometry.js\").default} geometry A geometry.\n * @param {SphereMetricOptions=} opt_options Options for the\n * length calculation. By default, geometries are assumed to be in 'EPSG:3857'.\n * You can change this by providing a `projection` option.\n * @return {number} The spherical length (in meters).\n * @api\n */\nexport function getLength(geometry, opt_options) {\n var options = opt_options || {};\n var radius = options.radius || DEFAULT_RADIUS;\n var projection = options.projection || 'EPSG:3857';\n var type = geometry.getType();\n if (type !== GeometryType.GEOMETRY_COLLECTION) {\n geometry = geometry.clone().transform(projection, 'EPSG:4326');\n }\n var length = 0;\n var coordinates, coords, i, ii, j, jj;\n switch (type) {\n case GeometryType.POINT:\n case GeometryType.MULTI_POINT: {\n break;\n }\n case GeometryType.LINE_STRING:\n case GeometryType.LINEAR_RING: {\n coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n length = getLengthInternal(coordinates, radius);\n break;\n }\n case GeometryType.MULTI_LINE_STRING:\n case GeometryType.POLYGON: {\n coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n for (i = 0, ii = coordinates.length; i < ii; ++i) {\n length += getLengthInternal(coordinates[i], radius);\n }\n break;\n }\n case GeometryType.MULTI_POLYGON: {\n coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n for (i = 0, ii = coordinates.length; i < ii; ++i) {\n coords = coordinates[i];\n for (j = 0, jj = coords.length; j < jj; ++j) {\n length += getLengthInternal(coords[j], radius);\n }\n }\n break;\n }\n case GeometryType.GEOMETRY_COLLECTION: {\n var geometries = /** @type {import(\"./geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n for (i = 0, ii = geometries.length; i < ii; ++i) {\n length += getLength(geometries[i], opt_options);\n }\n break;\n }\n default: {\n throw new Error('Unsupported geometry type: ' + type);\n }\n }\n return length;\n}\n\n\n/**\n * Returns the spherical area for a list of coordinates.\n *\n * [Reference](https://trs-new.jpl.nasa.gov/handle/2014/40409)\n * Robert. G. Chamberlain and William H. Duquette, \"Some Algorithms for\n * Polygons on a Sphere\", JPL Publication 07-03, Jet Propulsion\n * Laboratory, Pasadena, CA, June 2007\n *\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates List of coordinates of a linear\n * ring. If the ring is oriented clockwise, the area will be positive,\n * otherwise it will be negative.\n * @param {number} radius The sphere radius.\n * @return {number} Area (in square meters).\n */\nfunction getAreaInternal(coordinates, radius) {\n var area = 0;\n var len = coordinates.length;\n var x1 = coordinates[len - 1][0];\n var y1 = coordinates[len - 1][1];\n for (var i = 0; i < len; i++) {\n var x2 = coordinates[i][0];\n var y2 = coordinates[i][1];\n area += toRadians(x2 - x1) *\n (2 + Math.sin(toRadians(y1)) +\n Math.sin(toRadians(y2)));\n x1 = x2;\n y1 = y2;\n }\n return area * radius * radius / 2.0;\n}\n\n\n/**\n * Get the spherical area of a geometry. This is the area (in meters) assuming\n * that polygon edges are segments of great circles on a sphere.\n * @param {import(\"./geom/Geometry.js\").default} geometry A geometry.\n * @param {SphereMetricOptions=} opt_options Options for the area\n * calculation. By default, geometries are assumed to be in 'EPSG:3857'.\n * You can change this by providing a `projection` option.\n * @return {number} The spherical area (in square meters).\n * @api\n */\nexport function getArea(geometry, opt_options) {\n var options = opt_options || {};\n var radius = options.radius || DEFAULT_RADIUS;\n var projection = options.projection || 'EPSG:3857';\n var type = geometry.getType();\n if (type !== GeometryType.GEOMETRY_COLLECTION) {\n geometry = geometry.clone().transform(projection, 'EPSG:4326');\n }\n var area = 0;\n var coordinates, coords, i, ii, j, jj;\n switch (type) {\n case GeometryType.POINT:\n case GeometryType.MULTI_POINT:\n case GeometryType.LINE_STRING:\n case GeometryType.MULTI_LINE_STRING:\n case GeometryType.LINEAR_RING: {\n break;\n }\n case GeometryType.POLYGON: {\n coordinates = /** @type {import(\"./geom/Polygon.js\").default} */ (geometry).getCoordinates();\n area = Math.abs(getAreaInternal(coordinates[0], radius));\n for (i = 1, ii = coordinates.length; i < ii; ++i) {\n area -= Math.abs(getAreaInternal(coordinates[i], radius));\n }\n break;\n }\n case GeometryType.MULTI_POLYGON: {\n coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n for (i = 0, ii = coordinates.length; i < ii; ++i) {\n coords = coordinates[i];\n area += Math.abs(getAreaInternal(coords[0], radius));\n for (j = 1, jj = coords.length; j < jj; ++j) {\n area -= Math.abs(getAreaInternal(coords[j], radius));\n }\n }\n break;\n }\n case GeometryType.GEOMETRY_COLLECTION: {\n var geometries = /** @type {import(\"./geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n for (i = 0, ii = geometries.length; i < ii; ++i) {\n area += getArea(geometries[i], opt_options);\n }\n break;\n }\n default: {\n throw new Error('Unsupported geometry type: ' + type);\n }\n }\n return area;\n}\n\n\n/**\n * Returns the coordinate at the given distance and bearing from `c1`.\n *\n * @param {import(\"./coordinate.js\").Coordinate} c1 The origin point (`[lon, lat]` in degrees).\n * @param {number} distance The great-circle distance between the origin\n * point and the target point.\n * @param {number} bearing The bearing (in radians).\n * @param {number=} opt_radius The sphere radius to use. Defaults to the Earth's\n * mean radius using the WGS84 ellipsoid.\n * @return {import(\"./coordinate.js\").Coordinate} The target point.\n */\nexport function offset(c1, distance, bearing, opt_radius) {\n var radius = opt_radius || DEFAULT_RADIUS;\n var lat1 = toRadians(c1[1]);\n var lon1 = toRadians(c1[0]);\n var dByR = distance / radius;\n var lat = Math.asin(\n Math.sin(lat1) * Math.cos(dByR) +\n Math.cos(lat1) * Math.sin(dByR) * Math.cos(bearing));\n var lon = lon1 + Math.atan2(\n Math.sin(bearing) * Math.sin(dByR) * Math.cos(lat1),\n Math.cos(dByR) - Math.sin(lat1) * Math.sin(lat));\n return [toDegrees(lon), toDegrees(lat)];\n}\n\n//# sourceMappingURL=sphere.js.map","/**\n * @module ol/proj/Units\n */\n\n/**\n * Projection units: `'degrees'`, `'ft'`, `'m'`, `'pixels'`, `'tile-pixels'` or\n * `'us-ft'`.\n * @enum {string}\n */\nvar Units = {\n DEGREES: 'degrees',\n FEET: 'ft',\n METERS: 'm',\n PIXELS: 'pixels',\n TILE_PIXELS: 'tile-pixels',\n USFEET: 'us-ft'\n};\n\n\n/**\n * Meters per unit lookup table.\n * @const\n * @type {Object<Units, number>}\n * @api\n */\nexport var METERS_PER_UNIT = {};\n// use the radius of the Normal sphere\nMETERS_PER_UNIT[Units.DEGREES] = 2 * Math.PI * 6370997 / 360;\nMETERS_PER_UNIT[Units.FEET] = 0.3048;\nMETERS_PER_UNIT[Units.METERS] = 1;\nMETERS_PER_UNIT[Units.USFEET] = 1200 / 3937;\n\nexport default Units;\n\n//# sourceMappingURL=Units.js.map","/**\n * @module ol/proj/Projection\n */\nimport {METERS_PER_UNIT} from './Units.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {string} code The SRS identifier code, e.g. `EPSG:4326`.\n * @property {import(\"./Units.js\").default|string} [units] Units. Required unless a\n * proj4 projection is defined for `code`.\n * @property {import(\"../extent.js\").Extent} [extent] The validity extent for the SRS.\n * @property {string} [axisOrientation='enu'] The axis orientation as specified in Proj4.\n * @property {boolean} [global=false] Whether the projection is valid for the whole globe.\n * @property {number} [metersPerUnit] The meters per unit for the SRS.\n * If not provided, the `units` are used to get the meters per unit from the {@link module:ol/proj/Units~METERS_PER_UNIT}\n * lookup table.\n * @property {import(\"../extent.js\").Extent} [worldExtent] The world extent for the SRS.\n * @property {function(number, import(\"../coordinate.js\").Coordinate):number} [getPointResolution]\n * Function to determine resolution at a point. The function is called with a\n * `{number}` view resolution and an `{import(\"../coordinate.js\").Coordinate}` as arguments, and returns\n * the `{number}` resolution at the passed coordinate. If this is `undefined`,\n * the default {@link module:ol/proj#getPointResolution} function will be used.\n */\n\n\n/**\n * @classdesc\n * Projection definition class. One of these is created for each projection\n * supported in the application and stored in the {@link module:ol/proj} namespace.\n * You can use these in applications, but this is not required, as API params\n * and options use {@link module:ol/proj~ProjectionLike} which means the simple string\n * code will suffice.\n *\n * You can use {@link module:ol/proj~get} to retrieve the object for a particular\n * projection.\n *\n * The library includes definitions for `EPSG:4326` and `EPSG:3857`, together\n * with the following aliases:\n * * `EPSG:4326`: CRS:84, urn:ogc:def:crs:EPSG:6.6:4326,\n * urn:ogc:def:crs:OGC:1.3:CRS84, urn:ogc:def:crs:OGC:2:84,\n * http://www.opengis.net/gml/srs/epsg.xml#4326,\n * urn:x-ogc:def:crs:EPSG:4326\n * * `EPSG:3857`: EPSG:102100, EPSG:102113, EPSG:900913,\n * urn:ogc:def:crs:EPSG:6.18:3:3857,\n * http://www.opengis.net/gml/srs/epsg.xml#3857\n *\n * If you use [proj4js](https://github.com/proj4js/proj4js), aliases can\n * be added using `proj4.defs()`. After all required projection definitions are\n * added, call the {@link module:ol/proj/proj4~register} function.\n *\n * @api\n */\nvar Projection = function Projection(options) {\n /**\n * @private\n * @type {string}\n */\n this.code_ = options.code;\n\n /**\n * Units of projected coordinates. When set to `TILE_PIXELS`, a\n * `this.extent_` and `this.worldExtent_` must be configured properly for each\n * tile.\n * @private\n * @type {import(\"./Units.js\").default}\n */\n this.units_ = /** @type {import(\"./Units.js\").default} */ (options.units);\n\n /**\n * Validity extent of the projection in projected coordinates. For projections\n * with `TILE_PIXELS` units, this is the extent of the tile in\n * tile pixel space.\n * @private\n * @type {import(\"../extent.js\").Extent}\n */\n this.extent_ = options.extent !== undefined ? options.extent : null;\n\n /**\n * Extent of the world in EPSG:4326. For projections with\n * `TILE_PIXELS` units, this is the extent of the tile in\n * projected coordinate space.\n * @private\n * @type {import(\"../extent.js\").Extent}\n */\n this.worldExtent_ = options.worldExtent !== undefined ?\n options.worldExtent : null;\n\n /**\n * @private\n * @type {string}\n */\n this.axisOrientation_ = options.axisOrientation !== undefined ?\n options.axisOrientation : 'enu';\n\n /**\n * @private\n * @type {boolean}\n */\n this.global_ = options.global !== undefined ? options.global : false;\n\n /**\n * @private\n * @type {boolean}\n */\n this.canWrapX_ = !!(this.global_ && this.extent_);\n\n /**\n * @private\n * @type {function(number, import(\"../coordinate.js\").Coordinate):number|undefined}\n */\n this.getPointResolutionFunc_ = options.getPointResolution;\n\n /**\n * @private\n * @type {import(\"../tilegrid/TileGrid.js\").default}\n */\n this.defaultTileGrid_ = null;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.metersPerUnit_ = options.metersPerUnit;\n};\n\n/**\n * @return {boolean} The projection is suitable for wrapping the x-axis\n */\nProjection.prototype.canWrapX = function canWrapX () {\n return this.canWrapX_;\n};\n\n/**\n * Get the code for this projection, e.g. 'EPSG:4326'.\n * @return {string} Code.\n * @api\n */\nProjection.prototype.getCode = function getCode () {\n return this.code_;\n};\n\n/**\n * Get the validity extent for this projection.\n * @return {import(\"../extent.js\").Extent} Extent.\n * @api\n */\nProjection.prototype.getExtent = function getExtent () {\n return this.extent_;\n};\n\n/**\n * Get the units of this projection.\n * @return {import(\"./Units.js\").default} Units.\n * @api\n */\nProjection.prototype.getUnits = function getUnits () {\n return this.units_;\n};\n\n/**\n * Get the amount of meters per unit of this projection.If the projection is\n * not configured with `metersPerUnit` or a units identifier, the return is\n * `undefined`.\n * @return {number|undefined} Meters.\n * @api\n */\nProjection.prototype.getMetersPerUnit = function getMetersPerUnit () {\n return this.metersPerUnit_ || METERS_PER_UNIT[this.units_];\n};\n\n/**\n * Get the world extent for this projection.\n * @return {import(\"../extent.js\").Extent} Extent.\n * @api\n */\nProjection.prototype.getWorldExtent = function getWorldExtent () {\n return this.worldExtent_;\n};\n\n/**\n * Get the axis orientation of this projection.\n * Example values are:\n * enu - the default easting, northing, elevation.\n * neu - northing, easting, up - useful for \"lat/long\" geographic coordinates,\n * or south orientated transverse mercator.\n * wnu - westing, northing, up - some planetary coordinate systems have\n * \"west positive\" coordinate systems\n * @return {string} Axis orientation.\n * @api\n */\nProjection.prototype.getAxisOrientation = function getAxisOrientation () {\n return this.axisOrientation_;\n};\n\n/**\n * Is this projection a global projection which spans the whole world?\n * @return {boolean} Whether the projection is global.\n * @api\n */\nProjection.prototype.isGlobal = function isGlobal () {\n return this.global_;\n};\n\n/**\n * Set if the projection is a global projection which spans the whole world\n * @param {boolean} global Whether the projection is global.\n * @api\n */\nProjection.prototype.setGlobal = function setGlobal (global) {\n this.global_ = global;\n this.canWrapX_ = !!(global && this.extent_);\n};\n\n/**\n * @return {import(\"../tilegrid/TileGrid.js\").default} The default tile grid.\n */\nProjection.prototype.getDefaultTileGrid = function getDefaultTileGrid () {\n return this.defaultTileGrid_;\n};\n\n/**\n * @param {import(\"../tilegrid/TileGrid.js\").default} tileGrid The default tile grid.\n */\nProjection.prototype.setDefaultTileGrid = function setDefaultTileGrid (tileGrid) {\n this.defaultTileGrid_ = tileGrid;\n};\n\n/**\n * Set the validity extent for this projection.\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @api\n */\nProjection.prototype.setExtent = function setExtent (extent) {\n this.extent_ = extent;\n this.canWrapX_ = !!(this.global_ && extent);\n};\n\n/**\n * Set the world extent for this projection.\n * @param {import(\"../extent.js\").Extent} worldExtent World extent\n * [minlon, minlat, maxlon, maxlat].\n * @api\n */\nProjection.prototype.setWorldExtent = function setWorldExtent (worldExtent) {\n this.worldExtent_ = worldExtent;\n};\n\n/**\n * Set the getPointResolution function (see {@link module:ol/proj~getPointResolution}\n * for this projection.\n * @param {function(number, import(\"../coordinate.js\").Coordinate):number} func Function\n * @api\n */\nProjection.prototype.setGetPointResolution = function setGetPointResolution (func) {\n this.getPointResolutionFunc_ = func;\n};\n\n/**\n * Get the custom point resolution function for this projection (if set).\n * @return {function(number, import(\"../coordinate.js\").Coordinate):number|undefined} The custom point\n * resolution function (if set).\n */\nProjection.prototype.getPointResolutionFunc = function getPointResolutionFunc () {\n return this.getPointResolutionFunc_;\n};\n\nexport default Projection;\n\n//# sourceMappingURL=Projection.js.map","/**\n * @module ol/proj/epsg3857\n */\nimport {cosh} from '../math.js';\nimport Projection from './Projection.js';\nimport Units from './Units.js';\n\n\n/**\n * Radius of WGS84 sphere\n *\n * @const\n * @type {number}\n */\nexport var RADIUS = 6378137;\n\n\n/**\n * @const\n * @type {number}\n */\nexport var HALF_SIZE = Math.PI * RADIUS;\n\n\n/**\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var EXTENT = [\n -HALF_SIZE, -HALF_SIZE,\n HALF_SIZE, HALF_SIZE\n];\n\n\n/**\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var WORLD_EXTENT = [-180, -85, 180, 85];\n\n\n/**\n * @classdesc\n * Projection object for web/spherical Mercator (EPSG:3857).\n */\nvar EPSG3857Projection = /*@__PURE__*/(function (Projection) {\n function EPSG3857Projection(code) {\n Projection.call(this, {\n code: code,\n units: Units.METERS,\n extent: EXTENT,\n global: true,\n worldExtent: WORLD_EXTENT,\n getPointResolution: function(resolution, point) {\n return resolution / cosh(point[1] / RADIUS);\n }\n });\n\n }\n\n if ( Projection ) EPSG3857Projection.__proto__ = Projection;\n EPSG3857Projection.prototype = Object.create( Projection && Projection.prototype );\n EPSG3857Projection.prototype.constructor = EPSG3857Projection;\n\n return EPSG3857Projection;\n}(Projection));\n\n\n/**\n * Projections equal to EPSG:3857.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n new EPSG3857Projection('EPSG:3857'),\n new EPSG3857Projection('EPSG:102100'),\n new EPSG3857Projection('EPSG:102113'),\n new EPSG3857Projection('EPSG:900913'),\n new EPSG3857Projection('urn:ogc:def:crs:EPSG:6.18:3:3857'),\n new EPSG3857Projection('urn:ogc:def:crs:EPSG::3857'),\n new EPSG3857Projection('http://www.opengis.net/gml/srs/epsg.xml#3857')\n];\n\n\n/**\n * Transformation from EPSG:4326 to EPSG:3857.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function fromEPSG4326(input, opt_output, opt_dimension) {\n var length = input.length;\n var dimension = opt_dimension > 1 ? opt_dimension : 2;\n var output = opt_output;\n if (output === undefined) {\n if (dimension > 2) {\n // preserve values beyond second dimension\n output = input.slice();\n } else {\n output = new Array(length);\n }\n }\n var halfSize = HALF_SIZE;\n for (var i = 0; i < length; i += dimension) {\n output[i] = halfSize * input[i] / 180;\n var y = RADIUS *\n Math.log(Math.tan(Math.PI * (input[i + 1] + 90) / 360));\n if (y > halfSize) {\n y = halfSize;\n } else if (y < -halfSize) {\n y = -halfSize;\n }\n output[i + 1] = y;\n }\n return output;\n}\n\n\n/**\n * Transformation from EPSG:3857 to EPSG:4326.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function toEPSG4326(input, opt_output, opt_dimension) {\n var length = input.length;\n var dimension = opt_dimension > 1 ? opt_dimension : 2;\n var output = opt_output;\n if (output === undefined) {\n if (dimension > 2) {\n // preserve values beyond second dimension\n output = input.slice();\n } else {\n output = new Array(length);\n }\n }\n for (var i = 0; i < length; i += dimension) {\n output[i] = 180 * input[i] / HALF_SIZE;\n output[i + 1] = 360 * Math.atan(\n Math.exp(input[i + 1] / RADIUS)) / Math.PI - 90;\n }\n return output;\n}\n\n//# sourceMappingURL=epsg3857.js.map","/**\n * @module ol/proj/epsg4326\n */\nimport Projection from './Projection.js';\nimport Units from './Units.js';\n\n\n/**\n * Semi-major radius of the WGS84 ellipsoid.\n *\n * @const\n * @type {number}\n */\nexport var RADIUS = 6378137;\n\n\n/**\n * Extent of the EPSG:4326 projection which is the whole world.\n *\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var EXTENT = [-180, -90, 180, 90];\n\n\n/**\n * @const\n * @type {number}\n */\nexport var METERS_PER_UNIT = Math.PI * RADIUS / 180;\n\n\n/**\n * @classdesc\n * Projection object for WGS84 geographic coordinates (EPSG:4326).\n *\n * Note that OpenLayers does not strictly comply with the EPSG definition.\n * The EPSG registry defines 4326 as a CRS for Latitude,Longitude (y,x).\n * OpenLayers treats EPSG:4326 as a pseudo-projection, with x,y coordinates.\n */\nvar EPSG4326Projection = /*@__PURE__*/(function (Projection) {\n function EPSG4326Projection(code, opt_axisOrientation) {\n Projection.call(this, {\n code: code,\n units: Units.DEGREES,\n extent: EXTENT,\n axisOrientation: opt_axisOrientation,\n global: true,\n metersPerUnit: METERS_PER_UNIT,\n worldExtent: EXTENT\n });\n\n }\n\n if ( Projection ) EPSG4326Projection.__proto__ = Projection;\n EPSG4326Projection.prototype = Object.create( Projection && Projection.prototype );\n EPSG4326Projection.prototype.constructor = EPSG4326Projection;\n\n return EPSG4326Projection;\n}(Projection));\n\n\n/**\n * Projections equal to EPSG:4326.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n new EPSG4326Projection('CRS:84'),\n new EPSG4326Projection('EPSG:4326', 'neu'),\n new EPSG4326Projection('urn:ogc:def:crs:EPSG::4326', 'neu'),\n new EPSG4326Projection('urn:ogc:def:crs:EPSG:6.6:4326', 'neu'),\n new EPSG4326Projection('urn:ogc:def:crs:OGC:1.3:CRS84'),\n new EPSG4326Projection('urn:ogc:def:crs:OGC:2:84'),\n new EPSG4326Projection('http://www.opengis.net/gml/srs/epsg.xml#4326', 'neu'),\n new EPSG4326Projection('urn:x-ogc:def:crs:EPSG:4326', 'neu')\n];\n\n//# sourceMappingURL=epsg4326.js.map","/**\n * @module ol/proj/projections\n */\n\n\n/**\n * @type {Object<string, import(\"./Projection.js\").default>}\n */\nvar cache = {};\n\n\n/**\n * Clear the projections cache.\n */\nexport function clear() {\n cache = {};\n}\n\n\n/**\n * Get a cached projection by code.\n * @param {string} code The code for the projection.\n * @return {import(\"./Projection.js\").default} The projection (if cached).\n */\nexport function get(code) {\n return cache[code] || null;\n}\n\n\n/**\n * Add a projection to the cache.\n * @param {string} code The projection code.\n * @param {import(\"./Projection.js\").default} projection The projection to cache.\n */\nexport function add(code, projection) {\n cache[code] = projection;\n}\n\n//# sourceMappingURL=projections.js.map","/**\n * @module ol/proj/transforms\n */\nimport {isEmpty} from '../obj.js';\n\n\n/**\n * @private\n * @type {!Object<string, Object<string, import(\"../proj.js\").TransformFunction>>}\n */\nvar transforms = {};\n\n\n/**\n * Clear the transform cache.\n */\nexport function clear() {\n transforms = {};\n}\n\n\n/**\n * Registers a conversion function to convert coordinates from the source\n * projection to the destination projection.\n *\n * @param {import(\"./Projection.js\").default} source Source.\n * @param {import(\"./Projection.js\").default} destination Destination.\n * @param {import(\"../proj.js\").TransformFunction} transformFn Transform.\n */\nexport function add(source, destination, transformFn) {\n var sourceCode = source.getCode();\n var destinationCode = destination.getCode();\n if (!(sourceCode in transforms)) {\n transforms[sourceCode] = {};\n }\n transforms[sourceCode][destinationCode] = transformFn;\n}\n\n\n/**\n * Unregisters the conversion function to convert coordinates from the source\n * projection to the destination projection. This method is used to clean up\n * cached transforms during testing.\n *\n * @param {import(\"./Projection.js\").default} source Source projection.\n * @param {import(\"./Projection.js\").default} destination Destination projection.\n * @return {import(\"../proj.js\").TransformFunction} transformFn The unregistered transform.\n */\nexport function remove(source, destination) {\n var sourceCode = source.getCode();\n var destinationCode = destination.getCode();\n var transform = transforms[sourceCode][destinationCode];\n delete transforms[sourceCode][destinationCode];\n if (isEmpty(transforms[sourceCode])) {\n delete transforms[sourceCode];\n }\n return transform;\n}\n\n\n/**\n * Get a transform given a source code and a destination code.\n * @param {string} sourceCode The code for the source projection.\n * @param {string} destinationCode The code for the destination projection.\n * @return {import(\"../proj.js\").TransformFunction|undefined} The transform function (if found).\n */\nexport function get(sourceCode, destinationCode) {\n var transform;\n if (sourceCode in transforms && destinationCode in transforms[sourceCode]) {\n transform = transforms[sourceCode][destinationCode];\n }\n return transform;\n}\n\n//# sourceMappingURL=transforms.js.map","/**\n * @module ol/proj\n */\n\n/**\n * The ol/proj module stores:\n * * a list of {@link module:ol/proj/Projection}\n * objects, one for each projection supported by the application\n * * a list of transform functions needed to convert coordinates in one projection\n * into another.\n *\n * The static functions are the methods used to maintain these.\n * Each transform function can handle not only simple coordinate pairs, but also\n * large arrays of coordinates such as vector geometries.\n *\n * When loaded, the library adds projection objects for EPSG:4326 (WGS84\n * geographic coordinates) and EPSG:3857 (Web or Spherical Mercator, as used\n * for example by Bing Maps or OpenStreetMap), together with the relevant\n * transform functions.\n *\n * Additional transforms may be added by using the http://proj4js.org/\n * library (version 2.2 or later). You can use the full build supplied by\n * Proj4js, or create a custom build to support those projections you need; see\n * the Proj4js website for how to do this. You also need the Proj4js definitions\n * for the required projections. These definitions can be obtained from\n * https://epsg.io/, and are a JS function, so can be loaded in a script\n * tag (as in the examples) or pasted into your application.\n *\n * After all required projection definitions are added to proj4's registry (by\n * using `proj4.defs()`), simply call `register(proj4)` from the `ol/proj/proj4`\n * package. Existing transforms are not changed by this function. See\n * examples/wms-image-custom-proj for an example of this.\n *\n * Additional projection definitions can be registered with `proj4.defs()` any\n * time. Just make sure to call `register(proj4)` again; for example, with user-supplied data where you don't\n * know in advance what projections are needed, you can initially load minimal\n * support and then load whichever are requested.\n *\n * Note that Proj4js does not support projection extents. If you want to add\n * one for creating default tile grids, you can add it after the Projection\n * object has been created with `setExtent`, for example,\n * `get('EPSG:1234').setExtent(extent)`.\n *\n * In addition to Proj4js support, any transform functions can be added with\n * {@link module:ol/proj~addCoordinateTransforms}. To use this, you must first create\n * a {@link module:ol/proj/Projection} object for the new projection and add it with\n * {@link module:ol/proj~addProjection}. You can then add the forward and inverse\n * functions with {@link module:ol/proj~addCoordinateTransforms}. See\n * examples/wms-custom-proj for an example of this.\n *\n * Note that if no transforms are needed and you only need to define the\n * projection, just add a {@link module:ol/proj/Projection} with\n * {@link module:ol/proj~addProjection}. See examples/wms-no-proj for an example of\n * this.\n */\nimport {getDistance} from './sphere.js';\nimport {applyTransform} from './extent.js';\nimport {modulo} from './math.js';\nimport {toEPSG4326, fromEPSG4326, PROJECTIONS as EPSG3857_PROJECTIONS} from './proj/epsg3857.js';\nimport {PROJECTIONS as EPSG4326_PROJECTIONS} from './proj/epsg4326.js';\nimport Projection from './proj/Projection.js';\nimport Units, {METERS_PER_UNIT} from './proj/Units.js';\nimport * as projections from './proj/projections.js';\nimport {add as addTransformFunc, clear as clearTransformFuncs, get as getTransformFunc} from './proj/transforms.js';\n\n\n/**\n * A projection as {@link module:ol/proj/Projection}, SRS identifier\n * string or undefined.\n * @typedef {Projection|string|undefined} ProjectionLike\n * @api\n */\n\n\n/**\n * A transform function accepts an array of input coordinate values, an optional\n * output array, and an optional dimension (default should be 2). The function\n * transforms the input coordinate values, populates the output array, and\n * returns the output array.\n *\n * @typedef {function(Array<number>, Array<number>=, number=): Array<number>} TransformFunction\n * @api\n */\n\n\nexport {METERS_PER_UNIT};\n\nexport {Projection};\n\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array<number>} Output coordinate array (new array, same coordinate\n * values).\n */\nexport function cloneTransform(input, opt_output, opt_dimension) {\n var output;\n if (opt_output !== undefined) {\n for (var i = 0, ii = input.length; i < ii; ++i) {\n opt_output[i] = input[i];\n }\n output = opt_output;\n } else {\n output = input.slice();\n }\n return output;\n}\n\n\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array<number>} Input coordinate array (same array as input).\n */\nexport function identityTransform(input, opt_output, opt_dimension) {\n if (opt_output !== undefined && input !== opt_output) {\n for (var i = 0, ii = input.length; i < ii; ++i) {\n opt_output[i] = input[i];\n }\n input = opt_output;\n }\n return input;\n}\n\n\n/**\n * Add a Projection object to the list of supported projections that can be\n * looked up by their code.\n *\n * @param {Projection} projection Projection instance.\n * @api\n */\nexport function addProjection(projection) {\n projections.add(projection.getCode(), projection);\n addTransformFunc(projection, projection, cloneTransform);\n}\n\n\n/**\n * @param {Array<Projection>} projections Projections.\n */\nexport function addProjections(projections) {\n projections.forEach(addProjection);\n}\n\n\n/**\n * Fetches a Projection object for the code specified.\n *\n * @param {ProjectionLike} projectionLike Either a code string which is\n * a combination of authority and identifier such as \"EPSG:4326\", or an\n * existing projection object, or undefined.\n * @return {Projection} Projection object, or null if not in list.\n * @api\n */\nexport function get(projectionLike) {\n return typeof projectionLike === 'string' ?\n projections.get(/** @type {string} */ (projectionLike)) :\n (/** @type {Projection} */ (projectionLike) || null);\n}\n\n\n/**\n * Get the resolution of the point in degrees or distance units.\n * For projections with degrees as the unit this will simply return the\n * provided resolution. For other projections the point resolution is\n * by default estimated by transforming the 'point' pixel to EPSG:4326,\n * measuring its width and height on the normal sphere,\n * and taking the average of the width and height.\n * A custom function can be provided for a specific projection, either\n * by setting the `getPointResolution` option in the\n * {@link module:ol/proj/Projection~Projection} constructor or by using\n * {@link module:ol/proj/Projection~Projection#setGetPointResolution} to change an existing\n * projection object.\n * @param {ProjectionLike} projection The projection.\n * @param {number} resolution Nominal resolution in projection units.\n * @param {import(\"./coordinate.js\").Coordinate} point Point to find adjusted resolution at.\n * @param {Units=} opt_units Units to get the point resolution in.\n * Default is the projection's units.\n * @return {number} Point resolution.\n * @api\n */\nexport function getPointResolution(projection, resolution, point, opt_units) {\n projection = get(projection);\n var pointResolution;\n var getter = projection.getPointResolutionFunc();\n if (getter) {\n pointResolution = getter(resolution, point);\n } else {\n var units = projection.getUnits();\n if (units == Units.DEGREES && !opt_units || opt_units == Units.DEGREES) {\n pointResolution = resolution;\n } else {\n // Estimate point resolution by transforming the center pixel to EPSG:4326,\n // measuring its width and height on the normal sphere, and taking the\n // average of the width and height.\n var toEPSG4326 = getTransformFromProjections(projection, get('EPSG:4326'));\n var vertices = [\n point[0] - resolution / 2, point[1],\n point[0] + resolution / 2, point[1],\n point[0], point[1] - resolution / 2,\n point[0], point[1] + resolution / 2\n ];\n vertices = toEPSG4326(vertices, vertices, 2);\n var width = getDistance(vertices.slice(0, 2), vertices.slice(2, 4));\n var height = getDistance(vertices.slice(4, 6), vertices.slice(6, 8));\n pointResolution = (width + height) / 2;\n var metersPerUnit = opt_units ?\n METERS_PER_UNIT[opt_units] :\n projection.getMetersPerUnit();\n if (metersPerUnit !== undefined) {\n pointResolution /= metersPerUnit;\n }\n }\n }\n return pointResolution;\n}\n\n\n/**\n * Registers transformation functions that don't alter coordinates. Those allow\n * to transform between projections with equal meaning.\n *\n * @param {Array<Projection>} projections Projections.\n * @api\n */\nexport function addEquivalentProjections(projections) {\n addProjections(projections);\n projections.forEach(function(source) {\n projections.forEach(function(destination) {\n if (source !== destination) {\n addTransformFunc(source, destination, cloneTransform);\n }\n });\n });\n}\n\n\n/**\n * Registers transformation functions to convert coordinates in any projection\n * in projection1 to any projection in projection2.\n *\n * @param {Array<Projection>} projections1 Projections with equal\n * meaning.\n * @param {Array<Projection>} projections2 Projections with equal\n * meaning.\n * @param {TransformFunction} forwardTransform Transformation from any\n * projection in projection1 to any projection in projection2.\n * @param {TransformFunction} inverseTransform Transform from any projection\n * in projection2 to any projection in projection1..\n */\nexport function addEquivalentTransforms(projections1, projections2, forwardTransform, inverseTransform) {\n projections1.forEach(function(projection1) {\n projections2.forEach(function(projection2) {\n addTransformFunc(projection1, projection2, forwardTransform);\n addTransformFunc(projection2, projection1, inverseTransform);\n });\n });\n}\n\n\n/**\n * Clear all cached projections and transforms.\n */\nexport function clearAllProjections() {\n projections.clear();\n clearTransformFuncs();\n}\n\n\n/**\n * @param {Projection|string|undefined} projection Projection.\n * @param {string} defaultCode Default code.\n * @return {Projection} Projection.\n */\nexport function createProjection(projection, defaultCode) {\n if (!projection) {\n return get(defaultCode);\n } else if (typeof projection === 'string') {\n return get(projection);\n } else {\n return (\n /** @type {Projection} */ (projection)\n );\n }\n}\n\n\n/**\n * Creates a {@link module:ol/proj~TransformFunction} from a simple 2D coordinate transform\n * function.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} coordTransform Coordinate\n * transform.\n * @return {TransformFunction} Transform function.\n */\nexport function createTransformFromCoordinateTransform(coordTransform) {\n return (\n /**\n * @param {Array<number>} input Input.\n * @param {Array<number>=} opt_output Output.\n * @param {number=} opt_dimension Dimension.\n * @return {Array<number>} Output.\n */\n function(input, opt_output, opt_dimension) {\n var length = input.length;\n var dimension = opt_dimension !== undefined ? opt_dimension : 2;\n var output = opt_output !== undefined ? opt_output : new Array(length);\n for (var i = 0; i < length; i += dimension) {\n var point = coordTransform([input[i], input[i + 1]]);\n output[i] = point[0];\n output[i + 1] = point[1];\n for (var j = dimension - 1; j >= 2; --j) {\n output[i + j] = input[i + j];\n }\n }\n return output;\n });\n}\n\n\n/**\n * Registers coordinate transform functions to convert coordinates between the\n * source projection and the destination projection.\n * The forward and inverse functions convert coordinate pairs; this function\n * converts these into the functions used internally which also handle\n * extents and coordinate arrays.\n *\n * @param {ProjectionLike} source Source projection.\n * @param {ProjectionLike} destination Destination projection.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} forward The forward transform\n * function (that is, from the source projection to the destination\n * projection) that takes a {@link module:ol/coordinate~Coordinate} as argument and returns\n * the transformed {@link module:ol/coordinate~Coordinate}.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} inverse The inverse transform\n * function (that is, from the destination projection to the source\n * projection) that takes a {@link module:ol/coordinate~Coordinate} as argument and returns\n * the transformed {@link module:ol/coordinate~Coordinate}.\n * @api\n */\nexport function addCoordinateTransforms(source, destination, forward, inverse) {\n var sourceProj = get(source);\n var destProj = get(destination);\n addTransformFunc(sourceProj, destProj, createTransformFromCoordinateTransform(forward));\n addTransformFunc(destProj, sourceProj, createTransformFromCoordinateTransform(inverse));\n}\n\n\n/**\n * Transforms a coordinate from longitude/latitude to a different projection.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate as longitude and latitude, i.e.\n * an array with longitude as 1st and latitude as 2nd element.\n * @param {ProjectionLike=} opt_projection Target projection. The\n * default is Web Mercator, i.e. 'EPSG:3857'.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate projected to the target projection.\n * @api\n */\nexport function fromLonLat(coordinate, opt_projection) {\n return transform(coordinate, 'EPSG:4326',\n opt_projection !== undefined ? opt_projection : 'EPSG:3857');\n}\n\n\n/**\n * Transforms a coordinate to longitude/latitude.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Projected coordinate.\n * @param {ProjectionLike=} opt_projection Projection of the coordinate.\n * The default is Web Mercator, i.e. 'EPSG:3857'.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate as longitude and latitude, i.e. an array\n * with longitude as 1st and latitude as 2nd element.\n * @api\n */\nexport function toLonLat(coordinate, opt_projection) {\n var lonLat = transform(coordinate,\n opt_projection !== undefined ? opt_projection : 'EPSG:3857', 'EPSG:4326');\n var lon = lonLat[0];\n if (lon < -180 || lon > 180) {\n lonLat[0] = modulo(lon + 180, 360) - 180;\n }\n return lonLat;\n}\n\n\n/**\n * Checks if two projections are the same, that is every coordinate in one\n * projection does represent the same geographic point as the same coordinate in\n * the other projection.\n *\n * @param {Projection} projection1 Projection 1.\n * @param {Projection} projection2 Projection 2.\n * @return {boolean} Equivalent.\n * @api\n */\nexport function equivalent(projection1, projection2) {\n if (projection1 === projection2) {\n return true;\n }\n var equalUnits = projection1.getUnits() === projection2.getUnits();\n if (projection1.getCode() === projection2.getCode()) {\n return equalUnits;\n } else {\n var transformFunc = getTransformFromProjections(projection1, projection2);\n return transformFunc === cloneTransform && equalUnits;\n }\n}\n\n\n/**\n * Searches in the list of transform functions for the function for converting\n * coordinates from the source projection to the destination projection.\n *\n * @param {Projection} sourceProjection Source Projection object.\n * @param {Projection} destinationProjection Destination Projection\n * object.\n * @return {TransformFunction} Transform function.\n */\nexport function getTransformFromProjections(sourceProjection, destinationProjection) {\n var sourceCode = sourceProjection.getCode();\n var destinationCode = destinationProjection.getCode();\n var transformFunc = getTransformFunc(sourceCode, destinationCode);\n if (!transformFunc) {\n transformFunc = identityTransform;\n }\n return transformFunc;\n}\n\n\n/**\n * Given the projection-like objects, searches for a transformation\n * function to convert a coordinates array from the source projection to the\n * destination projection.\n *\n * @param {ProjectionLike} source Source.\n * @param {ProjectionLike} destination Destination.\n * @return {TransformFunction} Transform function.\n * @api\n */\nexport function getTransform(source, destination) {\n var sourceProjection = get(source);\n var destinationProjection = get(destination);\n return getTransformFromProjections(sourceProjection, destinationProjection);\n}\n\n\n/**\n * Transforms a coordinate from source projection to destination projection.\n * This returns a new coordinate (and does not modify the original).\n *\n * See {@link module:ol/proj~transformExtent} for extent transformation.\n * See the transform method of {@link module:ol/geom/Geometry~Geometry} and its\n * subclasses for geometry transforms.\n *\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {ProjectionLike} source Source projection-like.\n * @param {ProjectionLike} destination Destination projection-like.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate.\n * @api\n */\nexport function transform(coordinate, source, destination) {\n var transformFunc = getTransform(source, destination);\n return transformFunc(coordinate, undefined, coordinate.length);\n}\n\n\n/**\n * Transforms an extent from source projection to destination projection. This\n * returns a new extent (and does not modify the original).\n *\n * @param {import(\"./extent.js\").Extent} extent The extent to transform.\n * @param {ProjectionLike} source Source projection-like.\n * @param {ProjectionLike} destination Destination projection-like.\n * @return {import(\"./extent.js\").Extent} The transformed extent.\n * @api\n */\nexport function transformExtent(extent, source, destination) {\n var transformFunc = getTransform(source, destination);\n return applyTransform(extent, transformFunc);\n}\n\n\n/**\n * Transforms the given point to the destination projection.\n *\n * @param {import(\"./coordinate.js\").Coordinate} point Point.\n * @param {Projection} sourceProjection Source projection.\n * @param {Projection} destinationProjection Destination projection.\n * @return {import(\"./coordinate.js\").Coordinate} Point.\n */\nexport function transformWithProjections(point, sourceProjection, destinationProjection) {\n var transformFunc = getTransformFromProjections(sourceProjection, destinationProjection);\n return transformFunc(point);\n}\n\n/**\n * Add transforms to and from EPSG:4326 and EPSG:3857. This function is called\n * by when this module is executed and should only need to be called again after\n * `clearAllProjections()` is called (e.g. in tests).\n */\nexport function addCommon() {\n // Add transformations that don't alter coordinates to convert within set of\n // projections with equal meaning.\n addEquivalentProjections(EPSG3857_PROJECTIONS);\n addEquivalentProjections(EPSG4326_PROJECTIONS);\n // Add transformations to convert EPSG:4326 like coordinates to EPSG:3857 like\n // coordinates and back.\n addEquivalentTransforms(EPSG4326_PROJECTIONS, EPSG3857_PROJECTIONS, fromEPSG4326, toEPSG4326);\n}\n\naddCommon();\n\n//# sourceMappingURL=proj.js.map","/**\n * @module ol/transform\n */\nimport {assert} from './asserts.js';\n\n\n/**\n * An array representing an affine 2d transformation for use with\n * {@link module:ol/transform} functions. The array has 6 elements.\n * @typedef {!Array<number>} Transform\n */\n\n\n/**\n * Collection of affine 2d transformation functions. The functions work on an\n * array of 6 elements. The element order is compatible with the [SVGMatrix\n * interface](https://developer.mozilla.org/en-US/docs/Web/API/SVGMatrix) and is\n * a subset (elements a to f) of a 3×3 matrix:\n * ```\n * [ a c e ]\n * [ b d f ]\n * [ 0 0 1 ]\n * ```\n */\n\n\n/**\n * @private\n * @type {Transform}\n */\nvar tmp_ = new Array(6);\n\n\n/**\n * Create an identity transform.\n * @return {!Transform} Identity transform.\n */\nexport function create() {\n return [1, 0, 0, 1, 0, 0];\n}\n\n\n/**\n * Resets the given transform to an identity transform.\n * @param {!Transform} transform Transform.\n * @return {!Transform} Transform.\n */\nexport function reset(transform) {\n return set(transform, 1, 0, 0, 1, 0, 0);\n}\n\n\n/**\n * Multiply the underlying matrices of two transforms and return the result in\n * the first transform.\n * @param {!Transform} transform1 Transform parameters of matrix 1.\n * @param {!Transform} transform2 Transform parameters of matrix 2.\n * @return {!Transform} transform1 multiplied with transform2.\n */\nexport function multiply(transform1, transform2) {\n var a1 = transform1[0];\n var b1 = transform1[1];\n var c1 = transform1[2];\n var d1 = transform1[3];\n var e1 = transform1[4];\n var f1 = transform1[5];\n var a2 = transform2[0];\n var b2 = transform2[1];\n var c2 = transform2[2];\n var d2 = transform2[3];\n var e2 = transform2[4];\n var f2 = transform2[5];\n\n transform1[0] = a1 * a2 + c1 * b2;\n transform1[1] = b1 * a2 + d1 * b2;\n transform1[2] = a1 * c2 + c1 * d2;\n transform1[3] = b1 * c2 + d1 * d2;\n transform1[4] = a1 * e2 + c1 * f2 + e1;\n transform1[5] = b1 * e2 + d1 * f2 + f1;\n\n return transform1;\n}\n\n/**\n * Set the transform components a-f on a given transform.\n * @param {!Transform} transform Transform.\n * @param {number} a The a component of the transform.\n * @param {number} b The b component of the transform.\n * @param {number} c The c component of the transform.\n * @param {number} d The d component of the transform.\n * @param {number} e The e component of the transform.\n * @param {number} f The f component of the transform.\n * @return {!Transform} Matrix with transform applied.\n */\nexport function set(transform, a, b, c, d, e, f) {\n transform[0] = a;\n transform[1] = b;\n transform[2] = c;\n transform[3] = d;\n transform[4] = e;\n transform[5] = f;\n return transform;\n}\n\n\n/**\n * Set transform on one matrix from another matrix.\n * @param {!Transform} transform1 Matrix to set transform to.\n * @param {!Transform} transform2 Matrix to set transform from.\n * @return {!Transform} transform1 with transform from transform2 applied.\n */\nexport function setFromArray(transform1, transform2) {\n transform1[0] = transform2[0];\n transform1[1] = transform2[1];\n transform1[2] = transform2[2];\n transform1[3] = transform2[3];\n transform1[4] = transform2[4];\n transform1[5] = transform2[5];\n return transform1;\n}\n\n\n/**\n * Transforms the given coordinate with the given transform returning the\n * resulting, transformed coordinate. The coordinate will be modified in-place.\n *\n * @param {Transform} transform The transformation.\n * @param {import(\"./coordinate.js\").Coordinate|import(\"./pixel.js\").Pixel} coordinate The coordinate to transform.\n * @return {import(\"./coordinate.js\").Coordinate|import(\"./pixel.js\").Pixel} return coordinate so that operations can be\n * chained together.\n */\nexport function apply(transform, coordinate) {\n var x = coordinate[0];\n var y = coordinate[1];\n coordinate[0] = transform[0] * x + transform[2] * y + transform[4];\n coordinate[1] = transform[1] * x + transform[3] * y + transform[5];\n return coordinate;\n}\n\n\n/**\n * Applies rotation to the given transform.\n * @param {!Transform} transform Transform.\n * @param {number} angle Angle in radians.\n * @return {!Transform} The rotated transform.\n */\nexport function rotate(transform, angle) {\n var cos = Math.cos(angle);\n var sin = Math.sin(angle);\n return multiply(transform, set(tmp_, cos, sin, -sin, cos, 0, 0));\n}\n\n\n/**\n * Applies scale to a given transform.\n * @param {!Transform} transform Transform.\n * @param {number} x Scale factor x.\n * @param {number} y Scale factor y.\n * @return {!Transform} The scaled transform.\n */\nexport function scale(transform, x, y) {\n return multiply(transform, set(tmp_, x, 0, 0, y, 0, 0));\n}\n\n\n/**\n * Applies translation to the given transform.\n * @param {!Transform} transform Transform.\n * @param {number} dx Translation x.\n * @param {number} dy Translation y.\n * @return {!Transform} The translated transform.\n */\nexport function translate(transform, dx, dy) {\n return multiply(transform, set(tmp_, 1, 0, 0, 1, dx, dy));\n}\n\n\n/**\n * Creates a composite transform given an initial translation, scale, rotation, and\n * final translation (in that order only, not commutative).\n * @param {!Transform} transform The transform (will be modified in place).\n * @param {number} dx1 Initial translation x.\n * @param {number} dy1 Initial translation y.\n * @param {number} sx Scale factor x.\n * @param {number} sy Scale factor y.\n * @param {number} angle Rotation (in counter-clockwise radians).\n * @param {number} dx2 Final translation x.\n * @param {number} dy2 Final translation y.\n * @return {!Transform} The composite transform.\n */\nexport function compose(transform, dx1, dy1, sx, sy, angle, dx2, dy2) {\n var sin = Math.sin(angle);\n var cos = Math.cos(angle);\n transform[0] = sx * cos;\n transform[1] = sy * sin;\n transform[2] = -sx * sin;\n transform[3] = sy * cos;\n transform[4] = dx2 * sx * cos - dy2 * sx * sin + dx1;\n transform[5] = dx2 * sy * sin + dy2 * sy * cos + dy1;\n return transform;\n}\n\n\n/**\n * Invert the given transform.\n * @param {!Transform} transform Transform.\n * @return {!Transform} Inverse of the transform.\n */\nexport function invert(transform) {\n var det = determinant(transform);\n assert(det !== 0, 32); // Transformation matrix cannot be inverted\n\n var a = transform[0];\n var b = transform[1];\n var c = transform[2];\n var d = transform[3];\n var e = transform[4];\n var f = transform[5];\n\n transform[0] = d / det;\n transform[1] = -b / det;\n transform[2] = -c / det;\n transform[3] = a / det;\n transform[4] = (c * f - d * e) / det;\n transform[5] = -(a * f - b * e) / det;\n\n return transform;\n}\n\n\n/**\n * Returns the determinant of the given matrix.\n * @param {!Transform} mat Matrix.\n * @return {number} Determinant.\n */\nexport function determinant(mat) {\n return mat[0] * mat[3] - mat[1] * mat[2];\n}\n\n//# sourceMappingURL=transform.js.map","/**\n * @module ol/geom/Geometry\n */\nimport {abstract} from '../util.js';\nimport BaseObject from '../Object.js';\nimport {createEmpty, getHeight, returnOrUpdate} from '../extent.js';\nimport {transform2D} from './flat/transform.js';\nimport {get as getProjection, getTransform} from '../proj.js';\nimport Units from '../proj/Units.js';\nimport {create as createTransform, compose as composeTransform} from '../transform.js';\n\n\n/**\n * @type {import(\"../transform.js\").Transform}\n */\nvar tmpTransform = createTransform();\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for vector geometries.\n *\n * To get notified of changes to the geometry, register a listener for the\n * generic `change` event on your geometry instance.\n *\n * @abstract\n * @api\n */\nvar Geometry = /*@__PURE__*/(function (BaseObject) {\n function Geometry() {\n\n BaseObject.call(this);\n\n /**\n * @private\n * @type {import(\"../extent.js\").Extent}\n */\n this.extent_ = createEmpty();\n\n /**\n * @private\n * @type {number}\n */\n this.extentRevision_ = -1;\n\n /**\n * @protected\n * @type {Object<string, Geometry>}\n */\n this.simplifiedGeometryCache = {};\n\n /**\n * @protected\n * @type {number}\n */\n this.simplifiedGeometryMaxMinSquaredTolerance = 0;\n\n /**\n * @protected\n * @type {number}\n */\n this.simplifiedGeometryRevision = 0;\n\n }\n\n if ( BaseObject ) Geometry.__proto__ = BaseObject;\n Geometry.prototype = Object.create( BaseObject && BaseObject.prototype );\n Geometry.prototype.constructor = Geometry;\n\n /**\n * Make a complete copy of the geometry.\n * @abstract\n * @return {!Geometry} Clone.\n */\n Geometry.prototype.clone = function clone () {\n return abstract();\n };\n\n /**\n * @abstract\n * @param {number} x X.\n * @param {number} y Y.\n * @param {import(\"../coordinate.js\").Coordinate} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @return {number} Minimum squared distance.\n */\n Geometry.prototype.closestPointXY = function closestPointXY (x, y, closestPoint, minSquaredDistance) {\n return abstract();\n };\n\n /**\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\n Geometry.prototype.containsXY = function containsXY (x, y) {\n return false;\n };\n\n /**\n * Return the closest point of the geometry to the passed point as\n * {@link module:ol/coordinate~Coordinate coordinate}.\n * @param {import(\"../coordinate.js\").Coordinate} point Point.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_closestPoint Closest point.\n * @return {import(\"../coordinate.js\").Coordinate} Closest point.\n * @api\n */\n Geometry.prototype.getClosestPoint = function getClosestPoint (point, opt_closestPoint) {\n var closestPoint = opt_closestPoint ? opt_closestPoint : [NaN, NaN];\n this.closestPointXY(point[0], point[1], closestPoint, Infinity);\n return closestPoint;\n };\n\n /**\n * Returns true if this geometry includes the specified coordinate. If the\n * coordinate is on the boundary of the geometry, returns false.\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @return {boolean} Contains coordinate.\n * @api\n */\n Geometry.prototype.intersectsCoordinate = function intersectsCoordinate (coordinate) {\n return this.containsXY(coordinate[0], coordinate[1]);\n };\n\n /**\n * @abstract\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @protected\n * @return {import(\"../extent.js\").Extent} extent Extent.\n */\n Geometry.prototype.computeExtent = function computeExtent (extent) {\n return abstract();\n };\n\n /**\n * Get the extent of the geometry.\n * @param {import(\"../extent.js\").Extent=} opt_extent Extent.\n * @return {import(\"../extent.js\").Extent} extent Extent.\n * @api\n */\n Geometry.prototype.getExtent = function getExtent (opt_extent) {\n if (this.extentRevision_ != this.getRevision()) {\n this.extent_ = this.computeExtent(this.extent_);\n this.extentRevision_ = this.getRevision();\n }\n return returnOrUpdate(this.extent_, opt_extent);\n };\n\n /**\n * Rotate the geometry around a given coordinate. This modifies the geometry\n * coordinates in place.\n * @abstract\n * @param {number} angle Rotation angle in radians.\n * @param {import(\"../coordinate.js\").Coordinate} anchor The rotation center.\n * @api\n */\n Geometry.prototype.rotate = function rotate (angle, anchor) {\n abstract();\n };\n\n /**\n * Scale the geometry (with an optional origin). This modifies the geometry\n * coordinates in place.\n * @abstract\n * @param {number} sx The scaling factor in the x-direction.\n * @param {number=} opt_sy The scaling factor in the y-direction (defaults to\n * sx).\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor The scale origin (defaults to the center\n * of the geometry extent).\n * @api\n */\n Geometry.prototype.scale = function scale (sx, opt_sy, opt_anchor) {\n abstract();\n };\n\n /**\n * Create a simplified version of this geometry. For linestrings, this uses\n * the the {@link\n * https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm\n * Douglas Peucker} algorithm. For polygons, a quantization-based\n * simplification is used to preserve topology.\n * @param {number} tolerance The tolerance distance for simplification.\n * @return {Geometry} A new, simplified version of the original geometry.\n * @api\n */\n Geometry.prototype.simplify = function simplify (tolerance) {\n return this.getSimplifiedGeometry(tolerance * tolerance);\n };\n\n /**\n * Create a simplified version of this geometry using the Douglas Peucker\n * algorithm.\n * See https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm.\n * @abstract\n * @param {number} squaredTolerance Squared tolerance.\n * @return {Geometry} Simplified geometry.\n */\n Geometry.prototype.getSimplifiedGeometry = function getSimplifiedGeometry (squaredTolerance) {\n return abstract();\n };\n\n /**\n * Get the type of this geometry.\n * @abstract\n * @return {import(\"./GeometryType.js\").default} Geometry type.\n */\n Geometry.prototype.getType = function getType () {\n return abstract();\n };\n\n /**\n * Apply a transform function to each coordinate of the geometry.\n * The geometry is modified in place.\n * If you do not want the geometry modified in place, first `clone()` it and\n * then use this function on the clone.\n * @abstract\n * @param {import(\"../proj.js\").TransformFunction} transformFn Transform.\n */\n Geometry.prototype.applyTransform = function applyTransform (transformFn) {\n abstract();\n };\n\n /**\n * Test if the geometry and the passed extent intersect.\n * @abstract\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @return {boolean} `true` if the geometry and the extent intersect.\n */\n Geometry.prototype.intersectsExtent = function intersectsExtent (extent) {\n return abstract();\n };\n\n /**\n * Translate the geometry. This modifies the geometry coordinates in place. If\n * instead you want a new geometry, first `clone()` this geometry.\n * @abstract\n * @param {number} deltaX Delta X.\n * @param {number} deltaY Delta Y.\n * @api\n */\n Geometry.prototype.translate = function translate (deltaX, deltaY) {\n abstract();\n };\n\n /**\n * Transform each coordinate of the geometry from one coordinate reference\n * system to another. The geometry is modified in place.\n * For example, a line will be transformed to a line and a circle to a circle.\n * If you do not want the geometry modified in place, first `clone()` it and\n * then use this function on the clone.\n *\n * @param {import(\"../proj.js\").ProjectionLike} source The current projection. Can be a\n * string identifier or a {@link module:ol/proj/Projection~Projection} object.\n * @param {import(\"../proj.js\").ProjectionLike} destination The desired projection. Can be a\n * string identifier or a {@link module:ol/proj/Projection~Projection} object.\n * @return {Geometry} This geometry. Note that original geometry is\n * modified in place.\n * @api\n */\n Geometry.prototype.transform = function transform (source, destination) {\n /** @type {import(\"../proj/Projection.js\").default} */\n var sourceProj = getProjection(source);\n var transformFn = sourceProj.getUnits() == Units.TILE_PIXELS ?\n function(inCoordinates, outCoordinates, stride) {\n var pixelExtent = sourceProj.getExtent();\n var projectedExtent = sourceProj.getWorldExtent();\n var scale = getHeight(projectedExtent) / getHeight(pixelExtent);\n composeTransform(tmpTransform,\n projectedExtent[0], projectedExtent[3],\n scale, -scale, 0,\n 0, 0);\n transform2D(inCoordinates, 0, inCoordinates.length, stride,\n tmpTransform, outCoordinates);\n return getTransform(sourceProj, destination)(inCoordinates, outCoordinates, stride);\n } :\n getTransform(sourceProj, destination);\n this.applyTransform(transformFn);\n return this;\n };\n\n return Geometry;\n}(BaseObject));\n\n\nexport default Geometry;\n\n//# sourceMappingURL=Geometry.js.map","/**\n * @module ol/geom/SimpleGeometry\n */\nimport {abstract} from '../util.js';\nimport {createOrUpdateFromFlatCoordinates, getCenter} from '../extent.js';\nimport Geometry from './Geometry.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport {rotate, scale, translate, transform2D} from './flat/transform.js';\nimport {clear} from '../obj.js';\n\n/**\n * @classdesc\n * Abstract base class; only used for creating subclasses; do not instantiate\n * in apps, as cannot be rendered.\n *\n * @abstract\n * @api\n */\nvar SimpleGeometry = /*@__PURE__*/(function (Geometry) {\n function SimpleGeometry() {\n\n Geometry.call(this);\n\n /**\n * @protected\n * @type {GeometryLayout}\n */\n this.layout = GeometryLayout.XY;\n\n /**\n * @protected\n * @type {number}\n */\n this.stride = 2;\n\n /**\n * @protected\n * @type {Array<number>}\n */\n this.flatCoordinates = null;\n\n }\n\n if ( Geometry ) SimpleGeometry.__proto__ = Geometry;\n SimpleGeometry.prototype = Object.create( Geometry && Geometry.prototype );\n SimpleGeometry.prototype.constructor = SimpleGeometry;\n\n /**\n * @inheritDoc\n */\n SimpleGeometry.prototype.computeExtent = function computeExtent (extent) {\n return createOrUpdateFromFlatCoordinates(this.flatCoordinates,\n 0, this.flatCoordinates.length, this.stride, extent);\n };\n\n /**\n * @abstract\n * @return {Array} Coordinates.\n */\n SimpleGeometry.prototype.getCoordinates = function getCoordinates () {\n return abstract();\n };\n\n /**\n * Return the first coordinate of the geometry.\n * @return {import(\"../coordinate.js\").Coordinate} First coordinate.\n * @api\n */\n SimpleGeometry.prototype.getFirstCoordinate = function getFirstCoordinate () {\n return this.flatCoordinates.slice(0, this.stride);\n };\n\n /**\n * @return {Array<number>} Flat coordinates.\n */\n SimpleGeometry.prototype.getFlatCoordinates = function getFlatCoordinates () {\n return this.flatCoordinates;\n };\n\n /**\n * Return the last coordinate of the geometry.\n * @return {import(\"../coordinate.js\").Coordinate} Last point.\n * @api\n */\n SimpleGeometry.prototype.getLastCoordinate = function getLastCoordinate () {\n return this.flatCoordinates.slice(this.flatCoordinates.length - this.stride);\n };\n\n /**\n * Return the {@link module:ol/geom/GeometryLayout layout} of the geometry.\n * @return {GeometryLayout} Layout.\n * @api\n */\n SimpleGeometry.prototype.getLayout = function getLayout () {\n return this.layout;\n };\n\n /**\n * @inheritDoc\n */\n SimpleGeometry.prototype.getSimplifiedGeometry = function getSimplifiedGeometry (squaredTolerance) {\n if (this.simplifiedGeometryRevision != this.getRevision()) {\n clear(this.simplifiedGeometryCache);\n this.simplifiedGeometryMaxMinSquaredTolerance = 0;\n this.simplifiedGeometryRevision = this.getRevision();\n }\n // If squaredTolerance is negative or if we know that simplification will not\n // have any effect then just return this.\n if (squaredTolerance < 0 ||\n (this.simplifiedGeometryMaxMinSquaredTolerance !== 0 &&\n squaredTolerance <= this.simplifiedGeometryMaxMinSquaredTolerance)) {\n return this;\n }\n var key = squaredTolerance.toString();\n if (this.simplifiedGeometryCache.hasOwnProperty(key)) {\n return this.simplifiedGeometryCache[key];\n } else {\n var simplifiedGeometry =\n this.getSimplifiedGeometryInternal(squaredTolerance);\n var simplifiedFlatCoordinates = simplifiedGeometry.getFlatCoordinates();\n if (simplifiedFlatCoordinates.length < this.flatCoordinates.length) {\n this.simplifiedGeometryCache[key] = simplifiedGeometry;\n return simplifiedGeometry;\n } else {\n // Simplification did not actually remove any coordinates. We now know\n // that any calls to getSimplifiedGeometry with a squaredTolerance less\n // than or equal to the current squaredTolerance will also not have any\n // effect. This allows us to short circuit simplification (saving CPU\n // cycles) and prevents the cache of simplified geometries from filling\n // up with useless identical copies of this geometry (saving memory).\n this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance;\n return this;\n }\n }\n };\n\n /**\n * @param {number} squaredTolerance Squared tolerance.\n * @return {SimpleGeometry} Simplified geometry.\n * @protected\n */\n SimpleGeometry.prototype.getSimplifiedGeometryInternal = function getSimplifiedGeometryInternal (squaredTolerance) {\n return this;\n };\n\n /**\n * @return {number} Stride.\n */\n SimpleGeometry.prototype.getStride = function getStride () {\n return this.stride;\n };\n\n /**\n * @param {GeometryLayout} layout Layout.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n */\n SimpleGeometry.prototype.setFlatCoordinates = function setFlatCoordinates (layout, flatCoordinates) {\n this.stride = getStrideForLayout(layout);\n this.layout = layout;\n this.flatCoordinates = flatCoordinates;\n };\n\n /**\n * @abstract\n * @param {!Array} coordinates Coordinates.\n * @param {GeometryLayout=} opt_layout Layout.\n */\n SimpleGeometry.prototype.setCoordinates = function setCoordinates (coordinates, opt_layout) {\n abstract();\n };\n\n /**\n * @param {GeometryLayout|undefined} layout Layout.\n * @param {Array} coordinates Coordinates.\n * @param {number} nesting Nesting.\n * @protected\n */\n SimpleGeometry.prototype.setLayout = function setLayout (layout, coordinates, nesting) {\n /** @type {number} */\n var stride;\n if (layout) {\n stride = getStrideForLayout(layout);\n } else {\n for (var i = 0; i < nesting; ++i) {\n if (coordinates.length === 0) {\n this.layout = GeometryLayout.XY;\n this.stride = 2;\n return;\n } else {\n coordinates = /** @type {Array} */ (coordinates[0]);\n }\n }\n stride = coordinates.length;\n layout = getLayoutForStride(stride);\n }\n this.layout = layout;\n this.stride = stride;\n };\n\n /**\n * @inheritDoc\n * @api\n */\n SimpleGeometry.prototype.applyTransform = function applyTransform (transformFn) {\n if (this.flatCoordinates) {\n transformFn(this.flatCoordinates, this.flatCoordinates, this.stride);\n this.changed();\n }\n };\n\n /**\n * @inheritDoc\n * @api\n */\n SimpleGeometry.prototype.rotate = function rotate$1 (angle, anchor) {\n var flatCoordinates = this.getFlatCoordinates();\n if (flatCoordinates) {\n var stride = this.getStride();\n rotate(\n flatCoordinates, 0, flatCoordinates.length,\n stride, angle, anchor, flatCoordinates);\n this.changed();\n }\n };\n\n /**\n * @inheritDoc\n * @api\n */\n SimpleGeometry.prototype.scale = function scale$1 (sx, opt_sy, opt_anchor) {\n var sy = opt_sy;\n if (sy === undefined) {\n sy = sx;\n }\n var anchor = opt_anchor;\n if (!anchor) {\n anchor = getCenter(this.getExtent());\n }\n var flatCoordinates = this.getFlatCoordinates();\n if (flatCoordinates) {\n var stride = this.getStride();\n scale(\n flatCoordinates, 0, flatCoordinates.length,\n stride, sx, sy, anchor, flatCoordinates);\n this.changed();\n }\n };\n\n /**\n * @inheritDoc\n * @api\n */\n SimpleGeometry.prototype.translate = function translate$1 (deltaX, deltaY) {\n var flatCoordinates = this.getFlatCoordinates();\n if (flatCoordinates) {\n var stride = this.getStride();\n translate(\n flatCoordinates, 0, flatCoordinates.length, stride,\n deltaX, deltaY, flatCoordinates);\n this.changed();\n }\n };\n\n return SimpleGeometry;\n}(Geometry));\n\n\n/**\n * @param {number} stride Stride.\n * @return {GeometryLayout} layout Layout.\n */\nfunction getLayoutForStride(stride) {\n var layout;\n if (stride == 2) {\n layout = GeometryLayout.XY;\n } else if (stride == 3) {\n layout = GeometryLayout.XYZ;\n } else if (stride == 4) {\n layout = GeometryLayout.XYZM;\n }\n return (\n /** @type {GeometryLayout} */ (layout)\n );\n}\n\n\n/**\n * @param {GeometryLayout} layout Layout.\n * @return {number} Stride.\n */\nexport function getStrideForLayout(layout) {\n var stride;\n if (layout == GeometryLayout.XY) {\n stride = 2;\n } else if (layout == GeometryLayout.XYZ || layout == GeometryLayout.XYM) {\n stride = 3;\n } else if (layout == GeometryLayout.XYZM) {\n stride = 4;\n }\n return /** @type {number} */ (stride);\n}\n\n\n/**\n * @param {SimpleGeometry} simpleGeometry Simple geometry.\n * @param {import(\"../transform.js\").Transform} transform Transform.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed flat coordinates.\n */\nexport function transformGeom2D(simpleGeometry, transform, opt_dest) {\n var flatCoordinates = simpleGeometry.getFlatCoordinates();\n if (!flatCoordinates) {\n return null;\n } else {\n var stride = simpleGeometry.getStride();\n return transform2D(\n flatCoordinates, 0, flatCoordinates.length, stride,\n transform, opt_dest);\n }\n}\n\nexport default SimpleGeometry;\n\n//# sourceMappingURL=SimpleGeometry.js.map","/**\n * @module ol/geom/flat/area\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRing(flatCoordinates, offset, end, stride) {\n var twiceArea = 0;\n var x1 = flatCoordinates[end - stride];\n var y1 = flatCoordinates[end - stride + 1];\n for (; offset < end; offset += stride) {\n var x2 = flatCoordinates[offset];\n var y2 = flatCoordinates[offset + 1];\n twiceArea += y1 * x2 - x1 * y2;\n x1 = x2;\n y1 = y2;\n }\n return twiceArea / 2;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRings(flatCoordinates, offset, ends, stride) {\n var area = 0;\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n area += linearRing(flatCoordinates, offset, end, stride);\n offset = end;\n }\n return area;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRingss(flatCoordinates, offset, endss, stride) {\n var area = 0;\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n area += linearRings(flatCoordinates, offset, ends, stride);\n offset = ends[ends.length - 1];\n }\n return area;\n}\n\n//# sourceMappingURL=area.js.map","/**\n * @module ol/geom/flat/closest\n */\nimport {lerp, squaredDistance as squaredDx} from '../../math.js';\n\n\n/**\n * Returns the point on the 2D line segment flatCoordinates[offset1] to\n * flatCoordinates[offset2] that is closest to the point (x, y). Extra\n * dimensions are linearly interpolated.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset1 Offset 1.\n * @param {number} offset2 Offset 2.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n */\nfunction assignClosest(flatCoordinates, offset1, offset2, stride, x, y, closestPoint) {\n var x1 = flatCoordinates[offset1];\n var y1 = flatCoordinates[offset1 + 1];\n var dx = flatCoordinates[offset2] - x1;\n var dy = flatCoordinates[offset2 + 1] - y1;\n var offset;\n if (dx === 0 && dy === 0) {\n offset = offset1;\n } else {\n var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);\n if (t > 1) {\n offset = offset2;\n } else if (t > 0) {\n for (var i = 0; i < stride; ++i) {\n closestPoint[i] = lerp(flatCoordinates[offset1 + i],\n flatCoordinates[offset2 + i], t);\n }\n closestPoint.length = stride;\n return;\n } else {\n offset = offset1;\n }\n }\n for (var i$1 = 0; i$1 < stride; ++i$1) {\n closestPoint[i$1] = flatCoordinates[offset + i$1];\n }\n closestPoint.length = stride;\n}\n\n\n/**\n * Return the squared of the largest distance between any pair of consecutive\n * coordinates.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function maxSquaredDelta(flatCoordinates, offset, end, stride, max) {\n var x1 = flatCoordinates[offset];\n var y1 = flatCoordinates[offset + 1];\n for (offset += stride; offset < end; offset += stride) {\n var x2 = flatCoordinates[offset];\n var y2 = flatCoordinates[offset + 1];\n var squaredDelta = squaredDx(x1, y1, x2, y2);\n if (squaredDelta > max) {\n max = squaredDelta;\n }\n x1 = x2;\n y1 = y2;\n }\n return max;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function arrayMaxSquaredDelta(flatCoordinates, offset, ends, stride, max) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n max = maxSquaredDelta(\n flatCoordinates, offset, end, stride, max);\n offset = end;\n }\n return max;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function multiArrayMaxSquaredDelta(flatCoordinates, offset, endss, stride, max) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n max = arrayMaxSquaredDelta(\n flatCoordinates, offset, ends, stride, max);\n offset = ends[ends.length - 1];\n }\n return max;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestPoint(flatCoordinates, offset, end,\n stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,\n opt_tmpPoint) {\n if (offset == end) {\n return minSquaredDistance;\n }\n var i, squaredDistance;\n if (maxDelta === 0) {\n // All points are identical, so just test the first point.\n squaredDistance = squaredDx(\n x, y, flatCoordinates[offset], flatCoordinates[offset + 1]);\n if (squaredDistance < minSquaredDistance) {\n for (i = 0; i < stride; ++i) {\n closestPoint[i] = flatCoordinates[offset + i];\n }\n closestPoint.length = stride;\n return squaredDistance;\n } else {\n return minSquaredDistance;\n }\n }\n var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n var index = offset + stride;\n while (index < end) {\n assignClosest(\n flatCoordinates, index - stride, index, stride, x, y, tmpPoint);\n squaredDistance = squaredDx(x, y, tmpPoint[0], tmpPoint[1]);\n if (squaredDistance < minSquaredDistance) {\n minSquaredDistance = squaredDistance;\n for (i = 0; i < stride; ++i) {\n closestPoint[i] = tmpPoint[i];\n }\n closestPoint.length = stride;\n index += stride;\n } else {\n // Skip ahead multiple points, because we know that all the skipped\n // points cannot be any closer than the closest point we have found so\n // far. We know this because we know how close the current point is, how\n // close the closest point we have found so far is, and the maximum\n // distance between consecutive points. For example, if we're currently\n // at distance 10, the best we've found so far is 3, and that the maximum\n // distance between consecutive points is 2, then we'll need to skip at\n // least (10 - 3) / 2 == 3 (rounded down) points to have any chance of\n // finding a closer point. We use Math.max(..., 1) to ensure that we\n // always advance at least one point, to avoid an infinite loop.\n index += stride * Math.max(\n ((Math.sqrt(squaredDistance) -\n Math.sqrt(minSquaredDistance)) / maxDelta) | 0, 1);\n }\n }\n if (isRing) {\n // Check the closing segment.\n assignClosest(\n flatCoordinates, end - stride, offset, stride, x, y, tmpPoint);\n squaredDistance = squaredDx(x, y, tmpPoint[0], tmpPoint[1]);\n if (squaredDistance < minSquaredDistance) {\n minSquaredDistance = squaredDistance;\n for (i = 0; i < stride; ++i) {\n closestPoint[i] = tmpPoint[i];\n }\n closestPoint.length = stride;\n }\n }\n return minSquaredDistance;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestArrayPoint(flatCoordinates, offset, ends,\n stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,\n opt_tmpPoint) {\n var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n minSquaredDistance = assignClosestPoint(\n flatCoordinates, offset, end, stride,\n maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);\n offset = end;\n }\n return minSquaredDistance;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestMultiArrayPoint(flatCoordinates, offset,\n endss, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance,\n opt_tmpPoint) {\n var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n minSquaredDistance = assignClosestArrayPoint(\n flatCoordinates, offset, ends, stride,\n maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);\n offset = ends[ends.length - 1];\n }\n return minSquaredDistance;\n}\n\n//# sourceMappingURL=closest.js.map","/**\n * @module ol/geom/flat/deflate\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {number} stride Stride.\n * @return {number} offset Offset.\n */\nexport function deflateCoordinate(flatCoordinates, offset, coordinate, stride) {\n for (var i = 0, ii = coordinate.length; i < ii; ++i) {\n flatCoordinates[offset++] = coordinate[i];\n }\n return offset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<import(\"../../coordinate.js\").Coordinate>} coordinates Coordinates.\n * @param {number} stride Stride.\n * @return {number} offset Offset.\n */\nexport function deflateCoordinates(flatCoordinates, offset, coordinates, stride) {\n for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n var coordinate = coordinates[i];\n for (var j = 0; j < stride; ++j) {\n flatCoordinates[offset++] = coordinate[j];\n }\n }\n return offset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<import(\"../../coordinate.js\").Coordinate>>} coordinatess Coordinatess.\n * @param {number} stride Stride.\n * @param {Array<number>=} opt_ends Ends.\n * @return {Array<number>} Ends.\n */\nexport function deflateCoordinatesArray(flatCoordinates, offset, coordinatess, stride, opt_ends) {\n var ends = opt_ends ? opt_ends : [];\n var i = 0;\n for (var j = 0, jj = coordinatess.length; j < jj; ++j) {\n var end = deflateCoordinates(\n flatCoordinates, offset, coordinatess[j], stride);\n ends[i++] = end;\n offset = end;\n }\n ends.length = i;\n return ends;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>} coordinatesss Coordinatesss.\n * @param {number} stride Stride.\n * @param {Array<Array<number>>=} opt_endss Endss.\n * @return {Array<Array<number>>} Endss.\n */\nexport function deflateMultiCoordinatesArray(flatCoordinates, offset, coordinatesss, stride, opt_endss) {\n var endss = opt_endss ? opt_endss : [];\n var i = 0;\n for (var j = 0, jj = coordinatesss.length; j < jj; ++j) {\n var ends = deflateCoordinatesArray(\n flatCoordinates, offset, coordinatesss[j], stride, endss[i]);\n endss[i++] = ends;\n offset = ends[ends.length - 1];\n }\n endss.length = i;\n return endss;\n}\n\n//# sourceMappingURL=deflate.js.map","/**\n * @module ol/geom/flat/inflate\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {Array<import(\"../../coordinate.js\").Coordinate>=} opt_coordinates Coordinates.\n * @return {Array<import(\"../../coordinate.js\").Coordinate>} Coordinates.\n */\nexport function inflateCoordinates(flatCoordinates, offset, end, stride, opt_coordinates) {\n var coordinates = opt_coordinates !== undefined ? opt_coordinates : [];\n var i = 0;\n for (var j = offset; j < end; j += stride) {\n coordinates[i++] = flatCoordinates.slice(j, j + stride);\n }\n coordinates.length = i;\n return coordinates;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {Array<Array<import(\"../../coordinate.js\").Coordinate>>=} opt_coordinatess Coordinatess.\n * @return {Array<Array<import(\"../../coordinate.js\").Coordinate>>} Coordinatess.\n */\nexport function inflateCoordinatesArray(flatCoordinates, offset, ends, stride, opt_coordinatess) {\n var coordinatess = opt_coordinatess !== undefined ? opt_coordinatess : [];\n var i = 0;\n for (var j = 0, jj = ends.length; j < jj; ++j) {\n var end = ends[j];\n coordinatess[i++] = inflateCoordinates(\n flatCoordinates, offset, end, stride, coordinatess[i]);\n offset = end;\n }\n coordinatess.length = i;\n return coordinatess;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>=} opt_coordinatesss\n * Coordinatesss.\n * @return {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>} Coordinatesss.\n */\nexport function inflateMultiCoordinatesArray(flatCoordinates, offset, endss, stride, opt_coordinatesss) {\n var coordinatesss = opt_coordinatesss !== undefined ? opt_coordinatesss : [];\n var i = 0;\n for (var j = 0, jj = endss.length; j < jj; ++j) {\n var ends = endss[j];\n coordinatesss[i++] = inflateCoordinatesArray(\n flatCoordinates, offset, ends, stride, coordinatesss[i]);\n offset = ends[ends.length - 1];\n }\n coordinatesss.length = i;\n return coordinatesss;\n}\n\n//# sourceMappingURL=inflate.js.map","/**\n * @module ol/geom/flat/simplify\n */\n// Based on simplify-js https://github.com/mourner/simplify-js\n// Copyright (c) 2012, Vladimir Agafonkin\n// All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are met:\n//\n// 1. Redistributions of source code must retain the above copyright notice,\n// this list of conditions and the following disclaimer.\n//\n// 2. Redistributions in binary form must reproduce the above copyright\n// notice, this list of conditions and the following disclaimer in the\n// documentation and/or other materials provided with the distribution.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\"\n// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\n// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE\n// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\n// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\n// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\n// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\n// POSSIBILITY OF SUCH DAMAGE.\n\nimport {squaredSegmentDistance, squaredDistance} from '../../math.js';\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {boolean} highQuality Highest quality.\n * @param {Array<number>=} opt_simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @return {Array<number>} Simplified line string.\n */\nexport function simplifyLineString(flatCoordinates, offset, end,\n stride, squaredTolerance, highQuality, opt_simplifiedFlatCoordinates) {\n var simplifiedFlatCoordinates = opt_simplifiedFlatCoordinates !== undefined ?\n opt_simplifiedFlatCoordinates : [];\n if (!highQuality) {\n end = radialDistance(flatCoordinates, offset, end,\n stride, squaredTolerance,\n simplifiedFlatCoordinates, 0);\n flatCoordinates = simplifiedFlatCoordinates;\n offset = 0;\n stride = 2;\n }\n simplifiedFlatCoordinates.length = douglasPeucker(\n flatCoordinates, offset, end, stride, squaredTolerance,\n simplifiedFlatCoordinates, 0);\n return simplifiedFlatCoordinates;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function douglasPeucker(flatCoordinates, offset, end,\n stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n var n = (end - offset) / stride;\n if (n < 3) {\n for (; offset < end; offset += stride) {\n simplifiedFlatCoordinates[simplifiedOffset++] =\n flatCoordinates[offset];\n simplifiedFlatCoordinates[simplifiedOffset++] =\n flatCoordinates[offset + 1];\n }\n return simplifiedOffset;\n }\n /** @type {Array<number>} */\n var markers = new Array(n);\n markers[0] = 1;\n markers[n - 1] = 1;\n /** @type {Array<number>} */\n var stack = [offset, end - stride];\n var index = 0;\n while (stack.length > 0) {\n var last = stack.pop();\n var first = stack.pop();\n var maxSquaredDistance = 0;\n var x1 = flatCoordinates[first];\n var y1 = flatCoordinates[first + 1];\n var x2 = flatCoordinates[last];\n var y2 = flatCoordinates[last + 1];\n for (var i = first + stride; i < last; i += stride) {\n var x = flatCoordinates[i];\n var y = flatCoordinates[i + 1];\n var squaredDistance = squaredSegmentDistance(\n x, y, x1, y1, x2, y2);\n if (squaredDistance > maxSquaredDistance) {\n index = i;\n maxSquaredDistance = squaredDistance;\n }\n }\n if (maxSquaredDistance > squaredTolerance) {\n markers[(index - offset) / stride] = 1;\n if (first + stride < index) {\n stack.push(first, index);\n }\n if (index + stride < last) {\n stack.push(index, last);\n }\n }\n }\n for (var i$1 = 0; i$1 < n; ++i$1) {\n if (markers[i$1]) {\n simplifiedFlatCoordinates[simplifiedOffset++] =\n flatCoordinates[offset + i$1 * stride];\n simplifiedFlatCoordinates[simplifiedOffset++] =\n flatCoordinates[offset + i$1 * stride + 1];\n }\n }\n return simplifiedOffset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<number>} simplifiedEnds Simplified ends.\n * @return {number} Simplified offset.\n */\nexport function douglasPeuckerArray(flatCoordinates, offset,\n ends, stride, squaredTolerance, simplifiedFlatCoordinates,\n simplifiedOffset, simplifiedEnds) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n simplifiedOffset = douglasPeucker(\n flatCoordinates, offset, end, stride, squaredTolerance,\n simplifiedFlatCoordinates, simplifiedOffset);\n simplifiedEnds.push(simplifiedOffset);\n offset = end;\n }\n return simplifiedOffset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<Array<number>>} simplifiedEndss Simplified endss.\n * @return {number} Simplified offset.\n */\nexport function douglasPeuckerMultiArray(\n flatCoordinates, offset, endss, stride, squaredTolerance,\n simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n var simplifiedEnds = [];\n simplifiedOffset = douglasPeuckerArray(\n flatCoordinates, offset, ends, stride, squaredTolerance,\n simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);\n simplifiedEndss.push(simplifiedEnds);\n offset = ends[ends.length - 1];\n }\n return simplifiedOffset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function radialDistance(flatCoordinates, offset, end,\n stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n if (end <= offset + stride) {\n // zero or one point, no simplification possible, so copy and return\n for (; offset < end; offset += stride) {\n simplifiedFlatCoordinates[simplifiedOffset++] = flatCoordinates[offset];\n simplifiedFlatCoordinates[simplifiedOffset++] =\n flatCoordinates[offset + 1];\n }\n return simplifiedOffset;\n }\n var x1 = flatCoordinates[offset];\n var y1 = flatCoordinates[offset + 1];\n // copy first point\n simplifiedFlatCoordinates[simplifiedOffset++] = x1;\n simplifiedFlatCoordinates[simplifiedOffset++] = y1;\n var x2 = x1;\n var y2 = y1;\n for (offset += stride; offset < end; offset += stride) {\n x2 = flatCoordinates[offset];\n y2 = flatCoordinates[offset + 1];\n if (squaredDistance(x1, y1, x2, y2) > squaredTolerance) {\n // copy point at offset\n simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n x1 = x2;\n y1 = y2;\n }\n }\n if (x2 != x1 || y2 != y1) {\n // copy last point\n simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n }\n return simplifiedOffset;\n}\n\n\n/**\n * @param {number} value Value.\n * @param {number} tolerance Tolerance.\n * @return {number} Rounded value.\n */\nexport function snap(value, tolerance) {\n return tolerance * Math.round(value / tolerance);\n}\n\n\n/**\n * Simplifies a line string using an algorithm designed by Tim Schaub.\n * Coordinates are snapped to the nearest value in a virtual grid and\n * consecutive duplicate coordinates are discarded. This effectively preserves\n * topology as the simplification of any subsection of a line string is\n * independent of the rest of the line string. This means that, for examples,\n * the common edge between two polygons will be simplified to the same line\n * string independently in both polygons. This implementation uses a single\n * pass over the coordinates and eliminates intermediate collinear points.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function quantize(flatCoordinates, offset, end, stride,\n tolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n // do nothing if the line is empty\n if (offset == end) {\n return simplifiedOffset;\n }\n // snap the first coordinate (P1)\n var x1 = snap(flatCoordinates[offset], tolerance);\n var y1 = snap(flatCoordinates[offset + 1], tolerance);\n offset += stride;\n // add the first coordinate to the output\n simplifiedFlatCoordinates[simplifiedOffset++] = x1;\n simplifiedFlatCoordinates[simplifiedOffset++] = y1;\n // find the next coordinate that does not snap to the same value as the first\n // coordinate (P2)\n var x2, y2;\n do {\n x2 = snap(flatCoordinates[offset], tolerance);\n y2 = snap(flatCoordinates[offset + 1], tolerance);\n offset += stride;\n if (offset == end) {\n // all coordinates snap to the same value, the line collapses to a point\n // push the last snapped value anyway to ensure that the output contains\n // at least two points\n // FIXME should we really return at least two points anyway?\n simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n return simplifiedOffset;\n }\n } while (x2 == x1 && y2 == y1);\n while (offset < end) {\n // snap the next coordinate (P3)\n var x3 = snap(flatCoordinates[offset], tolerance);\n var y3 = snap(flatCoordinates[offset + 1], tolerance);\n offset += stride;\n // skip P3 if it is equal to P2\n if (x3 == x2 && y3 == y2) {\n continue;\n }\n // calculate the delta between P1 and P2\n var dx1 = x2 - x1;\n var dy1 = y2 - y1;\n // calculate the delta between P3 and P1\n var dx2 = x3 - x1;\n var dy2 = y3 - y1;\n // if P1, P2, and P3 are colinear and P3 is further from P1 than P2 is from\n // P1 in the same direction then P2 is on the straight line between P1 and\n // P3\n if ((dx1 * dy2 == dy1 * dx2) &&\n ((dx1 < 0 && dx2 < dx1) || dx1 == dx2 || (dx1 > 0 && dx2 > dx1)) &&\n ((dy1 < 0 && dy2 < dy1) || dy1 == dy2 || (dy1 > 0 && dy2 > dy1))) {\n // discard P2 and set P2 = P3\n x2 = x3;\n y2 = y3;\n continue;\n }\n // either P1, P2, and P3 are not colinear, or they are colinear but P3 is\n // between P3 and P1 or on the opposite half of the line to P2. add P2,\n // and continue with P1 = P2 and P2 = P3\n simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n x1 = x2;\n y1 = y2;\n x2 = x3;\n y2 = y3;\n }\n // add the last point (P2)\n simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n return simplifiedOffset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<number>} simplifiedEnds Simplified ends.\n * @return {number} Simplified offset.\n */\nexport function quantizeArray(\n flatCoordinates, offset, ends, stride,\n tolerance,\n simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n simplifiedOffset = quantize(\n flatCoordinates, offset, end, stride,\n tolerance,\n simplifiedFlatCoordinates, simplifiedOffset);\n simplifiedEnds.push(simplifiedOffset);\n offset = end;\n }\n return simplifiedOffset;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<Array<number>>} simplifiedEndss Simplified endss.\n * @return {number} Simplified offset.\n */\nexport function quantizeMultiArray(\n flatCoordinates, offset, endss, stride,\n tolerance,\n simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n var simplifiedEnds = [];\n simplifiedOffset = quantizeArray(\n flatCoordinates, offset, ends, stride,\n tolerance,\n simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);\n simplifiedEndss.push(simplifiedEnds);\n offset = ends[ends.length - 1];\n }\n return simplifiedOffset;\n}\n\n//# sourceMappingURL=simplify.js.map","/**\n * @module ol/geom/LinearRing\n */\nimport {closestSquaredDistanceXY} from '../extent.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport GeometryType from './GeometryType.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport {linearRing as linearRingArea} from './flat/area.js';\nimport {assignClosestPoint, maxSquaredDelta} from './flat/closest.js';\nimport {deflateCoordinates} from './flat/deflate.js';\nimport {inflateCoordinates} from './flat/inflate.js';\nimport {douglasPeucker} from './flat/simplify.js';\n\n/**\n * @classdesc\n * Linear ring geometry. Only used as part of polygon; cannot be rendered\n * on its own.\n *\n * @api\n */\nvar LinearRing = /*@__PURE__*/(function (SimpleGeometry) {\n function LinearRing(coordinates, opt_layout) {\n\n SimpleGeometry.call(this);\n\n /**\n * @private\n * @type {number}\n */\n this.maxDelta_ = -1;\n\n /**\n * @private\n * @type {number}\n */\n this.maxDeltaRevision_ = -1;\n\n if (opt_layout !== undefined && !Array.isArray(coordinates[0])) {\n this.setFlatCoordinates(opt_layout, /** @type {Array<number>} */ (coordinates));\n } else {\n this.setCoordinates(/** @type {Array<import(\"../coordinate.js\").Coordinate>} */ (coordinates), opt_layout);\n }\n\n }\n\n if ( SimpleGeometry ) LinearRing.__proto__ = SimpleGeometry;\n LinearRing.prototype = Object.create( SimpleGeometry && SimpleGeometry.prototype );\n LinearRing.prototype.constructor = LinearRing;\n\n /**\n * Make a complete copy of the geometry.\n * @return {!LinearRing} Clone.\n * @override\n * @api\n */\n LinearRing.prototype.clone = function clone () {\n return new LinearRing(this.flatCoordinates.slice(), this.layout);\n };\n\n /**\n * @inheritDoc\n */\n LinearRing.prototype.closestPointXY = function closestPointXY (x, y, closestPoint, minSquaredDistance) {\n if (minSquaredDistance < closestSquaredDistanceXY(this.getExtent(), x, y)) {\n return minSquaredDistance;\n }\n if (this.maxDeltaRevision_ != this.getRevision()) {\n this.maxDelta_ = Math.sqrt(maxSquaredDelta(\n this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));\n this.maxDeltaRevision_ = this.getRevision();\n }\n return assignClosestPoint(\n this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,\n this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);\n };\n\n /**\n * Return the area of the linear ring on projected plane.\n * @return {number} Area (on projected plane).\n * @api\n */\n LinearRing.prototype.getArea = function getArea () {\n return linearRingArea(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n };\n\n /**\n * Return the coordinates of the linear ring.\n * @return {Array<import(\"../coordinate.js\").Coordinate>} Coordinates.\n * @override\n * @api\n */\n LinearRing.prototype.getCoordinates = function getCoordinates () {\n return inflateCoordinates(\n this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n };\n\n /**\n * @inheritDoc\n */\n LinearRing.prototype.getSimplifiedGeometryInternal = function getSimplifiedGeometryInternal (squaredTolerance) {\n var simplifiedFlatCoordinates = [];\n simplifiedFlatCoordinates.length = douglasPeucker(\n this.flatCoordinates, 0, this.flatCoordinates.length, this.stride,\n squaredTolerance, simplifiedFlatCoordinates, 0);\n return new LinearRing(simplifiedFlatCoordinates, GeometryLayout.XY);\n };\n\n /**\n * @inheritDoc\n * @api\n */\n LinearRing.prototype.getType = function getType () {\n return GeometryType.LINEAR_RING;\n };\n\n /**\n * @inheritDoc\n */\n LinearRing.prototype.intersectsExtent = function intersectsExtent (extent) {\n return false;\n };\n\n /**\n * Set the coordinates of the linear ring.\n * @param {!Array<import(\"../coordinate.js\").Coordinate>} coordinates Coordinates.\n * @param {GeometryLayout=} opt_layout Layout.\n * @override\n * @api\n */\n LinearRing.prototype.setCoordinates = function setCoordinates (coordinates, opt_layout) {\n this.setLayout(opt_layout, coordinates, 1);\n if (!this.flatCoordinates) {\n this.flatCoordinates = [];\n }\n this.flatCoordinates.length = deflateCoordinates(\n this.flatCoordinates, 0, coordinates, this.stride);\n this.changed();\n };\n\n return LinearRing;\n}(SimpleGeometry));\n\n\nexport default LinearRing;\n\n//# sourceMappingURL=LinearRing.js.map","/**\n * @module ol/geom/Point\n */\nimport {createOrUpdateFromCoordinate, containsXY} from '../extent.js';\nimport GeometryType from './GeometryType.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport {deflateCoordinate} from './flat/deflate.js';\nimport {squaredDistance as squaredDx} from '../math.js';\n\n/**\n * @classdesc\n * Point geometry.\n *\n * @api\n */\nvar Point = /*@__PURE__*/(function (SimpleGeometry) {\n function Point(coordinates, opt_layout) {\n SimpleGeometry.call(this);\n this.setCoordinates(coordinates, opt_layout);\n }\n\n if ( SimpleGeometry ) Point.__proto__ = SimpleGeometry;\n Point.prototype = Object.create( SimpleGeometry && SimpleGeometry.prototype );\n Point.prototype.constructor = Point;\n\n /**\n * Make a complete copy of the geometry.\n * @return {!Point} Clone.\n * @override\n * @api\n */\n Point.prototype.clone = function clone () {\n var point = new Point(this.flatCoordinates.slice(), this.layout);\n return point;\n };\n\n /**\n * @inheritDoc\n */\n Point.prototype.closestPointXY = function closestPointXY (x, y, closestPoint, minSquaredDistance) {\n var flatCoordinates = this.flatCoordinates;\n var squaredDistance = squaredDx(x, y, flatCoordinates[0], flatCoordinates[1]);\n if (squaredDistance < minSquaredDistance) {\n var stride = this.stride;\n for (var i = 0; i < stride; ++i) {\n closestPoint[i] = flatCoordinates[i];\n }\n closestPoint.length = stride;\n return squaredDistance;\n } else {\n return minSquaredDistance;\n }\n };\n\n /**\n * Return the coordinate of the point.\n * @return {import(\"../coordinate.js\").Coordinate} Coordinates.\n * @override\n * @api\n */\n Point.prototype.getCoordinates = function getCoordinates () {\n return !this.flatCoordinates ? [] : this.flatCoordinates.slice();\n };\n\n /**\n * @inheritDoc\n */\n Point.prototype.computeExtent = function computeExtent (extent) {\n return createOrUpdateFromCoordinate(this.flatCoordinates, extent);\n };\n\n /**\n * @inheritDoc\n * @api\n */\n Point.prototype.getType = function getType () {\n return GeometryType.POINT;\n };\n\n /**\n * @inheritDoc\n * @api\n */\n Point.prototype.intersectsExtent = function intersectsExtent (extent) {\n return containsXY(extent, this.flatCoordinates[0], this.flatCoordinates[1]);\n };\n\n /**\n * @inheritDoc\n * @api\n */\n Point.prototype.setCoordinates = function setCoordinates (coordinates, opt_layout) {\n this.setLayout(opt_layout, coordinates, 0);\n if (!this.flatCoordinates) {\n this.flatCoordinates = [];\n }\n this.flatCoordinates.length = deflateCoordinate(\n this.flatCoordinates, 0, coordinates, this.stride);\n this.changed();\n };\n\n return Point;\n}(SimpleGeometry));\n\n\nexport default Point;\n\n//# sourceMappingURL=Point.js.map","/**\n * @module ol/geom/flat/contains\n */\nimport {forEachCorner} from '../../extent.js';\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} Contains extent.\n */\nexport function linearRingContainsExtent(flatCoordinates, offset, end, stride, extent) {\n var outside = forEachCorner(extent,\n /**\n * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n * @return {boolean} Contains (x, y).\n */\n function(coordinate) {\n return !linearRingContainsXY(flatCoordinates, offset, end, stride, coordinate[0], coordinate[1]);\n });\n return !outside;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingContainsXY(flatCoordinates, offset, end, stride, x, y) {\n // http://geomalgorithms.com/a03-_inclusion.html\n // Copyright 2000 softSurfer, 2012 Dan Sunday\n // This code may be freely used and modified for any purpose\n // providing that this copyright notice is included with it.\n // SoftSurfer makes no warranty for this code, and cannot be held\n // liable for any real or imagined damage resulting from its use.\n // Users of this code must verify correctness for their application.\n var wn = 0;\n var x1 = flatCoordinates[end - stride];\n var y1 = flatCoordinates[end - stride + 1];\n for (; offset < end; offset += stride) {\n var x2 = flatCoordinates[offset];\n var y2 = flatCoordinates[offset + 1];\n if (y1 <= y) {\n if (y2 > y && ((x2 - x1) * (y - y1)) - ((x - x1) * (y2 - y1)) > 0) {\n wn++;\n }\n } else if (y2 <= y && ((x2 - x1) * (y - y1)) - ((x - x1) * (y2 - y1)) < 0) {\n wn--;\n }\n x1 = x2;\n y1 = y2;\n }\n return wn !== 0;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y) {\n if (ends.length === 0) {\n return false;\n }\n if (!linearRingContainsXY(flatCoordinates, offset, ends[0], stride, x, y)) {\n return false;\n }\n for (var i = 1, ii = ends.length; i < ii; ++i) {\n if (linearRingContainsXY(flatCoordinates, ends[i - 1], ends[i], stride, x, y)) {\n return false;\n }\n }\n return true;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingssContainsXY(flatCoordinates, offset, endss, stride, x, y) {\n if (endss.length === 0) {\n return false;\n }\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n if (linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y)) {\n return true;\n }\n offset = ends[ends.length - 1];\n }\n return false;\n}\n\n//# sourceMappingURL=contains.js.map","/**\n * @module ol/geom/flat/interiorpoint\n */\nimport {numberSafeCompareFunction} from '../../array.js';\nimport {linearRingsContainsXY} from './contains.js';\n\n\n/**\n * Calculates a point that is likely to lie in the interior of the linear rings.\n * Inspired by JTS's com.vividsolutions.jts.geom.Geometry#getInteriorPoint.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {Array<number>} flatCenters Flat centers.\n * @param {number} flatCentersOffset Flat center offset.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Destination point as XYM coordinate, where M is the\n * length of the horizontal intersection that the point belongs to.\n */\nexport function getInteriorPointOfArray(flatCoordinates, offset,\n ends, stride, flatCenters, flatCentersOffset, opt_dest) {\n var i, ii, x, x1, x2, y1, y2;\n var y = flatCenters[flatCentersOffset + 1];\n /** @type {Array<number>} */\n var intersections = [];\n // Calculate intersections with the horizontal line\n for (var r = 0, rr = ends.length; r < rr; ++r) {\n var end = ends[r];\n x1 = flatCoordinates[end - stride];\n y1 = flatCoordinates[end - stride + 1];\n for (i = offset; i < end; i += stride) {\n x2 = flatCoordinates[i];\n y2 = flatCoordinates[i + 1];\n if ((y <= y1 && y2 <= y) || (y1 <= y && y <= y2)) {\n x = (y - y1) / (y2 - y1) * (x2 - x1) + x1;\n intersections.push(x);\n }\n x1 = x2;\n y1 = y2;\n }\n }\n // Find the longest segment of the horizontal line that has its center point\n // inside the linear ring.\n var pointX = NaN;\n var maxSegmentLength = -Infinity;\n intersections.sort(numberSafeCompareFunction);\n x1 = intersections[0];\n for (i = 1, ii = intersections.length; i < ii; ++i) {\n x2 = intersections[i];\n var segmentLength = Math.abs(x2 - x1);\n if (segmentLength > maxSegmentLength) {\n x = (x1 + x2) / 2;\n if (linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y)) {\n pointX = x;\n maxSegmentLength = segmentLength;\n }\n }\n x1 = x2;\n }\n if (isNaN(pointX)) {\n // There is no horizontal line that has its center point inside the linear\n // ring. Use the center of the the linear ring's extent.\n pointX = flatCenters[flatCentersOffset];\n }\n if (opt_dest) {\n opt_dest.push(pointX, y, maxSegmentLength);\n return opt_dest;\n } else {\n return [pointX, y, maxSegmentLength];\n }\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {Array<number>} flatCenters Flat centers.\n * @return {Array<number>} Interior points as XYM coordinates, where M is the\n * length of the horizontal intersection that the point belongs to.\n */\nexport function getInteriorPointsOfMultiArray(flatCoordinates, offset, endss, stride, flatCenters) {\n var interiorPoints = [];\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n interiorPoints = getInteriorPointOfArray(flatCoordinates,\n offset, ends, stride, flatCenters, 2 * i, interiorPoints);\n offset = ends[ends.length - 1];\n }\n return interiorPoints;\n}\n\n//# sourceMappingURL=interiorpoint.js.map","/**\n * @module ol/geom/flat/segments\n */\n\n\n/**\n * This function calls `callback` for each segment of the flat coordinates\n * array. If the callback returns a truthy value the function returns that\n * value immediately. Otherwise the function returns `false`.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {function(this: S, import(\"../../coordinate.js\").Coordinate, import(\"../../coordinate.js\").Coordinate): T} callback Function\n * called for each segment.\n * @param {S=} opt_this The object to be used as the value of 'this'\n * within callback.\n * @return {T|boolean} Value.\n * @template T,S\n */\nexport function forEach(flatCoordinates, offset, end, stride, callback, opt_this) {\n var point1 = [flatCoordinates[offset], flatCoordinates[offset + 1]];\n var point2 = [];\n var ret;\n for (; (offset + stride) < end; offset += stride) {\n point2[0] = flatCoordinates[offset + stride];\n point2[1] = flatCoordinates[offset + stride + 1];\n ret = callback.call(opt_this, point1, point2);\n if (ret) {\n return ret;\n }\n point1[0] = point2[0];\n point1[1] = point2[1];\n }\n return false;\n}\n\n//# sourceMappingURL=segments.js.map","/**\n * @module ol/geom/flat/intersectsextent\n */\nimport {containsExtent, createEmpty, extendFlatCoordinates, intersects, intersectsSegment} from '../../extent.js';\nimport {linearRingContainsXY, linearRingContainsExtent} from './contains.js';\nimport {forEach as forEachSegment} from './segments.js';\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLineString(flatCoordinates, offset, end, stride, extent) {\n var coordinatesExtent = extendFlatCoordinates(\n createEmpty(), flatCoordinates, offset, end, stride);\n if (!intersects(extent, coordinatesExtent)) {\n return false;\n }\n if (containsExtent(extent, coordinatesExtent)) {\n return true;\n }\n if (coordinatesExtent[0] >= extent[0] &&\n coordinatesExtent[2] <= extent[2]) {\n return true;\n }\n if (coordinatesExtent[1] >= extent[1] &&\n coordinatesExtent[3] <= extent[3]) {\n return true;\n }\n return forEachSegment(flatCoordinates, offset, end, stride,\n /**\n * @param {import(\"../../coordinate.js\").Coordinate} point1 Start point.\n * @param {import(\"../../coordinate.js\").Coordinate} point2 End point.\n * @return {boolean} `true` if the segment and the extent intersect,\n * `false` otherwise.\n */\n function(point1, point2) {\n return intersectsSegment(extent, point1, point2);\n });\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLineStringArray(flatCoordinates, offset, ends, stride, extent) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n if (intersectsLineString(\n flatCoordinates, offset, ends[i], stride, extent)) {\n return true;\n }\n offset = ends[i];\n }\n return false;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRing(flatCoordinates, offset, end, stride, extent) {\n if (intersectsLineString(\n flatCoordinates, offset, end, stride, extent)) {\n return true;\n }\n if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[0], extent[1])) {\n return true;\n }\n if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[0], extent[3])) {\n return true;\n }\n if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[2], extent[1])) {\n return true;\n }\n if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[2], extent[3])) {\n return true;\n }\n return false;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRingArray(flatCoordinates, offset, ends, stride, extent) {\n if (!intersectsLinearRing(\n flatCoordinates, offset, ends[0], stride, extent)) {\n return false;\n }\n if (ends.length === 1) {\n return true;\n }\n for (var i = 1, ii = ends.length; i < ii; ++i) {\n if (linearRingContainsExtent(flatCoordinates, ends[i - 1], ends[i], stride, extent)) {\n if (!intersectsLineString(flatCoordinates, ends[i - 1], ends[i], stride, extent)) {\n return false;\n }\n }\n }\n return true;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRingMultiArray(flatCoordinates, offset, endss, stride, extent) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n if (intersectsLinearRingArray(\n flatCoordinates, offset, ends, stride, extent)) {\n return true;\n }\n offset = ends[ends.length - 1];\n }\n return false;\n}\n\n//# sourceMappingURL=intersectsextent.js.map","/**\n * @module ol/geom/flat/reverse\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n */\nexport function coordinates(flatCoordinates, offset, end, stride) {\n while (offset < end - stride) {\n for (var i = 0; i < stride; ++i) {\n var tmp = flatCoordinates[offset + i];\n flatCoordinates[offset + i] = flatCoordinates[end - stride + i];\n flatCoordinates[end - stride + i] = tmp;\n }\n offset += stride;\n end -= stride;\n }\n}\n\n//# sourceMappingURL=reverse.js.map","/**\n * @module ol/geom/flat/orient\n */\nimport {coordinates as reverseCoordinates} from './reverse.js';\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {boolean} Is clockwise.\n */\nexport function linearRingIsClockwise(flatCoordinates, offset, end, stride) {\n // http://tinyurl.com/clockwise-method\n // https://github.com/OSGeo/gdal/blob/trunk/gdal/ogr/ogrlinearring.cpp\n var edge = 0;\n var x1 = flatCoordinates[end - stride];\n var y1 = flatCoordinates[end - stride + 1];\n for (; offset < end; offset += stride) {\n var x2 = flatCoordinates[offset];\n var y2 = flatCoordinates[offset + 1];\n edge += (x2 - x1) * (y2 + y1);\n x1 = x2;\n y1 = y2;\n }\n return edge > 0;\n}\n\n\n/**\n * Determines if linear rings are oriented. By default, left-hand orientation\n * is tested (first ring must be clockwise, remaining rings counter-clockwise).\n * To test for right-hand orientation, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Test for right-hand orientation\n * (counter-clockwise exterior ring and clockwise interior rings).\n * @return {boolean} Rings are correctly oriented.\n */\nexport function linearRingIsOriented(flatCoordinates, offset, ends, stride, opt_right) {\n var right = opt_right !== undefined ? opt_right : false;\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n var isClockwise = linearRingIsClockwise(\n flatCoordinates, offset, end, stride);\n if (i === 0) {\n if ((right && isClockwise) || (!right && !isClockwise)) {\n return false;\n }\n } else {\n if ((right && !isClockwise) || (!right && isClockwise)) {\n return false;\n }\n }\n offset = end;\n }\n return true;\n}\n\n\n/**\n * Determines if linear rings are oriented. By default, left-hand orientation\n * is tested (first ring must be clockwise, remaining rings counter-clockwise).\n * To test for right-hand orientation, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Array of array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Test for right-hand orientation\n * (counter-clockwise exterior ring and clockwise interior rings).\n * @return {boolean} Rings are correctly oriented.\n */\nexport function linearRingsAreOriented(flatCoordinates, offset, endss, stride, opt_right) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n if (!linearRingIsOriented(\n flatCoordinates, offset, endss[i], stride, opt_right)) {\n return false;\n }\n }\n return true;\n}\n\n\n/**\n * Orient coordinates in a flat array of linear rings. By default, rings\n * are oriented following the left-hand rule (clockwise for exterior and\n * counter-clockwise for interior rings). To orient according to the\n * right-hand rule, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Follow the right-hand rule for orientation.\n * @return {number} End.\n */\nexport function orientLinearRings(flatCoordinates, offset, ends, stride, opt_right) {\n var right = opt_right !== undefined ? opt_right : false;\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n var isClockwise = linearRingIsClockwise(\n flatCoordinates, offset, end, stride);\n var reverse = i === 0 ?\n (right && isClockwise) || (!right && !isClockwise) :\n (right && !isClockwise) || (!right && isClockwise);\n if (reverse) {\n reverseCoordinates(flatCoordinates, offset, end, stride);\n }\n offset = end;\n }\n return offset;\n}\n\n\n/**\n * Orient coordinates in a flat array of linear rings. By default, rings\n * are oriented following the left-hand rule (clockwise for exterior and\n * counter-clockwise for interior rings). To orient according to the\n * right-hand rule, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Array of array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Follow the right-hand rule for orientation.\n * @return {number} End.\n */\nexport function orientLinearRingsArray(flatCoordinates, offset, endss, stride, opt_right) {\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n offset = orientLinearRings(\n flatCoordinates, offset, endss[i], stride, opt_right);\n }\n return offset;\n}\n\n//# sourceMappingURL=orient.js.map","/**\n * @module ol/geom/Polygon\n */\nimport {extend} from '../array.js';\nimport {closestSquaredDistanceXY, getCenter} from '../extent.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport GeometryType from './GeometryType.js';\nimport LinearRing from './LinearRing.js';\nimport Point from './Point.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport {offset as sphereOffset} from '../sphere.js';\nimport {linearRings as linearRingsArea} from './flat/area.js';\nimport {assignClosestArrayPoint, arrayMaxSquaredDelta} from './flat/closest.js';\nimport {linearRingsContainsXY} from './flat/contains.js';\nimport {deflateCoordinatesArray} from './flat/deflate.js';\nimport {inflateCoordinatesArray} from './flat/inflate.js';\nimport {getInteriorPointOfArray} from './flat/interiorpoint.js';\nimport {intersectsLinearRingArray} from './flat/intersectsextent.js';\nimport {linearRingIsOriented, orientLinearRings} from './flat/orient.js';\nimport {quantizeArray} from './flat/simplify.js';\nimport {modulo} from '../math.js';\n\n/**\n * @classdesc\n * Polygon geometry.\n *\n * @api\n */\nvar Polygon = /*@__PURE__*/(function (SimpleGeometry) {\n function Polygon(coordinates, opt_layout, opt_ends) {\n\n SimpleGeometry.call(this);\n\n /**\n * @type {Array<number>}\n * @private\n */\n this.ends_ = [];\n\n /**\n * @private\n * @type {number}\n */\n this.flatInteriorPointRevision_ = -1;\n\n /**\n * @private\n * @type {import(\"../coordinate.js\").Coordinate}\n */\n this.flatInteriorPoint_ = null;\n\n /**\n * @private\n * @type {number}\n */\n this.maxDelta_ = -1;\n\n /**\n * @private\n * @type {number}\n */\n this.maxDeltaRevision_ = -1;\n\n /**\n * @private\n * @type {number}\n */\n this.orientedRevision_ = -1;\n\n /**\n * @private\n * @type {Array<number>}\n */\n this.orientedFlatCoordinates_ = null;\n\n if (opt_layout !== undefined && opt_ends) {\n this.setFlatCoordinates(opt_layout, /** @type {Array<number>} */ (coordinates));\n this.ends_ = opt_ends;\n } else {\n this.setCoordinates(/** @type {Array<Array<import(\"../coordinate.js\").Coordinate>>} */ (coordinates), opt_layout);\n }\n\n }\n\n if ( SimpleGeometry ) Polygon.__proto__ = SimpleGeometry;\n Polygon.prototype = Object.create( SimpleGeometry && SimpleGeometry.prototype );\n Polygon.prototype.constructor = Polygon;\n\n /**\n * Append the passed linear ring to this polygon.\n * @param {LinearRing} linearRing Linear ring.\n * @api\n */\n Polygon.prototype.appendLinearRing = function appendLinearRing (linearRing) {\n if (!this.flatCoordinates) {\n this.flatCoordinates = linearRing.getFlatCoordinates().slice();\n } else {\n extend(this.flatCoordinates, linearRing.getFlatCoordinates());\n }\n this.ends_.push(this.flatCoordinates.length);\n this.changed();\n };\n\n /**\n * Make a complete copy of the geometry.\n * @return {!Polygon} Clone.\n * @override\n * @api\n */\n Polygon.prototype.clone = function clone () {\n return new Polygon(this.flatCoordinates.slice(), this.layout, this.ends_.slice());\n };\n\n /**\n * @inheritDoc\n */\n Polygon.prototype.closestPointXY = function closestPointXY (x, y, closestPoint, minSquaredDistance) {\n if (minSquaredDistance < closestSquaredDistanceXY(this.getExtent(), x, y)) {\n return minSquaredDistance;\n }\n if (this.maxDeltaRevision_ != this.getRevision()) {\n this.maxDelta_ = Math.sqrt(arrayMaxSquaredDelta(\n this.flatCoordinates, 0, this.ends_, this.stride, 0));\n this.maxDeltaRevision_ = this.getRevision();\n }\n return assignClosestArrayPoint(\n this.flatCoordinates, 0, this.ends_, this.stride,\n this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);\n };\n\n /**\n * @inheritDoc\n */\n Polygon.prototype.containsXY = function containsXY (x, y) {\n return linearRingsContainsXY(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, x, y);\n };\n\n /**\n * Return the area of the polygon on projected plane.\n * @return {number} Area (on projected plane).\n * @api\n */\n Polygon.prototype.getArea = function getArea () {\n return linearRingsArea(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride);\n };\n\n /**\n * Get the coordinate array for this geometry. This array has the structure\n * of a GeoJSON coordinate array for polygons.\n *\n * @param {boolean=} opt_right Orient coordinates according to the right-hand\n * rule (counter-clockwise for exterior and clockwise for interior rings).\n * If `false`, coordinates will be oriented according to the left-hand rule\n * (clockwise for exterior and counter-clockwise for interior rings).\n * By default, coordinate orientation will depend on how the geometry was\n * constructed.\n * @return {Array<Array<import(\"../coordinate.js\").Coordinate>>} Coordinates.\n * @override\n * @api\n */\n Polygon.prototype.getCoordinates = function getCoordinates (opt_right) {\n var flatCoordinates;\n if (opt_right !== undefined) {\n flatCoordinates = this.getOrientedFlatCoordinates().slice();\n orientLinearRings(\n flatCoordinates, 0, this.ends_, this.stride, opt_right);\n } else {\n flatCoordinates = this.flatCoordinates;\n }\n\n return inflateCoordinatesArray(\n flatCoordinates, 0, this.ends_, this.stride);\n };\n\n /**\n * @return {Array<number>} Ends.\n */\n Polygon.prototype.getEnds = function getEnds () {\n return this.ends_;\n };\n\n /**\n * @return {Array<number>} Interior point.\n */\n Polygon.prototype.getFlatInteriorPoint = function getFlatInteriorPoint () {\n if (this.flatInteriorPointRevision_ != this.getRevision()) {\n var flatCenter = getCenter(this.getExtent());\n this.flatInteriorPoint_ = getInteriorPointOfArray(\n this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride,\n flatCenter, 0);\n this.flatInteriorPointRevision_ = this.getRevision();\n }\n return this.flatInteriorPoint_;\n };\n\n /**\n * Return an interior point of the polygon.\n * @return {Point} Interior point as XYM coordinate, where M is the\n * length of the horizontal intersection that the point belongs to.\n * @api\n */\n Polygon.prototype.getInteriorPoint = function getInteriorPoint () {\n return new Point(this.getFlatInteriorPoint(), GeometryLayout.XYM);\n };\n\n /**\n * Return the number of rings of the polygon, this includes the exterior\n * ring and any interior rings.\n *\n * @return {number} Number of rings.\n * @api\n */\n Polygon.prototype.getLinearRingCount = function getLinearRingCount () {\n return this.ends_.length;\n };\n\n /**\n * Return the Nth linear ring of the polygon geometry. Return `null` if the\n * given index is out of range.\n * The exterior linear ring is available at index `0` and the interior rings\n * at index `1` and beyond.\n *\n * @param {number} index Index.\n * @return {LinearRing} Linear ring.\n * @api\n */\n Polygon.prototype.getLinearRing = function getLinearRing (index) {\n if (index < 0 || this.ends_.length <= index) {\n return null;\n }\n return new LinearRing(this.flatCoordinates.slice(\n index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]), this.layout);\n };\n\n /**\n * Return the linear rings of the polygon.\n * @return {Array<LinearRing>} Linear rings.\n * @api\n */\n Polygon.prototype.getLinearRings = function getLinearRings () {\n var layout = this.layout;\n var flatCoordinates = this.flatCoordinates;\n var ends = this.ends_;\n var linearRings = [];\n var offset = 0;\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n var linearRing = new LinearRing(flatCoordinates.slice(offset, end), layout);\n linearRings.push(linearRing);\n offset = end;\n }\n return linearRings;\n };\n\n /**\n * @return {Array<number>} Oriented flat coordinates.\n */\n Polygon.prototype.getOrientedFlatCoordinates = function getOrientedFlatCoordinates () {\n if (this.orientedRevision_ != this.getRevision()) {\n var flatCoordinates = this.flatCoordinates;\n if (linearRingIsOriented(\n flatCoordinates, 0, this.ends_, this.stride)) {\n this.orientedFlatCoordinates_ = flatCoordinates;\n } else {\n this.orientedFlatCoordinates_ = flatCoordinates.slice();\n this.orientedFlatCoordinates_.length =\n orientLinearRings(\n this.orientedFlatCoordinates_, 0, this.ends_, this.stride);\n }\n this.orientedRevision_ = this.getRevision();\n }\n return this.orientedFlatCoordinates_;\n };\n\n /**\n * @inheritDoc\n */\n Polygon.prototype.getSimplifiedGeometryInternal = function getSimplifiedGeometryInternal (squaredTolerance) {\n var simplifiedFlatCoordinates = [];\n var simplifiedEnds = [];\n simplifiedFlatCoordinates.length = quantizeArray(\n this.flatCoordinates, 0, this.ends_, this.stride,\n Math.sqrt(squaredTolerance),\n simplifiedFlatCoordinates, 0, simplifiedEnds);\n return new Polygon(simplifiedFlatCoordinates, GeometryLayout.XY, simplifiedEnds);\n };\n\n /**\n * @inheritDoc\n * @api\n */\n Polygon.prototype.getType = function getType () {\n return GeometryType.POLYGON;\n };\n\n /**\n * @inheritDoc\n * @api\n */\n Polygon.prototype.intersectsExtent = function intersectsExtent (extent) {\n return intersectsLinearRingArray(\n this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, extent);\n };\n\n /**\n * Set the coordinates of the polygon.\n * @param {!Array<Array<import(\"../coordinate.js\").Coordinate>>} coordinates Coordinates.\n * @param {GeometryLayout=} opt_layout Layout.\n * @override\n * @api\n */\n Polygon.prototype.setCoordinates = function setCoordinates (coordinates, opt_layout) {\n this.setLayout(opt_layout, coordinates, 2);\n if (!this.flatCoordinates) {\n this.flatCoordinates = [];\n }\n var ends = deflateCoordinatesArray(\n this.flatCoordinates, 0, coordinates, this.stride, this.ends_);\n this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];\n this.changed();\n };\n\n return Polygon;\n}(SimpleGeometry));\n\n\nexport default Polygon;\n\n\n/**\n * Create an approximation of a circle on the surface of a sphere.\n * @param {import(\"../coordinate.js\").Coordinate} center Center (`[lon, lat]` in degrees).\n * @param {number} radius The great-circle distance from the center to\n * the polygon vertices.\n * @param {number=} opt_n Optional number of vertices for the resulting\n * polygon. Default is `32`.\n * @param {number=} opt_sphereRadius Optional radius for the sphere (defaults to\n * the Earth's mean radius using the WGS84 ellipsoid).\n * @return {Polygon} The \"circular\" polygon.\n * @api\n */\nexport function circular(center, radius, opt_n, opt_sphereRadius) {\n var n = opt_n ? opt_n : 32;\n /** @type {Array<number>} */\n var flatCoordinates = [];\n for (var i = 0; i < n; ++i) {\n extend(flatCoordinates, sphereOffset(center, radius, 2 * Math.PI * i / n, opt_sphereRadius));\n }\n flatCoordinates.push(flatCoordinates[0], flatCoordinates[1]);\n return new Polygon(flatCoordinates, GeometryLayout.XY, [flatCoordinates.length]);\n}\n\n\n/**\n * Create a polygon from an extent. The layout used is `XY`.\n * @param {import(\"../extent.js\").Extent} extent The extent.\n * @return {Polygon} The polygon.\n * @api\n */\nexport function fromExtent(extent) {\n var minX = extent[0];\n var minY = extent[1];\n var maxX = extent[2];\n var maxY = extent[3];\n var flatCoordinates =\n [minX, minY, minX, maxY, maxX, maxY, maxX, minY, minX, minY];\n return new Polygon(flatCoordinates, GeometryLayout.XY, [flatCoordinates.length]);\n}\n\n\n/**\n * Create a regular polygon from a circle.\n * @param {import(\"./Circle.js\").default} circle Circle geometry.\n * @param {number=} opt_sides Number of sides of the polygon. Default is 32.\n * @param {number=} opt_angle Start angle for the first vertex of the polygon in\n * radians. Default is 0.\n * @return {Polygon} Polygon geometry.\n * @api\n */\nexport function fromCircle(circle, opt_sides, opt_angle) {\n var sides = opt_sides ? opt_sides : 32;\n var stride = circle.getStride();\n var layout = circle.getLayout();\n var center = circle.getCenter();\n var arrayLength = stride * (sides + 1);\n var flatCoordinates = new Array(arrayLength);\n for (var i = 0; i < arrayLength; i += stride) {\n flatCoordinates[i] = 0;\n flatCoordinates[i + 1] = 0;\n for (var j = 2; j < stride; j++) {\n flatCoordinates[i + j] = center[j];\n }\n }\n var ends = [flatCoordinates.length];\n var polygon = new Polygon(flatCoordinates, layout, ends);\n makeRegular(polygon, center, circle.getRadius(), opt_angle);\n return polygon;\n}\n\n\n/**\n * Modify the coordinates of a polygon to make it a regular polygon.\n * @param {Polygon} polygon Polygon geometry.\n * @param {import(\"../coordinate.js\").Coordinate} center Center of the regular polygon.\n * @param {number} radius Radius of the regular polygon.\n * @param {number=} opt_angle Start angle for the first vertex of the polygon in\n * radians. Default is 0.\n */\nexport function makeRegular(polygon, center, radius, opt_angle) {\n var flatCoordinates = polygon.getFlatCoordinates();\n var stride = polygon.getStride();\n var sides = flatCoordinates.length / stride - 1;\n var startAngle = opt_angle ? opt_angle : 0;\n for (var i = 0; i <= sides; ++i) {\n var offset = i * stride;\n var angle = startAngle + (modulo(i, sides) * 2 * Math.PI / sides);\n flatCoordinates[offset] = center[0] + (radius * Math.cos(angle));\n flatCoordinates[offset + 1] = center[1] + (radius * Math.sin(angle));\n }\n polygon.changed();\n}\n\n//# sourceMappingURL=Polygon.js.map","/**\n * @module ol/View\n */\nimport {DEFAULT_TILE_SIZE} from './tilegrid/common.js';\nimport {getUid} from './util.js';\nimport {VOID} from './functions.js';\nimport {createExtent, none as centerNone} from './centerconstraint.js';\nimport BaseObject from './Object.js';\nimport {createSnapToResolutions, createSnapToPower} from './resolutionconstraint.js';\nimport {createSnapToZero, createSnapToN, none as rotationNone, disable} from './rotationconstraint.js';\nimport ViewHint from './ViewHint.js';\nimport ViewProperty from './ViewProperty.js';\nimport {linearFindNearest} from './array.js';\nimport {assert} from './asserts.js';\nimport {add as addCoordinate, rotate as rotateCoordinate, equals as coordinatesEqual} from './coordinate.js';\nimport {inAndOut} from './easing.js';\nimport {getForViewAndSize, getCenter, getHeight, getWidth, isEmpty} from './extent.js';\nimport GeometryType from './geom/GeometryType.js';\nimport {fromExtent as polygonFromExtent} from './geom/Polygon.js';\nimport {clamp, modulo} from './math.js';\nimport {assign} from './obj.js';\nimport {createProjection, METERS_PER_UNIT} from './proj.js';\nimport Units from './proj/Units.js';\n\n\n/**\n * An animation configuration\n *\n * @typedef {Object} Animation\n * @property {import(\"./coordinate.js\").Coordinate} [sourceCenter]\n * @property {import(\"./coordinate.js\").Coordinate} [targetCenter]\n * @property {number} [sourceResolution]\n * @property {number} [targetResolution]\n * @property {number} [sourceRotation]\n * @property {number} [targetRotation]\n * @property {import(\"./coordinate.js\").Coordinate} [anchor]\n * @property {number} start\n * @property {number} duration\n * @property {boolean} complete\n * @property {function(number):number} easing\n * @property {function(boolean)} callback\n */\n\n\n/**\n * @typedef {Object} Constraints\n * @property {import(\"./centerconstraint.js\").Type} center\n * @property {import(\"./resolutionconstraint.js\").Type} resolution\n * @property {import(\"./rotationconstraint.js\").Type} rotation\n */\n\n\n/**\n * @typedef {Object} FitOptions\n * @property {import(\"./size.js\").Size} [size] The size in pixels of the box to fit\n * the extent into. Default is the current size of the first map in the DOM that\n * uses this view, or `[100, 100]` if no such map is found.\n * @property {!Array<number>} [padding=[0, 0, 0, 0]] Padding (in pixels) to be\n * cleared inside the view. Values in the array are top, right, bottom and left\n * padding.\n * @property {boolean} [constrainResolution=true] Constrain the resolution.\n * @property {boolean} [nearest=false] If `constrainResolution` is `true`, get\n * the nearest extent instead of the closest that actually fits the view.\n * @property {number} [minResolution=0] Minimum resolution that we zoom to.\n * @property {number} [maxZoom] Maximum zoom level that we zoom to. If\n * `minResolution` is given, this property is ignored.\n * @property {number} [duration] The duration of the animation in milliseconds.\n * By default, there is no animation to the target extent.\n * @property {function(number):number} [easing] The easing function used during\n * the animation (defaults to {@link module:ol/easing~inAndOut}).\n * The function will be called for each frame with a number representing a\n * fraction of the animation's duration. The function should return a number\n * between 0 and 1 representing the progress toward the destination state.\n * @property {function(boolean)} [callback] Function called when the view is in\n * its final position. The callback will be called with `true` if the animation\n * series completed on its own or `false` if it was cancelled.\n */\n\n\n/**\n * @typedef {Object} ViewOptions\n * @property {import(\"./coordinate.js\").Coordinate} [center] The initial center for\n * the view. The coordinate system for the center is specified with the\n * `projection` option. Layer sources will not be fetched if this is not set,\n * but the center can be set later with {@link #setCenter}.\n * @property {boolean|number} [constrainRotation=true] Rotation constraint.\n * `false` means no constraint. `true` means no constraint, but snap to zero\n * near zero. A number constrains the rotation to that number of values. For\n * example, `4` will constrain the rotation to 0, 90, 180, and 270 degrees.\n * @property {boolean} [enableRotation=true] Enable rotation.\n * If `false`, a rotation constraint that always sets the rotation to zero is\n * used. The `constrainRotation` option has no effect if `enableRotation` is\n * `false`.\n * @property {import(\"./extent.js\").Extent} [extent] The extent that constrains the\n * center, in other words, center cannot be set outside this extent.\n * @property {number} [maxResolution] The maximum resolution used to determine\n * the resolution constraint. It is used together with `minResolution` (or\n * `maxZoom`) and `zoomFactor`. If unspecified it is calculated in such a way\n * that the projection's validity extent fits in a 256x256 px tile. If the\n * projection is Spherical Mercator (the default) then `maxResolution` defaults\n * to `40075016.68557849 / 256 = 156543.03392804097`.\n * @property {number} [minResolution] The minimum resolution used to determine\n * the resolution constraint. It is used together with `maxResolution` (or\n * `minZoom`) and `zoomFactor`. If unspecified it is calculated assuming 29\n * zoom levels (with a factor of 2). If the projection is Spherical Mercator\n * (the default) then `minResolution` defaults to\n * `40075016.68557849 / 256 / Math.pow(2, 28) = 0.0005831682455839253`.\n * @property {number} [maxZoom=28] The maximum zoom level used to determine the\n * resolution constraint. It is used together with `minZoom` (or\n * `maxResolution`) and `zoomFactor`. Note that if `minResolution` is also\n * provided, it is given precedence over `maxZoom`.\n * @property {number} [minZoom=0] The minimum zoom level used to determine the\n * resolution constraint. It is used together with `maxZoom` (or\n * `minResolution`) and `zoomFactor`. Note that if `maxResolution` is also\n * provided, it is given precedence over `minZoom`.\n * @property {import(\"./proj.js\").ProjectionLike} [projection='EPSG:3857'] The\n * projection. The default is Spherical Mercator.\n * @property {number} [resolution] The initial resolution for the view. The\n * units are `projection` units per pixel (e.g. meters per pixel). An\n * alternative to setting this is to set `zoom`. Layer sources will not be\n * fetched if neither this nor `zoom` are defined, but they can be set later\n * with {@link #setZoom} or {@link #setResolution}.\n * @property {Array<number>} [resolutions] Resolutions to determine the\n * resolution constraint. If set the `maxResolution`, `minResolution`,\n * `minZoom`, `maxZoom`, and `zoomFactor` options are ignored.\n * @property {number} [rotation=0] The initial rotation for the view in radians\n * (positive rotation clockwise, 0 means North).\n * @property {number} [zoom] Only used if `resolution` is not defined. Zoom\n * level used to calculate the initial resolution for the view. The initial\n * resolution is determined using the {@link #constrainResolution} method.\n * @property {number} [zoomFactor=2] The zoom factor used to determine the\n * resolution constraint.\n */\n\n\n/**\n * @typedef {Object} AnimationOptions\n * @property {import(\"./coordinate.js\").Coordinate} [center] The center of the view at the end of\n * the animation.\n * @property {number} [zoom] The zoom level of the view at the end of the\n * animation. This takes precedence over `resolution`.\n * @property {number} [resolution] The resolution of the view at the end\n * of the animation. If `zoom` is also provided, this option will be ignored.\n * @property {number} [rotation] The rotation of the view at the end of\n * the animation.\n * @property {import(\"./coordinate.js\").Coordinate} [anchor] Optional anchor to remained fixed\n * during a rotation or resolution animation.\n * @property {number} [duration=1000] The duration of the animation in milliseconds.\n * @property {function(number):number} [easing] The easing function used\n * during the animation (defaults to {@link module:ol/easing~inAndOut}).\n * The function will be called for each frame with a number representing a\n * fraction of the animation's duration. The function should return a number\n * between 0 and 1 representing the progress toward the destination state.\n */\n\n\n/**\n * @typedef {Object} State\n * @property {import(\"./coordinate.js\").Coordinate} center\n * @property {import(\"./proj/Projection.js\").default} projection\n * @property {number} resolution\n * @property {number} rotation\n * @property {number} zoom\n */\n\n\n/**\n * Default min zoom level for the map view.\n * @type {number}\n */\nvar DEFAULT_MIN_ZOOM = 0;\n\n\n/**\n * @classdesc\n * A View object represents a simple 2D view of the map.\n *\n * This is the object to act upon to change the center, resolution,\n * and rotation of the map.\n *\n * ### The view states\n *\n * An View is determined by three states: `center`, `resolution`,\n * and `rotation`. Each state has a corresponding getter and setter, e.g.\n * `getCenter` and `setCenter` for the `center` state.\n *\n * An View has a `projection`. The projection determines the\n * coordinate system of the center, and its units determine the units of the\n * resolution (projection units per pixel). The default projection is\n * Spherical Mercator (EPSG:3857).\n *\n * ### The constraints\n *\n * `setCenter`, `setResolution` and `setRotation` can be used to change the\n * states of the view. Any value can be passed to the setters. And the value\n * that is passed to a setter will effectively be the value set in the view,\n * and returned by the corresponding getter.\n *\n * But a View object also has a *resolution constraint*, a\n * *rotation constraint* and a *center constraint*.\n *\n * As said above, no constraints are applied when the setters are used to set\n * new states for the view. Applying constraints is done explicitly through\n * the use of the `constrain*` functions (`constrainResolution` and\n * `constrainRotation` and `constrainCenter`).\n *\n * The main users of the constraints are the interactions and the\n * controls. For example, double-clicking on the map changes the view to\n * the \"next\" resolution. And releasing the fingers after pinch-zooming\n * snaps to the closest resolution (with an animation).\n *\n * The *resolution constraint* snaps to specific resolutions. It is\n * determined by the following options: `resolutions`, `maxResolution`,\n * `maxZoom`, and `zoomFactor`. If `resolutions` is set, the other three\n * options are ignored. See documentation for each option for more\n * information.\n *\n * The *rotation constraint* snaps to specific angles. It is determined\n * by the following options: `enableRotation` and `constrainRotation`.\n * By default the rotation value is snapped to zero when approaching the\n * horizontal.\n *\n * The *center constraint* is determined by the `extent` option. By\n * default the center is not constrained at all.\n *\n * @api\n */\nvar View = /*@__PURE__*/(function (BaseObject) {\n function View(opt_options) {\n BaseObject.call(this);\n\n var options = assign({}, opt_options);\n\n /**\n * @private\n * @type {Array<number>}\n */\n this.hints_ = [0, 0];\n\n /**\n * @private\n * @type {Array<Array<Animation>>}\n */\n this.animations_ = [];\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.updateAnimationKey_;\n\n this.updateAnimations_ = this.updateAnimations_.bind(this);\n\n /**\n * @private\n * @const\n * @type {import(\"./proj/Projection.js\").default}\n */\n this.projection_ = createProjection(options.projection, 'EPSG:3857');\n\n this.applyOptions_(options);\n }\n\n if ( BaseObject ) View.__proto__ = BaseObject;\n View.prototype = Object.create( BaseObject && BaseObject.prototype );\n View.prototype.constructor = View;\n\n /**\n * Set up the view with the given options.\n * @param {ViewOptions} options View options.\n */\n View.prototype.applyOptions_ = function applyOptions_ (options) {\n\n /**\n * @type {Object<string, *>}\n */\n var properties = {};\n properties[ViewProperty.CENTER] = options.center !== undefined ?\n options.center : null;\n\n var resolutionConstraintInfo = createResolutionConstraint(options);\n\n /**\n * @private\n * @type {number}\n */\n this.maxResolution_ = resolutionConstraintInfo.maxResolution;\n\n /**\n * @private\n * @type {number}\n */\n this.minResolution_ = resolutionConstraintInfo.minResolution;\n\n /**\n * @private\n * @type {number}\n */\n this.zoomFactor_ = resolutionConstraintInfo.zoomFactor;\n\n /**\n * @private\n * @type {Array<number>|undefined}\n */\n this.resolutions_ = options.resolutions;\n\n /**\n * @private\n * @type {number}\n */\n this.minZoom_ = resolutionConstraintInfo.minZoom;\n\n var centerConstraint = createCenterConstraint(options);\n var resolutionConstraint = resolutionConstraintInfo.constraint;\n var rotationConstraint = createRotationConstraint(options);\n\n /**\n * @private\n * @type {Constraints}\n */\n this.constraints_ = {\n center: centerConstraint,\n resolution: resolutionConstraint,\n rotation: rotationConstraint\n };\n\n if (options.resolution !== undefined) {\n properties[ViewProperty.RESOLUTION] = options.resolution;\n } else if (options.zoom !== undefined) {\n properties[ViewProperty.RESOLUTION] = this.constrainResolution(\n this.maxResolution_, options.zoom - this.minZoom_);\n\n if (this.resolutions_) { // in case map zoom is out of min/max zoom range\n properties[ViewProperty.RESOLUTION] = clamp(\n Number(this.getResolution() || properties[ViewProperty.RESOLUTION]),\n this.minResolution_, this.maxResolution_);\n }\n }\n properties[ViewProperty.ROTATION] = options.rotation !== undefined ? options.rotation : 0;\n this.setProperties(properties);\n\n /**\n * @private\n * @type {ViewOptions}\n */\n this.options_ = options;\n\n };\n\n /**\n * Get an updated version of the view options used to construct the view. The\n * current resolution (or zoom), center, and rotation are applied to any stored\n * options. The provided options can be used to apply new min/max zoom or\n * resolution limits.\n * @param {ViewOptions} newOptions New options to be applied.\n * @return {ViewOptions} New options updated with the current view state.\n */\n View.prototype.getUpdatedOptions_ = function getUpdatedOptions_ (newOptions) {\n var options = assign({}, this.options_);\n\n // preserve resolution (or zoom)\n if (options.resolution !== undefined) {\n options.resolution = this.getResolution();\n } else {\n options.zoom = this.getZoom();\n }\n\n // preserve center\n options.center = this.getCenter();\n\n // preserve rotation\n options.rotation = this.getRotation();\n\n return assign({}, options, newOptions);\n };\n\n /**\n * Animate the view. The view's center, zoom (or resolution), and rotation\n * can be animated for smooth transitions between view states. For example,\n * to animate the view to a new zoom level:\n *\n * view.animate({zoom: view.getZoom() + 1});\n *\n * By default, the animation lasts one second and uses in-and-out easing. You\n * can customize this behavior by including `duration` (in milliseconds) and\n * `easing` options (see {@link module:ol/easing}).\n *\n * To chain together multiple animations, call the method with multiple\n * animation objects. For example, to first zoom and then pan:\n *\n * view.animate({zoom: 10}, {center: [0, 0]});\n *\n * If you provide a function as the last argument to the animate method, it\n * will get called at the end of an animation series. The callback will be\n * called with `true` if the animation series completed on its own or `false`\n * if it was cancelled.\n *\n * Animations are cancelled by user interactions (e.g. dragging the map) or by\n * calling `view.setCenter()`, `view.setResolution()`, or `view.setRotation()`\n * (or another method that calls one of these).\n *\n * @param {...(AnimationOptions|function(boolean))} var_args Animation\n * options. Multiple animations can be run in series by passing multiple\n * options objects. To run multiple animations in parallel, call the method\n * multiple times. An optional callback can be provided as a final\n * argument. The callback will be called with a boolean indicating whether\n * the animation completed without being cancelled.\n * @api\n */\n View.prototype.animate = function animate (var_args) {\n var arguments$1 = arguments;\n\n var animationCount = arguments.length;\n var callback;\n if (animationCount > 1 && typeof arguments[animationCount - 1] === 'function') {\n callback = arguments[animationCount - 1];\n --animationCount;\n }\n if (!this.isDef()) {\n // if view properties are not yet set, shortcut to the final state\n var state = arguments[animationCount - 1];\n if (state.center) {\n this.setCenter(state.center);\n }\n if (state.zoom !== undefined) {\n this.setZoom(state.zoom);\n }\n if (state.rotation !== undefined) {\n this.setRotation(state.rotation);\n }\n if (callback) {\n animationCallback(callback, true);\n }\n return;\n }\n var start = Date.now();\n var center = this.getCenter().slice();\n var resolution = this.getResolution();\n var rotation = this.getRotation();\n var series = [];\n for (var i = 0; i < animationCount; ++i) {\n var options = /** @type {AnimationOptions} */ (arguments$1[i]);\n\n var animation = /** @type {Animation} */ ({\n start: start,\n complete: false,\n anchor: options.anchor,\n duration: options.duration !== undefined ? options.duration : 1000,\n easing: options.easing || inAndOut\n });\n\n if (options.center) {\n animation.sourceCenter = center;\n animation.targetCenter = options.center;\n center = animation.targetCenter;\n }\n\n if (options.zoom !== undefined) {\n animation.sourceResolution = resolution;\n animation.targetResolution = this.constrainResolution(\n this.maxResolution_, options.zoom - this.minZoom_, 0);\n resolution = animation.targetResolution;\n } else if (options.resolution) {\n animation.sourceResolution = resolution;\n animation.targetResolution = options.resolution;\n resolution = animation.targetResolution;\n }\n\n if (options.rotation !== undefined) {\n animation.sourceRotation = rotation;\n var delta = modulo(options.rotation - rotation + Math.PI, 2 * Math.PI) - Math.PI;\n animation.targetRotation = rotation + delta;\n rotation = animation.targetRotation;\n }\n\n animation.callback = callback;\n\n // check if animation is a no-op\n if (isNoopAnimation(animation)) {\n animation.complete = true;\n // we still push it onto the series for callback handling\n } else {\n start += animation.duration;\n }\n series.push(animation);\n }\n this.animations_.push(series);\n this.setHint(ViewHint.ANIMATING, 1);\n this.updateAnimations_();\n };\n\n /**\n * Determine if the view is being animated.\n * @return {boolean} The view is being animated.\n * @api\n */\n View.prototype.getAnimating = function getAnimating () {\n return this.hints_[ViewHint.ANIMATING] > 0;\n };\n\n /**\n * Determine if the user is interacting with the view, such as panning or zooming.\n * @return {boolean} The view is being interacted with.\n * @api\n */\n View.prototype.getInteracting = function getInteracting () {\n return this.hints_[ViewHint.INTERACTING] > 0;\n };\n\n /**\n * Cancel any ongoing animations.\n * @api\n */\n View.prototype.cancelAnimations = function cancelAnimations () {\n this.setHint(ViewHint.ANIMATING, -this.hints_[ViewHint.ANIMATING]);\n for (var i = 0, ii = this.animations_.length; i < ii; ++i) {\n var series = this.animations_[i];\n if (series[0].callback) {\n animationCallback(series[0].callback, false);\n }\n }\n this.animations_.length = 0;\n };\n\n /**\n * Update all animations.\n */\n View.prototype.updateAnimations_ = function updateAnimations_ () {\n if (this.updateAnimationKey_ !== undefined) {\n cancelAnimationFrame(this.updateAnimationKey_);\n this.updateAnimationKey_ = undefined;\n }\n if (!this.getAnimating()) {\n return;\n }\n var now = Date.now();\n var more = false;\n for (var i = this.animations_.length - 1; i >= 0; --i) {\n var series = this.animations_[i];\n var seriesComplete = true;\n for (var j = 0, jj = series.length; j < jj; ++j) {\n var animation = series[j];\n if (animation.complete) {\n continue;\n }\n var elapsed = now - animation.start;\n var fraction = animation.duration > 0 ? elapsed / animation.duration : 1;\n if (fraction >= 1) {\n animation.complete = true;\n fraction = 1;\n } else {\n seriesComplete = false;\n }\n var progress = animation.easing(fraction);\n if (animation.sourceCenter) {\n var x0 = animation.sourceCenter[0];\n var y0 = animation.sourceCenter[1];\n var x1 = animation.targetCenter[0];\n var y1 = animation.targetCenter[1];\n var x = x0 + progress * (x1 - x0);\n var y = y0 + progress * (y1 - y0);\n this.set(ViewProperty.CENTER, [x, y]);\n }\n if (animation.sourceResolution && animation.targetResolution) {\n var resolution = progress === 1 ?\n animation.targetResolution :\n animation.sourceResolution + progress * (animation.targetResolution - animation.sourceResolution);\n if (animation.anchor) {\n this.set(ViewProperty.CENTER,\n this.calculateCenterZoom(resolution, animation.anchor));\n }\n this.set(ViewProperty.RESOLUTION, resolution);\n }\n if (animation.sourceRotation !== undefined && animation.targetRotation !== undefined) {\n var rotation = progress === 1 ?\n modulo(animation.targetRotation + Math.PI, 2 * Math.PI) - Math.PI :\n animation.sourceRotation + progress * (animation.targetRotation - animation.sourceRotation);\n if (animation.anchor) {\n this.set(ViewProperty.CENTER,\n this.calculateCenterRotate(rotation, animation.anchor));\n }\n this.set(ViewProperty.ROTATION, rotation);\n }\n more = true;\n if (!animation.complete) {\n break;\n }\n }\n if (seriesComplete) {\n this.animations_[i] = null;\n this.setHint(ViewHint.ANIMATING, -1);\n var callback = series[0].callback;\n if (callback) {\n animationCallback(callback, true);\n }\n }\n }\n // prune completed series\n this.animations_ = this.animations_.filter(Boolean);\n if (more && this.updateAnimationKey_ === undefined) {\n this.updateAnimationKey_ = requestAnimationFrame(this.updateAnimations_);\n }\n };\n\n /**\n * @param {number} rotation Target rotation.\n * @param {import(\"./coordinate.js\").Coordinate} anchor Rotation anchor.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Center for rotation and anchor.\n */\n View.prototype.calculateCenterRotate = function calculateCenterRotate (rotation, anchor) {\n var center;\n var currentCenter = this.getCenter();\n if (currentCenter !== undefined) {\n center = [currentCenter[0] - anchor[0], currentCenter[1] - anchor[1]];\n rotateCoordinate(center, rotation - this.getRotation());\n addCoordinate(center, anchor);\n }\n return center;\n };\n\n /**\n * @param {number} resolution Target resolution.\n * @param {import(\"./coordinate.js\").Coordinate} anchor Zoom anchor.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Center for resolution and anchor.\n */\n View.prototype.calculateCenterZoom = function calculateCenterZoom (resolution, anchor) {\n var center;\n var currentCenter = this.getCenter();\n var currentResolution = this.getResolution();\n if (currentCenter !== undefined && currentResolution !== undefined) {\n var x = anchor[0] - resolution * (anchor[0] - currentCenter[0]) / currentResolution;\n var y = anchor[1] - resolution * (anchor[1] - currentCenter[1]) / currentResolution;\n center = [x, y];\n }\n return center;\n };\n\n /**\n * @private\n * @return {import(\"./size.js\").Size} Viewport size or `[100, 100]` when no viewport is found.\n */\n View.prototype.getSizeFromViewport_ = function getSizeFromViewport_ () {\n var size = [100, 100];\n var selector = '.ol-viewport[data-view=\"' + getUid(this) + '\"]';\n var element = document.querySelector(selector);\n if (element) {\n var metrics = getComputedStyle(element);\n size[0] = parseInt(metrics.width, 10);\n size[1] = parseInt(metrics.height, 10);\n }\n return size;\n };\n\n /**\n * Get the constrained center of this view.\n * @param {import(\"./coordinate.js\").Coordinate|undefined} center Center.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Constrained center.\n * @api\n */\n View.prototype.constrainCenter = function constrainCenter (center) {\n return this.constraints_.center(center);\n };\n\n /**\n * Get the constrained resolution of this view.\n * @param {number|undefined} resolution Resolution.\n * @param {number=} opt_delta Delta. Default is `0`.\n * @param {number=} opt_direction Direction. Default is `0`.\n * @return {number|undefined} Constrained resolution.\n * @api\n */\n View.prototype.constrainResolution = function constrainResolution (resolution, opt_delta, opt_direction) {\n var delta = opt_delta || 0;\n var direction = opt_direction || 0;\n return this.constraints_.resolution(resolution, delta, direction);\n };\n\n /**\n * Get the constrained rotation of this view.\n * @param {number|undefined} rotation Rotation.\n * @param {number=} opt_delta Delta. Default is `0`.\n * @return {number|undefined} Constrained rotation.\n * @api\n */\n View.prototype.constrainRotation = function constrainRotation (rotation, opt_delta) {\n var delta = opt_delta || 0;\n return this.constraints_.rotation(rotation, delta);\n };\n\n /**\n * Get the view center.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} The center of the view.\n * @observable\n * @api\n */\n View.prototype.getCenter = function getCenter () {\n return (\n /** @type {import(\"./coordinate.js\").Coordinate|undefined} */ (this.get(ViewProperty.CENTER))\n );\n };\n\n /**\n * @return {Constraints} Constraints.\n */\n View.prototype.getConstraints = function getConstraints () {\n return this.constraints_;\n };\n\n /**\n * @param {Array<number>=} opt_hints Destination array.\n * @return {Array<number>} Hint.\n */\n View.prototype.getHints = function getHints (opt_hints) {\n if (opt_hints !== undefined) {\n opt_hints[0] = this.hints_[0];\n opt_hints[1] = this.hints_[1];\n return opt_hints;\n } else {\n return this.hints_.slice();\n }\n };\n\n /**\n * Calculate the extent for the current view state and the passed size.\n * The size is the pixel dimensions of the box into which the calculated extent\n * should fit. In most cases you want to get the extent of the entire map,\n * that is `map.getSize()`.\n * @param {import(\"./size.js\").Size=} opt_size Box pixel size. If not provided, the size of the\n * first map that uses this view will be used.\n * @return {import(\"./extent.js\").Extent} Extent.\n * @api\n */\n View.prototype.calculateExtent = function calculateExtent (opt_size) {\n var size = opt_size || this.getSizeFromViewport_();\n var center = /** @type {!import(\"./coordinate.js\").Coordinate} */ (this.getCenter());\n assert(center, 1); // The view center is not defined\n var resolution = /** @type {!number} */ (this.getResolution());\n assert(resolution !== undefined, 2); // The view resolution is not defined\n var rotation = /** @type {!number} */ (this.getRotation());\n assert(rotation !== undefined, 3); // The view rotation is not defined\n\n return getForViewAndSize(center, resolution, rotation, size);\n };\n\n /**\n * Get the maximum resolution of the view.\n * @return {number} The maximum resolution of the view.\n * @api\n */\n View.prototype.getMaxResolution = function getMaxResolution () {\n return this.maxResolution_;\n };\n\n /**\n * Get the minimum resolution of the view.\n * @return {number} The minimum resolution of the view.\n * @api\n */\n View.prototype.getMinResolution = function getMinResolution () {\n return this.minResolution_;\n };\n\n /**\n * Get the maximum zoom level for the view.\n * @return {number} The maximum zoom level.\n * @api\n */\n View.prototype.getMaxZoom = function getMaxZoom () {\n return /** @type {number} */ (this.getZoomForResolution(this.minResolution_));\n };\n\n /**\n * Set a new maximum zoom level for the view.\n * @param {number} zoom The maximum zoom level.\n * @api\n */\n View.prototype.setMaxZoom = function setMaxZoom (zoom) {\n this.applyOptions_(this.getUpdatedOptions_({maxZoom: zoom}));\n };\n\n /**\n * Get the minimum zoom level for the view.\n * @return {number} The minimum zoom level.\n * @api\n */\n View.prototype.getMinZoom = function getMinZoom () {\n return /** @type {number} */ (this.getZoomForResolution(this.maxResolution_));\n };\n\n /**\n * Set a new minimum zoom level for the view.\n * @param {number} zoom The minimum zoom level.\n * @api\n */\n View.prototype.setMinZoom = function setMinZoom (zoom) {\n this.applyOptions_(this.getUpdatedOptions_({minZoom: zoom}));\n };\n\n /**\n * Get the view projection.\n * @return {import(\"./proj/Projection.js\").default} The projection of the view.\n * @api\n */\n View.prototype.getProjection = function getProjection () {\n return this.projection_;\n };\n\n /**\n * Get the view resolution.\n * @return {number|undefined} The resolution of the view.\n * @observable\n * @api\n */\n View.prototype.getResolution = function getResolution () {\n return /** @type {number|undefined} */ (this.get(ViewProperty.RESOLUTION));\n };\n\n /**\n * Get the resolutions for the view. This returns the array of resolutions\n * passed to the constructor of the View, or undefined if none were given.\n * @return {Array<number>|undefined} The resolutions of the view.\n * @api\n */\n View.prototype.getResolutions = function getResolutions () {\n return this.resolutions_;\n };\n\n /**\n * Get the resolution for a provided extent (in map units) and size (in pixels).\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {import(\"./size.js\").Size=} opt_size Box pixel size.\n * @return {number} The resolution at which the provided extent will render at\n * the given size.\n * @api\n */\n View.prototype.getResolutionForExtent = function getResolutionForExtent (extent, opt_size) {\n var size = opt_size || this.getSizeFromViewport_();\n var xResolution = getWidth(extent) / size[0];\n var yResolution = getHeight(extent) / size[1];\n return Math.max(xResolution, yResolution);\n };\n\n /**\n * Return a function that returns a value between 0 and 1 for a\n * resolution. Exponential scaling is assumed.\n * @param {number=} opt_power Power.\n * @return {function(number): number} Resolution for value function.\n */\n View.prototype.getResolutionForValueFunction = function getResolutionForValueFunction (opt_power) {\n var power = opt_power || 2;\n var maxResolution = this.maxResolution_;\n var minResolution = this.minResolution_;\n var max = Math.log(maxResolution / minResolution) / Math.log(power);\n return (\n /**\n * @param {number} value Value.\n * @return {number} Resolution.\n */\n function(value) {\n var resolution = maxResolution / Math.pow(power, value * max);\n return resolution;\n });\n };\n\n /**\n * Get the view rotation.\n * @return {number} The rotation of the view in radians.\n * @observable\n * @api\n */\n View.prototype.getRotation = function getRotation () {\n return /** @type {number} */ (this.get(ViewProperty.ROTATION));\n };\n\n /**\n * Return a function that returns a resolution for a value between\n * 0 and 1. Exponential scaling is assumed.\n * @param {number=} opt_power Power.\n * @return {function(number): number} Value for resolution function.\n */\n View.prototype.getValueForResolutionFunction = function getValueForResolutionFunction (opt_power) {\n var power = opt_power || 2;\n var maxResolution = this.maxResolution_;\n var minResolution = this.minResolution_;\n var max = Math.log(maxResolution / minResolution) / Math.log(power);\n return (\n /**\n * @param {number} resolution Resolution.\n * @return {number} Value.\n */\n function(resolution) {\n var value = (Math.log(maxResolution / resolution) / Math.log(power)) / max;\n return value;\n });\n };\n\n /**\n * @param {number} pixelRatio Pixel ratio for center rounding.\n * @return {State} View state.\n */\n View.prototype.getState = function getState (pixelRatio) {\n var center = /** @type {import(\"./coordinate.js\").Coordinate} */ (this.getCenter());\n var projection = this.getProjection();\n var resolution = /** @type {number} */ (this.getResolution());\n var pixelResolution = resolution / pixelRatio;\n var rotation = this.getRotation();\n return (\n /** @type {State} */ ({\n center: [\n Math.round(center[0] / pixelResolution) * pixelResolution,\n Math.round(center[1] / pixelResolution) * pixelResolution\n ],\n projection: projection !== undefined ? projection : null,\n resolution: resolution,\n rotation: rotation,\n zoom: this.getZoom()\n })\n );\n };\n\n /**\n * Get the current zoom level. If you configured your view with a resolutions\n * array (this is rare), this method may return non-integer zoom levels (so\n * the zoom level is not safe to use as an index into a resolutions array).\n * @return {number|undefined} Zoom.\n * @api\n */\n View.prototype.getZoom = function getZoom () {\n var zoom;\n var resolution = this.getResolution();\n if (resolution !== undefined) {\n zoom = this.getZoomForResolution(resolution);\n }\n return zoom;\n };\n\n /**\n * Get the zoom level for a resolution.\n * @param {number} resolution The resolution.\n * @return {number|undefined} The zoom level for the provided resolution.\n * @api\n */\n View.prototype.getZoomForResolution = function getZoomForResolution (resolution) {\n var offset = this.minZoom_ || 0;\n var max, zoomFactor;\n if (this.resolutions_) {\n var nearest = linearFindNearest(this.resolutions_, resolution, 1);\n offset = nearest;\n max = this.resolutions_[nearest];\n if (nearest == this.resolutions_.length - 1) {\n zoomFactor = 2;\n } else {\n zoomFactor = max / this.resolutions_[nearest + 1];\n }\n } else {\n max = this.maxResolution_;\n zoomFactor = this.zoomFactor_;\n }\n return offset + Math.log(max / resolution) / Math.log(zoomFactor);\n };\n\n /**\n * Get the resolution for a zoom level.\n * @param {number} zoom Zoom level.\n * @return {number} The view resolution for the provided zoom level.\n * @api\n */\n View.prototype.getResolutionForZoom = function getResolutionForZoom (zoom) {\n return /** @type {number} */ (this.constrainResolution(\n this.maxResolution_, zoom - this.minZoom_, 0));\n };\n\n /**\n * Fit the given geometry or extent based on the given map size and border.\n * The size is pixel dimensions of the box to fit the extent into.\n * In most cases you will want to use the map size, that is `map.getSize()`.\n * Takes care of the map angle.\n * @param {import(\"./geom/SimpleGeometry.js\").default|import(\"./extent.js\").Extent} geometryOrExtent The geometry or\n * extent to fit the view to.\n * @param {FitOptions=} opt_options Options.\n * @api\n */\n View.prototype.fit = function fit (geometryOrExtent, opt_options) {\n var options = opt_options || {};\n var size = options.size;\n if (!size) {\n size = this.getSizeFromViewport_();\n }\n /** @type {import(\"./geom/SimpleGeometry.js\").default} */\n var geometry;\n assert(Array.isArray(geometryOrExtent) || typeof /** @type {?} */ (geometryOrExtent).getSimplifiedGeometry === 'function',\n 24); // Invalid extent or geometry provided as `geometry`\n if (Array.isArray(geometryOrExtent)) {\n assert(!isEmpty(geometryOrExtent),\n 25); // Cannot fit empty extent provided as `geometry`\n geometry = polygonFromExtent(geometryOrExtent);\n } else if (geometryOrExtent.getType() === GeometryType.CIRCLE) {\n geometryOrExtent = geometryOrExtent.getExtent();\n geometry = polygonFromExtent(geometryOrExtent);\n geometry.rotate(this.getRotation(), getCenter(geometryOrExtent));\n } else {\n geometry = geometryOrExtent;\n }\n\n var padding = options.padding !== undefined ? options.padding : [0, 0, 0, 0];\n var constrainResolution = options.constrainResolution !== undefined ?\n options.constrainResolution : true;\n var nearest = options.nearest !== undefined ? options.nearest : false;\n var minResolution;\n if (options.minResolution !== undefined) {\n minResolution = options.minResolution;\n } else if (options.maxZoom !== undefined) {\n minResolution = this.constrainResolution(\n this.maxResolution_, options.maxZoom - this.minZoom_, 0);\n } else {\n minResolution = 0;\n }\n var coords = geometry.getFlatCoordinates();\n\n // calculate rotated extent\n var rotation = this.getRotation();\n var cosAngle = Math.cos(-rotation);\n var sinAngle = Math.sin(-rotation);\n var minRotX = +Infinity;\n var minRotY = +Infinity;\n var maxRotX = -Infinity;\n var maxRotY = -Infinity;\n var stride = geometry.getStride();\n for (var i = 0, ii = coords.length; i < ii; i += stride) {\n var rotX = coords[i] * cosAngle - coords[i + 1] * sinAngle;\n var rotY = coords[i] * sinAngle + coords[i + 1] * cosAngle;\n minRotX = Math.min(minRotX, rotX);\n minRotY = Math.min(minRotY, rotY);\n maxRotX = Math.max(maxRotX, rotX);\n maxRotY = Math.max(maxRotY, rotY);\n }\n\n // calculate resolution\n var resolution = this.getResolutionForExtent(\n [minRotX, minRotY, maxRotX, maxRotY],\n [size[0] - padding[1] - padding[3], size[1] - padding[0] - padding[2]]);\n resolution = isNaN(resolution) ? minResolution :\n Math.max(resolution, minResolution);\n if (constrainResolution) {\n var constrainedResolution = this.constrainResolution(resolution, 0, 0);\n if (!nearest && constrainedResolution < resolution) {\n constrainedResolution = this.constrainResolution(\n constrainedResolution, -1, 0);\n }\n resolution = constrainedResolution;\n }\n\n // calculate center\n sinAngle = -sinAngle; // go back to original rotation\n var centerRotX = (minRotX + maxRotX) / 2;\n var centerRotY = (minRotY + maxRotY) / 2;\n centerRotX += (padding[1] - padding[3]) / 2 * resolution;\n centerRotY += (padding[0] - padding[2]) / 2 * resolution;\n var centerX = centerRotX * cosAngle - centerRotY * sinAngle;\n var centerY = centerRotY * cosAngle + centerRotX * sinAngle;\n var center = [centerX, centerY];\n var callback = options.callback ? options.callback : VOID;\n\n if (options.duration !== undefined) {\n this.animate({\n resolution: resolution,\n center: center,\n duration: options.duration,\n easing: options.easing\n }, callback);\n } else {\n this.setResolution(resolution);\n this.setCenter(center);\n animationCallback(callback, true);\n }\n };\n\n /**\n * Center on coordinate and view position.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"./size.js\").Size} size Box pixel size.\n * @param {import(\"./pixel.js\").Pixel} position Position on the view to center on.\n * @api\n */\n View.prototype.centerOn = function centerOn (coordinate, size, position) {\n // calculate rotated position\n var rotation = this.getRotation();\n var cosAngle = Math.cos(-rotation);\n var sinAngle = Math.sin(-rotation);\n var rotX = coordinate[0] * cosAngle - coordinate[1] * sinAngle;\n var rotY = coordinate[1] * cosAngle + coordinate[0] * sinAngle;\n var resolution = this.getResolution();\n rotX += (size[0] / 2 - position[0]) * resolution;\n rotY += (position[1] - size[1] / 2) * resolution;\n\n // go back to original angle\n sinAngle = -sinAngle; // go back to original rotation\n var centerX = rotX * cosAngle - rotY * sinAngle;\n var centerY = rotY * cosAngle + rotX * sinAngle;\n\n this.setCenter([centerX, centerY]);\n };\n\n /**\n * @return {boolean} Is defined.\n */\n View.prototype.isDef = function isDef () {\n return !!this.getCenter() && this.getResolution() !== undefined;\n };\n\n /**\n * Rotate the view around a given coordinate.\n * @param {number} rotation New rotation value for the view.\n * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The rotation center.\n * @api\n */\n View.prototype.rotate = function rotate (rotation, opt_anchor) {\n if (opt_anchor !== undefined) {\n var center = this.calculateCenterRotate(rotation, opt_anchor);\n this.setCenter(center);\n }\n this.setRotation(rotation);\n };\n\n /**\n * Set the center of the current view.\n * @param {import(\"./coordinate.js\").Coordinate|undefined} center The center of the view.\n * @observable\n * @api\n */\n View.prototype.setCenter = function setCenter (center) {\n this.set(ViewProperty.CENTER, center);\n if (this.getAnimating()) {\n this.cancelAnimations();\n }\n };\n\n /**\n * @param {ViewHint} hint Hint.\n * @param {number} delta Delta.\n * @return {number} New value.\n */\n View.prototype.setHint = function setHint (hint, delta) {\n this.hints_[hint] += delta;\n this.changed();\n return this.hints_[hint];\n };\n\n /**\n * Set the resolution for this view.\n * @param {number|undefined} resolution The resolution of the view.\n * @observable\n * @api\n */\n View.prototype.setResolution = function setResolution (resolution) {\n this.set(ViewProperty.RESOLUTION, resolution);\n if (this.getAnimating()) {\n this.cancelAnimations();\n }\n };\n\n /**\n * Set the rotation for this view.\n * @param {number} rotation The rotation of the view in radians.\n * @observable\n * @api\n */\n View.prototype.setRotation = function setRotation (rotation) {\n this.set(ViewProperty.ROTATION, rotation);\n if (this.getAnimating()) {\n this.cancelAnimations();\n }\n };\n\n /**\n * Zoom to a specific zoom level.\n * @param {number} zoom Zoom level.\n * @api\n */\n View.prototype.setZoom = function setZoom (zoom) {\n this.setResolution(this.getResolutionForZoom(zoom));\n };\n\n return View;\n}(BaseObject));\n\n\n/**\n * @param {Function} callback Callback.\n * @param {*} returnValue Return value.\n */\nfunction animationCallback(callback, returnValue) {\n setTimeout(function() {\n callback(returnValue);\n }, 0);\n}\n\n\n/**\n * @param {ViewOptions} options View options.\n * @return {import(\"./centerconstraint.js\").Type} The constraint.\n */\nexport function createCenterConstraint(options) {\n if (options.extent !== undefined) {\n return createExtent(options.extent);\n } else {\n return centerNone;\n }\n}\n\n\n/**\n * @param {ViewOptions} options View options.\n * @return {{constraint: import(\"./resolutionconstraint.js\").Type, maxResolution: number,\n * minResolution: number, minZoom: number, zoomFactor: number}} The constraint.\n */\nexport function createResolutionConstraint(options) {\n var resolutionConstraint;\n var maxResolution;\n var minResolution;\n\n // TODO: move these to be ol constants\n // see https://github.com/openlayers/openlayers/issues/2076\n var defaultMaxZoom = 28;\n var defaultZoomFactor = 2;\n\n var minZoom = options.minZoom !== undefined ?\n options.minZoom : DEFAULT_MIN_ZOOM;\n\n var maxZoom = options.maxZoom !== undefined ?\n options.maxZoom : defaultMaxZoom;\n\n var zoomFactor = options.zoomFactor !== undefined ?\n options.zoomFactor : defaultZoomFactor;\n\n if (options.resolutions !== undefined) {\n var resolutions = options.resolutions;\n maxResolution = resolutions[minZoom];\n minResolution = resolutions[maxZoom] !== undefined ?\n resolutions[maxZoom] : resolutions[resolutions.length - 1];\n resolutionConstraint = createSnapToResolutions(\n resolutions);\n } else {\n // calculate the default min and max resolution\n var projection = createProjection(options.projection, 'EPSG:3857');\n var extent = projection.getExtent();\n var size = !extent ?\n // use an extent that can fit the whole world if need be\n 360 * METERS_PER_UNIT[Units.DEGREES] /\n projection.getMetersPerUnit() :\n Math.max(getWidth(extent), getHeight(extent));\n\n var defaultMaxResolution = size / DEFAULT_TILE_SIZE / Math.pow(\n defaultZoomFactor, DEFAULT_MIN_ZOOM);\n\n var defaultMinResolution = defaultMaxResolution / Math.pow(\n defaultZoomFactor, defaultMaxZoom - DEFAULT_MIN_ZOOM);\n\n // user provided maxResolution takes precedence\n maxResolution = options.maxResolution;\n if (maxResolution !== undefined) {\n minZoom = 0;\n } else {\n maxResolution = defaultMaxResolution / Math.pow(zoomFactor, minZoom);\n }\n\n // user provided minResolution takes precedence\n minResolution = options.minResolution;\n if (minResolution === undefined) {\n if (options.maxZoom !== undefined) {\n if (options.maxResolution !== undefined) {\n minResolution = maxResolution / Math.pow(zoomFactor, maxZoom);\n } else {\n minResolution = defaultMaxResolution / Math.pow(zoomFactor, maxZoom);\n }\n } else {\n minResolution = defaultMinResolution;\n }\n }\n\n // given discrete zoom levels, minResolution may be different than provided\n maxZoom = minZoom + Math.floor(\n Math.log(maxResolution / minResolution) / Math.log(zoomFactor));\n minResolution = maxResolution / Math.pow(zoomFactor, maxZoom - minZoom);\n\n resolutionConstraint = createSnapToPower(\n zoomFactor, maxResolution, maxZoom - minZoom);\n }\n return {constraint: resolutionConstraint, maxResolution: maxResolution,\n minResolution: minResolution, minZoom: minZoom, zoomFactor: zoomFactor};\n}\n\n\n/**\n * @param {ViewOptions} options View options.\n * @return {import(\"./rotationconstraint.js\").Type} Rotation constraint.\n */\nexport function createRotationConstraint(options) {\n var enableRotation = options.enableRotation !== undefined ?\n options.enableRotation : true;\n if (enableRotation) {\n var constrainRotation = options.constrainRotation;\n if (constrainRotation === undefined || constrainRotation === true) {\n return createSnapToZero();\n } else if (constrainRotation === false) {\n return rotationNone;\n } else if (typeof constrainRotation === 'number') {\n return createSnapToN(constrainRotation);\n } else {\n return rotationNone;\n }\n } else {\n return disable;\n }\n}\n\n\n/**\n * Determine if an animation involves no view change.\n * @param {Animation} animation The animation.\n * @return {boolean} The animation involves no view change.\n */\nexport function isNoopAnimation(animation) {\n if (animation.sourceCenter && animation.targetCenter) {\n if (!coordinatesEqual(animation.sourceCenter, animation.targetCenter)) {\n return false;\n }\n }\n if (animation.sourceResolution !== animation.targetResolution) {\n return false;\n }\n if (animation.sourceRotation !== animation.targetRotation) {\n return false;\n }\n return true;\n}\n\nexport default View;\n\n//# sourceMappingURL=View.js.map","/**\n * @module ol/dom\n */\n\n\n/**\n * Create an html canvas element and returns its 2d context.\n * @param {number=} opt_width Canvas width.\n * @param {number=} opt_height Canvas height.\n * @return {CanvasRenderingContext2D} The context.\n */\nexport function createCanvasContext2D(opt_width, opt_height) {\n var canvas = /** @type {HTMLCanvasElement} */ (document.createElement('canvas'));\n if (opt_width) {\n canvas.width = opt_width;\n }\n if (opt_height) {\n canvas.height = opt_height;\n }\n return /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d'));\n}\n\n\n/**\n * Get the current computed width for the given element including margin,\n * padding and border.\n * Equivalent to jQuery's `$(el).outerWidth(true)`.\n * @param {!HTMLElement} element Element.\n * @return {number} The width.\n */\nexport function outerWidth(element) {\n var width = element.offsetWidth;\n var style = getComputedStyle(element);\n width += parseInt(style.marginLeft, 10) + parseInt(style.marginRight, 10);\n\n return width;\n}\n\n\n/**\n * Get the current computed height for the given element including margin,\n * padding and border.\n * Equivalent to jQuery's `$(el).outerHeight(true)`.\n * @param {!HTMLElement} element Element.\n * @return {number} The height.\n */\nexport function outerHeight(element) {\n var height = element.offsetHeight;\n var style = getComputedStyle(element);\n height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10);\n\n return height;\n}\n\n/**\n * @param {Node} newNode Node to replace old node\n * @param {Node} oldNode The node to be replaced\n */\nexport function replaceNode(newNode, oldNode) {\n var parent = oldNode.parentNode;\n if (parent) {\n parent.replaceChild(newNode, oldNode);\n }\n}\n\n/**\n * @param {Node} node The node to remove.\n * @returns {Node} The node that was removed or null.\n */\nexport function removeNode(node) {\n return node && node.parentNode ? node.parentNode.removeChild(node) : null;\n}\n\n/**\n * @param {Node} node The node to remove the children from.\n */\nexport function removeChildren(node) {\n while (node.lastChild) {\n node.removeChild(node.lastChild);\n }\n}\n\n//# sourceMappingURL=dom.js.map","/**\n * @module ol/layer/Property\n */\n\n/**\n * @enum {string}\n */\nexport default {\n OPACITY: 'opacity',\n VISIBLE: 'visible',\n EXTENT: 'extent',\n Z_INDEX: 'zIndex',\n MAX_RESOLUTION: 'maxResolution',\n MIN_RESOLUTION: 'minResolution',\n SOURCE: 'source'\n};\n\n//# sourceMappingURL=Property.js.map","/**\n * @module ol/layer/Base\n */\nimport {abstract} from '../util.js';\nimport BaseObject from '../Object.js';\nimport LayerProperty from './Property.js';\nimport {clamp} from '../math.js';\nimport {assign} from '../obj.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering. The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering. At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n */\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Note that with {@link module:ol/layer/Base} and all its subclasses, any property set in\n * the options is set as a {@link module:ol/Object} property on the layer object, so\n * is observable, and has get/set accessors.\n *\n * @api\n */\nvar BaseLayer = /*@__PURE__*/(function (BaseObject) {\n function BaseLayer(options) {\n\n BaseObject.call(this);\n\n /**\n * @type {Object<string, *>}\n */\n var properties = assign({}, options);\n properties[LayerProperty.OPACITY] =\n options.opacity !== undefined ? options.opacity : 1;\n properties[LayerProperty.VISIBLE] =\n options.visible !== undefined ? options.visible : true;\n properties[LayerProperty.Z_INDEX] = options.zIndex;\n properties[LayerProperty.MAX_RESOLUTION] =\n options.maxResolution !== undefined ? options.maxResolution : Infinity;\n properties[LayerProperty.MIN_RESOLUTION] =\n options.minResolution !== undefined ? options.minResolution : 0;\n\n this.setProperties(properties);\n\n /**\n * @type {import(\"./Layer.js\").State}\n * @private\n */\n this.state_ = null;\n\n /**\n * The layer type.\n * @type {import(\"../LayerType.js\").default}\n * @protected;\n */\n this.type;\n\n }\n\n if ( BaseObject ) BaseLayer.__proto__ = BaseObject;\n BaseLayer.prototype = Object.create( BaseObject && BaseObject.prototype );\n BaseLayer.prototype.constructor = BaseLayer;\n\n /**\n * Get the layer type (used when creating a layer renderer).\n * @return {import(\"../LayerType.js\").default} The layer type.\n */\n BaseLayer.prototype.getType = function getType () {\n return this.type;\n };\n\n /**\n * @return {import(\"./Layer.js\").State} Layer state.\n */\n BaseLayer.prototype.getLayerState = function getLayerState () {\n /** @type {import(\"./Layer.js\").State} */\n var state = this.state_ || /** @type {?} */ ({\n layer: this,\n managed: true\n });\n state.opacity = clamp(this.getOpacity(), 0, 1);\n state.sourceState = this.getSourceState();\n state.visible = this.getVisible();\n state.extent = this.getExtent();\n state.zIndex = this.getZIndex() || 0;\n state.maxResolution = this.getMaxResolution();\n state.minResolution = Math.max(this.getMinResolution(), 0);\n this.state_ = state;\n\n return state;\n };\n\n /**\n * @abstract\n * @param {Array<import(\"./Layer.js\").default>=} opt_array Array of layers (to be\n * modified in place).\n * @return {Array<import(\"./Layer.js\").default>} Array of layers.\n */\n BaseLayer.prototype.getLayersArray = function getLayersArray (opt_array) {\n return abstract();\n };\n\n /**\n * @abstract\n * @param {Array<import(\"./Layer.js\").State>=} opt_states Optional list of layer\n * states (to be modified in place).\n * @return {Array<import(\"./Layer.js\").State>} List of layer states.\n */\n BaseLayer.prototype.getLayerStatesArray = function getLayerStatesArray (opt_states) {\n return abstract();\n };\n\n /**\n * Return the {@link module:ol/extent~Extent extent} of the layer or `undefined` if it\n * will be visible regardless of extent.\n * @return {import(\"../extent.js\").Extent|undefined} The layer extent.\n * @observable\n * @api\n */\n BaseLayer.prototype.getExtent = function getExtent () {\n return (\n /** @type {import(\"../extent.js\").Extent|undefined} */ (this.get(LayerProperty.EXTENT))\n );\n };\n\n /**\n * Return the maximum resolution of the layer.\n * @return {number} The maximum resolution of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.getMaxResolution = function getMaxResolution () {\n return /** @type {number} */ (this.get(LayerProperty.MAX_RESOLUTION));\n };\n\n /**\n * Return the minimum resolution of the layer.\n * @return {number} The minimum resolution of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.getMinResolution = function getMinResolution () {\n return /** @type {number} */ (this.get(LayerProperty.MIN_RESOLUTION));\n };\n\n /**\n * Return the opacity of the layer (between 0 and 1).\n * @return {number} The opacity of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.getOpacity = function getOpacity () {\n return /** @type {number} */ (this.get(LayerProperty.OPACITY));\n };\n\n /**\n * @abstract\n * @return {import(\"../source/State.js\").default} Source state.\n */\n BaseLayer.prototype.getSourceState = function getSourceState () {\n return abstract();\n };\n\n /**\n * Return the visibility of the layer (`true` or `false`).\n * @return {boolean} The visibility of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.getVisible = function getVisible () {\n return /** @type {boolean} */ (this.get(LayerProperty.VISIBLE));\n };\n\n /**\n * Return the Z-index of the layer, which is used to order layers before\n * rendering. The default Z-index is 0.\n * @return {number} The Z-index of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.getZIndex = function getZIndex () {\n return /** @type {number} */ (this.get(LayerProperty.Z_INDEX));\n };\n\n /**\n * Set the extent at which the layer is visible. If `undefined`, the layer\n * will be visible at all extents.\n * @param {import(\"../extent.js\").Extent|undefined} extent The extent of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setExtent = function setExtent (extent) {\n this.set(LayerProperty.EXTENT, extent);\n };\n\n /**\n * Set the maximum resolution at which the layer is visible.\n * @param {number} maxResolution The maximum resolution of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setMaxResolution = function setMaxResolution (maxResolution) {\n this.set(LayerProperty.MAX_RESOLUTION, maxResolution);\n };\n\n /**\n * Set the minimum resolution at which the layer is visible.\n * @param {number} minResolution The minimum resolution of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setMinResolution = function setMinResolution (minResolution) {\n this.set(LayerProperty.MIN_RESOLUTION, minResolution);\n };\n\n /**\n * Set the opacity of the layer, allowed values range from 0 to 1.\n * @param {number} opacity The opacity of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setOpacity = function setOpacity (opacity) {\n this.set(LayerProperty.OPACITY, opacity);\n };\n\n /**\n * Set the visibility of the layer (`true` or `false`).\n * @param {boolean} visible The visibility of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setVisible = function setVisible (visible) {\n this.set(LayerProperty.VISIBLE, visible);\n };\n\n /**\n * Set Z-index of the layer, which is used to order layers before rendering.\n * The default Z-index is 0.\n * @param {number} zindex The z-index of the layer.\n * @observable\n * @api\n */\n BaseLayer.prototype.setZIndex = function setZIndex (zindex) {\n this.set(LayerProperty.Z_INDEX, zindex);\n };\n\n return BaseLayer;\n}(BaseObject));\n\n\nexport default BaseLayer;\n\n//# sourceMappingURL=Base.js.map","/**\n * @module ol/source/State\n */\n\n/**\n * @enum {string}\n * State of the source, one of 'undefined', 'loading', 'ready' or 'error'.\n */\nexport default {\n UNDEFINED: 'undefined',\n LOADING: 'loading',\n READY: 'ready',\n ERROR: 'error'\n};\n\n//# sourceMappingURL=State.js.map","/**\n * @module ol/layer/Group\n */\nimport {getUid} from '../util.js';\nimport Collection from '../Collection.js';\nimport CollectionEventType from '../CollectionEventType.js';\nimport {getChangeEventType} from '../Object.js';\nimport ObjectEventType from '../ObjectEventType.js';\nimport {assert} from '../asserts.js';\nimport {listen, unlistenByKey} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {getIntersection} from '../extent.js';\nimport BaseLayer from './Base.js';\nimport {assign, clear} from '../obj.js';\nimport SourceState from '../source/State.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering. The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering. At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {Array<import(\"./Base.js\").default>|import(\"../Collection.js\").default<import(\"./Base.js\").default>} [layers] Child layers.\n */\n\n\n/**\n * @enum {string}\n * @private\n */\nvar Property = {\n LAYERS: 'layers'\n};\n\n\n/**\n * @classdesc\n * A {@link module:ol/Collection~Collection} of layers that are handled together.\n *\n * A generic `change` event is triggered when the group/Collection changes.\n *\n * @api\n */\nvar LayerGroup = /*@__PURE__*/(function (BaseLayer) {\n function LayerGroup(opt_options) {\n\n var options = opt_options || {};\n var baseOptions = /** @type {Options} */ (assign({}, options));\n delete baseOptions.layers;\n\n var layers = options.layers;\n\n BaseLayer.call(this, baseOptions);\n\n /**\n * @private\n * @type {Array<import(\"../events.js\").EventsKey>}\n */\n this.layersListenerKeys_ = [];\n\n /**\n * @private\n * @type {Object<string, Array<import(\"../events.js\").EventsKey>>}\n */\n this.listenerKeys_ = {};\n\n listen(this,\n getChangeEventType(Property.LAYERS),\n this.handleLayersChanged_, this);\n\n if (layers) {\n if (Array.isArray(layers)) {\n layers = new Collection(layers.slice(), {unique: true});\n } else {\n assert(typeof /** @type {?} */ (layers).getArray === 'function',\n 43); // Expected `layers` to be an array or a `Collection`\n }\n } else {\n layers = new Collection(undefined, {unique: true});\n }\n\n this.setLayers(layers);\n\n }\n\n if ( BaseLayer ) LayerGroup.__proto__ = BaseLayer;\n LayerGroup.prototype = Object.create( BaseLayer && BaseLayer.prototype );\n LayerGroup.prototype.constructor = LayerGroup;\n\n /**\n * @private\n */\n LayerGroup.prototype.handleLayerChange_ = function handleLayerChange_ () {\n this.changed();\n };\n\n /**\n * @private\n */\n LayerGroup.prototype.handleLayersChanged_ = function handleLayersChanged_ () {\n this.layersListenerKeys_.forEach(unlistenByKey);\n this.layersListenerKeys_.length = 0;\n\n var layers = this.getLayers();\n this.layersListenerKeys_.push(\n listen(layers, CollectionEventType.ADD, this.handleLayersAdd_, this),\n listen(layers, CollectionEventType.REMOVE, this.handleLayersRemove_, this)\n );\n\n for (var id in this.listenerKeys_) {\n this.listenerKeys_[id].forEach(unlistenByKey);\n }\n clear(this.listenerKeys_);\n\n var layersArray = layers.getArray();\n for (var i = 0, ii = layersArray.length; i < ii; i++) {\n var layer = layersArray[i];\n this.listenerKeys_[getUid(layer)] = [\n listen(layer, ObjectEventType.PROPERTYCHANGE, this.handleLayerChange_, this),\n listen(layer, EventType.CHANGE, this.handleLayerChange_, this)\n ];\n }\n\n this.changed();\n };\n\n /**\n * @param {import(\"../Collection.js\").CollectionEvent} collectionEvent CollectionEvent.\n * @private\n */\n LayerGroup.prototype.handleLayersAdd_ = function handleLayersAdd_ (collectionEvent) {\n var layer = /** @type {import(\"./Base.js\").default} */ (collectionEvent.element);\n this.listenerKeys_[getUid(layer)] = [\n listen(layer, ObjectEventType.PROPERTYCHANGE, this.handleLayerChange_, this),\n listen(layer, EventType.CHANGE, this.handleLayerChange_, this)\n ];\n this.changed();\n };\n\n /**\n * @param {import(\"../Collection.js\").CollectionEvent} collectionEvent CollectionEvent.\n * @private\n */\n LayerGroup.prototype.handleLayersRemove_ = function handleLayersRemove_ (collectionEvent) {\n var layer = /** @type {import(\"./Base.js\").default} */ (collectionEvent.element);\n var key = getUid(layer);\n this.listenerKeys_[key].forEach(unlistenByKey);\n delete this.listenerKeys_[key];\n this.changed();\n };\n\n /**\n * Returns the {@link module:ol/Collection collection} of {@link module:ol/layer/Layer~Layer layers}\n * in this group.\n * @return {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} Collection of\n * {@link module:ol/layer/Base layers} that are part of this group.\n * @observable\n * @api\n */\n LayerGroup.prototype.getLayers = function getLayers () {\n return (\n /** @type {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} */ (this.get(Property.LAYERS))\n );\n };\n\n /**\n * Set the {@link module:ol/Collection collection} of {@link module:ol/layer/Layer~Layer layers}\n * in this group.\n * @param {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} layers Collection of\n * {@link module:ol/layer/Base layers} that are part of this group.\n * @observable\n * @api\n */\n LayerGroup.prototype.setLayers = function setLayers (layers) {\n this.set(Property.LAYERS, layers);\n };\n\n /**\n * @inheritDoc\n */\n LayerGroup.prototype.getLayersArray = function getLayersArray (opt_array) {\n var array = opt_array !== undefined ? opt_array : [];\n this.getLayers().forEach(function(layer) {\n layer.getLayersArray(array);\n });\n return array;\n };\n\n /**\n * @inheritDoc\n */\n LayerGroup.prototype.getLayerStatesArray = function getLayerStatesArray (opt_states) {\n var states = opt_states !== undefined ? opt_states : [];\n\n var pos = states.length;\n\n this.getLayers().forEach(function(layer) {\n layer.getLayerStatesArray(states);\n });\n\n var ownLayerState = this.getLayerState();\n for (var i = pos, ii = states.length; i < ii; i++) {\n var layerState = states[i];\n layerState.opacity *= ownLayerState.opacity;\n layerState.visible = layerState.visible && ownLayerState.visible;\n layerState.maxResolution = Math.min(\n layerState.maxResolution, ownLayerState.maxResolution);\n layerState.minResolution = Math.max(\n layerState.minResolution, ownLayerState.minResolution);\n if (ownLayerState.extent !== undefined) {\n if (layerState.extent !== undefined) {\n layerState.extent = getIntersection(layerState.extent, ownLayerState.extent);\n } else {\n layerState.extent = ownLayerState.extent;\n }\n }\n }\n\n return states;\n };\n\n /**\n * @inheritDoc\n */\n LayerGroup.prototype.getSourceState = function getSourceState () {\n return SourceState.READY;\n };\n\n return LayerGroup;\n}(BaseLayer));\n\n\nexport default LayerGroup;\n\n//# sourceMappingURL=Group.js.map","/**\n * @module ol/size\n */\n\n\n/**\n * An array of numbers representing a size: `[width, height]`.\n * @typedef {Array<number>} Size\n * @api\n */\n\n\n/**\n * Returns a buffered size.\n * @param {Size} size Size.\n * @param {number} num The amount by which to buffer.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} The buffered size.\n */\nexport function buffer(size, num, opt_size) {\n if (opt_size === undefined) {\n opt_size = [0, 0];\n }\n opt_size[0] = size[0] + 2 * num;\n opt_size[1] = size[1] + 2 * num;\n return opt_size;\n}\n\n\n/**\n * Determines if a size has a positive area.\n * @param {Size} size The size to test.\n * @return {boolean} The size has a positive area.\n */\nexport function hasArea(size) {\n return size[0] > 0 && size[1] > 0;\n}\n\n\n/**\n * Returns a size scaled by a ratio. The result will be an array of integers.\n * @param {Size} size Size.\n * @param {number} ratio Ratio.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} The scaled size.\n */\nexport function scale(size, ratio, opt_size) {\n if (opt_size === undefined) {\n opt_size = [0, 0];\n }\n opt_size[0] = (size[0] * ratio + 0.5) | 0;\n opt_size[1] = (size[1] * ratio + 0.5) | 0;\n return opt_size;\n}\n\n\n/**\n * Returns an `Size` array for the passed in number (meaning: square) or\n * `Size` array.\n * (meaning: non-square),\n * @param {number|Size} size Width and height.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} Size.\n * @api\n */\nexport function toSize(size, opt_size) {\n if (Array.isArray(size)) {\n return size;\n } else {\n if (opt_size === undefined) {\n opt_size = [size, size];\n } else {\n opt_size[0] = opt_size[1] = /** @type {number} */ (size);\n }\n return opt_size;\n }\n}\n\n//# sourceMappingURL=size.js.map","/**\n * @module ol/PluggableMap\n */\nimport {getUid} from './util.js';\nimport Collection from './Collection.js';\nimport CollectionEventType from './CollectionEventType.js';\nimport MapBrowserEvent from './MapBrowserEvent.js';\nimport MapBrowserEventHandler from './MapBrowserEventHandler.js';\nimport MapBrowserEventType from './MapBrowserEventType.js';\nimport MapEvent from './MapEvent.js';\nimport MapEventType from './MapEventType.js';\nimport MapProperty from './MapProperty.js';\nimport RenderEventType from './render/EventType.js';\nimport BaseObject, {getChangeEventType} from './Object.js';\nimport ObjectEventType from './ObjectEventType.js';\nimport TileQueue from './TileQueue.js';\nimport View from './View.js';\nimport ViewHint from './ViewHint.js';\nimport {assert} from './asserts.js';\nimport {removeNode} from './dom.js';\nimport {listen, unlistenByKey, unlisten} from './events.js';\nimport {stopPropagation} from './events/Event.js';\nimport EventType from './events/EventType.js';\nimport {createEmpty, clone, createOrUpdateEmpty, equals, getForViewAndSize, isEmpty} from './extent.js';\nimport {TRUE} from './functions.js';\nimport {DEVICE_PIXEL_RATIO, TOUCH} from './has.js';\nimport LayerGroup from './layer/Group.js';\nimport {hasArea} from './size.js';\nimport {DROP} from './structs/PriorityQueue.js';\nimport {create as createTransform, apply as applyTransform} from './transform.js';\n\n\n/**\n * State of the current frame. Only `pixelRatio`, `time` and `viewState` should\n * be used in applications.\n * @typedef {Object} FrameState\n * @property {number} pixelRatio The pixel ratio of the frame.\n * @property {number} time The time when rendering of the frame was requested.\n * @property {import(\"./View.js\").State} viewState The state of the current view.\n * @property {boolean} animate\n * @property {import(\"./transform.js\").Transform} coordinateToPixelTransform\n * @property {null|import(\"./extent.js\").Extent} extent\n * @property {import(\"./coordinate.js\").Coordinate} focus\n * @property {number} index\n * @property {Object<string, import(\"./layer/Layer.js\").State>} layerStates\n * @property {Array<import(\"./layer/Layer.js\").State>} layerStatesArray\n * @property {import(\"./transform.js\").Transform} pixelToCoordinateTransform\n * @property {Array<PostRenderFunction>} postRenderFunctions\n * @property {import(\"./size.js\").Size} size\n * @property {!Object<string, boolean>} skippedFeatureUids\n * @property {TileQueue} tileQueue\n * @property {Object<string, Object<string, import(\"./TileRange.js\").default>>} usedTiles\n * @property {Array<number>} viewHints\n * @property {!Object<string, Object<string, boolean>>} wantedTiles\n */\n\n\n/**\n * @typedef {function(PluggableMap, ?FrameState): boolean} PostRenderFunction\n */\n\n\n/**\n * @typedef {Object} AtPixelOptions\n * @property {undefined|function(import(\"./layer/Layer.js\").default): boolean} layerFilter Layer filter\n * function. The filter function will receive one argument, the\n * {@link module:ol/layer/Layer layer-candidate} and it should return a boolean value.\n * Only layers which are visible and for which this function returns `true`\n * will be tested for features. By default, all visible layers will be tested.\n * @property {number} [hitTolerance=0] Hit-detection tolerance in pixels. Pixels\n * inside the radius around the given position will be checked for features. This only\n * works for the canvas renderer and not for WebGL.\n */\n\n\n/**\n * @typedef {Object} MapOptionsInternal\n * @property {Collection<import(\"./control/Control.js\").default>} [controls]\n * @property {Collection<import(\"./interaction/Interaction.js\").default>} [interactions]\n * @property {HTMLElement|Document} keyboardEventTarget\n * @property {Collection<import(\"./Overlay.js\").default>} overlays\n * @property {Object<string, *>} values\n */\n\n\n/**\n * Object literal with config options for the map.\n * @typedef {Object} MapOptions\n * @property {Collection<import(\"./control/Control.js\").default>|Array<import(\"./control/Control.js\").default>} [controls]\n * Controls initially added to the map. If not specified,\n * {@link module:ol/control~defaults} is used.\n * @property {number} [pixelRatio=window.devicePixelRatio] The ratio between\n * physical pixels and device-independent pixels (dips) on the device.\n * @property {Collection<import(\"./interaction/Interaction.js\").default>|Array<import(\"./interaction/Interaction.js\").default>} [interactions]\n * Interactions that are initially added to the map. If not specified,\n * {@link module:ol/interaction~defaults} is used.\n * @property {HTMLElement|Document|string} [keyboardEventTarget] The element to\n * listen to keyboard events on. This determines when the `KeyboardPan` and\n * `KeyboardZoom` interactions trigger. For example, if this option is set to\n * `document` the keyboard interactions will always trigger. If this option is\n * not specified, the element the library listens to keyboard events on is the\n * map target (i.e. the user-provided div for the map). If this is not\n * `document`, the target element needs to be focused for key events to be\n * emitted, requiring that the target element has a `tabindex` attribute.\n * @property {Array<import(\"./layer/Base.js\").default>|Collection<import(\"./layer/Base.js\").default>|LayerGroup} [layers]\n * Layers. If this is not defined, a map with no layers will be rendered. Note\n * that layers are rendered in the order supplied, so if you want, for example,\n * a vector layer to appear on top of a tile layer, it must come after the tile\n * layer.\n * @property {number} [maxTilesLoading=16] Maximum number tiles to load\n * simultaneously.\n * @property {boolean} [loadTilesWhileAnimating=false] When set to `true`, tiles\n * will be loaded during animations. This may improve the user experience, but\n * can also make animations stutter on devices with slow memory.\n * @property {boolean} [loadTilesWhileInteracting=false] When set to `true`,\n * tiles will be loaded while interacting with the map. This may improve the\n * user experience, but can also make map panning and zooming choppy on devices\n * with slow memory.\n * @property {number} [moveTolerance=1] The minimum distance in pixels the\n * cursor must move to be detected as a map move event instead of a click.\n * Increasing this value can make it easier to click on the map.\n * @property {Collection<import(\"./Overlay.js\").default>|Array<import(\"./Overlay.js\").default>} [overlays]\n * Overlays initially added to the map. By default, no overlays are added.\n * @property {HTMLElement|string} [target] The container for the map, either the\n * element itself or the `id` of the element. If not specified at construction\n * time, {@link module:ol/Map~Map#setTarget} must be called for the map to be\n * rendered.\n * @property {View} [view] The map's view. No layer sources will be\n * fetched unless this is specified at construction time or through\n * {@link module:ol/Map~Map#setView}.\n */\n\n\n/**\n * @fires import(\"./MapBrowserEvent.js\").MapBrowserEvent\n * @fires import(\"./MapEvent.js\").MapEvent\n * @fires module:ol/render/Event~RenderEvent#postcompose\n * @fires module:ol/render/Event~RenderEvent#precompose\n * @fires module:ol/render/Event~RenderEvent#rendercomplete\n * @api\n */\nvar PluggableMap = /*@__PURE__*/(function (BaseObject) {\n function PluggableMap(options) {\n\n BaseObject.call(this);\n\n var optionsInternal = createOptionsInternal(options);\n\n /**\n * @type {number}\n * @private\n */\n this.maxTilesLoading_ = options.maxTilesLoading !== undefined ? options.maxTilesLoading : 16;\n\n /**\n * @type {boolean}\n * @private\n */\n this.loadTilesWhileAnimating_ =\n options.loadTilesWhileAnimating !== undefined ?\n options.loadTilesWhileAnimating : false;\n\n /**\n * @type {boolean}\n * @private\n */\n this.loadTilesWhileInteracting_ =\n options.loadTilesWhileInteracting !== undefined ?\n options.loadTilesWhileInteracting : false;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelRatio_ = options.pixelRatio !== undefined ?\n options.pixelRatio : DEVICE_PIXEL_RATIO;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.animationDelayKey_;\n\n /**\n * @private\n */\n this.animationDelay_ = function() {\n this.animationDelayKey_ = undefined;\n this.renderFrame_.call(this, Date.now());\n }.bind(this);\n\n /**\n * @private\n * @type {import(\"./transform.js\").Transform}\n */\n this.coordinateToPixelTransform_ = createTransform();\n\n /**\n * @private\n * @type {import(\"./transform.js\").Transform}\n */\n this.pixelToCoordinateTransform_ = createTransform();\n\n /**\n * @private\n * @type {number}\n */\n this.frameIndex_ = 0;\n\n /**\n * @private\n * @type {?FrameState}\n */\n this.frameState_ = null;\n\n /**\n * The extent at the previous 'moveend' event.\n * @private\n * @type {import(\"./extent.js\").Extent}\n */\n this.previousExtent_ = null;\n\n /**\n * @private\n * @type {?import(\"./events.js\").EventsKey}\n */\n this.viewPropertyListenerKey_ = null;\n\n /**\n * @private\n * @type {?import(\"./events.js\").EventsKey}\n */\n this.viewChangeListenerKey_ = null;\n\n /**\n * @private\n * @type {Array<import(\"./events.js\").EventsKey>}\n */\n this.layerGroupPropertyListenerKeys_ = null;\n\n /**\n * @private\n * @type {!HTMLElement}\n */\n this.viewport_ = document.createElement('div');\n this.viewport_.className = 'ol-viewport' + (TOUCH ? ' ol-touch' : '');\n this.viewport_.style.position = 'relative';\n this.viewport_.style.overflow = 'hidden';\n this.viewport_.style.width = '100%';\n this.viewport_.style.height = '100%';\n // prevent page zoom on IE >= 10 browsers\n this.viewport_.style.msTouchAction = 'none';\n this.viewport_.style.touchAction = 'none';\n\n /**\n * @private\n * @type {!HTMLElement}\n */\n this.overlayContainer_ = document.createElement('div');\n this.overlayContainer_.className = 'ol-overlaycontainer';\n this.viewport_.appendChild(this.overlayContainer_);\n\n /**\n * @private\n * @type {!HTMLElement}\n */\n this.overlayContainerStopEvent_ = document.createElement('div');\n this.overlayContainerStopEvent_.className = 'ol-overlaycontainer-stopevent';\n var overlayEvents = [\n EventType.CLICK,\n EventType.DBLCLICK,\n EventType.MOUSEDOWN,\n EventType.TOUCHSTART,\n EventType.MSPOINTERDOWN,\n MapBrowserEventType.POINTERDOWN,\n EventType.MOUSEWHEEL,\n EventType.WHEEL\n ];\n for (var i = 0, ii = overlayEvents.length; i < ii; ++i) {\n listen(this.overlayContainerStopEvent_, overlayEvents[i], stopPropagation);\n }\n this.viewport_.appendChild(this.overlayContainerStopEvent_);\n\n /**\n * @private\n * @type {MapBrowserEventHandler}\n */\n this.mapBrowserEventHandler_ = new MapBrowserEventHandler(this, options.moveTolerance);\n for (var key in MapBrowserEventType) {\n listen(this.mapBrowserEventHandler_, MapBrowserEventType[key],\n this.handleMapBrowserEvent, this);\n }\n\n /**\n * @private\n * @type {HTMLElement|Document}\n */\n this.keyboardEventTarget_ = optionsInternal.keyboardEventTarget;\n\n /**\n * @private\n * @type {Array<import(\"./events.js\").EventsKey>}\n */\n this.keyHandlerKeys_ = null;\n\n listen(this.viewport_, EventType.CONTEXTMENU, this.handleBrowserEvent, this);\n listen(this.viewport_, EventType.WHEEL, this.handleBrowserEvent, this);\n listen(this.viewport_, EventType.MOUSEWHEEL, this.handleBrowserEvent, this);\n\n /**\n * @type {Collection<import(\"./control/Control.js\").default>}\n * @protected\n */\n this.controls = optionsInternal.controls || new Collection();\n\n /**\n * @type {Collection<import(\"./interaction/Interaction.js\").default>}\n * @protected\n */\n this.interactions = optionsInternal.interactions || new Collection();\n\n /**\n * @type {Collection<import(\"./Overlay.js\").default>}\n * @private\n */\n this.overlays_ = optionsInternal.overlays;\n\n /**\n * A lookup of overlays by id.\n * @private\n * @type {Object<string, import(\"./Overlay.js\").default>}\n */\n this.overlayIdIndex_ = {};\n\n /**\n * @type {import(\"./renderer/Map.js\").default}\n * @private\n */\n this.renderer_ = this.createRenderer();\n\n /**\n * @type {function(Event)|undefined}\n * @private\n */\n this.handleResize_;\n\n /**\n * @private\n * @type {import(\"./coordinate.js\").Coordinate}\n */\n this.focus_ = null;\n\n /**\n * @private\n * @type {!Array<PostRenderFunction>}\n */\n this.postRenderFunctions_ = [];\n\n /**\n * @private\n * @type {TileQueue}\n */\n this.tileQueue_ = new TileQueue(\n this.getTilePriority.bind(this),\n this.handleTileChange_.bind(this));\n\n /**\n * Uids of features to skip at rendering time.\n * @type {Object<string, boolean>}\n * @private\n */\n this.skippedFeatureUids_ = {};\n\n listen(\n this, getChangeEventType(MapProperty.LAYERGROUP),\n this.handleLayerGroupChanged_, this);\n listen(this, getChangeEventType(MapProperty.VIEW),\n this.handleViewChanged_, this);\n listen(this, getChangeEventType(MapProperty.SIZE),\n this.handleSizeChanged_, this);\n listen(this, getChangeEventType(MapProperty.TARGET),\n this.handleTargetChanged_, this);\n\n // setProperties will trigger the rendering of the map if the map\n // is \"defined\" already.\n this.setProperties(optionsInternal.values);\n\n this.controls.forEach(\n /**\n * @param {import(\"./control/Control.js\").default} control Control.\n * @this {PluggableMap}\n */\n (function(control) {\n control.setMap(this);\n }).bind(this));\n\n listen(this.controls, CollectionEventType.ADD,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n event.element.setMap(this);\n }, this);\n\n listen(this.controls, CollectionEventType.REMOVE,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n event.element.setMap(null);\n }, this);\n\n this.interactions.forEach(\n /**\n * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction.\n * @this {PluggableMap}\n */\n (function(interaction) {\n interaction.setMap(this);\n }).bind(this));\n\n listen(this.interactions, CollectionEventType.ADD,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n event.element.setMap(this);\n }, this);\n\n listen(this.interactions, CollectionEventType.REMOVE,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n event.element.setMap(null);\n }, this);\n\n this.overlays_.forEach(this.addOverlayInternal_.bind(this));\n\n listen(this.overlays_, CollectionEventType.ADD,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n this.addOverlayInternal_(/** @type {import(\"./Overlay.js\").default} */ (event.element));\n }, this);\n\n listen(this.overlays_, CollectionEventType.REMOVE,\n /**\n * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n */\n function(event) {\n var overlay = /** @type {import(\"./Overlay.js\").default} */ (event.element);\n var id = overlay.getId();\n if (id !== undefined) {\n delete this.overlayIdIndex_[id.toString()];\n }\n event.element.setMap(null);\n }, this);\n\n }\n\n if ( BaseObject ) PluggableMap.__proto__ = BaseObject;\n PluggableMap.prototype = Object.create( BaseObject && BaseObject.prototype );\n PluggableMap.prototype.constructor = PluggableMap;\n\n /**\n * @abstract\n * @return {import(\"./renderer/Map.js\").default} The map renderer\n */\n PluggableMap.prototype.createRenderer = function createRenderer () {\n throw new Error('Use a map type that has a createRenderer method');\n };\n\n /**\n * Add the given control to the map.\n * @param {import(\"./control/Control.js\").default} control Control.\n * @api\n */\n PluggableMap.prototype.addControl = function addControl (control) {\n this.getControls().push(control);\n };\n\n /**\n * Add the given interaction to the map.\n * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction to add.\n * @api\n */\n PluggableMap.prototype.addInteraction = function addInteraction (interaction) {\n this.getInteractions().push(interaction);\n };\n\n /**\n * Adds the given layer to the top of this map. If you want to add a layer\n * elsewhere in the stack, use `getLayers()` and the methods available on\n * {@link module:ol/Collection~Collection}.\n * @param {import(\"./layer/Base.js\").default} layer Layer.\n * @api\n */\n PluggableMap.prototype.addLayer = function addLayer (layer) {\n var layers = this.getLayerGroup().getLayers();\n layers.push(layer);\n };\n\n /**\n * Add the given overlay to the map.\n * @param {import(\"./Overlay.js\").default} overlay Overlay.\n * @api\n */\n PluggableMap.prototype.addOverlay = function addOverlay (overlay) {\n this.getOverlays().push(overlay);\n };\n\n /**\n * This deals with map's overlay collection changes.\n * @param {import(\"./Overlay.js\").default} overlay Overlay.\n * @private\n */\n PluggableMap.prototype.addOverlayInternal_ = function addOverlayInternal_ (overlay) {\n var id = overlay.getId();\n if (id !== undefined) {\n this.overlayIdIndex_[id.toString()] = overlay;\n }\n overlay.setMap(this);\n };\n\n /**\n *\n * @inheritDoc\n */\n PluggableMap.prototype.disposeInternal = function disposeInternal () {\n this.mapBrowserEventHandler_.dispose();\n unlisten(this.viewport_, EventType.CONTEXTMENU, this.handleBrowserEvent, this);\n unlisten(this.viewport_, EventType.WHEEL, this.handleBrowserEvent, this);\n unlisten(this.viewport_, EventType.MOUSEWHEEL, this.handleBrowserEvent, this);\n if (this.handleResize_ !== undefined) {\n removeEventListener(EventType.RESIZE, this.handleResize_, false);\n this.handleResize_ = undefined;\n }\n if (this.animationDelayKey_) {\n cancelAnimationFrame(this.animationDelayKey_);\n this.animationDelayKey_ = undefined;\n }\n this.setTarget(null);\n BaseObject.prototype.disposeInternal.call(this);\n };\n\n /**\n * Detect features that intersect a pixel on the viewport, and execute a\n * callback with each intersecting feature. Layers included in the detection can\n * be configured through the `layerFilter` option in `opt_options`.\n * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n * @param {function(this: S, import(\"./Feature.js\").FeatureLike,\n * import(\"./layer/Layer.js\").default): T} callback Feature callback. The callback will be\n * called with two arguments. The first argument is one\n * {@link module:ol/Feature feature} or\n * {@link module:ol/render/Feature render feature} at the pixel, the second is\n * the {@link module:ol/layer/Layer layer} of the feature and will be null for\n * unmanaged layers. To stop detection, callback functions can return a\n * truthy value.\n * @param {AtPixelOptions=} opt_options Optional options.\n * @return {T|undefined} Callback result, i.e. the return value of last\n * callback execution, or the first truthy callback return value.\n * @template S,T\n * @api\n */\n PluggableMap.prototype.forEachFeatureAtPixel = function forEachFeatureAtPixel (pixel, callback, opt_options) {\n if (!this.frameState_) {\n return;\n }\n var coordinate = this.getCoordinateFromPixel(pixel);\n opt_options = opt_options !== undefined ? opt_options :\n /** @type {AtPixelOptions} */ ({});\n var hitTolerance = opt_options.hitTolerance !== undefined ?\n opt_options.hitTolerance * this.frameState_.pixelRatio : 0;\n var layerFilter = opt_options.layerFilter !== undefined ?\n opt_options.layerFilter : TRUE;\n return this.renderer_.forEachFeatureAtCoordinate(\n coordinate, this.frameState_, hitTolerance, callback, null,\n layerFilter, null);\n };\n\n /**\n * Get all features that intersect a pixel on the viewport.\n * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n * @param {AtPixelOptions=} opt_options Optional options.\n * @return {Array<import(\"./Feature.js\").FeatureLike>} The detected features or\n * `null` if none were found.\n * @api\n */\n PluggableMap.prototype.getFeaturesAtPixel = function getFeaturesAtPixel (pixel, opt_options) {\n var features = null;\n this.forEachFeatureAtPixel(pixel, function(feature) {\n if (!features) {\n features = [];\n }\n features.push(feature);\n }, opt_options);\n return features;\n };\n\n /**\n * Detect layers that have a color value at a pixel on the viewport, and\n * execute a callback with each matching layer. Layers included in the\n * detection can be configured through `opt_layerFilter`.\n * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n * @param {function(this: S, import(\"./layer/Layer.js\").default, (Uint8ClampedArray|Uint8Array)): T} callback\n * Layer callback. This callback will receive two arguments: first is the\n * {@link module:ol/layer/Layer layer}, second argument is an array representing\n * [R, G, B, A] pixel values (0 - 255) and will be `null` for layer types\n * that do not currently support this argument. To stop detection, callback\n * functions can return a truthy value.\n * @param {AtPixelOptions=} opt_options Configuration options.\n * @return {T|undefined} Callback result, i.e. the return value of last\n * callback execution, or the first truthy callback return value.\n * @template S,T\n * @api\n */\n PluggableMap.prototype.forEachLayerAtPixel = function forEachLayerAtPixel (pixel, callback, opt_options) {\n if (!this.frameState_) {\n return;\n }\n var options = opt_options || /** @type {AtPixelOptions} */ ({});\n var hitTolerance = options.hitTolerance !== undefined ?\n opt_options.hitTolerance * this.frameState_.pixelRatio : 0;\n var layerFilter = options.layerFilter || TRUE;\n return this.renderer_.forEachLayerAtPixel(\n pixel, this.frameState_, hitTolerance, callback, null, layerFilter, null);\n };\n\n /**\n * Detect if features intersect a pixel on the viewport. Layers included in the\n * detection can be configured through `opt_layerFilter`.\n * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n * @param {AtPixelOptions=} opt_options Optional options.\n * @return {boolean} Is there a feature at the given pixel?\n * @template U\n * @api\n */\n PluggableMap.prototype.hasFeatureAtPixel = function hasFeatureAtPixel (pixel, opt_options) {\n if (!this.frameState_) {\n return false;\n }\n var coordinate = this.getCoordinateFromPixel(pixel);\n opt_options = opt_options !== undefined ? opt_options :\n /** @type {AtPixelOptions} */ ({});\n var layerFilter = opt_options.layerFilter !== undefined ? opt_options.layerFilter : TRUE;\n var hitTolerance = opt_options.hitTolerance !== undefined ?\n opt_options.hitTolerance * this.frameState_.pixelRatio : 0;\n return this.renderer_.hasFeatureAtCoordinate(\n coordinate, this.frameState_, hitTolerance, layerFilter, null);\n };\n\n /**\n * Returns the coordinate in view projection for a browser event.\n * @param {Event} event Event.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate.\n * @api\n */\n PluggableMap.prototype.getEventCoordinate = function getEventCoordinate (event) {\n return this.getCoordinateFromPixel(this.getEventPixel(event));\n };\n\n /**\n * Returns the map pixel position for a browser event relative to the viewport.\n * @param {Event|TouchEvent} event Event.\n * @return {import(\"./pixel.js\").Pixel} Pixel.\n * @api\n */\n PluggableMap.prototype.getEventPixel = function getEventPixel (event) {\n var viewportPosition = this.viewport_.getBoundingClientRect();\n var eventPosition = 'changedTouches' in event ?\n /** @type {TouchEvent} */ (event).changedTouches[0] :\n /** @type {MouseEvent} */ (event);\n\n return [\n eventPosition.clientX - viewportPosition.left,\n eventPosition.clientY - viewportPosition.top\n ];\n };\n\n /**\n * Get the target in which this map is rendered.\n * Note that this returns what is entered as an option or in setTarget:\n * if that was an element, it returns an element; if a string, it returns that.\n * @return {HTMLElement|string|undefined} The Element or id of the Element that the\n * map is rendered in.\n * @observable\n * @api\n */\n PluggableMap.prototype.getTarget = function getTarget () {\n return /** @type {HTMLElement|string|undefined} */ (this.get(MapProperty.TARGET));\n };\n\n /**\n * Get the DOM element into which this map is rendered. In contrast to\n * `getTarget` this method always return an `Element`, or `null` if the\n * map has no target.\n * @return {HTMLElement} The element that the map is rendered in.\n * @api\n */\n PluggableMap.prototype.getTargetElement = function getTargetElement () {\n var target = this.getTarget();\n if (target !== undefined) {\n return typeof target === 'string' ? document.getElementById(target) : target;\n } else {\n return null;\n }\n };\n\n /**\n * Get the coordinate for a given pixel. This returns a coordinate in the\n * map view projection.\n * @param {import(\"./pixel.js\").Pixel} pixel Pixel position in the map viewport.\n * @return {import(\"./coordinate.js\").Coordinate} The coordinate for the pixel position.\n * @api\n */\n PluggableMap.prototype.getCoordinateFromPixel = function getCoordinateFromPixel (pixel) {\n var frameState = this.frameState_;\n if (!frameState) {\n return null;\n } else {\n return applyTransform(frameState.pixelToCoordinateTransform, pixel.slice());\n }\n };\n\n /**\n * Get the map controls. Modifying this collection changes the controls\n * associated with the map.\n * @return {Collection<import(\"./control/Control.js\").default>} Controls.\n * @api\n */\n PluggableMap.prototype.getControls = function getControls () {\n return this.controls;\n };\n\n /**\n * Get the map overlays. Modifying this collection changes the overlays\n * associated with the map.\n * @return {Collection<import(\"./Overlay.js\").default>} Overlays.\n * @api\n */\n PluggableMap.prototype.getOverlays = function getOverlays () {\n return this.overlays_;\n };\n\n /**\n * Get an overlay by its identifier (the value returned by overlay.getId()).\n * Note that the index treats string and numeric identifiers as the same. So\n * `map.getOverlayById(2)` will return an overlay with id `'2'` or `2`.\n * @param {string|number} id Overlay identifier.\n * @return {import(\"./Overlay.js\").default} Overlay.\n * @api\n */\n PluggableMap.prototype.getOverlayById = function getOverlayById (id) {\n var overlay = this.overlayIdIndex_[id.toString()];\n return overlay !== undefined ? overlay : null;\n };\n\n /**\n * Get the map interactions. Modifying this collection changes the interactions\n * associated with the map.\n *\n * Interactions are used for e.g. pan, zoom and rotate.\n * @return {Collection<import(\"./interaction/Interaction.js\").default>} Interactions.\n * @api\n */\n PluggableMap.prototype.getInteractions = function getInteractions () {\n return this.interactions;\n };\n\n /**\n * Get the layergroup associated with this map.\n * @return {LayerGroup} A layer group containing the layers in this map.\n * @observable\n * @api\n */\n PluggableMap.prototype.getLayerGroup = function getLayerGroup () {\n return (\n /** @type {LayerGroup} */ (this.get(MapProperty.LAYERGROUP))\n );\n };\n\n /**\n * Get the collection of layers associated with this map.\n * @return {!Collection<import(\"./layer/Base.js\").default>} Layers.\n * @api\n */\n PluggableMap.prototype.getLayers = function getLayers () {\n var layers = this.getLayerGroup().getLayers();\n return layers;\n };\n\n /**\n * Get the pixel for a coordinate. This takes a coordinate in the map view\n * projection and returns the corresponding pixel.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate A map coordinate.\n * @return {import(\"./pixel.js\").Pixel} A pixel position in the map viewport.\n * @api\n */\n PluggableMap.prototype.getPixelFromCoordinate = function getPixelFromCoordinate (coordinate) {\n var frameState = this.frameState_;\n if (!frameState) {\n return null;\n } else {\n return applyTransform(frameState.coordinateToPixelTransform, coordinate.slice(0, 2));\n }\n };\n\n /**\n * Get the map renderer.\n * @return {import(\"./renderer/Map.js\").default} Renderer\n */\n PluggableMap.prototype.getRenderer = function getRenderer () {\n return this.renderer_;\n };\n\n /**\n * Get the size of this map.\n * @return {import(\"./size.js\").Size|undefined} The size in pixels of the map in the DOM.\n * @observable\n * @api\n */\n PluggableMap.prototype.getSize = function getSize () {\n return (\n /** @type {import(\"./size.js\").Size|undefined} */ (this.get(MapProperty.SIZE))\n );\n };\n\n /**\n * Get the view associated with this map. A view manages properties such as\n * center and resolution.\n * @return {View} The view that controls this map.\n * @observable\n * @api\n */\n PluggableMap.prototype.getView = function getView () {\n return (\n /** @type {View} */ (this.get(MapProperty.VIEW))\n );\n };\n\n /**\n * Get the element that serves as the map viewport.\n * @return {HTMLElement} Viewport.\n * @api\n */\n PluggableMap.prototype.getViewport = function getViewport () {\n return this.viewport_;\n };\n\n /**\n * Get the element that serves as the container for overlays. Elements added to\n * this container will let mousedown and touchstart events through to the map,\n * so clicks and gestures on an overlay will trigger {@link module:ol/MapBrowserEvent~MapBrowserEvent}\n * events.\n * @return {!HTMLElement} The map's overlay container.\n */\n PluggableMap.prototype.getOverlayContainer = function getOverlayContainer () {\n return this.overlayContainer_;\n };\n\n /**\n * Get the element that serves as a container for overlays that don't allow\n * event propagation. Elements added to this container won't let mousedown and\n * touchstart events through to the map, so clicks and gestures on an overlay\n * don't trigger any {@link module:ol/MapBrowserEvent~MapBrowserEvent}.\n * @return {!HTMLElement} The map's overlay container that stops events.\n */\n PluggableMap.prototype.getOverlayContainerStopEvent = function getOverlayContainerStopEvent () {\n return this.overlayContainerStopEvent_;\n };\n\n /**\n * @param {import(\"./Tile.js\").default} tile Tile.\n * @param {string} tileSourceKey Tile source key.\n * @param {import(\"./coordinate.js\").Coordinate} tileCenter Tile center.\n * @param {number} tileResolution Tile resolution.\n * @return {number} Tile priority.\n */\n PluggableMap.prototype.getTilePriority = function getTilePriority (tile, tileSourceKey, tileCenter, tileResolution) {\n // Filter out tiles at higher zoom levels than the current zoom level, or that\n // are outside the visible extent.\n var frameState = this.frameState_;\n if (!frameState || !(tileSourceKey in frameState.wantedTiles)) {\n return DROP;\n }\n if (!frameState.wantedTiles[tileSourceKey][tile.getKey()]) {\n return DROP;\n }\n // Prioritize the highest zoom level tiles closest to the focus.\n // Tiles at higher zoom levels are prioritized using Math.log(tileResolution).\n // Within a zoom level, tiles are prioritized by the distance in pixels\n // between the center of the tile and the focus. The factor of 65536 means\n // that the prioritization should behave as desired for tiles up to\n // 65536 * Math.log(2) = 45426 pixels from the focus.\n var deltaX = tileCenter[0] - frameState.focus[0];\n var deltaY = tileCenter[1] - frameState.focus[1];\n return 65536 * Math.log(tileResolution) +\n Math.sqrt(deltaX * deltaX + deltaY * deltaY) / tileResolution;\n };\n\n /**\n * @param {Event} browserEvent Browser event.\n * @param {string=} opt_type Type.\n */\n PluggableMap.prototype.handleBrowserEvent = function handleBrowserEvent (browserEvent, opt_type) {\n var type = opt_type || browserEvent.type;\n var mapBrowserEvent = new MapBrowserEvent(type, this, browserEvent);\n this.handleMapBrowserEvent(mapBrowserEvent);\n };\n\n /**\n * @param {MapBrowserEvent} mapBrowserEvent The event to handle.\n */\n PluggableMap.prototype.handleMapBrowserEvent = function handleMapBrowserEvent (mapBrowserEvent) {\n if (!this.frameState_) {\n // With no view defined, we cannot translate pixels into geographical\n // coordinates so interactions cannot be used.\n return;\n }\n this.focus_ = mapBrowserEvent.coordinate;\n mapBrowserEvent.frameState = this.frameState_;\n var interactionsArray = this.getInteractions().getArray();\n if (this.dispatchEvent(mapBrowserEvent) !== false) {\n for (var i = interactionsArray.length - 1; i >= 0; i--) {\n var interaction = interactionsArray[i];\n if (!interaction.getActive()) {\n continue;\n }\n var cont = interaction.handleEvent(mapBrowserEvent);\n if (!cont) {\n break;\n }\n }\n }\n };\n\n /**\n * @protected\n */\n PluggableMap.prototype.handlePostRender = function handlePostRender () {\n\n var frameState = this.frameState_;\n\n // Manage the tile queue\n // Image loads are expensive and a limited resource, so try to use them\n // efficiently:\n // * When the view is static we allow a large number of parallel tile loads\n // to complete the frame as quickly as possible.\n // * When animating or interacting, image loads can cause janks, so we reduce\n // the maximum number of loads per frame and limit the number of parallel\n // tile loads to remain reactive to view changes and to reduce the chance of\n // loading tiles that will quickly disappear from view.\n var tileQueue = this.tileQueue_;\n if (!tileQueue.isEmpty()) {\n var maxTotalLoading = this.maxTilesLoading_;\n var maxNewLoads = maxTotalLoading;\n if (frameState) {\n var hints = frameState.viewHints;\n if (hints[ViewHint.ANIMATING]) {\n maxTotalLoading = this.loadTilesWhileAnimating_ ? 8 : 0;\n maxNewLoads = 2;\n }\n if (hints[ViewHint.INTERACTING]) {\n maxTotalLoading = this.loadTilesWhileInteracting_ ? 8 : 0;\n maxNewLoads = 2;\n }\n }\n if (tileQueue.getTilesLoading() < maxTotalLoading) {\n tileQueue.reprioritize(); // FIXME only call if view has changed\n tileQueue.loadMoreTiles(maxTotalLoading, maxNewLoads);\n }\n }\n if (frameState && this.hasListener(RenderEventType.RENDERCOMPLETE) && !frameState.animate &&\n !this.tileQueue_.getTilesLoading() && !getLoading(this.getLayers().getArray())) {\n this.renderer_.dispatchRenderEvent(RenderEventType.RENDERCOMPLETE, frameState);\n }\n\n var postRenderFunctions = this.postRenderFunctions_;\n for (var i = 0, ii = postRenderFunctions.length; i < ii; ++i) {\n postRenderFunctions[i](this, frameState);\n }\n postRenderFunctions.length = 0;\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleSizeChanged_ = function handleSizeChanged_ () {\n this.render();\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleTargetChanged_ = function handleTargetChanged_ () {\n // target may be undefined, null, a string or an Element.\n // If it's a string we convert it to an Element before proceeding.\n // If it's not now an Element we remove the viewport from the DOM.\n // If it's an Element we append the viewport element to it.\n\n var targetElement;\n if (this.getTarget()) {\n targetElement = this.getTargetElement();\n }\n\n if (this.keyHandlerKeys_) {\n for (var i = 0, ii = this.keyHandlerKeys_.length; i < ii; ++i) {\n unlistenByKey(this.keyHandlerKeys_[i]);\n }\n this.keyHandlerKeys_ = null;\n }\n\n if (!targetElement) {\n this.renderer_.removeLayerRenderers();\n removeNode(this.viewport_);\n if (this.handleResize_ !== undefined) {\n removeEventListener(EventType.RESIZE, this.handleResize_, false);\n this.handleResize_ = undefined;\n }\n } else {\n targetElement.appendChild(this.viewport_);\n\n var keyboardEventTarget = !this.keyboardEventTarget_ ?\n targetElement : this.keyboardEventTarget_;\n this.keyHandlerKeys_ = [\n listen(keyboardEventTarget, EventType.KEYDOWN, this.handleBrowserEvent, this),\n listen(keyboardEventTarget, EventType.KEYPRESS, this.handleBrowserEvent, this)\n ];\n\n if (!this.handleResize_) {\n this.handleResize_ = this.updateSize.bind(this);\n window.addEventListener(EventType.RESIZE, this.handleResize_, false);\n }\n }\n\n this.updateSize();\n // updateSize calls setSize, so no need to call this.render\n // ourselves here.\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleTileChange_ = function handleTileChange_ () {\n this.render();\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleViewPropertyChanged_ = function handleViewPropertyChanged_ () {\n this.render();\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleViewChanged_ = function handleViewChanged_ () {\n if (this.viewPropertyListenerKey_) {\n unlistenByKey(this.viewPropertyListenerKey_);\n this.viewPropertyListenerKey_ = null;\n }\n if (this.viewChangeListenerKey_) {\n unlistenByKey(this.viewChangeListenerKey_);\n this.viewChangeListenerKey_ = null;\n }\n var view = this.getView();\n if (view) {\n this.viewport_.setAttribute('data-view', getUid(view));\n this.viewPropertyListenerKey_ = listen(\n view, ObjectEventType.PROPERTYCHANGE,\n this.handleViewPropertyChanged_, this);\n this.viewChangeListenerKey_ = listen(\n view, EventType.CHANGE,\n this.handleViewPropertyChanged_, this);\n }\n this.render();\n };\n\n /**\n * @private\n */\n PluggableMap.prototype.handleLayerGroupChanged_ = function handleLayerGroupChanged_ () {\n if (this.layerGroupPropertyListenerKeys_) {\n this.layerGroupPropertyListenerKeys_.forEach(unlistenByKey);\n this.layerGroupPropertyListenerKeys_ = null;\n }\n var layerGroup = this.getLayerGroup();\n if (layerGroup) {\n this.layerGroupPropertyListenerKeys_ = [\n listen(\n layerGroup, ObjectEventType.PROPERTYCHANGE,\n this.render, this),\n listen(\n layerGroup, EventType.CHANGE,\n this.render, this)\n ];\n }\n this.render();\n };\n\n /**\n * @return {boolean} Is rendered.\n */\n PluggableMap.prototype.isRendered = function isRendered () {\n return !!this.frameState_;\n };\n\n /**\n * Requests an immediate render in a synchronous manner.\n * @api\n */\n PluggableMap.prototype.renderSync = function renderSync () {\n if (this.animationDelayKey_) {\n cancelAnimationFrame(this.animationDelayKey_);\n }\n this.animationDelay_();\n };\n\n /**\n * Request a map rendering (at the next animation frame).\n * @api\n */\n PluggableMap.prototype.render = function render () {\n if (this.animationDelayKey_ === undefined) {\n this.animationDelayKey_ = requestAnimationFrame(this.animationDelay_);\n }\n };\n\n /**\n * Remove the given control from the map.\n * @param {import(\"./control/Control.js\").default} control Control.\n * @return {import(\"./control/Control.js\").default|undefined} The removed control (or undefined\n * if the control was not found).\n * @api\n */\n PluggableMap.prototype.removeControl = function removeControl (control) {\n return this.getControls().remove(control);\n };\n\n /**\n * Remove the given interaction from the map.\n * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction to remove.\n * @return {import(\"./interaction/Interaction.js\").default|undefined} The removed interaction (or\n * undefined if the interaction was not found).\n * @api\n */\n PluggableMap.prototype.removeInteraction = function removeInteraction (interaction) {\n return this.getInteractions().remove(interaction);\n };\n\n /**\n * Removes the given layer from the map.\n * @param {import(\"./layer/Base.js\").default} layer Layer.\n * @return {import(\"./layer/Base.js\").default|undefined} The removed layer (or undefined if the\n * layer was not found).\n * @api\n */\n PluggableMap.prototype.removeLayer = function removeLayer (layer) {\n var layers = this.getLayerGroup().getLayers();\n return layers.remove(layer);\n };\n\n /**\n * Remove the given overlay from the map.\n * @param {import(\"./Overlay.js\").default} overlay Overlay.\n * @return {import(\"./Overlay.js\").default|undefined} The removed overlay (or undefined\n * if the overlay was not found).\n * @api\n */\n PluggableMap.prototype.removeOverlay = function removeOverlay (overlay) {\n return this.getOverlays().remove(overlay);\n };\n\n /**\n * @param {number} time Time.\n * @private\n */\n PluggableMap.prototype.renderFrame_ = function renderFrame_ (time) {\n var viewState;\n\n var size = this.getSize();\n var view = this.getView();\n var extent = createEmpty();\n var previousFrameState = this.frameState_;\n /** @type {?FrameState} */\n var frameState = null;\n if (size !== undefined && hasArea(size) && view && view.isDef()) {\n var viewHints = view.getHints(this.frameState_ ? this.frameState_.viewHints : undefined);\n var layerStatesArray = this.getLayerGroup().getLayerStatesArray();\n var layerStates = {};\n for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n layerStates[getUid(layerStatesArray[i].layer)] = layerStatesArray[i];\n }\n viewState = view.getState(this.pixelRatio_);\n frameState = /** @type {FrameState} */ ({\n animate: false,\n coordinateToPixelTransform: this.coordinateToPixelTransform_,\n extent: extent,\n focus: this.focus_ ? this.focus_ : viewState.center,\n index: this.frameIndex_++,\n layerStates: layerStates,\n layerStatesArray: layerStatesArray,\n pixelRatio: this.pixelRatio_,\n pixelToCoordinateTransform: this.pixelToCoordinateTransform_,\n postRenderFunctions: [],\n size: size,\n skippedFeatureUids: this.skippedFeatureUids_,\n tileQueue: this.tileQueue_,\n time: time,\n usedTiles: {},\n viewState: viewState,\n viewHints: viewHints,\n wantedTiles: {}\n });\n }\n\n if (frameState) {\n frameState.extent = getForViewAndSize(viewState.center,\n viewState.resolution, viewState.rotation, frameState.size, extent);\n }\n\n this.frameState_ = frameState;\n this.renderer_.renderFrame(frameState);\n\n if (frameState) {\n if (frameState.animate) {\n this.render();\n }\n Array.prototype.push.apply(this.postRenderFunctions_, frameState.postRenderFunctions);\n\n if (previousFrameState) {\n var moveStart = !this.previousExtent_ ||\n (!isEmpty(this.previousExtent_) &&\n !equals(frameState.extent, this.previousExtent_));\n if (moveStart) {\n this.dispatchEvent(\n new MapEvent(MapEventType.MOVESTART, this, previousFrameState));\n this.previousExtent_ = createOrUpdateEmpty(this.previousExtent_);\n }\n }\n\n var idle = this.previousExtent_ &&\n !frameState.viewHints[ViewHint.ANIMATING] &&\n !frameState.viewHints[ViewHint.INTERACTING] &&\n !equals(frameState.extent, this.previousExtent_);\n\n if (idle) {\n this.dispatchEvent(new MapEvent(MapEventType.MOVEEND, this, frameState));\n clone(frameState.extent, this.previousExtent_);\n }\n }\n\n this.dispatchEvent(new MapEvent(MapEventType.POSTRENDER, this, frameState));\n\n setTimeout(this.handlePostRender.bind(this), 0);\n\n };\n\n /**\n * Sets the layergroup of this map.\n * @param {LayerGroup} layerGroup A layer group containing the layers in this map.\n * @observable\n * @api\n */\n PluggableMap.prototype.setLayerGroup = function setLayerGroup (layerGroup) {\n this.set(MapProperty.LAYERGROUP, layerGroup);\n };\n\n /**\n * Set the size of this map.\n * @param {import(\"./size.js\").Size|undefined} size The size in pixels of the map in the DOM.\n * @observable\n * @api\n */\n PluggableMap.prototype.setSize = function setSize (size) {\n this.set(MapProperty.SIZE, size);\n };\n\n /**\n * Set the target element to render this map into.\n * @param {HTMLElement|string|undefined} target The Element or id of the Element\n * that the map is rendered in.\n * @observable\n * @api\n */\n PluggableMap.prototype.setTarget = function setTarget (target) {\n this.set(MapProperty.TARGET, target);\n };\n\n /**\n * Set the view for this map.\n * @param {View} view The view that controls this map.\n * @observable\n * @api\n */\n PluggableMap.prototype.setView = function setView (view) {\n this.set(MapProperty.VIEW, view);\n };\n\n /**\n * @param {import(\"./Feature.js\").default} feature Feature.\n */\n PluggableMap.prototype.skipFeature = function skipFeature (feature) {\n this.skippedFeatureUids_[getUid(feature)] = true;\n this.render();\n };\n\n /**\n * Force a recalculation of the map viewport size. This should be called when\n * third-party code changes the size of the map viewport.\n * @api\n */\n PluggableMap.prototype.updateSize = function updateSize () {\n var targetElement = this.getTargetElement();\n\n if (!targetElement) {\n this.setSize(undefined);\n } else {\n var computedStyle = getComputedStyle(targetElement);\n this.setSize([\n targetElement.offsetWidth -\n parseFloat(computedStyle['borderLeftWidth']) -\n parseFloat(computedStyle['paddingLeft']) -\n parseFloat(computedStyle['paddingRight']) -\n parseFloat(computedStyle['borderRightWidth']),\n targetElement.offsetHeight -\n parseFloat(computedStyle['borderTopWidth']) -\n parseFloat(computedStyle['paddingTop']) -\n parseFloat(computedStyle['paddingBottom']) -\n parseFloat(computedStyle['borderBottomWidth'])\n ]);\n }\n };\n\n /**\n * @param {import(\"./Feature.js\").default} feature Feature.\n */\n PluggableMap.prototype.unskipFeature = function unskipFeature (feature) {\n delete this.skippedFeatureUids_[getUid(feature)];\n this.render();\n };\n\n return PluggableMap;\n}(BaseObject));\n\n\n/**\n * @param {MapOptions} options Map options.\n * @return {MapOptionsInternal} Internal map options.\n */\nfunction createOptionsInternal(options) {\n\n /**\n * @type {HTMLElement|Document}\n */\n var keyboardEventTarget = null;\n if (options.keyboardEventTarget !== undefined) {\n keyboardEventTarget = typeof options.keyboardEventTarget === 'string' ?\n document.getElementById(options.keyboardEventTarget) :\n options.keyboardEventTarget;\n }\n\n /**\n * @type {Object<string, *>}\n */\n var values = {};\n\n var layerGroup = options.layers && typeof /** @type {?} */ (options.layers).getLayers === 'function' ?\n /** @type {LayerGroup} */ (options.layers) : new LayerGroup({layers: /** @type {Collection} */ (options.layers)});\n values[MapProperty.LAYERGROUP] = layerGroup;\n\n values[MapProperty.TARGET] = options.target;\n\n values[MapProperty.VIEW] = options.view !== undefined ?\n options.view : new View();\n\n var controls;\n if (options.controls !== undefined) {\n if (Array.isArray(options.controls)) {\n controls = new Collection(options.controls.slice());\n } else {\n assert(typeof /** @type {?} */ (options.controls).getArray === 'function',\n 47); // Expected `controls` to be an array or an `import(\"./Collection.js\").Collection`\n controls = /** @type {Collection} */ (options.controls);\n }\n }\n\n var interactions;\n if (options.interactions !== undefined) {\n if (Array.isArray(options.interactions)) {\n interactions = new Collection(options.interactions.slice());\n } else {\n assert(typeof /** @type {?} */ (options.interactions).getArray === 'function',\n 48); // Expected `interactions` to be an array or an `import(\"./Collection.js\").Collection`\n interactions = /** @type {Collection} */ (options.interactions);\n }\n }\n\n var overlays;\n if (options.overlays !== undefined) {\n if (Array.isArray(options.overlays)) {\n overlays = new Collection(options.overlays.slice());\n } else {\n assert(typeof /** @type {?} */ (options.overlays).getArray === 'function',\n 49); // Expected `overlays` to be an array or an `import(\"./Collection.js\").Collection`\n overlays = options.overlays;\n }\n } else {\n overlays = new Collection();\n }\n\n return {\n controls: controls,\n interactions: interactions,\n keyboardEventTarget: keyboardEventTarget,\n overlays: overlays,\n values: values\n };\n\n}\nexport default PluggableMap;\n\n/**\n * @param {Array<import(\"./layer/Base.js\").default>} layers Layers.\n * @return {boolean} Layers have sources that are still loading.\n */\nfunction getLoading(layers) {\n for (var i = 0, ii = layers.length; i < ii; ++i) {\n var layer = layers[i];\n if (typeof /** @type {?} */ (layer).getLayers === 'function') {\n return getLoading(/** @type {LayerGroup} */ (layer).getLayers().getArray());\n } else {\n var source = /** @type {import(\"./layer/Layer.js\").default} */ (\n layer).getSource();\n if (source && source.loading) {\n return true;\n }\n }\n }\n return false;\n}\n\n//# sourceMappingURL=PluggableMap.js.map","/**\n * @module ol/control/Control\n */\nimport {VOID} from '../functions.js';\nimport MapEventType from '../MapEventType.js';\nimport BaseObject from '../Object.js';\nimport {removeNode} from '../dom.js';\nimport {listen, unlistenByKey} from '../events.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {HTMLElement} [element] The element is the control's\n * container element. This only needs to be specified if you're developing\n * a custom control.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when\n * the control should be re-rendered. This is called in a `requestAnimationFrame`\n * callback.\n * @property {HTMLElement|string} [target] Specify a target if you want\n * the control to be rendered outside of the map's viewport.\n */\n\n\n/**\n * @classdesc\n * A control is a visible widget with a DOM element in a fixed position on the\n * screen. They can involve user input (buttons), or be informational only;\n * the position is determined using CSS. By default these are placed in the\n * container with CSS class name `ol-overlaycontainer-stopevent`, but can use\n * any outside DOM element.\n *\n * This is the base class for controls. You can use it for simple custom\n * controls by creating the element with listeners, creating an instance:\n * ```js\n * var myControl = new Control({element: myElement});\n * ```\n * and then adding this to the map.\n *\n * The main advantage of having this as a control rather than a simple separate\n * DOM element is that preventing propagation is handled for you. Controls\n * will also be objects in a {@link module:ol/Collection~Collection}, so you can use their methods.\n *\n * You can also extend this base for your own control class. See\n * examples/custom-controls for an example of how to do this.\n *\n * @api\n */\nvar Control = /*@__PURE__*/(function (BaseObject) {\n function Control(options) {\n\n BaseObject.call(this);\n\n /**\n * @protected\n * @type {HTMLElement}\n */\n this.element = options.element ? options.element : null;\n\n /**\n * @private\n * @type {HTMLElement}\n */\n this.target_ = null;\n\n /**\n * @private\n * @type {import(\"../PluggableMap.js\").default}\n */\n this.map_ = null;\n\n /**\n * @protected\n * @type {!Array<import(\"../events.js\").EventsKey>}\n */\n this.listenerKeys = [];\n\n /**\n * @type {function(import(\"../MapEvent.js\").default)}\n */\n this.render = options.render ? options.render : VOID;\n\n if (options.target) {\n this.setTarget(options.target);\n }\n\n }\n\n if ( BaseObject ) Control.__proto__ = BaseObject;\n Control.prototype = Object.create( BaseObject && BaseObject.prototype );\n Control.prototype.constructor = Control;\n\n /**\n * @inheritDoc\n */\n Control.prototype.disposeInternal = function disposeInternal () {\n removeNode(this.element);\n BaseObject.prototype.disposeInternal.call(this);\n };\n\n /**\n * Get the map associated with this control.\n * @return {import(\"../PluggableMap.js\").default} Map.\n * @api\n */\n Control.prototype.getMap = function getMap () {\n return this.map_;\n };\n\n /**\n * Remove the control from its current map and attach it to the new map.\n * Subclasses may set up event handlers to get notified about changes to\n * the map here.\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @api\n */\n Control.prototype.setMap = function setMap (map) {\n if (this.map_) {\n removeNode(this.element);\n }\n for (var i = 0, ii = this.listenerKeys.length; i < ii; ++i) {\n unlistenByKey(this.listenerKeys[i]);\n }\n this.listenerKeys.length = 0;\n this.map_ = map;\n if (this.map_) {\n var target = this.target_ ?\n this.target_ : map.getOverlayContainerStopEvent();\n target.appendChild(this.element);\n if (this.render !== VOID) {\n this.listenerKeys.push(listen(map,\n MapEventType.POSTRENDER, this.render, this));\n }\n map.render();\n }\n };\n\n /**\n * This function is used to set a target element for the control. It has no\n * effect if it is called after the control has been added to the map (i.e.\n * after `setMap` is called on the control). If no `target` is set in the\n * options passed to the control constructor and if `setTarget` is not called\n * then the control is added to the map's overlay container.\n * @param {HTMLElement|string} target Target.\n * @api\n */\n Control.prototype.setTarget = function setTarget (target) {\n this.target_ = typeof target === 'string' ?\n document.getElementById(target) :\n target;\n };\n\n return Control;\n}(BaseObject));\n\n\nexport default Control;\n\n//# sourceMappingURL=Control.js.map","/**\n * @module ol/css\n */\n\n\n/**\n * The CSS class for hidden feature.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_HIDDEN = 'ol-hidden';\n\n\n/**\n * The CSS class that we'll give the DOM elements to have them selectable.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_SELECTABLE = 'ol-selectable';\n\n\n/**\n * The CSS class that we'll give the DOM elements to have them unselectable.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_UNSELECTABLE = 'ol-unselectable';\n\n\n/**\n * The CSS class for unsupported feature.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_UNSUPPORTED = 'ol-unsupported';\n\n\n/**\n * The CSS class for controls.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_CONTROL = 'ol-control';\n\n\n/**\n * The CSS class that we'll give the DOM elements that are collapsed, i.e.\n * to those elements which usually can be expanded.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_COLLAPSED = 'ol-collapsed';\n\n\n/**\n * Get the list of font families from a font spec. Note that this doesn't work\n * for font families that have commas in them.\n * @param {string} The CSS font property.\n * @return {Object<string>} The font families (or null if the input spec is invalid).\n */\nexport var getFontFamilies = (function() {\n var style;\n var cache = {};\n return function(font) {\n if (!style) {\n style = document.createElement('div').style;\n }\n if (!(font in cache)) {\n style.font = font;\n var family = style.fontFamily;\n style.font = '';\n if (!family) {\n return null;\n }\n cache[font] = family.split(/,\\s?/);\n }\n return cache[font];\n };\n})();\n\n//# sourceMappingURL=css.js.map","/**\n * @module ol/layer/Layer\n */\nimport {listen, unlistenByKey} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {getUid} from '../util.js';\nimport {getChangeEventType} from '../Object.js';\nimport BaseLayer from './Base.js';\nimport LayerProperty from './Property.js';\nimport {assign} from '../obj.js';\nimport RenderEventType from '../render/EventType.js';\nimport SourceState from '../source/State.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering. The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering. At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {import(\"../source/Source.js\").default} [source] Source for this layer. If not provided to the constructor,\n * the source can be set by calling {@link module:ol/layer/Layer#setSource layer.setSource(source)} after\n * construction.\n * @property {import(\"../PluggableMap.js\").default} [map] Map.\n */\n\n\n/**\n * @typedef {Object} State\n * @property {import(\"./Base.js\").default} layer\n * @property {number} opacity\n * @property {SourceState} sourceState\n * @property {boolean} visible\n * @property {boolean} managed\n * @property {import(\"../extent.js\").Extent} [extent]\n * @property {number} zIndex\n * @property {number} maxResolution\n * @property {number} minResolution\n */\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * A visual representation of raster or vector map data.\n * Layers group together those properties that pertain to how the data is to be\n * displayed, irrespective of the source of that data.\n *\n * Layers are usually added to a map with {@link module:ol/Map#addLayer}. Components\n * like {@link module:ol/interaction/Select~Select} use unmanaged layers\n * internally. These unmanaged layers are associated with the map using\n * {@link module:ol/layer/Layer~Layer#setMap} instead.\n *\n * A generic `change` event is fired when the state of the source changes.\n *\n * @fires import(\"../render/Event.js\").RenderEvent\n */\nvar Layer = /*@__PURE__*/(function (BaseLayer) {\n function Layer(options) {\n\n var baseOptions = assign({}, options);\n delete baseOptions.source;\n\n BaseLayer.call(this, baseOptions);\n\n /**\n * @private\n * @type {?import(\"../events.js\").EventsKey}\n */\n this.mapPrecomposeKey_ = null;\n\n /**\n * @private\n * @type {?import(\"../events.js\").EventsKey}\n */\n this.mapRenderKey_ = null;\n\n /**\n * @private\n * @type {?import(\"../events.js\").EventsKey}\n */\n this.sourceChangeKey_ = null;\n\n if (options.map) {\n this.setMap(options.map);\n }\n\n listen(this,\n getChangeEventType(LayerProperty.SOURCE),\n this.handleSourcePropertyChange_, this);\n\n var source = options.source ? options.source : null;\n this.setSource(source);\n }\n\n if ( BaseLayer ) Layer.__proto__ = BaseLayer;\n Layer.prototype = Object.create( BaseLayer && BaseLayer.prototype );\n Layer.prototype.constructor = Layer;\n\n /**\n * @inheritDoc\n */\n Layer.prototype.getLayersArray = function getLayersArray (opt_array) {\n var array = opt_array ? opt_array : [];\n array.push(this);\n return array;\n };\n\n /**\n * @inheritDoc\n */\n Layer.prototype.getLayerStatesArray = function getLayerStatesArray (opt_states) {\n var states = opt_states ? opt_states : [];\n states.push(this.getLayerState());\n return states;\n };\n\n /**\n * Get the layer source.\n * @return {import(\"../source/Source.js\").default} The layer source (or `null` if not yet set).\n * @observable\n * @api\n */\n Layer.prototype.getSource = function getSource () {\n var source = this.get(LayerProperty.SOURCE);\n return (\n /** @type {import(\"../source/Source.js\").default} */ (source) || null\n );\n };\n\n /**\n * @inheritDoc\n */\n Layer.prototype.getSourceState = function getSourceState () {\n var source = this.getSource();\n return !source ? SourceState.UNDEFINED : source.getState();\n };\n\n /**\n * @private\n */\n Layer.prototype.handleSourceChange_ = function handleSourceChange_ () {\n this.changed();\n };\n\n /**\n * @private\n */\n Layer.prototype.handleSourcePropertyChange_ = function handleSourcePropertyChange_ () {\n if (this.sourceChangeKey_) {\n unlistenByKey(this.sourceChangeKey_);\n this.sourceChangeKey_ = null;\n }\n var source = this.getSource();\n if (source) {\n this.sourceChangeKey_ = listen(source,\n EventType.CHANGE, this.handleSourceChange_, this);\n }\n this.changed();\n };\n\n /**\n * Sets the layer to be rendered on top of other layers on a map. The map will\n * not manage this layer in its layers collection, and the callback in\n * {@link module:ol/Map#forEachLayerAtPixel} will receive `null` as layer. This\n * is useful for temporary layers. To remove an unmanaged layer from the map,\n * use `#setMap(null)`.\n *\n * To add the layer to a map and have it managed by the map, use\n * {@link module:ol/Map#addLayer} instead.\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @api\n */\n Layer.prototype.setMap = function setMap (map) {\n if (this.mapPrecomposeKey_) {\n unlistenByKey(this.mapPrecomposeKey_);\n this.mapPrecomposeKey_ = null;\n }\n if (!map) {\n this.changed();\n }\n if (this.mapRenderKey_) {\n unlistenByKey(this.mapRenderKey_);\n this.mapRenderKey_ = null;\n }\n if (map) {\n this.mapPrecomposeKey_ = listen(map, RenderEventType.PRECOMPOSE, function(evt) {\n var renderEvent = /** @type {import(\"../render/Event.js\").default} */ (evt);\n var layerState = this.getLayerState();\n layerState.managed = false;\n if (this.getZIndex() === undefined) {\n layerState.zIndex = Infinity;\n }\n renderEvent.frameState.layerStatesArray.push(layerState);\n renderEvent.frameState.layerStates[getUid(this)] = layerState;\n }, this);\n this.mapRenderKey_ = listen(this, EventType.CHANGE, map.render, map);\n this.changed();\n }\n };\n\n /**\n * Set the layer source.\n * @param {import(\"../source/Source.js\").default} source The layer source.\n * @observable\n * @api\n */\n Layer.prototype.setSource = function setSource (source) {\n this.set(LayerProperty.SOURCE, source);\n };\n\n return Layer;\n}(BaseLayer));\n\n\n/**\n * Return `true` if the layer is visible, and if the passed resolution is\n * between the layer's minResolution and maxResolution. The comparison is\n * inclusive for `minResolution` and exclusive for `maxResolution`.\n * @param {State} layerState Layer state.\n * @param {number} resolution Resolution.\n * @return {boolean} The layer is visible at the given resolution.\n */\nexport function visibleAtResolution(layerState, resolution) {\n return layerState.visible && resolution >= layerState.minResolution &&\n resolution < layerState.maxResolution;\n}\n\n\nexport default Layer;\n\n//# sourceMappingURL=Layer.js.map","/**\n * @module ol/control/Attribution\n */\nimport {equals} from '../array.js';\nimport Control from './Control.js';\nimport {CLASS_CONTROL, CLASS_UNSELECTABLE, CLASS_COLLAPSED} from '../css.js';\nimport {removeChildren, replaceNode} from '../dom.js';\nimport {listen} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {visibleAtResolution} from '../layer/Layer.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-attribution'] CSS class name.\n * @property {HTMLElement|string} [target] Specify a target if you\n * want the control to be rendered outside of the map's\n * viewport.\n * @property {boolean} [collapsible] Specify if attributions can\n * be collapsed. If not specified, sources control this behavior with their\n * `attributionsCollapsible` setting.\n * @property {boolean} [collapsed=true] Specify if attributions should\n * be collapsed at startup.\n * @property {string} [tipLabel='Attributions'] Text label to use for the button tip.\n * @property {string} [label='i'] Text label to use for the\n * collapsed attributions button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string|HTMLElement} [collapseLabel='»'] Text label to use\n * for the expanded attributions button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when\n * the control should be re-rendered. This is called in a `requestAnimationFrame`\n * callback.\n */\n\n\n/**\n * @classdesc\n * Control to show all the attributions associated with the layer sources\n * in the map. This control is one of the default controls included in maps.\n * By default it will show in the bottom right portion of the map, but this can\n * be changed by using a css selector for `.ol-attribution`.\n *\n * @api\n */\nvar Attribution = /*@__PURE__*/(function (Control) {\n function Attribution(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n Control.call(this, {\n element: document.createElement('div'),\n render: options.render || render,\n target: options.target\n });\n\n /**\n * @private\n * @type {HTMLElement}\n */\n this.ulElement_ = document.createElement('ul');\n\n /**\n * @private\n * @type {boolean}\n */\n this.collapsed_ = options.collapsed !== undefined ? options.collapsed : true;\n\n /**\n * @private\n * @type {boolean}\n */\n this.overrideCollapsible_ = options.collapsible !== undefined;\n\n /**\n * @private\n * @type {boolean}\n */\n this.collapsible_ = options.collapsible !== undefined ?\n options.collapsible : true;\n\n if (!this.collapsible_) {\n this.collapsed_ = false;\n }\n\n var className = options.className !== undefined ? options.className : 'ol-attribution';\n\n var tipLabel = options.tipLabel !== undefined ? options.tipLabel : 'Attributions';\n\n var collapseLabel = options.collapseLabel !== undefined ? options.collapseLabel : '\\u00BB';\n\n if (typeof collapseLabel === 'string') {\n /**\n * @private\n * @type {HTMLElement}\n */\n this.collapseLabel_ = document.createElement('span');\n this.collapseLabel_.textContent = collapseLabel;\n } else {\n this.collapseLabel_ = collapseLabel;\n }\n\n var label = options.label !== undefined ? options.label : 'i';\n\n if (typeof label === 'string') {\n /**\n * @private\n * @type {HTMLElement}\n */\n this.label_ = document.createElement('span');\n this.label_.textContent = label;\n } else {\n this.label_ = label;\n }\n\n\n var activeLabel = (this.collapsible_ && !this.collapsed_) ?\n this.collapseLabel_ : this.label_;\n var button = document.createElement('button');\n button.setAttribute('type', 'button');\n button.title = tipLabel;\n button.appendChild(activeLabel);\n\n listen(button, EventType.CLICK, this.handleClick_, this);\n\n var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL +\n (this.collapsed_ && this.collapsible_ ? ' ' + CLASS_COLLAPSED : '') +\n (this.collapsible_ ? '' : ' ol-uncollapsible');\n var element = this.element;\n element.className = cssClasses;\n element.appendChild(this.ulElement_);\n element.appendChild(button);\n\n /**\n * A list of currently rendered resolutions.\n * @type {Array<string>}\n * @private\n */\n this.renderedAttributions_ = [];\n\n /**\n * @private\n * @type {boolean}\n */\n this.renderedVisible_ = true;\n\n }\n\n if ( Control ) Attribution.__proto__ = Control;\n Attribution.prototype = Object.create( Control && Control.prototype );\n Attribution.prototype.constructor = Attribution;\n\n /**\n * Collect a list of visible attributions and set the collapsible state.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @return {Array<string>} Attributions.\n * @private\n */\n Attribution.prototype.collectSourceAttributions_ = function collectSourceAttributions_ (frameState) {\n /**\n * Used to determine if an attribution already exists.\n * @type {!Object<string, boolean>}\n */\n var lookup = {};\n\n /**\n * A list of visible attributions.\n * @type {Array<string>}\n */\n var visibleAttributions = [];\n\n var layerStatesArray = frameState.layerStatesArray;\n var resolution = frameState.viewState.resolution;\n for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n var layerState = layerStatesArray[i];\n if (!visibleAtResolution(layerState, resolution)) {\n continue;\n }\n\n var source = /** @type {import(\"../layer/Layer.js\").default} */ (layerState.layer).getSource();\n if (!source) {\n continue;\n }\n\n var attributionGetter = source.getAttributions();\n if (!attributionGetter) {\n continue;\n }\n\n var attributions = attributionGetter(frameState);\n if (!attributions) {\n continue;\n }\n\n if (!this.overrideCollapsible_ && source.getAttributionsCollapsible() === false) {\n this.setCollapsible(false);\n }\n\n if (Array.isArray(attributions)) {\n for (var j = 0, jj = attributions.length; j < jj; ++j) {\n if (!(attributions[j] in lookup)) {\n visibleAttributions.push(attributions[j]);\n lookup[attributions[j]] = true;\n }\n }\n } else {\n if (!(attributions in lookup)) {\n visibleAttributions.push(attributions);\n lookup[attributions] = true;\n }\n }\n }\n return visibleAttributions;\n };\n\n /**\n * @private\n * @param {?import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\n Attribution.prototype.updateElement_ = function updateElement_ (frameState) {\n if (!frameState) {\n if (this.renderedVisible_) {\n this.element.style.display = 'none';\n this.renderedVisible_ = false;\n }\n return;\n }\n\n var attributions = this.collectSourceAttributions_(frameState);\n\n var visible = attributions.length > 0;\n if (this.renderedVisible_ != visible) {\n this.element.style.display = visible ? '' : 'none';\n this.renderedVisible_ = visible;\n }\n\n if (equals(attributions, this.renderedAttributions_)) {\n return;\n }\n\n removeChildren(this.ulElement_);\n\n // append the attributions\n for (var i = 0, ii = attributions.length; i < ii; ++i) {\n var element = document.createElement('li');\n element.innerHTML = attributions[i];\n this.ulElement_.appendChild(element);\n }\n\n this.renderedAttributions_ = attributions;\n };\n\n /**\n * @param {MouseEvent} event The event to handle\n * @private\n */\n Attribution.prototype.handleClick_ = function handleClick_ (event) {\n event.preventDefault();\n this.handleToggle_();\n };\n\n /**\n * @private\n */\n Attribution.prototype.handleToggle_ = function handleToggle_ () {\n this.element.classList.toggle(CLASS_COLLAPSED);\n if (this.collapsed_) {\n replaceNode(this.collapseLabel_, this.label_);\n } else {\n replaceNode(this.label_, this.collapseLabel_);\n }\n this.collapsed_ = !this.collapsed_;\n };\n\n /**\n * Return `true` if the attribution is collapsible, `false` otherwise.\n * @return {boolean} True if the widget is collapsible.\n * @api\n */\n Attribution.prototype.getCollapsible = function getCollapsible () {\n return this.collapsible_;\n };\n\n /**\n * Set whether the attribution should be collapsible.\n * @param {boolean} collapsible True if the widget is collapsible.\n * @api\n */\n Attribution.prototype.setCollapsible = function setCollapsible (collapsible) {\n if (this.collapsible_ === collapsible) {\n return;\n }\n this.collapsible_ = collapsible;\n this.element.classList.toggle('ol-uncollapsible');\n if (!collapsible && this.collapsed_) {\n this.handleToggle_();\n }\n };\n\n /**\n * Collapse or expand the attribution according to the passed parameter. Will\n * not do anything if the attribution isn't collapsible or if the current\n * collapsed state is already the one requested.\n * @param {boolean} collapsed True if the widget is collapsed.\n * @api\n */\n Attribution.prototype.setCollapsed = function setCollapsed (collapsed) {\n if (!this.collapsible_ || this.collapsed_ === collapsed) {\n return;\n }\n this.handleToggle_();\n };\n\n /**\n * Return `true` when the attribution is currently collapsed or `false`\n * otherwise.\n * @return {boolean} True if the widget is collapsed.\n * @api\n */\n Attribution.prototype.getCollapsed = function getCollapsed () {\n return this.collapsed_;\n };\n\n return Attribution;\n}(Control));\n\n\n/**\n * Update the attribution element.\n * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n * @this {Attribution}\n * @api\n */\nexport function render(mapEvent) {\n this.updateElement_(mapEvent.frameState);\n}\n\n\nexport default Attribution;\n\n//# sourceMappingURL=Attribution.js.map","/**\n * @module ol/control/Rotate\n */\nimport Control from './Control.js';\nimport {CLASS_CONTROL, CLASS_HIDDEN, CLASS_UNSELECTABLE} from '../css.js';\nimport {easeOut} from '../easing.js';\nimport {listen} from '../events.js';\nimport EventType from '../events/EventType.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-rotate'] CSS class name.\n * @property {string|HTMLElement} [label='⇧'] Text label to use for the rotate button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string} [tipLabel='Reset rotation'] Text label to use for the rotate tip.\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {boolean} [autoHide=true] Hide the control when rotation is 0.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when the control should\n * be re-rendered. This is called in a `requestAnimationFrame` callback.\n * @property {function()} [resetNorth] Function called when the control is clicked.\n * This will override the default `resetNorth`.\n * @property {HTMLElement|string} [target] Specify a target if you want the control to be\n * rendered outside of the map's viewport.\n */\n\n\n/**\n * @classdesc\n * A button control to reset rotation to 0.\n * To style this control use css selector `.ol-rotate`. A `.ol-hidden` css\n * selector is added to the button when the rotation is 0.\n *\n * @api\n */\nvar Rotate = /*@__PURE__*/(function (Control) {\n function Rotate(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n Control.call(this, {\n element: document.createElement('div'),\n render: options.render || render,\n target: options.target\n });\n\n var className = options.className !== undefined ? options.className : 'ol-rotate';\n\n var label = options.label !== undefined ? options.label : '\\u21E7';\n\n /**\n * @type {HTMLElement}\n * @private\n */\n this.label_ = null;\n\n if (typeof label === 'string') {\n this.label_ = document.createElement('span');\n this.label_.className = 'ol-compass';\n this.label_.textContent = label;\n } else {\n this.label_ = label;\n this.label_.classList.add('ol-compass');\n }\n\n var tipLabel = options.tipLabel ? options.tipLabel : 'Reset rotation';\n\n var button = document.createElement('button');\n button.className = className + '-reset';\n button.setAttribute('type', 'button');\n button.title = tipLabel;\n button.appendChild(this.label_);\n\n listen(button, EventType.CLICK, this.handleClick_, this);\n\n var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;\n var element = this.element;\n element.className = cssClasses;\n element.appendChild(button);\n\n this.callResetNorth_ = options.resetNorth ? options.resetNorth : undefined;\n\n /**\n * @type {number}\n * @private\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n /**\n * @type {boolean}\n * @private\n */\n this.autoHide_ = options.autoHide !== undefined ? options.autoHide : true;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.rotation_ = undefined;\n\n if (this.autoHide_) {\n this.element.classList.add(CLASS_HIDDEN);\n }\n\n }\n\n if ( Control ) Rotate.__proto__ = Control;\n Rotate.prototype = Object.create( Control && Control.prototype );\n Rotate.prototype.constructor = Rotate;\n\n /**\n * @param {MouseEvent} event The event to handle\n * @private\n */\n Rotate.prototype.handleClick_ = function handleClick_ (event) {\n event.preventDefault();\n if (this.callResetNorth_ !== undefined) {\n this.callResetNorth_();\n } else {\n this.resetNorth_();\n }\n };\n\n /**\n * @private\n */\n Rotate.prototype.resetNorth_ = function resetNorth_ () {\n var map = this.getMap();\n var view = map.getView();\n if (!view) {\n // the map does not have a view, so we can't act\n // upon it\n return;\n }\n if (view.getRotation() !== undefined) {\n if (this.duration_ > 0) {\n view.animate({\n rotation: 0,\n duration: this.duration_,\n easing: easeOut\n });\n } else {\n view.setRotation(0);\n }\n }\n };\n\n return Rotate;\n}(Control));\n\n\n/**\n * Update the rotate control element.\n * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n * @this {Rotate}\n * @api\n */\nexport function render(mapEvent) {\n var frameState = mapEvent.frameState;\n if (!frameState) {\n return;\n }\n var rotation = frameState.viewState.rotation;\n if (rotation != this.rotation_) {\n var transform = 'rotate(' + rotation + 'rad)';\n if (this.autoHide_) {\n var contains = this.element.classList.contains(CLASS_HIDDEN);\n if (!contains && rotation === 0) {\n this.element.classList.add(CLASS_HIDDEN);\n } else if (contains && rotation !== 0) {\n this.element.classList.remove(CLASS_HIDDEN);\n }\n }\n this.label_.style.msTransform = transform;\n this.label_.style.webkitTransform = transform;\n this.label_.style.transform = transform;\n }\n this.rotation_ = rotation;\n}\n\nexport default Rotate;\n\n//# sourceMappingURL=Rotate.js.map","/**\n * @module ol/control/Zoom\n */\nimport {listen} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport Control from './Control.js';\nimport {CLASS_CONTROL, CLASS_UNSELECTABLE} from '../css.js';\nimport {easeOut} from '../easing.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {string} [className='ol-zoom'] CSS class name.\n * @property {string|HTMLElement} [zoomInLabel='+'] Text label to use for the zoom-in\n * button. Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string|HTMLElement} [zoomOutLabel='-'] Text label to use for the zoom-out button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string} [zoomInTipLabel='Zoom in'] Text label to use for the button tip.\n * @property {string} [zoomOutTipLabel='Zoom out'] Text label to use for the button tip.\n * @property {number} [delta=1] The zoom delta applied on each click.\n * @property {HTMLElement|string} [target] Specify a target if you want the control to be\n * rendered outside of the map's viewport.\n */\n\n\n/**\n * @classdesc\n * A control with 2 buttons, one for zoom in and one for zoom out.\n * This control is one of the default controls of a map. To style this control\n * use css selectors `.ol-zoom-in` and `.ol-zoom-out`.\n *\n * @api\n */\nvar Zoom = /*@__PURE__*/(function (Control) {\n function Zoom(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n Control.call(this, {\n element: document.createElement('div'),\n target: options.target\n });\n\n var className = options.className !== undefined ? options.className : 'ol-zoom';\n\n var delta = options.delta !== undefined ? options.delta : 1;\n\n var zoomInLabel = options.zoomInLabel !== undefined ? options.zoomInLabel : '+';\n var zoomOutLabel = options.zoomOutLabel !== undefined ? options.zoomOutLabel : '\\u2212';\n\n var zoomInTipLabel = options.zoomInTipLabel !== undefined ?\n options.zoomInTipLabel : 'Zoom in';\n var zoomOutTipLabel = options.zoomOutTipLabel !== undefined ?\n options.zoomOutTipLabel : 'Zoom out';\n\n var inElement = document.createElement('button');\n inElement.className = className + '-in';\n inElement.setAttribute('type', 'button');\n inElement.title = zoomInTipLabel;\n inElement.appendChild(\n typeof zoomInLabel === 'string' ? document.createTextNode(zoomInLabel) : zoomInLabel\n );\n\n listen(inElement, EventType.CLICK, this.handleClick_.bind(this, delta));\n\n var outElement = document.createElement('button');\n outElement.className = className + '-out';\n outElement.setAttribute('type', 'button');\n outElement.title = zoomOutTipLabel;\n outElement.appendChild(\n typeof zoomOutLabel === 'string' ? document.createTextNode(zoomOutLabel) : zoomOutLabel\n );\n\n listen(outElement, EventType.CLICK, this.handleClick_.bind(this, -delta));\n\n var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;\n var element = this.element;\n element.className = cssClasses;\n element.appendChild(inElement);\n element.appendChild(outElement);\n\n /**\n * @type {number}\n * @private\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n }\n\n if ( Control ) Zoom.__proto__ = Control;\n Zoom.prototype = Object.create( Control && Control.prototype );\n Zoom.prototype.constructor = Zoom;\n\n /**\n * @param {number} delta Zoom delta.\n * @param {MouseEvent} event The event to handle\n * @private\n */\n Zoom.prototype.handleClick_ = function handleClick_ (delta, event) {\n event.preventDefault();\n this.zoomByDelta_(delta);\n };\n\n /**\n * @param {number} delta Zoom delta.\n * @private\n */\n Zoom.prototype.zoomByDelta_ = function zoomByDelta_ (delta) {\n var map = this.getMap();\n var view = map.getView();\n if (!view) {\n // the map does not have a view, so we can't act\n // upon it\n return;\n }\n var currentResolution = view.getResolution();\n if (currentResolution) {\n var newResolution = view.constrainResolution(currentResolution, delta);\n if (this.duration_ > 0) {\n if (view.getAnimating()) {\n view.cancelAnimations();\n }\n view.animate({\n resolution: newResolution,\n duration: this.duration_,\n easing: easeOut\n });\n } else {\n view.setResolution(newResolution);\n }\n }\n };\n\n return Zoom;\n}(Control));\n\n\nexport default Zoom;\n\n//# sourceMappingURL=Zoom.js.map","/**\n * @module ol/control/util\n */\nimport Collection from '../Collection.js';\nimport Attribution from './Attribution.js';\nimport Rotate from './Rotate.js';\nimport Zoom from './Zoom.js';\n\n\n/**\n * @typedef {Object} DefaultsOptions\n * @property {boolean} [attribution=true] Include\n * {@link module:ol/control/Attribution~Attribution}.\n * @property {import(\"./Attribution.js\").Options} [attributionOptions]\n * Options for {@link module:ol/control/Attribution~Attribution}.\n * @property {boolean} [rotate=true] Include\n * {@link module:ol/control/Rotate~Rotate}.\n * @property {import(\"./Rotate.js\").Options} [rotateOptions] Options\n * for {@link module:ol/control/Rotate~Rotate}.\n * @property {boolean} [zoom] Include {@link module:ol/control/Zoom~Zoom}.\n * @property {import(\"./Zoom.js\").Options} [zoomOptions] Options for\n * {@link module:ol/control/Zoom~Zoom}.\n * @api\n */\n\n\n/**\n * Set of controls included in maps by default. Unless configured otherwise,\n * this returns a collection containing an instance of each of the following\n * controls:\n * * {@link module:ol/control/Zoom~Zoom}\n * * {@link module:ol/control/Rotate~Rotate}\n * * {@link module:ol/control/Attribution~Attribution}\n *\n * @param {DefaultsOptions=} opt_options\n * Defaults options.\n * @return {Collection<import(\"./Control.js\").default>}\n * Controls.\n * @function module:ol/control.defaults\n * @api\n */\nexport function defaults(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n var controls = new Collection();\n\n var zoomControl = options.zoom !== undefined ? options.zoom : true;\n if (zoomControl) {\n controls.push(new Zoom(options.zoomOptions));\n }\n\n var rotateControl = options.rotate !== undefined ? options.rotate : true;\n if (rotateControl) {\n controls.push(new Rotate(options.rotateOptions));\n }\n\n var attributionControl = options.attribution !== undefined ?\n options.attribution : true;\n if (attributionControl) {\n controls.push(new Attribution(options.attributionOptions));\n }\n\n return controls;\n}\n\n//# sourceMappingURL=util.js.map","/**\n * @module ol/Kinetic\n */\n\n/**\n * @classdesc\n * Implementation of inertial deceleration for map movement.\n *\n * @api\n */\nvar Kinetic = function Kinetic(decay, minVelocity, delay) {\n\n /**\n * @private\n * @type {number}\n */\n this.decay_ = decay;\n\n /**\n * @private\n * @type {number}\n */\n this.minVelocity_ = minVelocity;\n\n /**\n * @private\n * @type {number}\n */\n this.delay_ = delay;\n\n /**\n * @private\n * @type {Array<number>}\n */\n this.points_ = [];\n\n /**\n * @private\n * @type {number}\n */\n this.angle_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.initialVelocity_ = 0;\n};\n\n/**\n * FIXME empty description for jsdoc\n */\nKinetic.prototype.begin = function begin () {\n this.points_.length = 0;\n this.angle_ = 0;\n this.initialVelocity_ = 0;\n};\n\n/**\n * @param {number} x X.\n * @param {number} y Y.\n */\nKinetic.prototype.update = function update (x, y) {\n this.points_.push(x, y, Date.now());\n};\n\n/**\n * @return {boolean} Whether we should do kinetic animation.\n */\nKinetic.prototype.end = function end () {\n if (this.points_.length < 6) {\n // at least 2 points are required (i.e. there must be at least 6 elements\n // in the array)\n return false;\n }\n var delay = Date.now() - this.delay_;\n var lastIndex = this.points_.length - 3;\n if (this.points_[lastIndex + 2] < delay) {\n // the last tracked point is too old, which means that the user stopped\n // panning before releasing the map\n return false;\n }\n\n // get the first point which still falls into the delay time\n var firstIndex = lastIndex - 3;\n while (firstIndex > 0 && this.points_[firstIndex + 2] > delay) {\n firstIndex -= 3;\n }\n\n var duration = this.points_[lastIndex + 2] - this.points_[firstIndex + 2];\n // we don't want a duration of 0 (divide by zero)\n // we also make sure the user panned for a duration of at least one frame\n // (1/60s) to compute sane displacement values\n if (duration < 1000 / 60) {\n return false;\n }\n\n var dx = this.points_[lastIndex] - this.points_[firstIndex];\n var dy = this.points_[lastIndex + 1] - this.points_[firstIndex + 1];\n this.angle_ = Math.atan2(dy, dx);\n this.initialVelocity_ = Math.sqrt(dx * dx + dy * dy) / duration;\n return this.initialVelocity_ > this.minVelocity_;\n};\n\n/**\n * @return {number} Total distance travelled (pixels).\n */\nKinetic.prototype.getDistance = function getDistance () {\n return (this.minVelocity_ - this.initialVelocity_) / this.decay_;\n};\n\n/**\n * @return {number} Angle of the kinetic panning animation (radians).\n */\nKinetic.prototype.getAngle = function getAngle () {\n return this.angle_;\n};\n\nexport default Kinetic;\n\n//# sourceMappingURL=Kinetic.js.map","/**\n * @module ol/interaction/Property\n */\n\n/**\n * @enum {string}\n */\nexport default {\n ACTIVE: 'active'\n};\n\n//# sourceMappingURL=Property.js.map","/**\n * @module ol/interaction/Interaction\n */\nimport BaseObject from '../Object.js';\nimport {easeOut, linear} from '../easing.js';\nimport InteractionProperty from './Property.js';\nimport {clamp} from '../math.js';\n\n\n/**\n * Object literal with config options for interactions.\n * @typedef {Object} InteractionOptions\n * @property {function(import(\"../MapBrowserEvent.js\").default):boolean} handleEvent\n * Method called by the map to notify the interaction that a browser event was\n * dispatched to the map. If the function returns a falsy value, propagation of\n * the event to other interactions in the map's interactions chain will be\n * prevented (this includes functions with no explicit return).\n */\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * User actions that change the state of the map. Some are similar to controls,\n * but are not associated with a DOM element.\n * For example, {@link module:ol/interaction/KeyboardZoom~KeyboardZoom} is\n * functionally the same as {@link module:ol/control/Zoom~Zoom}, but triggered\n * by a keyboard event not a button element event.\n * Although interactions do not have a DOM element, some of them do render\n * vectors and so are visible on the screen.\n * @api\n */\nvar Interaction = /*@__PURE__*/(function (BaseObject) {\n function Interaction(options) {\n BaseObject.call(this);\n\n if (options.handleEvent) {\n this.handleEvent = options.handleEvent;\n }\n\n /**\n * @private\n * @type {import(\"../PluggableMap.js\").default}\n */\n this.map_ = null;\n\n this.setActive(true);\n }\n\n if ( BaseObject ) Interaction.__proto__ = BaseObject;\n Interaction.prototype = Object.create( BaseObject && BaseObject.prototype );\n Interaction.prototype.constructor = Interaction;\n\n /**\n * Return whether the interaction is currently active.\n * @return {boolean} `true` if the interaction is active, `false` otherwise.\n * @observable\n * @api\n */\n Interaction.prototype.getActive = function getActive () {\n return /** @type {boolean} */ (this.get(InteractionProperty.ACTIVE));\n };\n\n /**\n * Get the map associated with this interaction.\n * @return {import(\"../PluggableMap.js\").default} Map.\n * @api\n */\n Interaction.prototype.getMap = function getMap () {\n return this.map_;\n };\n\n /**\n * Handles the {@link module:ol/MapBrowserEvent map browser event}.\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @api\n */\n Interaction.prototype.handleEvent = function handleEvent (mapBrowserEvent) {\n return true;\n };\n\n /**\n * Activate or deactivate the interaction.\n * @param {boolean} active Active.\n * @observable\n * @api\n */\n Interaction.prototype.setActive = function setActive (active) {\n this.set(InteractionProperty.ACTIVE, active);\n };\n\n /**\n * Remove the interaction from its current map and attach it to the new map.\n * Subclasses may set up event handlers to get notified about changes to\n * the map here.\n * @param {import(\"../PluggableMap.js\").default} map Map.\n */\n Interaction.prototype.setMap = function setMap (map) {\n this.map_ = map;\n };\n\n return Interaction;\n}(BaseObject));\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {import(\"../coordinate.js\").Coordinate} delta Delta.\n * @param {number=} opt_duration Duration.\n */\nexport function pan(view, delta, opt_duration) {\n var currentCenter = view.getCenter();\n if (currentCenter) {\n var center = view.constrainCenter(\n [currentCenter[0] + delta[0], currentCenter[1] + delta[1]]);\n if (opt_duration) {\n view.animate({\n duration: opt_duration,\n easing: linear,\n center: center\n });\n } else {\n view.setCenter(center);\n }\n }\n}\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number|undefined} rotation Rotation.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate.\n * @param {number=} opt_duration Duration.\n */\nexport function rotate(view, rotation, opt_anchor, opt_duration) {\n rotation = view.constrainRotation(rotation, 0);\n rotateWithoutConstraints(view, rotation, opt_anchor, opt_duration);\n}\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number|undefined} rotation Rotation.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate.\n * @param {number=} opt_duration Duration.\n */\nexport function rotateWithoutConstraints(view, rotation, opt_anchor, opt_duration) {\n if (rotation !== undefined) {\n var currentRotation = view.getRotation();\n var currentCenter = view.getCenter();\n if (currentRotation !== undefined && currentCenter && opt_duration > 0) {\n view.animate({\n rotation: rotation,\n anchor: opt_anchor,\n duration: opt_duration,\n easing: easeOut\n });\n } else {\n view.rotate(rotation, opt_anchor);\n }\n }\n}\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number|undefined} resolution Resolution to go to.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate.\n * @param {number=} opt_duration Duration.\n * @param {number=} opt_direction Zooming direction; > 0 indicates\n * zooming out, in which case the constraints system will select\n * the largest nearest resolution; < 0 indicates zooming in, in\n * which case the constraints system will select the smallest\n * nearest resolution; == 0 indicates that the zooming direction\n * is unknown/not relevant, in which case the constraints system\n * will select the nearest resolution. If not defined 0 is\n * assumed.\n */\nexport function zoom(view, resolution, opt_anchor, opt_duration, opt_direction) {\n resolution = view.constrainResolution(resolution, 0, opt_direction);\n zoomWithoutConstraints(view, resolution, opt_anchor, opt_duration);\n}\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number} delta Delta from previous zoom level.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate.\n * @param {number=} opt_duration Duration.\n */\nexport function zoomByDelta(view, delta, opt_anchor, opt_duration) {\n var currentResolution = view.getResolution();\n var resolution = view.constrainResolution(currentResolution, delta, 0);\n\n if (resolution !== undefined) {\n var resolutions = view.getResolutions();\n resolution = clamp(\n resolution,\n view.getMinResolution() || resolutions[resolutions.length - 1],\n view.getMaxResolution() || resolutions[0]);\n }\n\n // If we have a constraint on center, we need to change the anchor so that the\n // new center is within the extent. We first calculate the new center, apply\n // the constraint to it, and then calculate back the anchor\n if (opt_anchor && resolution !== undefined && resolution !== currentResolution) {\n var currentCenter = view.getCenter();\n var center = view.calculateCenterZoom(resolution, opt_anchor);\n center = view.constrainCenter(center);\n\n opt_anchor = [\n (resolution * currentCenter[0] - currentResolution * center[0]) /\n (resolution - currentResolution),\n (resolution * currentCenter[1] - currentResolution * center[1]) /\n (resolution - currentResolution)\n ];\n }\n\n zoomWithoutConstraints(view, resolution, opt_anchor, opt_duration);\n}\n\n\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number|undefined} resolution Resolution to go to.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate.\n * @param {number=} opt_duration Duration.\n */\nexport function zoomWithoutConstraints(view, resolution, opt_anchor, opt_duration) {\n if (resolution) {\n var currentResolution = view.getResolution();\n var currentCenter = view.getCenter();\n if (currentResolution !== undefined && currentCenter &&\n resolution !== currentResolution && opt_duration) {\n view.animate({\n resolution: resolution,\n anchor: opt_anchor,\n duration: opt_duration,\n easing: easeOut\n });\n } else {\n if (opt_anchor) {\n var center = view.calculateCenterZoom(resolution, opt_anchor);\n view.setCenter(center);\n }\n view.setResolution(resolution);\n }\n }\n}\n\nexport default Interaction;\n\n//# sourceMappingURL=Interaction.js.map","/**\n * @module ol/interaction/DoubleClickZoom\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport Interaction, {zoomByDelta} from './Interaction.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {number} [delta=1] The zoom delta applied on each double click.\n */\n\n\n/**\n * @classdesc\n * Allows the user to zoom by double-clicking on the map.\n * @api\n */\nvar DoubleClickZoom = /*@__PURE__*/(function (Interaction) {\n function DoubleClickZoom(opt_options) {\n Interaction.call(this, {\n handleEvent: handleEvent\n });\n\n var options = opt_options ? opt_options : {};\n\n /**\n * @private\n * @type {number}\n */\n this.delta_ = options.delta ? options.delta : 1;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n }\n\n if ( Interaction ) DoubleClickZoom.__proto__ = Interaction;\n DoubleClickZoom.prototype = Object.create( Interaction && Interaction.prototype );\n DoubleClickZoom.prototype.constructor = DoubleClickZoom;\n\n return DoubleClickZoom;\n}(Interaction));\n\n\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} (if it was a\n * doubleclick) and eventually zooms the map.\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {DoubleClickZoom}\n */\nfunction handleEvent(mapBrowserEvent) {\n var stopEvent = false;\n if (mapBrowserEvent.type == MapBrowserEventType.DBLCLICK) {\n var browserEvent = /** @type {MouseEvent} */ (mapBrowserEvent.originalEvent);\n var map = mapBrowserEvent.map;\n var anchor = mapBrowserEvent.coordinate;\n var delta = browserEvent.shiftKey ? -this.delta_ : this.delta_;\n var view = map.getView();\n zoomByDelta(view, delta, anchor, this.duration_);\n mapBrowserEvent.preventDefault();\n stopEvent = true;\n }\n return !stopEvent;\n}\n\nexport default DoubleClickZoom;\n\n//# sourceMappingURL=DoubleClickZoom.js.map","/**\n * @module ol/events/condition\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport {assert} from '../asserts.js';\nimport {TRUE, FALSE} from '../functions.js';\nimport {WEBKIT, MAC} from '../has.js';\n\n\n/**\n * A function that takes an {@link module:ol/MapBrowserEvent} and returns a\n * `{boolean}`. If the condition is met, true should be returned.\n *\n * @typedef {function(this: ?, import(\"../MapBrowserEvent.js\").default): boolean} Condition\n */\n\n\n/**\n * Return `true` if only the alt-key is pressed, `false` otherwise (e.g. when\n * additionally the shift-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the alt key is pressed.\n * @api\n */\nexport var altKeyOnly = function(mapBrowserEvent) {\n var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n return (\n originalEvent.altKey &&\n !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n !originalEvent.shiftKey);\n};\n\n\n/**\n * Return `true` if only the alt-key and shift-key is pressed, `false` otherwise\n * (e.g. when additionally the platform-modifier-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the alt and shift keys are pressed.\n * @api\n */\nexport var altShiftKeysOnly = function(mapBrowserEvent) {\n var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n return (\n originalEvent.altKey &&\n !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n originalEvent.shiftKey);\n};\n\n\n/**\n * Return `true` if the map has the focus. This condition requires a map target\n * element with a `tabindex` attribute, e.g. `<div id=\"map\" tabindex=\"1\">`.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} event Map browser event.\n * @return {boolean} The map has the focus.\n * @api\n */\nexport var focus = function(event) {\n return event.target.getTargetElement() === document.activeElement;\n};\n\n\n/**\n * Return always true.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True.\n * @api\n */\nexport var always = TRUE;\n\n\n/**\n * Return `true` if the event is a `click` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `click` event.\n * @api\n */\nexport var click = function(mapBrowserEvent) {\n return mapBrowserEvent.type == MapBrowserEventType.CLICK;\n};\n\n\n/**\n * Return `true` if the event has an \"action\"-producing mouse button.\n *\n * By definition, this includes left-click on windows/linux, and left-click\n * without the ctrl key on Macs.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} The result.\n */\nexport var mouseActionButton = function(mapBrowserEvent) {\n var originalEvent = /** @type {MouseEvent} */ (mapBrowserEvent.originalEvent);\n return originalEvent.button == 0 &&\n !(WEBKIT && MAC && originalEvent.ctrlKey);\n};\n\n\n/**\n * Return always false.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} False.\n * @api\n */\nexport var never = FALSE;\n\n\n/**\n * Return `true` if the browser event is a `pointermove` event, `false`\n * otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the browser event is a `pointermove` event.\n * @api\n */\nexport var pointerMove = function(mapBrowserEvent) {\n return mapBrowserEvent.type == 'pointermove';\n};\n\n\n/**\n * Return `true` if the event is a map `singleclick` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `singleclick` event.\n * @api\n */\nexport var singleClick = function(mapBrowserEvent) {\n return mapBrowserEvent.type == MapBrowserEventType.SINGLECLICK;\n};\n\n\n/**\n * Return `true` if the event is a map `dblclick` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `dblclick` event.\n * @api\n */\nexport var doubleClick = function(mapBrowserEvent) {\n return mapBrowserEvent.type == MapBrowserEventType.DBLCLICK;\n};\n\n\n/**\n * Return `true` if no modifier key (alt-, shift- or platform-modifier-key) is\n * pressed.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True only if there no modifier keys are pressed.\n * @api\n */\nexport var noModifierKeys = function(mapBrowserEvent) {\n var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n return (\n !originalEvent.altKey &&\n !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n !originalEvent.shiftKey);\n};\n\n\n/**\n * Return `true` if only the platform-modifier-key (the meta-key on Mac,\n * ctrl-key otherwise) is pressed, `false` otherwise (e.g. when additionally\n * the shift-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the platform modifier key is pressed.\n * @api\n */\nexport var platformModifierKeyOnly = function(mapBrowserEvent) {\n var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n return !originalEvent.altKey &&\n (MAC ? originalEvent.metaKey : originalEvent.ctrlKey) &&\n !originalEvent.shiftKey;\n};\n\n\n/**\n * Return `true` if only the shift-key is pressed, `false` otherwise (e.g. when\n * additionally the alt-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the shift key is pressed.\n * @api\n */\nexport var shiftKeyOnly = function(mapBrowserEvent) {\n var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n return (\n !originalEvent.altKey &&\n !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n originalEvent.shiftKey);\n};\n\n\n/**\n * Return `true` if the target element is not editable, i.e. not a `<input>`-,\n * `<select>`- or `<textarea>`-element, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True only if the target element is not editable.\n * @api\n */\nexport var targetNotEditable = function(mapBrowserEvent) {\n var target = mapBrowserEvent.originalEvent.target;\n var tagName = /** @type {Element} */ (target).tagName;\n return (\n tagName !== 'INPUT' &&\n tagName !== 'SELECT' &&\n tagName !== 'TEXTAREA');\n};\n\n\n/**\n * Return `true` if the event originates from a mouse device.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a mouse device.\n * @api\n */\nexport var mouseOnly = function(mapBrowserEvent) {\n var pointerEvent = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n assert(pointerEvent !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType\n return pointerEvent.pointerType == 'mouse';\n};\n\n\n/**\n * Return `true` if the event originates from a primary pointer in\n * contact with the surface or if the left mouse button is pressed.\n * See http://www.w3.org/TR/pointerevents/#button-states.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a primary pointer.\n * @api\n */\nexport var primaryAction = function(mapBrowserEvent) {\n var pointerEvent = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n assert(pointerEvent !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n return pointerEvent.isPrimary && pointerEvent.button === 0;\n};\n\n//# sourceMappingURL=condition.js.map","/**\n * @module ol/interaction/Pointer\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport Interaction from './Interaction.js';\nimport {getValues} from '../obj.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default):boolean} [handleDownEvent]\n * Function handling \"down\" events. If the function returns `true` then a drag\n * sequence is started.\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default)} [handleDragEvent]\n * Function handling \"drag\" events. This function is called on \"move\" events\n * during a drag sequence.\n * @property {function(import(\"../MapBrowserEvent.js\").default):boolean} [handleEvent]\n * Method called by the map to notify the interaction that a browser event was\n * dispatched to the map. The function may return `false` to prevent the\n * propagation of the event to other interactions in the map's interactions\n * chain.\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default)} [handleMoveEvent]\n * Function handling \"move\" events. This function is called on \"move\" events,\n * also during a drag sequence (so during a drag sequence both the\n * `handleDragEvent` function and this function are called).\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default):boolean} [handleUpEvent]\n * Function handling \"up\" events. If the function returns `false` then the\n * current drag sequence is stopped.\n * @property {function(boolean):boolean} [stopDown]\n * Should the down event be propagated to other interactions, or should be\n * stopped?\n */\n\n\n/**\n * @classdesc\n * Base class that calls user-defined functions on `down`, `move` and `up`\n * events. This class also manages \"drag sequences\".\n *\n * When the `handleDownEvent` user function returns `true` a drag sequence is\n * started. During a drag sequence the `handleDragEvent` user function is\n * called on `move` events. The drag sequence ends when the `handleUpEvent`\n * user function is called and returns `false`.\n * @api\n */\nvar PointerInteraction = /*@__PURE__*/(function (Interaction) {\n function PointerInteraction(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n Interaction.call(/** @type {import(\"./Interaction.js\").InteractionOptions} */ this, (options));\n\n if (options.handleDownEvent) {\n this.handleDownEvent = options.handleDownEvent;\n }\n\n if (options.handleDragEvent) {\n this.handleDragEvent = options.handleDragEvent;\n }\n\n if (options.handleMoveEvent) {\n this.handleMoveEvent = options.handleMoveEvent;\n }\n\n if (options.handleUpEvent) {\n this.handleUpEvent = options.handleUpEvent;\n }\n\n if (options.stopDown) {\n this.stopDown = options.stopDown;\n }\n\n /**\n * @type {boolean}\n * @protected\n */\n this.handlingDownUpSequence = false;\n\n /**\n * @type {!Object<string, import(\"../pointer/PointerEvent.js\").default>}\n * @private\n */\n this.trackedPointers_ = {};\n\n /**\n * @type {Array<import(\"../pointer/PointerEvent.js\").default>}\n * @protected\n */\n this.targetPointers = [];\n\n }\n\n if ( Interaction ) PointerInteraction.__proto__ = Interaction;\n PointerInteraction.prototype = Object.create( Interaction && Interaction.prototype );\n PointerInteraction.prototype.constructor = PointerInteraction;\n\n /**\n * Handle pointer down events.\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @return {boolean} If the event was consumed.\n * @protected\n */\n PointerInteraction.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n return false;\n };\n\n /**\n * Handle pointer drag events.\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @protected\n */\n PointerInteraction.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {};\n\n /**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} and may call into\n * other functions, if event sequences like e.g. 'drag' or 'down-up' etc. are\n * detected.\n * @override\n * @api\n */\n PointerInteraction.prototype.handleEvent = function handleEvent (mapBrowserEvent) {\n if (!(/** @type {import(\"../MapBrowserPointerEvent.js\").default} */ (mapBrowserEvent).pointerEvent)) {\n return true;\n }\n\n var stopEvent = false;\n this.updateTrackedPointers_(mapBrowserEvent);\n if (this.handlingDownUpSequence) {\n if (mapBrowserEvent.type == MapBrowserEventType.POINTERDRAG) {\n this.handleDragEvent(mapBrowserEvent);\n } else if (mapBrowserEvent.type == MapBrowserEventType.POINTERUP) {\n var handledUp = this.handleUpEvent(mapBrowserEvent);\n this.handlingDownUpSequence = handledUp && this.targetPointers.length > 0;\n }\n } else {\n if (mapBrowserEvent.type == MapBrowserEventType.POINTERDOWN) {\n var handled = this.handleDownEvent(mapBrowserEvent);\n if (handled) {\n mapBrowserEvent.preventDefault();\n }\n this.handlingDownUpSequence = handled;\n stopEvent = this.stopDown(handled);\n } else if (mapBrowserEvent.type == MapBrowserEventType.POINTERMOVE) {\n this.handleMoveEvent(mapBrowserEvent);\n }\n }\n return !stopEvent;\n };\n\n /**\n * Handle pointer move events.\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @protected\n */\n PointerInteraction.prototype.handleMoveEvent = function handleMoveEvent (mapBrowserEvent) {};\n\n /**\n * Handle pointer up events.\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @return {boolean} If the event was consumed.\n * @protected\n */\n PointerInteraction.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n return false;\n };\n\n /**\n * This function is used to determine if \"down\" events should be propagated\n * to other interactions or should be stopped.\n * @param {boolean} handled Was the event handled by the interaction?\n * @return {boolean} Should the `down` event be stopped?\n */\n PointerInteraction.prototype.stopDown = function stopDown (handled) {\n return handled;\n };\n\n /**\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @private\n */\n PointerInteraction.prototype.updateTrackedPointers_ = function updateTrackedPointers_ (mapBrowserEvent) {\n if (isPointerDraggingEvent(mapBrowserEvent)) {\n var event = mapBrowserEvent.pointerEvent;\n\n var id = event.pointerId.toString();\n if (mapBrowserEvent.type == MapBrowserEventType.POINTERUP) {\n delete this.trackedPointers_[id];\n } else if (mapBrowserEvent.type ==\n MapBrowserEventType.POINTERDOWN) {\n this.trackedPointers_[id] = event;\n } else if (id in this.trackedPointers_) {\n // update only when there was a pointerdown event for this pointer\n this.trackedPointers_[id] = event;\n }\n this.targetPointers = getValues(this.trackedPointers_);\n }\n };\n\n return PointerInteraction;\n}(Interaction));\n\n\n/**\n * @param {Array<import(\"../pointer/PointerEvent.js\").default>} pointerEvents List of events.\n * @return {import(\"../pixel.js\").Pixel} Centroid pixel.\n */\nexport function centroid(pointerEvents) {\n var length = pointerEvents.length;\n var clientX = 0;\n var clientY = 0;\n for (var i = 0; i < length; i++) {\n clientX += pointerEvents[i].clientX;\n clientY += pointerEvents[i].clientY;\n }\n return [clientX / length, clientY / length];\n}\n\n\n/**\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @return {boolean} Whether the event is a pointerdown, pointerdrag\n * or pointerup event.\n */\nfunction isPointerDraggingEvent(mapBrowserEvent) {\n var type = mapBrowserEvent.type;\n return type === MapBrowserEventType.POINTERDOWN ||\n type === MapBrowserEventType.POINTERDRAG ||\n type === MapBrowserEventType.POINTERUP;\n}\n\n\nexport default PointerInteraction;\n\n//# sourceMappingURL=Pointer.js.map","/**\n * @module ol/interaction/DragPan\n */\nimport ViewHint from '../ViewHint.js';\nimport {scale as scaleCoordinate, rotate as rotateCoordinate, add as addCoordinate} from '../coordinate.js';\nimport {easeOut} from '../easing.js';\nimport {noModifierKeys} from '../events/condition.js';\nimport {FALSE} from '../functions.js';\nimport PointerInteraction, {centroid as centroidFromPointers} from './Pointer.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~noModifierKeys}.\n * @property {import(\"../Kinetic.js\").default} [kinetic] Kinetic inertia to apply to the pan.\n */\n\n\n/**\n * @classdesc\n * Allows the user to pan the map by dragging the map.\n * @api\n */\nvar DragPan = /*@__PURE__*/(function (PointerInteraction) {\n function DragPan(opt_options) {\n\n PointerInteraction.call(this, {\n stopDown: FALSE\n });\n\n var options = opt_options ? opt_options : {};\n\n /**\n * @private\n * @type {import(\"../Kinetic.js\").default|undefined}\n */\n this.kinetic_ = options.kinetic;\n\n /**\n * @type {import(\"../pixel.js\").Pixel}\n */\n this.lastCentroid = null;\n\n /**\n * @type {number}\n */\n this.lastPointersCount_;\n\n /**\n * @type {boolean}\n */\n this.panning_ = false;\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition ? options.condition : noModifierKeys;\n\n /**\n * @private\n * @type {boolean}\n */\n this.noKinetic_ = false;\n\n }\n\n if ( PointerInteraction ) DragPan.__proto__ = PointerInteraction;\n DragPan.prototype = Object.create( PointerInteraction && PointerInteraction.prototype );\n DragPan.prototype.constructor = DragPan;\n\n /**\n * @inheritDoc\n */\n DragPan.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {\n if (!this.panning_) {\n this.panning_ = true;\n this.getMap().getView().setHint(ViewHint.INTERACTING, 1);\n }\n var targetPointers = this.targetPointers;\n var centroid = centroidFromPointers(targetPointers);\n if (targetPointers.length == this.lastPointersCount_) {\n if (this.kinetic_) {\n this.kinetic_.update(centroid[0], centroid[1]);\n }\n if (this.lastCentroid) {\n var deltaX = this.lastCentroid[0] - centroid[0];\n var deltaY = centroid[1] - this.lastCentroid[1];\n var map = mapBrowserEvent.map;\n var view = map.getView();\n var center = [deltaX, deltaY];\n scaleCoordinate(center, view.getResolution());\n rotateCoordinate(center, view.getRotation());\n addCoordinate(center, view.getCenter());\n center = view.constrainCenter(center);\n view.setCenter(center);\n }\n } else if (this.kinetic_) {\n // reset so we don't overestimate the kinetic energy after\n // after one finger down, tiny drag, second finger down\n this.kinetic_.begin();\n }\n this.lastCentroid = centroid;\n this.lastPointersCount_ = targetPointers.length;\n };\n\n /**\n * @inheritDoc\n */\n DragPan.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n var map = mapBrowserEvent.map;\n var view = map.getView();\n if (this.targetPointers.length === 0) {\n if (!this.noKinetic_ && this.kinetic_ && this.kinetic_.end()) {\n var distance = this.kinetic_.getDistance();\n var angle = this.kinetic_.getAngle();\n var center = /** @type {!import(\"../coordinate.js\").Coordinate} */ (view.getCenter());\n var centerpx = map.getPixelFromCoordinate(center);\n var dest = map.getCoordinateFromPixel([\n centerpx[0] - distance * Math.cos(angle),\n centerpx[1] - distance * Math.sin(angle)\n ]);\n view.animate({\n center: view.constrainCenter(dest),\n duration: 500,\n easing: easeOut\n });\n }\n if (this.panning_) {\n this.panning_ = false;\n view.setHint(ViewHint.INTERACTING, -1);\n }\n return false;\n } else {\n if (this.kinetic_) {\n // reset so we don't overestimate the kinetic energy after\n // after one finger up, tiny drag, second finger up\n this.kinetic_.begin();\n }\n this.lastCentroid = null;\n return true;\n }\n };\n\n /**\n * @inheritDoc\n */\n DragPan.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n if (this.targetPointers.length > 0 && this.condition_(mapBrowserEvent)) {\n var map = mapBrowserEvent.map;\n var view = map.getView();\n this.lastCentroid = null;\n // stop any current animation\n if (view.getAnimating()) {\n view.setCenter(mapBrowserEvent.frameState.viewState.center);\n }\n if (this.kinetic_) {\n this.kinetic_.begin();\n }\n // No kinetic as soon as more than one pointer on the screen is\n // detected. This is to prevent nasty pans after pinch.\n this.noKinetic_ = this.targetPointers.length > 1;\n return true;\n } else {\n return false;\n }\n };\n\n return DragPan;\n}(PointerInteraction));\n\nexport default DragPan;\n\n//# sourceMappingURL=DragPan.js.map","/**\n * @module ol/interaction/DragRotate\n */\nimport {disable} from '../rotationconstraint.js';\nimport ViewHint from '../ViewHint.js';\nimport {altShiftKeysOnly, mouseOnly, mouseActionButton} from '../events/condition.js';\nimport {FALSE} from '../functions.js';\nimport {rotate, rotateWithoutConstraints} from './Interaction.js';\nimport PointerInteraction from './Pointer.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an\n * {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~altShiftKeysOnly}.\n * @property {number} [duration=250] Animation duration in milliseconds.\n */\n\n\n/**\n * @classdesc\n * Allows the user to rotate the map by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when the alt and shift keys are held down.\n *\n * This interaction is only supported for mouse devices.\n * @api\n */\nvar DragRotate = /*@__PURE__*/(function (PointerInteraction) {\n function DragRotate(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n PointerInteraction.call(this, {\n stopDown: FALSE\n });\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition ? options.condition : altShiftKeysOnly;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.lastAngle_ = undefined;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n }\n\n if ( PointerInteraction ) DragRotate.__proto__ = PointerInteraction;\n DragRotate.prototype = Object.create( PointerInteraction && PointerInteraction.prototype );\n DragRotate.prototype.constructor = DragRotate;\n\n /**\n * @inheritDoc\n */\n DragRotate.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return;\n }\n\n var map = mapBrowserEvent.map;\n var view = map.getView();\n if (view.getConstraints().rotation === disable) {\n return;\n }\n var size = map.getSize();\n var offset = mapBrowserEvent.pixel;\n var theta =\n Math.atan2(size[1] / 2 - offset[1], offset[0] - size[0] / 2);\n if (this.lastAngle_ !== undefined) {\n var delta = theta - this.lastAngle_;\n var rotation = view.getRotation();\n rotateWithoutConstraints(view, rotation - delta);\n }\n this.lastAngle_ = theta;\n };\n\n\n /**\n * @inheritDoc\n */\n DragRotate.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return true;\n }\n\n var map = mapBrowserEvent.map;\n var view = map.getView();\n view.setHint(ViewHint.INTERACTING, -1);\n var rotation = view.getRotation();\n rotate(view, rotation, undefined, this.duration_);\n return false;\n };\n\n\n /**\n * @inheritDoc\n */\n DragRotate.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return false;\n }\n\n if (mouseActionButton(mapBrowserEvent) && this.condition_(mapBrowserEvent)) {\n var map = mapBrowserEvent.map;\n map.getView().setHint(ViewHint.INTERACTING, 1);\n this.lastAngle_ = undefined;\n return true;\n } else {\n return false;\n }\n };\n\n return DragRotate;\n}(PointerInteraction));\n\nexport default DragRotate;\n\n//# sourceMappingURL=DragRotate.js.map","/**\n * @module ol/render/Box\n */\n\nimport Disposable from '../Disposable.js';\nimport Polygon from '../geom/Polygon.js';\n\nvar RenderBox = /*@__PURE__*/(function (Disposable) {\n function RenderBox(className) {\n Disposable.call(this);\n\n /**\n * @type {import(\"../geom/Polygon.js\").default}\n * @private\n */\n this.geometry_ = null;\n\n /**\n * @type {HTMLDivElement}\n * @private\n */\n this.element_ = /** @type {HTMLDivElement} */ (document.createElement('div'));\n this.element_.style.position = 'absolute';\n this.element_.className = 'ol-box ' + className;\n\n /**\n * @private\n * @type {import(\"../PluggableMap.js\").default}\n */\n this.map_ = null;\n\n /**\n * @private\n * @type {import(\"../pixel.js\").Pixel}\n */\n this.startPixel_ = null;\n\n /**\n * @private\n * @type {import(\"../pixel.js\").Pixel}\n */\n this.endPixel_ = null;\n\n }\n\n if ( Disposable ) RenderBox.__proto__ = Disposable;\n RenderBox.prototype = Object.create( Disposable && Disposable.prototype );\n RenderBox.prototype.constructor = RenderBox;\n\n /**\n * @inheritDoc\n */\n RenderBox.prototype.disposeInternal = function disposeInternal () {\n this.setMap(null);\n };\n\n /**\n * @private\n */\n RenderBox.prototype.render_ = function render_ () {\n var startPixel = this.startPixel_;\n var endPixel = this.endPixel_;\n var px = 'px';\n var style = this.element_.style;\n style.left = Math.min(startPixel[0], endPixel[0]) + px;\n style.top = Math.min(startPixel[1], endPixel[1]) + px;\n style.width = Math.abs(endPixel[0] - startPixel[0]) + px;\n style.height = Math.abs(endPixel[1] - startPixel[1]) + px;\n };\n\n /**\n * @param {import(\"../PluggableMap.js\").default} map Map.\n */\n RenderBox.prototype.setMap = function setMap (map) {\n if (this.map_) {\n this.map_.getOverlayContainer().removeChild(this.element_);\n var style = this.element_.style;\n style.left = style.top = style.width = style.height = 'inherit';\n }\n this.map_ = map;\n if (this.map_) {\n this.map_.getOverlayContainer().appendChild(this.element_);\n }\n };\n\n /**\n * @param {import(\"../pixel.js\").Pixel} startPixel Start pixel.\n * @param {import(\"../pixel.js\").Pixel} endPixel End pixel.\n */\n RenderBox.prototype.setPixels = function setPixels (startPixel, endPixel) {\n this.startPixel_ = startPixel;\n this.endPixel_ = endPixel;\n this.createOrUpdateGeometry();\n this.render_();\n };\n\n /**\n * Creates or updates the cached geometry.\n */\n RenderBox.prototype.createOrUpdateGeometry = function createOrUpdateGeometry () {\n var startPixel = this.startPixel_;\n var endPixel = this.endPixel_;\n var pixels = [\n startPixel,\n [startPixel[0], endPixel[1]],\n endPixel,\n [endPixel[0], startPixel[1]]\n ];\n var coordinates = pixels.map(this.map_.getCoordinateFromPixel, this.map_);\n // close the polygon\n coordinates[4] = coordinates[0].slice();\n if (!this.geometry_) {\n this.geometry_ = new Polygon([coordinates]);\n } else {\n this.geometry_.setCoordinates([coordinates]);\n }\n };\n\n /**\n * @return {import(\"../geom/Polygon.js\").default} Geometry.\n */\n RenderBox.prototype.getGeometry = function getGeometry () {\n return this.geometry_;\n };\n\n return RenderBox;\n}(Disposable));\n\n\nexport default RenderBox;\n\n//# sourceMappingURL=Box.js.map","/**\n * @module ol/interaction/DragBox\n */\n// FIXME draw drag box\nimport Event from '../events/Event.js';\nimport {always, mouseOnly, mouseActionButton} from '../events/condition.js';\nimport {VOID} from '../functions.js';\nimport PointerInteraction from './Pointer.js';\nimport RenderBox from '../render/Box.js';\n\n\n/**\n * A function that takes a {@link module:ol/MapBrowserEvent} and two\n * {@link module:ol/pixel~Pixel}s and returns a `{boolean}`. If the condition is met,\n * true should be returned.\n * @typedef {function(this: ?, import(\"../MapBrowserEvent.js\").default, import(\"../pixel.js\").Pixel, import(\"../pixel.js\").Pixel):boolean} EndCondition\n */\n\n\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-dragbox'] CSS class name for styling the box.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link ol/events/condition~always}.\n * @property {number} [minArea=64] The minimum area of the box in pixel, this value is used by the default\n * `boxEndCondition` function.\n * @property {EndCondition} [boxEndCondition] A function that takes a {@link module:ol/MapBrowserEvent~MapBrowserEvent} and two\n * {@link module:ol/pixel~Pixel}s to indicate whether a `boxend` event should be fired.\n * Default is `true` if the area of the box is bigger than the `minArea` option.\n * @property {function(this:DragBox, import(\"../MapBrowserEvent.js\").default)} onBoxEnd Code to execute just\n * before `boxend` is fired.\n */\n\n\n/**\n * @enum {string}\n */\nvar DragBoxEventType = {\n /**\n * Triggered upon drag box start.\n * @event DragBoxEvent#boxstart\n * @api\n */\n BOXSTART: 'boxstart',\n\n /**\n * Triggered on drag when box is active.\n * @event DragBoxEvent#boxdrag\n * @api\n */\n BOXDRAG: 'boxdrag',\n\n /**\n * Triggered upon drag box end.\n * @event DragBoxEvent#boxend\n * @api\n */\n BOXEND: 'boxend'\n};\n\n\n/**\n * @classdesc\n * Events emitted by {@link module:ol/interaction/DragBox~DragBox} instances are instances of\n * this type.\n */\nvar DragBoxEvent = /*@__PURE__*/(function (Event) {\n function DragBoxEvent(type, coordinate, mapBrowserEvent) {\n Event.call(this, type);\n\n /**\n * The coordinate of the drag event.\n * @const\n * @type {import(\"../coordinate.js\").Coordinate}\n * @api\n */\n this.coordinate = coordinate;\n\n /**\n * @const\n * @type {import(\"../MapBrowserEvent.js\").default}\n * @api\n */\n this.mapBrowserEvent = mapBrowserEvent;\n\n }\n\n if ( Event ) DragBoxEvent.__proto__ = Event;\n DragBoxEvent.prototype = Object.create( Event && Event.prototype );\n DragBoxEvent.prototype.constructor = DragBoxEvent;\n\n return DragBoxEvent;\n}(Event));\n\n\n/**\n * @classdesc\n * Allows the user to draw a vector box by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when the shift or other key is held down. This is used, for example,\n * for zooming to a specific area of the map\n * (see {@link module:ol/interaction/DragZoom~DragZoom} and\n * {@link module:ol/interaction/DragRotateAndZoom}).\n *\n * This interaction is only supported for mouse devices.\n *\n * @fires DragBoxEvent\n * @api\n */\nvar DragBox = /*@__PURE__*/(function (PointerInteraction) {\n function DragBox(opt_options) {\n\n PointerInteraction.call(this);\n\n var options = opt_options ? opt_options : {};\n\n /**\n * @type {import(\"../render/Box.js\").default}\n * @private\n */\n this.box_ = new RenderBox(options.className || 'ol-dragbox');\n\n /**\n * @type {number}\n * @private\n */\n this.minArea_ = options.minArea !== undefined ? options.minArea : 64;\n\n /**\n * Function to execute just before `onboxend` is fired\n * @type {function(this:DragBox, import(\"../MapBrowserEvent.js\").default)}\n * @private\n */\n this.onBoxEnd_ = options.onBoxEnd ? options.onBoxEnd : VOID;\n\n /**\n * @type {import(\"../pixel.js\").Pixel}\n * @private\n */\n this.startPixel_ = null;\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition ? options.condition : always;\n\n /**\n * @private\n * @type {EndCondition}\n */\n this.boxEndCondition_ = options.boxEndCondition ?\n options.boxEndCondition : this.defaultBoxEndCondition;\n }\n\n if ( PointerInteraction ) DragBox.__proto__ = PointerInteraction;\n DragBox.prototype = Object.create( PointerInteraction && PointerInteraction.prototype );\n DragBox.prototype.constructor = DragBox;\n\n /**\n * The default condition for determining whether the boxend event\n * should fire.\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent The originating MapBrowserEvent\n * leading to the box end.\n * @param {import(\"../pixel.js\").Pixel} startPixel The starting pixel of the box.\n * @param {import(\"../pixel.js\").Pixel} endPixel The end pixel of the box.\n * @return {boolean} Whether or not the boxend condition should be fired.\n */\n DragBox.prototype.defaultBoxEndCondition = function defaultBoxEndCondition (mapBrowserEvent, startPixel, endPixel) {\n var width = endPixel[0] - startPixel[0];\n var height = endPixel[1] - startPixel[1];\n return width * width + height * height >= this.minArea_;\n };\n\n /**\n * Returns geometry of last drawn box.\n * @return {import(\"../geom/Polygon.js\").default} Geometry.\n * @api\n */\n DragBox.prototype.getGeometry = function getGeometry () {\n return this.box_.getGeometry();\n };\n\n /**\n * @inheritDoc\n */\n DragBox.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return;\n }\n\n this.box_.setPixels(this.startPixel_, mapBrowserEvent.pixel);\n\n this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXDRAG,\n mapBrowserEvent.coordinate, mapBrowserEvent));\n };\n\n /**\n * @inheritDoc\n */\n DragBox.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return true;\n }\n\n this.box_.setMap(null);\n\n if (this.boxEndCondition_(mapBrowserEvent, this.startPixel_, mapBrowserEvent.pixel)) {\n this.onBoxEnd_(mapBrowserEvent);\n this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXEND,\n mapBrowserEvent.coordinate, mapBrowserEvent));\n }\n return false;\n };\n\n /**\n * @inheritDoc\n */\n DragBox.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n if (!mouseOnly(mapBrowserEvent)) {\n return false;\n }\n\n if (mouseActionButton(mapBrowserEvent) &&\n this.condition_(mapBrowserEvent)) {\n this.startPixel_ = mapBrowserEvent.pixel;\n this.box_.setMap(mapBrowserEvent.map);\n this.box_.setPixels(this.startPixel_, this.startPixel_);\n this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXSTART,\n mapBrowserEvent.coordinate, mapBrowserEvent));\n return true;\n } else {\n return false;\n }\n };\n\n return DragBox;\n}(PointerInteraction));\n\n\nexport default DragBox;\n\n//# sourceMappingURL=DragBox.js.map","/**\n * @module ol/interaction/DragZoom\n */\nimport {easeOut} from '../easing.js';\nimport {shiftKeyOnly} from '../events/condition.js';\nimport {createOrUpdateFromCoordinates, getBottomLeft, getCenter, getTopRight, scaleFromCenter} from '../extent.js';\nimport DragBox from './DragBox.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-dragzoom'] CSS class name for styling the\n * box.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~shiftKeyOnly}.\n * @property {number} [duration=200] Animation duration in milliseconds.\n * @property {boolean} [out=false] Use interaction for zooming out.\n */\n\n\n/**\n * @classdesc\n * Allows the user to zoom the map by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when a key, shift by default, is held down.\n *\n * To change the style of the box, use CSS and the `.ol-dragzoom` selector, or\n * your custom one configured with `className`.\n * @api\n */\nvar DragZoom = /*@__PURE__*/(function (DragBox) {\n function DragZoom(opt_options) {\n var options = opt_options ? opt_options : {};\n\n var condition = options.condition ? options.condition : shiftKeyOnly;\n\n DragBox.call(this, {\n condition: condition,\n className: options.className || 'ol-dragzoom',\n onBoxEnd: onBoxEnd\n });\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 200;\n\n /**\n * @private\n * @type {boolean}\n */\n this.out_ = options.out !== undefined ? options.out : false;\n }\n\n if ( DragBox ) DragZoom.__proto__ = DragBox;\n DragZoom.prototype = Object.create( DragBox && DragBox.prototype );\n DragZoom.prototype.constructor = DragZoom;\n\n return DragZoom;\n}(DragBox));\n\n\n/**\n * @this {DragZoom}\n */\nfunction onBoxEnd() {\n var map = this.getMap();\n var view = /** @type {!import(\"../View.js\").default} */ (map.getView());\n var size = /** @type {!import(\"../size.js\").Size} */ (map.getSize());\n var extent = this.getGeometry().getExtent();\n\n if (this.out_) {\n var mapExtent = view.calculateExtent(size);\n var boxPixelExtent = createOrUpdateFromCoordinates([\n map.getPixelFromCoordinate(getBottomLeft(extent)),\n map.getPixelFromCoordinate(getTopRight(extent))]);\n var factor = view.getResolutionForExtent(boxPixelExtent, size);\n\n scaleFromCenter(mapExtent, 1 / factor);\n extent = mapExtent;\n }\n\n var resolution = view.constrainResolution(\n view.getResolutionForExtent(extent, size));\n\n var center = getCenter(extent);\n center = view.constrainCenter(center);\n\n view.animate({\n resolution: resolution,\n center: center,\n duration: this.duration_,\n easing: easeOut\n });\n}\n\n\nexport default DragZoom;\n\n//# sourceMappingURL=DragZoom.js.map","/**\n * @module ol/events/KeyCode\n */\n\n/**\n * @enum {number}\n * @const\n */\nexport default {\n LEFT: 37,\n UP: 38,\n RIGHT: 39,\n DOWN: 40\n};\n\n//# sourceMappingURL=KeyCode.js.map","/**\n * @module ol/interaction/KeyboardPan\n */\nimport {rotate as rotateCoordinate} from '../coordinate.js';\nimport EventType from '../events/EventType.js';\nimport KeyCode from '../events/KeyCode.js';\nimport {noModifierKeys, targetNotEditable} from '../events/condition.js';\nimport Interaction, {pan} from './Interaction.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~noModifierKeys} and\n * {@link module:ol/events/condition~targetNotEditable}.\n * @property {number} [duration=100] Animation duration in milliseconds.\n * @property {number} [pixelDelta=128] The amount of pixels to pan on each key\n * press.\n */\n\n\n/**\n * @classdesc\n * Allows the user to pan the map using keyboard arrows.\n * Note that, although this interaction is by default included in maps,\n * the keys can only be used when browser focus is on the element to which\n * the keyboard events are attached. By default, this is the map div,\n * though you can change this with the `keyboardEventTarget` in\n * {@link module:ol/Map~Map}. `document` never loses focus but, for any other\n * element, focus will have to be on, and returned to, this element if the keys\n * are to function.\n * See also {@link module:ol/interaction/KeyboardZoom~KeyboardZoom}.\n * @api\n */\nvar KeyboardPan = /*@__PURE__*/(function (Interaction) {\n function KeyboardPan(opt_options) {\n\n Interaction.call(this, {\n handleEvent: handleEvent\n });\n\n var options = opt_options || {};\n\n /**\n * @private\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Browser event.\n * @return {boolean} Combined condition result.\n */\n this.defaultCondition_ = function(mapBrowserEvent) {\n return noModifierKeys(mapBrowserEvent) &&\n targetNotEditable(mapBrowserEvent);\n };\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition !== undefined ?\n options.condition : this.defaultCondition_;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 100;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelDelta_ = options.pixelDelta !== undefined ?\n options.pixelDelta : 128;\n\n }\n\n if ( Interaction ) KeyboardPan.__proto__ = Interaction;\n KeyboardPan.prototype = Object.create( Interaction && Interaction.prototype );\n KeyboardPan.prototype.constructor = KeyboardPan;\n\n return KeyboardPan;\n}(Interaction));\n\n\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} if it was a\n * `KeyEvent`, and decides the direction to pan to (if an arrow key was\n * pressed).\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {KeyboardPan}\n */\nfunction handleEvent(mapBrowserEvent) {\n var stopEvent = false;\n if (mapBrowserEvent.type == EventType.KEYDOWN) {\n var keyEvent = /** @type {KeyboardEvent} */ (mapBrowserEvent.originalEvent);\n var keyCode = keyEvent.keyCode;\n if (this.condition_(mapBrowserEvent) &&\n (keyCode == KeyCode.DOWN ||\n keyCode == KeyCode.LEFT ||\n keyCode == KeyCode.RIGHT ||\n keyCode == KeyCode.UP)) {\n var map = mapBrowserEvent.map;\n var view = map.getView();\n var mapUnitsDelta = view.getResolution() * this.pixelDelta_;\n var deltaX = 0, deltaY = 0;\n if (keyCode == KeyCode.DOWN) {\n deltaY = -mapUnitsDelta;\n } else if (keyCode == KeyCode.LEFT) {\n deltaX = -mapUnitsDelta;\n } else if (keyCode == KeyCode.RIGHT) {\n deltaX = mapUnitsDelta;\n } else {\n deltaY = mapUnitsDelta;\n }\n var delta = [deltaX, deltaY];\n rotateCoordinate(delta, view.getRotation());\n pan(view, delta, this.duration_);\n mapBrowserEvent.preventDefault();\n stopEvent = true;\n }\n }\n return !stopEvent;\n}\n\nexport default KeyboardPan;\n\n//# sourceMappingURL=KeyboardPan.js.map","/**\n * @module ol/interaction/KeyboardZoom\n */\nimport EventType from '../events/EventType.js';\nimport {targetNotEditable} from '../events/condition.js';\nimport Interaction, {zoomByDelta} from './Interaction.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [duration=100] Animation duration in milliseconds.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~targetNotEditable}.\n * @property {number} [delta=1] The zoom level delta on each key press.\n */\n\n\n/**\n * @classdesc\n * Allows the user to zoom the map using keyboard + and -.\n * Note that, although this interaction is by default included in maps,\n * the keys can only be used when browser focus is on the element to which\n * the keyboard events are attached. By default, this is the map div,\n * though you can change this with the `keyboardEventTarget` in\n * {@link module:ol/Map~Map}. `document` never loses focus but, for any other\n * element, focus will have to be on, and returned to, this element if the keys\n * are to function.\n * See also {@link module:ol/interaction/KeyboardPan~KeyboardPan}.\n * @api\n */\nvar KeyboardZoom = /*@__PURE__*/(function (Interaction) {\n function KeyboardZoom(opt_options) {\n\n Interaction.call(this, {\n handleEvent: handleEvent\n });\n\n var options = opt_options ? opt_options : {};\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition ? options.condition : targetNotEditable;\n\n /**\n * @private\n * @type {number}\n */\n this.delta_ = options.delta ? options.delta : 1;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 100;\n\n }\n\n if ( Interaction ) KeyboardZoom.__proto__ = Interaction;\n KeyboardZoom.prototype = Object.create( Interaction && Interaction.prototype );\n KeyboardZoom.prototype.constructor = KeyboardZoom;\n\n return KeyboardZoom;\n}(Interaction));\n\n\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} if it was a\n * `KeyEvent`, and decides whether to zoom in or out (depending on whether the\n * key pressed was '+' or '-').\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {KeyboardZoom}\n */\nfunction handleEvent(mapBrowserEvent) {\n var stopEvent = false;\n if (mapBrowserEvent.type == EventType.KEYDOWN ||\n mapBrowserEvent.type == EventType.KEYPRESS) {\n var keyEvent = /** @type {KeyboardEvent} */ (mapBrowserEvent.originalEvent);\n var charCode = keyEvent.charCode;\n if (this.condition_(mapBrowserEvent) &&\n (charCode == '+'.charCodeAt(0) || charCode == '-'.charCodeAt(0))) {\n var map = mapBrowserEvent.map;\n var delta = (charCode == '+'.charCodeAt(0)) ? this.delta_ : -this.delta_;\n var view = map.getView();\n zoomByDelta(view, delta, undefined, this.duration_);\n mapBrowserEvent.preventDefault();\n stopEvent = true;\n }\n }\n return !stopEvent;\n}\n\nexport default KeyboardZoom;\n\n//# sourceMappingURL=KeyboardZoom.js.map","/**\n * @module ol/interaction/MouseWheelZoom\n */\nimport ViewHint from '../ViewHint.js';\nimport {always} from '../events/condition.js';\nimport {easeOut} from '../easing.js';\nimport EventType from '../events/EventType.js';\nimport {DEVICE_PIXEL_RATIO, FIREFOX, SAFARI} from '../has.js';\nimport Interaction, {zoomByDelta} from './Interaction.js';\nimport {clamp} from '../math.js';\n\n\n/**\n * Maximum mouse wheel delta.\n * @type {number}\n */\nvar MAX_DELTA = 1;\n\n\n/**\n * @enum {string}\n */\nexport var Mode = {\n TRACKPAD: 'trackpad',\n WHEEL: 'wheel'\n};\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~always}.\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {number} [timeout=80] Mouse wheel timeout duration in milliseconds.\n * @property {boolean} [constrainResolution=false] When using a trackpad or\n * magic mouse, zoom to the closest integer zoom level after the scroll gesture\n * ends.\n * @property {boolean} [useAnchor=true] Enable zooming using the mouse's\n * location as the anchor. When set to `false`, zooming in and out will zoom to\n * the center of the screen instead of zooming on the mouse's location.\n */\n\n\n/**\n * @classdesc\n * Allows the user to zoom the map by scrolling the mouse wheel.\n * @api\n */\nvar MouseWheelZoom = /*@__PURE__*/(function (Interaction) {\n function MouseWheelZoom(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n Interaction.call(/** @type {import(\"./Interaction.js\").InteractionOptions} */ this, (options));\n\n /**\n * @private\n * @type {number}\n */\n this.delta_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n /**\n * @private\n * @type {number}\n */\n this.timeout_ = options.timeout !== undefined ? options.timeout : 80;\n\n /**\n * @private\n * @type {boolean}\n */\n this.useAnchor_ = options.useAnchor !== undefined ? options.useAnchor : true;\n\n /**\n * @private\n * @type {boolean}\n */\n this.constrainResolution_ = options.constrainResolution || false;\n\n /**\n * @private\n * @type {import(\"../events/condition.js\").Condition}\n */\n this.condition_ = options.condition ? options.condition : always;\n\n /**\n * @private\n * @type {?import(\"../coordinate.js\").Coordinate}\n */\n this.lastAnchor_ = null;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.startTime_ = undefined;\n\n /**\n * @private\n * @type {?}\n */\n this.timeoutId_;\n\n /**\n * @private\n * @type {Mode|undefined}\n */\n this.mode_ = undefined;\n\n /**\n * Trackpad events separated by this delay will be considered separate\n * interactions.\n * @type {number}\n */\n this.trackpadEventGap_ = 400;\n\n /**\n * @type {?}\n */\n this.trackpadTimeoutId_;\n\n /**\n * The number of delta values per zoom level\n * @private\n * @type {number}\n */\n this.trackpadDeltaPerZoom_ = 300;\n\n /**\n * The zoom factor by which scroll zooming is allowed to exceed the limits.\n * @private\n * @type {number}\n */\n this.trackpadZoomBuffer_ = 1.5;\n\n }\n\n if ( Interaction ) MouseWheelZoom.__proto__ = Interaction;\n MouseWheelZoom.prototype = Object.create( Interaction && Interaction.prototype );\n MouseWheelZoom.prototype.constructor = MouseWheelZoom;\n\n /**\n * @private\n */\n MouseWheelZoom.prototype.decrementInteractingHint_ = function decrementInteractingHint_ () {\n this.trackpadTimeoutId_ = undefined;\n var view = this.getMap().getView();\n view.setHint(ViewHint.INTERACTING, -1);\n };\n\n /**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} (if it was a mousewheel-event) and eventually\n * zooms the map.\n * @override\n */\n MouseWheelZoom.prototype.handleEvent = function handleEvent (mapBrowserEvent) {\n if (!this.condition_(mapBrowserEvent)) {\n return true;\n }\n var type = mapBrowserEvent.type;\n if (type !== EventType.WHEEL && type !== EventType.MOUSEWHEEL) {\n return true;\n }\n\n mapBrowserEvent.preventDefault();\n\n var map = mapBrowserEvent.map;\n var wheelEvent = /** @type {WheelEvent} */ (mapBrowserEvent.originalEvent);\n\n if (this.useAnchor_) {\n this.lastAnchor_ = mapBrowserEvent.coordinate;\n }\n\n // Delta normalisation inspired by\n // https://github.com/mapbox/mapbox-gl-js/blob/001c7b9/js/ui/handler/scroll_zoom.js\n var delta;\n if (mapBrowserEvent.type == EventType.WHEEL) {\n delta = wheelEvent.deltaY;\n if (FIREFOX &&\n wheelEvent.deltaMode === WheelEvent.DOM_DELTA_PIXEL) {\n delta /= DEVICE_PIXEL_RATIO;\n }\n if (wheelEvent.deltaMode === WheelEvent.DOM_DELTA_LINE) {\n delta *= 40;\n }\n } else if (mapBrowserEvent.type == EventType.MOUSEWHEEL) {\n delta = -wheelEvent.wheelDeltaY;\n if (SAFARI) {\n delta /= 3;\n }\n }\n\n if (delta === 0) {\n return false;\n }\n\n var now = Date.now();\n\n if (this.startTime_ === undefined) {\n this.startTime_ = now;\n }\n\n if (!this.mode_ || now - this.startTime_ > this.trackpadEventGap_) {\n this.mode_ = Math.abs(delta) < 4 ?\n Mode.TRACKPAD :\n Mode.WHEEL;\n }\n\n if (this.mode_ === Mode.TRACKPAD) {\n var view = map.getView();\n if (this.trackpadTimeoutId_) {\n clearTimeout(this.trackpadTimeoutId_);\n } else {\n view.setHint(ViewHint.INTERACTING, 1);\n }\n this.trackpadTimeoutId_ = setTimeout(this.decrementInteractingHint_.bind(this), this.trackpadEventGap_);\n var resolution = view.getResolution() * Math.pow(2, delta / this.trackpadDeltaPerZoom_);\n var minResolution = view.getMinResolution();\n var maxResolution = view.getMaxResolution();\n var rebound = 0;\n if (resolution < minResolution) {\n resolution = Math.max(resolution, minResolution / this.trackpadZoomBuffer_);\n rebound = 1;\n } else if (resolution > maxResolution) {\n resolution = Math.min(resolution, maxResolution * this.trackpadZoomBuffer_);\n rebound = -1;\n }\n if (this.lastAnchor_) {\n var center = view.calculateCenterZoom(resolution, this.lastAnchor_);\n view.setCenter(view.constrainCenter(center));\n }\n view.setResolution(resolution);\n\n if (rebound === 0 && this.constrainResolution_) {\n view.animate({\n resolution: view.constrainResolution(resolution, delta > 0 ? -1 : 1),\n easing: easeOut,\n anchor: this.lastAnchor_,\n duration: this.duration_\n });\n }\n\n if (rebound > 0) {\n view.animate({\n resolution: minResolution,\n easing: easeOut,\n anchor: this.lastAnchor_,\n duration: 500\n });\n } else if (rebound < 0) {\n view.animate({\n resolution: maxResolution,\n easing: easeOut,\n anchor: this.lastAnchor_,\n duration: 500\n });\n }\n this.startTime_ = now;\n return false;\n }\n\n this.delta_ += delta;\n\n var timeLeft = Math.max(this.timeout_ - (now - this.startTime_), 0);\n\n clearTimeout(this.timeoutId_);\n this.timeoutId_ = setTimeout(this.handleWheelZoom_.bind(this, map), timeLeft);\n\n return false;\n };\n\n /**\n * @private\n * @param {import(\"../PluggableMap.js\").default} map Map.\n */\n MouseWheelZoom.prototype.handleWheelZoom_ = function handleWheelZoom_ (map) {\n var view = map.getView();\n if (view.getAnimating()) {\n view.cancelAnimations();\n }\n var maxDelta = MAX_DELTA;\n var delta = clamp(this.delta_, -maxDelta, maxDelta);\n zoomByDelta(view, -delta, this.lastAnchor_, this.duration_);\n this.mode_ = undefined;\n this.delta_ = 0;\n this.lastAnchor_ = null;\n this.startTime_ = undefined;\n this.timeoutId_ = undefined;\n };\n\n /**\n * Enable or disable using the mouse's location as an anchor when zooming\n * @param {boolean} useAnchor true to zoom to the mouse's location, false\n * to zoom to the center of the map\n * @api\n */\n MouseWheelZoom.prototype.setMouseAnchor = function setMouseAnchor (useAnchor) {\n this.useAnchor_ = useAnchor;\n if (!useAnchor) {\n this.lastAnchor_ = null;\n }\n };\n\n return MouseWheelZoom;\n}(Interaction));\n\nexport default MouseWheelZoom;\n\n//# sourceMappingURL=MouseWheelZoom.js.map","/**\n * @module ol/interaction/PinchRotate\n */\nimport ViewHint from '../ViewHint.js';\nimport {FALSE} from '../functions.js';\nimport {rotate, rotateWithoutConstraints} from './Interaction.js';\nimport PointerInteraction, {centroid as centroidFromPointers} from './Pointer.js';\nimport {disable} from '../rotationconstraint.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] The duration of the animation in\n * milliseconds.\n * @property {number} [threshold=0.3] Minimal angle in radians to start a rotation.\n */\n\n\n/**\n * @classdesc\n * Allows the user to rotate the map by twisting with two fingers\n * on a touch screen.\n * @api\n */\nvar PinchRotate = /*@__PURE__*/(function (PointerInteraction) {\n function PinchRotate(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n var pointerOptions = /** @type {import(\"./Pointer.js\").Options} */ (options);\n\n if (!pointerOptions.stopDown) {\n pointerOptions.stopDown = FALSE;\n }\n\n PointerInteraction.call(this, pointerOptions);\n\n /**\n * @private\n * @type {import(\"../coordinate.js\").Coordinate}\n */\n this.anchor_ = null;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.lastAngle_ = undefined;\n\n /**\n * @private\n * @type {boolean}\n */\n this.rotating_ = false;\n\n /**\n * @private\n * @type {number}\n */\n this.rotationDelta_ = 0.0;\n\n /**\n * @private\n * @type {number}\n */\n this.threshold_ = options.threshold !== undefined ? options.threshold : 0.3;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 250;\n\n }\n\n if ( PointerInteraction ) PinchRotate.__proto__ = PointerInteraction;\n PinchRotate.prototype = Object.create( PointerInteraction && PointerInteraction.prototype );\n PinchRotate.prototype.constructor = PinchRotate;\n\n /**\n * @inheritDoc\n */\n PinchRotate.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {\n var rotationDelta = 0.0;\n\n var touch0 = this.targetPointers[0];\n var touch1 = this.targetPointers[1];\n\n // angle between touches\n var angle = Math.atan2(\n touch1.clientY - touch0.clientY,\n touch1.clientX - touch0.clientX);\n\n if (this.lastAngle_ !== undefined) {\n var delta = angle - this.lastAngle_;\n this.rotationDelta_ += delta;\n if (!this.rotating_ &&\n Math.abs(this.rotationDelta_) > this.threshold_) {\n this.rotating_ = true;\n }\n rotationDelta = delta;\n }\n this.lastAngle_ = angle;\n\n var map = mapBrowserEvent.map;\n var view = map.getView();\n if (view.getConstraints().rotation === disable) {\n return;\n }\n\n // rotate anchor point.\n // FIXME: should be the intersection point between the lines:\n // touch0,touch1 and previousTouch0,previousTouch1\n var viewportPosition = map.getViewport().getBoundingClientRect();\n var centroid = centroidFromPointers(this.targetPointers);\n centroid[0] -= viewportPosition.left;\n centroid[1] -= viewportPosition.top;\n this.anchor_ = map.getCoordinateFromPixel(centroid);\n\n // rotate\n if (this.rotating_) {\n var rotation = view.getRotation();\n map.render();\n rotateWithoutConstraints(view, rotation + rotationDelta, this.anchor_);\n }\n };\n\n /**\n * @inheritDoc\n */\n PinchRotate.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n if (this.targetPointers.length < 2) {\n var map = mapBrowserEvent.map;\n var view = map.getView();\n view.setHint(ViewHint.INTERACTING, -1);\n if (this.rotating_) {\n var rotation = view.getRotation();\n rotate(view, rotation, this.anchor_, this.duration_);\n }\n return false;\n } else {\n return true;\n }\n };\n\n /**\n * @inheritDoc\n */\n PinchRotate.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n if (this.targetPointers.length >= 2) {\n var map = mapBrowserEvent.map;\n this.anchor_ = null;\n this.lastAngle_ = undefined;\n this.rotating_ = false;\n this.rotationDelta_ = 0.0;\n if (!this.handlingDownUpSequence) {\n map.getView().setHint(ViewHint.INTERACTING, 1);\n }\n return true;\n } else {\n return false;\n }\n };\n\n return PinchRotate;\n}(PointerInteraction));\n\nexport default PinchRotate;\n\n//# sourceMappingURL=PinchRotate.js.map","/**\n * @module ol/interaction/PinchZoom\n */\nimport ViewHint from '../ViewHint.js';\nimport {FALSE} from '../functions.js';\nimport {zoom, zoomWithoutConstraints} from './Interaction.js';\nimport PointerInteraction, {centroid as centroidFromPointers} from './Pointer.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [duration=400] Animation duration in milliseconds.\n * @property {boolean} [constrainResolution=false] Zoom to the closest integer\n * zoom level after the pinch gesture ends.\n */\n\n\n/**\n * @classdesc\n * Allows the user to zoom the map by pinching with two fingers\n * on a touch screen.\n * @api\n */\nvar PinchZoom = /*@__PURE__*/(function (PointerInteraction) {\n function PinchZoom(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n var pointerOptions = /** @type {import(\"./Pointer.js\").Options} */ (options);\n\n if (!pointerOptions.stopDown) {\n pointerOptions.stopDown = FALSE;\n }\n\n PointerInteraction.call(this, pointerOptions);\n\n /**\n * @private\n * @type {boolean}\n */\n this.constrainResolution_ = options.constrainResolution || false;\n\n /**\n * @private\n * @type {import(\"../coordinate.js\").Coordinate}\n */\n this.anchor_ = null;\n\n /**\n * @private\n * @type {number}\n */\n this.duration_ = options.duration !== undefined ? options.duration : 400;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.lastDistance_ = undefined;\n\n /**\n * @private\n * @type {number}\n */\n this.lastScaleDelta_ = 1;\n\n }\n\n if ( PointerInteraction ) PinchZoom.__proto__ = PointerInteraction;\n PinchZoom.prototype = Object.create( PointerInteraction && PointerInteraction.prototype );\n PinchZoom.prototype.constructor = PinchZoom;\n\n /**\n * @inheritDoc\n */\n PinchZoom.prototype.handleDragEvent = function handleDragEvent (mapBrowserEvent) {\n var scaleDelta = 1.0;\n\n var touch0 = this.targetPointers[0];\n var touch1 = this.targetPointers[1];\n var dx = touch0.clientX - touch1.clientX;\n var dy = touch0.clientY - touch1.clientY;\n\n // distance between touches\n var distance = Math.sqrt(dx * dx + dy * dy);\n\n if (this.lastDistance_ !== undefined) {\n scaleDelta = this.lastDistance_ / distance;\n }\n this.lastDistance_ = distance;\n\n\n var map = mapBrowserEvent.map;\n var view = map.getView();\n var resolution = view.getResolution();\n var maxResolution = view.getMaxResolution();\n var minResolution = view.getMinResolution();\n var newResolution = resolution * scaleDelta;\n if (newResolution > maxResolution) {\n scaleDelta = maxResolution / resolution;\n newResolution = maxResolution;\n } else if (newResolution < minResolution) {\n scaleDelta = minResolution / resolution;\n newResolution = minResolution;\n }\n\n if (scaleDelta != 1.0) {\n this.lastScaleDelta_ = scaleDelta;\n }\n\n // scale anchor point.\n var viewportPosition = map.getViewport().getBoundingClientRect();\n var centroid = centroidFromPointers(this.targetPointers);\n centroid[0] -= viewportPosition.left;\n centroid[1] -= viewportPosition.top;\n this.anchor_ = map.getCoordinateFromPixel(centroid);\n\n // scale, bypass the resolution constraint\n map.render();\n zoomWithoutConstraints(view, newResolution, this.anchor_);\n };\n\n /**\n * @inheritDoc\n */\n PinchZoom.prototype.handleUpEvent = function handleUpEvent (mapBrowserEvent) {\n if (this.targetPointers.length < 2) {\n var map = mapBrowserEvent.map;\n var view = map.getView();\n view.setHint(ViewHint.INTERACTING, -1);\n var resolution = view.getResolution();\n if (this.constrainResolution_ ||\n resolution < view.getMinResolution() ||\n resolution > view.getMaxResolution()) {\n // Zoom to final resolution, with an animation, and provide a\n // direction not to zoom out/in if user was pinching in/out.\n // Direction is > 0 if pinching out, and < 0 if pinching in.\n var direction = this.lastScaleDelta_ - 1;\n zoom(view, resolution, this.anchor_, this.duration_, direction);\n }\n return false;\n } else {\n return true;\n }\n };\n\n /**\n * @inheritDoc\n */\n PinchZoom.prototype.handleDownEvent = function handleDownEvent (mapBrowserEvent) {\n if (this.targetPointers.length >= 2) {\n var map = mapBrowserEvent.map;\n this.anchor_ = null;\n this.lastDistance_ = undefined;\n this.lastScaleDelta_ = 1;\n if (!this.handlingDownUpSequence) {\n map.getView().setHint(ViewHint.INTERACTING, 1);\n }\n return true;\n } else {\n return false;\n }\n };\n\n return PinchZoom;\n}(PointerInteraction));\n\nexport default PinchZoom;\n\n//# sourceMappingURL=PinchZoom.js.map","/**\n * @module ol/interaction\n */\nimport Collection from './Collection.js';\nimport Kinetic from './Kinetic.js';\nimport DoubleClickZoom from './interaction/DoubleClickZoom.js';\nimport DragPan from './interaction/DragPan.js';\nimport DragRotate from './interaction/DragRotate.js';\nimport DragZoom from './interaction/DragZoom.js';\nimport KeyboardPan from './interaction/KeyboardPan.js';\nimport KeyboardZoom from './interaction/KeyboardZoom.js';\nimport MouseWheelZoom from './interaction/MouseWheelZoom.js';\nimport PinchRotate from './interaction/PinchRotate.js';\nimport PinchZoom from './interaction/PinchZoom.js';\nimport {focus} from './events/condition.js';\n\nexport {default as DoubleClickZoom} from './interaction/DoubleClickZoom.js';\nexport {default as DragAndDrop} from './interaction/DragAndDrop.js';\nexport {default as DragBox} from './interaction/DragBox.js';\nexport {default as DragPan} from './interaction/DragPan.js';\nexport {default as DragRotate} from './interaction/DragRotate.js';\nexport {default as DragRotateAndZoom} from './interaction/DragRotateAndZoom.js';\nexport {default as DragZoom} from './interaction/DragZoom.js';\nexport {default as Draw} from './interaction/Draw.js';\nexport {default as Extent} from './interaction/Extent.js';\nexport {default as Interaction} from './interaction/Interaction.js';\nexport {default as KeyboardPan} from './interaction/KeyboardPan.js';\nexport {default as KeyboardZoom} from './interaction/KeyboardZoom.js';\nexport {default as Modify} from './interaction/Modify.js';\nexport {default as MouseWheelZoom} from './interaction/MouseWheelZoom.js';\nexport {default as PinchRotate} from './interaction/PinchRotate.js';\nexport {default as PinchZoom} from './interaction/PinchZoom.js';\nexport {default as Pointer} from './interaction/Pointer.js';\nexport {default as Select} from './interaction/Select.js';\nexport {default as Snap} from './interaction/Snap.js';\nexport {default as Translate} from './interaction/Translate.js';\n\n\n/**\n * @typedef {Object} DefaultsOptions\n * @property {boolean} [altShiftDragRotate=true] Whether Alt-Shift-drag rotate is\n * desired.\n * @property {boolean} [onFocusOnly=false] Interact only when the map has the\n * focus. This affects the `MouseWheelZoom` and `DragPan` interactions and is\n * useful when page scroll is desired for maps that do not have the browser's\n * focus.\n * @property {boolean} [constrainResolution=false] Zoom to the closest integer\n * zoom level after the wheel/trackpad or pinch gesture ends.\n * @property {boolean} [doubleClickZoom=true] Whether double click zoom is\n * desired.\n * @property {boolean} [keyboard=true] Whether keyboard interaction is desired.\n * @property {boolean} [mouseWheelZoom=true] Whether mousewheel zoom is desired.\n * @property {boolean} [shiftDragZoom=true] Whether Shift-drag zoom is desired.\n * @property {boolean} [dragPan=true] Whether drag pan is desired.\n * @property {boolean} [pinchRotate=true] Whether pinch rotate is desired.\n * @property {boolean} [pinchZoom=true] Whether pinch zoom is desired.\n * @property {number} [zoomDelta] Zoom level delta when using keyboard or\n * mousewheel zoom.\n * @property {number} [zoomDuration] Duration of the zoom animation in\n * milliseconds.\n */\n\n\n/**\n * Set of interactions included in maps by default. Specific interactions can be\n * excluded by setting the appropriate option to false in the constructor\n * options, but the order of the interactions is fixed. If you want to specify\n * a different order for interactions, you will need to create your own\n * {@link module:ol/interaction/Interaction} instances and insert\n * them into a {@link module:ol/Collection} in the order you want\n * before creating your {@link module:ol/Map~Map} instance. The default set of\n * interactions, in sequence, is:\n * * {@link module:ol/interaction/DragRotate~DragRotate}\n * * {@link module:ol/interaction/DoubleClickZoom~DoubleClickZoom}\n * * {@link module:ol/interaction/DragPan~DragPan}\n * * {@link module:ol/interaction/PinchRotate~PinchRotate}\n * * {@link module:ol/interaction/PinchZoom~PinchZoom}\n * * {@link module:ol/interaction/KeyboardPan~KeyboardPan}\n * * {@link module:ol/interaction/KeyboardZoom~KeyboardZoom}\n * * {@link module:ol/interaction/MouseWheelZoom~MouseWheelZoom}\n * * {@link module:ol/interaction/DragZoom~DragZoom}\n *\n * @param {DefaultsOptions=} opt_options Defaults options.\n * @return {import(\"./Collection.js\").default<import(\"./interaction/Interaction.js\").default>}\n * A collection of interactions to be used with the {@link module:ol/Map~Map}\n * constructor's `interactions` option.\n * @api\n */\nexport function defaults(opt_options) {\n\n var options = opt_options ? opt_options : {};\n\n var interactions = new Collection();\n\n var kinetic = new Kinetic(-0.005, 0.05, 100);\n\n var altShiftDragRotate = options.altShiftDragRotate !== undefined ?\n options.altShiftDragRotate : true;\n if (altShiftDragRotate) {\n interactions.push(new DragRotate());\n }\n\n var doubleClickZoom = options.doubleClickZoom !== undefined ?\n options.doubleClickZoom : true;\n if (doubleClickZoom) {\n interactions.push(new DoubleClickZoom({\n delta: options.zoomDelta,\n duration: options.zoomDuration\n }));\n }\n\n var dragPan = options.dragPan !== undefined ? options.dragPan : true;\n if (dragPan) {\n interactions.push(new DragPan({\n condition: options.onFocusOnly ? focus : undefined,\n kinetic: kinetic\n }));\n }\n\n var pinchRotate = options.pinchRotate !== undefined ? options.pinchRotate :\n true;\n if (pinchRotate) {\n interactions.push(new PinchRotate());\n }\n\n var pinchZoom = options.pinchZoom !== undefined ? options.pinchZoom : true;\n if (pinchZoom) {\n interactions.push(new PinchZoom({\n constrainResolution: options.constrainResolution,\n duration: options.zoomDuration\n }));\n }\n\n var keyboard = options.keyboard !== undefined ? options.keyboard : true;\n if (keyboard) {\n interactions.push(new KeyboardPan());\n interactions.push(new KeyboardZoom({\n delta: options.zoomDelta,\n duration: options.zoomDuration\n }));\n }\n\n var mouseWheelZoom = options.mouseWheelZoom !== undefined ?\n options.mouseWheelZoom : true;\n if (mouseWheelZoom) {\n interactions.push(new MouseWheelZoom({\n condition: options.onFocusOnly ? focus : undefined,\n constrainResolution: options.constrainResolution,\n duration: options.zoomDuration\n }));\n }\n\n var shiftDragZoom = options.shiftDragZoom !== undefined ?\n options.shiftDragZoom : true;\n if (shiftDragZoom) {\n interactions.push(new DragZoom({\n duration: options.zoomDuration\n }));\n }\n\n return interactions;\n\n}\n\n//# sourceMappingURL=interaction.js.map","/**\n * @module ol/reproj/common\n */\n\n/**\n * Default maximum allowed threshold (in pixels) for reprojection\n * triangulation.\n * @type {number}\n */\nexport var ERROR_THRESHOLD = 0.5;\n\n/**\n * Enable automatic reprojection of raster sources. Default is `true`.\n * TODO: decide if we want to expose this as a build flag or remove it\n * @type {boolean}\n */\nexport var ENABLE_RASTER_REPROJECTION = true;\n\n//# sourceMappingURL=common.js.map","/**\n * @module ol/ImageBase\n */\nimport {abstract} from './util.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\n\n/**\n * @abstract\n */\nvar ImageBase = /*@__PURE__*/(function (EventTarget) {\n function ImageBase(extent, resolution, pixelRatio, state) {\n\n EventTarget.call(this);\n\n /**\n * @protected\n * @type {import(\"./extent.js\").Extent}\n */\n this.extent = extent;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelRatio_ = pixelRatio;\n\n /**\n * @protected\n * @type {number|undefined}\n */\n this.resolution = resolution;\n\n /**\n * @protected\n * @type {import(\"./ImageState.js\").default}\n */\n this.state = state;\n\n }\n\n if ( EventTarget ) ImageBase.__proto__ = EventTarget;\n ImageBase.prototype = Object.create( EventTarget && EventTarget.prototype );\n ImageBase.prototype.constructor = ImageBase;\n\n /**\n * @protected\n */\n ImageBase.prototype.changed = function changed () {\n this.dispatchEvent(EventType.CHANGE);\n };\n\n /**\n * @return {import(\"./extent.js\").Extent} Extent.\n */\n ImageBase.prototype.getExtent = function getExtent () {\n return this.extent;\n };\n\n /**\n * @abstract\n * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n */\n ImageBase.prototype.getImage = function getImage () {\n return abstract();\n };\n\n /**\n * @return {number} PixelRatio.\n */\n ImageBase.prototype.getPixelRatio = function getPixelRatio () {\n return this.pixelRatio_;\n };\n\n /**\n * @return {number} Resolution.\n */\n ImageBase.prototype.getResolution = function getResolution () {\n return /** @type {number} */ (this.resolution);\n };\n\n /**\n * @return {import(\"./ImageState.js\").default} State.\n */\n ImageBase.prototype.getState = function getState () {\n return this.state;\n };\n\n /**\n * Load not yet loaded URI.\n * @abstract\n */\n ImageBase.prototype.load = function load () {\n abstract();\n };\n\n return ImageBase;\n}(EventTarget));\n\n\nexport default ImageBase;\n\n//# sourceMappingURL=ImageBase.js.map","/**\n * @module ol/ImageState\n */\n\n/**\n * @enum {number}\n */\nexport default {\n IDLE: 0,\n LOADING: 1,\n LOADED: 2,\n ERROR: 3\n};\n\n//# sourceMappingURL=ImageState.js.map","/**\n * @module ol/ImageCanvas\n */\nimport ImageBase from './ImageBase.js';\nimport ImageState from './ImageState.js';\n\n\n/**\n * A function that is called to trigger asynchronous canvas drawing. It is\n * called with a \"done\" callback that should be called when drawing is done.\n * If any error occurs during drawing, the \"done\" callback should be called with\n * that error.\n *\n * @typedef {function(function(Error=))} Loader\n */\n\n\nvar ImageCanvas = /*@__PURE__*/(function (ImageBase) {\n function ImageCanvas(extent, resolution, pixelRatio, canvas, opt_loader) {\n\n var state = opt_loader !== undefined ? ImageState.IDLE : ImageState.LOADED;\n\n ImageBase.call(this, extent, resolution, pixelRatio, state);\n\n /**\n * Optional canvas loader function.\n * @type {?Loader}\n * @private\n */\n this.loader_ = opt_loader !== undefined ? opt_loader : null;\n\n /**\n * @private\n * @type {HTMLCanvasElement}\n */\n this.canvas_ = canvas;\n\n /**\n * @private\n * @type {Error}\n */\n this.error_ = null;\n\n }\n\n if ( ImageBase ) ImageCanvas.__proto__ = ImageBase;\n ImageCanvas.prototype = Object.create( ImageBase && ImageBase.prototype );\n ImageCanvas.prototype.constructor = ImageCanvas;\n\n /**\n * Get any error associated with asynchronous rendering.\n * @return {Error} Any error that occurred during rendering.\n */\n ImageCanvas.prototype.getError = function getError () {\n return this.error_;\n };\n\n /**\n * Handle async drawing complete.\n * @param {Error=} err Any error during drawing.\n * @private\n */\n ImageCanvas.prototype.handleLoad_ = function handleLoad_ (err) {\n if (err) {\n this.error_ = err;\n this.state = ImageState.ERROR;\n } else {\n this.state = ImageState.LOADED;\n }\n this.changed();\n };\n\n /**\n * @inheritDoc\n */\n ImageCanvas.prototype.load = function load () {\n if (this.state == ImageState.IDLE) {\n this.state = ImageState.LOADING;\n this.changed();\n this.loader_(this.handleLoad_.bind(this));\n }\n };\n\n /**\n * @return {HTMLCanvasElement} Canvas element.\n */\n ImageCanvas.prototype.getImage = function getImage () {\n return this.canvas_;\n };\n\n return ImageCanvas;\n}(ImageBase));\n\n\nexport default ImageCanvas;\n\n//# sourceMappingURL=ImageCanvas.js.map","/**\n * @module ol/LayerType\n */\n\n/**\n * A layer type used when creating layer renderers.\n * @enum {string}\n */\nexport default {\n IMAGE: 'IMAGE',\n TILE: 'TILE',\n VECTOR_TILE: 'VECTOR_TILE',\n VECTOR: 'VECTOR'\n};\n\n//# sourceMappingURL=LayerType.js.map","/**\n * @module ol/layer/VectorRenderType\n */\n\n/**\n * @enum {string}\n * Render mode for vector layers:\n * * `'image'`: Vector layers are rendered as images. Great performance, but\n * point symbols and texts are always rotated with the view and pixels are\n * scaled during zoom animations.\n * * `'vector'`: Vector layers are rendered as vectors. Most accurate rendering\n * even during animations, but slower performance.\n * @api\n */\nexport default {\n IMAGE: 'image',\n VECTOR: 'vector'\n};\n\n//# sourceMappingURL=VectorRenderType.js.map","/**\n * @module ol/render/Event\n */\n\nimport Event from '../events/Event.js';\n\nvar RenderEvent = /*@__PURE__*/(function (Event) {\n function RenderEvent(type, opt_vectorContext, opt_frameState, opt_context, opt_glContext) {\n\n Event.call(this, type);\n\n /**\n * For canvas, this is an instance of {@link module:ol/render/canvas/Immediate}.\n * @type {import(\"./VectorContext.js\").default|undefined}\n * @api\n */\n this.vectorContext = opt_vectorContext;\n\n /**\n * An object representing the current render frame state.\n * @type {import(\"../PluggableMap.js\").FrameState|undefined}\n * @api\n */\n this.frameState = opt_frameState;\n\n /**\n * Canvas context. Only available when a Canvas renderer is used, null\n * otherwise.\n * @type {CanvasRenderingContext2D|null|undefined}\n * @api\n */\n this.context = opt_context;\n\n /**\n * WebGL context. Only available when a WebGL renderer is used, null\n * otherwise.\n * @type {import(\"../webgl/Context.js\").default|null|undefined}\n * @api\n */\n this.glContext = opt_glContext;\n\n }\n\n if ( Event ) RenderEvent.__proto__ = Event;\n RenderEvent.prototype = Object.create( Event && Event.prototype );\n RenderEvent.prototype.constructor = RenderEvent;\n\n return RenderEvent;\n}(Event));\n\nexport default RenderEvent;\n\n//# sourceMappingURL=Event.js.map","/**\n * @module ol/structs/LRUCache\n */\n\nimport {assert} from '../asserts.js';\nimport EventTarget from '../events/Target.js';\nimport EventType from '../events/EventType.js';\n\n\n/**\n * @typedef {Object} Entry\n * @property {string} key_\n * @property {Object} newer\n * @property {Object} older\n * @property {*} value_\n */\n\n\n/**\n * @classdesc\n * Implements a Least-Recently-Used cache where the keys do not conflict with\n * Object's properties (e.g. 'hasOwnProperty' is not allowed as a key). Expiring\n * items from the cache is the responsibility of the user.\n *\n * @fires import(\"../events/Event.js\").Event\n * @template T\n */\nvar LRUCache = /*@__PURE__*/(function (EventTarget) {\n function LRUCache(opt_highWaterMark) {\n\n EventTarget.call(this);\n\n /**\n * @type {number}\n */\n this.highWaterMark = opt_highWaterMark !== undefined ? opt_highWaterMark : 2048;\n\n /**\n * @private\n * @type {number}\n */\n this.count_ = 0;\n\n /**\n * @private\n * @type {!Object<string, Entry>}\n */\n this.entries_ = {};\n\n /**\n * @private\n * @type {?Entry}\n */\n this.oldest_ = null;\n\n /**\n * @private\n * @type {?Entry}\n */\n this.newest_ = null;\n\n }\n\n if ( EventTarget ) LRUCache.__proto__ = EventTarget;\n LRUCache.prototype = Object.create( EventTarget && EventTarget.prototype );\n LRUCache.prototype.constructor = LRUCache;\n\n\n /**\n * @return {boolean} Can expire cache.\n */\n LRUCache.prototype.canExpireCache = function canExpireCache () {\n return this.getCount() > this.highWaterMark;\n };\n\n\n /**\n * FIXME empty description for jsdoc\n */\n LRUCache.prototype.clear = function clear () {\n this.count_ = 0;\n this.entries_ = {};\n this.oldest_ = null;\n this.newest_ = null;\n this.dispatchEvent(EventType.CLEAR);\n };\n\n\n /**\n * @param {string} key Key.\n * @return {boolean} Contains key.\n */\n LRUCache.prototype.containsKey = function containsKey (key) {\n return this.entries_.hasOwnProperty(key);\n };\n\n\n /**\n * @param {function(this: S, T, string, LRUCache): ?} f The function\n * to call for every entry from the oldest to the newer. This function takes\n * 3 arguments (the entry value, the entry key and the LRUCache object).\n * The return value is ignored.\n * @param {S=} opt_this The object to use as `this` in `f`.\n * @template S\n */\n LRUCache.prototype.forEach = function forEach (f, opt_this) {\n var entry = this.oldest_;\n while (entry) {\n f.call(opt_this, entry.value_, entry.key_, this);\n entry = entry.newer;\n }\n };\n\n\n /**\n * @param {string} key Key.\n * @return {T} Value.\n */\n LRUCache.prototype.get = function get (key) {\n var entry = this.entries_[key];\n assert(entry !== undefined,\n 15); // Tried to get a value for a key that does not exist in the cache\n if (entry === this.newest_) {\n return entry.value_;\n } else if (entry === this.oldest_) {\n this.oldest_ = /** @type {Entry} */ (this.oldest_.newer);\n this.oldest_.older = null;\n } else {\n entry.newer.older = entry.older;\n entry.older.newer = entry.newer;\n }\n entry.newer = null;\n entry.older = this.newest_;\n this.newest_.newer = entry;\n this.newest_ = entry;\n return entry.value_;\n };\n\n\n /**\n * Remove an entry from the cache.\n * @param {string} key The entry key.\n * @return {T} The removed entry.\n */\n LRUCache.prototype.remove = function remove (key) {\n var entry = this.entries_[key];\n assert(entry !== undefined, 15); // Tried to get a value for a key that does not exist in the cache\n if (entry === this.newest_) {\n this.newest_ = /** @type {Entry} */ (entry.older);\n if (this.newest_) {\n this.newest_.newer = null;\n }\n } else if (entry === this.oldest_) {\n this.oldest_ = /** @type {Entry} */ (entry.newer);\n if (this.oldest_) {\n this.oldest_.older = null;\n }\n } else {\n entry.newer.older = entry.older;\n entry.older.newer = entry.newer;\n }\n delete this.entries_[key];\n --this.count_;\n return entry.value_;\n };\n\n\n /**\n * @return {number} Count.\n */\n LRUCache.prototype.getCount = function getCount () {\n return this.count_;\n };\n\n\n /**\n * @return {Array<string>} Keys.\n */\n LRUCache.prototype.getKeys = function getKeys () {\n var keys = new Array(this.count_);\n var i = 0;\n var entry;\n for (entry = this.newest_; entry; entry = entry.older) {\n keys[i++] = entry.key_;\n }\n return keys;\n };\n\n\n /**\n * @return {Array<T>} Values.\n */\n LRUCache.prototype.getValues = function getValues () {\n var values = new Array(this.count_);\n var i = 0;\n var entry;\n for (entry = this.newest_; entry; entry = entry.older) {\n values[i++] = entry.value_;\n }\n return values;\n };\n\n\n /**\n * @return {T} Last value.\n */\n LRUCache.prototype.peekLast = function peekLast () {\n return this.oldest_.value_;\n };\n\n\n /**\n * @return {string} Last key.\n */\n LRUCache.prototype.peekLastKey = function peekLastKey () {\n return this.oldest_.key_;\n };\n\n\n /**\n * Get the key of the newest item in the cache. Throws if the cache is empty.\n * @return {string} The newest key.\n */\n LRUCache.prototype.peekFirstKey = function peekFirstKey () {\n return this.newest_.key_;\n };\n\n\n /**\n * @return {T} value Value.\n */\n LRUCache.prototype.pop = function pop () {\n var entry = this.oldest_;\n delete this.entries_[entry.key_];\n if (entry.newer) {\n entry.newer.older = null;\n }\n this.oldest_ = /** @type {Entry} */ (entry.newer);\n if (!this.oldest_) {\n this.newest_ = null;\n }\n --this.count_;\n return entry.value_;\n };\n\n\n /**\n * @param {string} key Key.\n * @param {T} value Value.\n */\n LRUCache.prototype.replace = function replace (key, value) {\n this.get(key); // update `newest_`\n this.entries_[key].value_ = value;\n };\n\n\n /**\n * @param {string} key Key.\n * @param {T} value Value.\n */\n LRUCache.prototype.set = function set (key, value) {\n assert(!(key in this.entries_),\n 16); // Tried to set a value for a key that is used already\n var entry = /** @type {Entry} */ ({\n key_: key,\n newer: null,\n older: this.newest_,\n value_: value\n });\n if (!this.newest_) {\n this.oldest_ = entry;\n } else {\n this.newest_.newer = entry;\n }\n this.newest_ = entry;\n this.entries_[key] = entry;\n ++this.count_;\n };\n\n\n /**\n * Set a maximum number of entries for the cache.\n * @param {number} size Cache size.\n * @api\n */\n LRUCache.prototype.setSize = function setSize (size) {\n this.highWaterMark = size;\n };\n\n\n /**\n * Prune the cache.\n */\n LRUCache.prototype.prune = function prune () {\n while (this.canExpireCache()) {\n this.pop();\n }\n };\n\n return LRUCache;\n}(EventTarget));\n\nexport default LRUCache;\n\n//# sourceMappingURL=LRUCache.js.map","/**\n * @module ol/render/canvas\n */\nimport {getFontFamilies} from '../css.js';\nimport {createCanvasContext2D} from '../dom.js';\nimport {clear} from '../obj.js';\nimport LRUCache from '../structs/LRUCache.js';\nimport {create as createTransform} from '../transform.js';\n\n\n/**\n * @typedef {Object} FillState\n * @property {import(\"../colorlike.js\").ColorLike} fillStyle\n */\n\n\n/**\n * @typedef {Object} FillStrokeState\n * @property {import(\"../colorlike.js\").ColorLike} [currentFillStyle]\n * @property {import(\"../colorlike.js\").ColorLike} [currentStrokeStyle]\n * @property {string} [currentLineCap]\n * @property {Array<number>} currentLineDash\n * @property {number} [currentLineDashOffset]\n * @property {string} [currentLineJoin]\n * @property {number} [currentLineWidth]\n * @property {number} [currentMiterLimit]\n * @property {number} [lastStroke]\n * @property {import(\"../colorlike.js\").ColorLike} [fillStyle]\n * @property {import(\"../colorlike.js\").ColorLike} [strokeStyle]\n * @property {string} [lineCap]\n * @property {Array<number>} lineDash\n * @property {number} [lineDashOffset]\n * @property {string} [lineJoin]\n * @property {number} [lineWidth]\n * @property {number} [miterLimit]\n */\n\n\n/**\n * @typedef {Object} StrokeState\n * @property {string} lineCap\n * @property {Array<number>} lineDash\n * @property {number} lineDashOffset\n * @property {string} lineJoin\n * @property {number} lineWidth\n * @property {number} miterLimit\n * @property {import(\"../colorlike.js\").ColorLike} strokeStyle\n */\n\n\n/**\n * @typedef {Object} TextState\n * @property {string} font\n * @property {string} [textAlign]\n * @property {string} textBaseline\n * @property {string} [placement]\n * @property {number} [maxAngle]\n * @property {boolean} [overflow]\n * @property {import(\"../style/Fill.js\").default} [backgroundFill]\n * @property {import(\"../style/Stroke.js\").default} [backgroundStroke]\n * @property {number} [scale]\n * @property {Array<number>} [padding]\n */\n\n\n/**\n * Container for decluttered replay instructions that need to be rendered or\n * omitted together, i.e. when styles render both an image and text, or for the\n * characters that form text along lines. The basic elements of this array are\n * `[minX, minY, maxX, maxY, count]`, where the first four entries are the\n * rendered extent of the group in pixel space. `count` is the number of styles\n * in the group, i.e. 2 when an image and a text are grouped, or 1 otherwise.\n * In addition to these four elements, declutter instruction arrays (i.e. the\n * arguments to {@link module:ol/render/canvas~drawImage} are appended to the array.\n * @typedef {Array<*>} DeclutterGroup\n */\n\n\n/**\n * @const\n * @type {string}\n */\nexport var defaultFont = '10px sans-serif';\n\n\n/**\n * @const\n * @type {import(\"../color.js\").Color}\n */\nexport var defaultFillStyle = [0, 0, 0, 1];\n\n\n/**\n * @const\n * @type {string}\n */\nexport var defaultLineCap = 'round';\n\n\n/**\n * @const\n * @type {Array<number>}\n */\nexport var defaultLineDash = [];\n\n\n/**\n * @const\n * @type {number}\n */\nexport var defaultLineDashOffset = 0;\n\n\n/**\n * @const\n * @type {string}\n */\nexport var defaultLineJoin = 'round';\n\n\n/**\n * @const\n * @type {number}\n */\nexport var defaultMiterLimit = 10;\n\n\n/**\n * @const\n * @type {import(\"../color.js\").Color}\n */\nexport var defaultStrokeStyle = [0, 0, 0, 1];\n\n\n/**\n * @const\n * @type {string}\n */\nexport var defaultTextAlign = 'center';\n\n\n/**\n * @const\n * @type {string}\n */\nexport var defaultTextBaseline = 'middle';\n\n\n/**\n * @const\n * @type {Array<number>}\n */\nexport var defaultPadding = [0, 0, 0, 0];\n\n\n/**\n * @const\n * @type {number}\n */\nexport var defaultLineWidth = 1;\n\n\n/**\n * The label cache for text rendering. To change the default cache size of 2048\n * entries, use {@link module:ol/structs/LRUCache#setSize}.\n * @type {LRUCache<HTMLCanvasElement>}\n * @api\n */\nexport var labelCache = new LRUCache();\n\n\n/**\n * @type {!Object<string, number>}\n */\nexport var checkedFonts = {};\n\n\n/**\n * @type {CanvasRenderingContext2D}\n */\nvar measureContext = null;\n\n\n/**\n * @type {!Object<string, number>}\n */\nexport var textHeights = {};\n\n\n/**\n * Clears the label cache when a font becomes available.\n * @param {string} fontSpec CSS font spec.\n */\nexport var checkFont = (function() {\n var retries = 60;\n var checked = checkedFonts;\n var size = '32px ';\n var referenceFonts = ['monospace', 'serif'];\n var len = referenceFonts.length;\n var text = 'wmytzilWMYTZIL@#/&?$%10\\uF013';\n var interval, referenceWidth;\n\n function isAvailable(font) {\n var context = getMeasureContext();\n // Check weight ranges according to\n // https://developer.mozilla.org/en-US/docs/Web/CSS/font-weight#Fallback_weights\n for (var weight = 100; weight <= 700; weight += 300) {\n var fontWeight = weight + ' ';\n var available = true;\n for (var i = 0; i < len; ++i) {\n var referenceFont = referenceFonts[i];\n context.font = fontWeight + size + referenceFont;\n referenceWidth = context.measureText(text).width;\n if (font != referenceFont) {\n context.font = fontWeight + size + font + ',' + referenceFont;\n var width = context.measureText(text).width;\n // If width and referenceWidth are the same, then the fallback was used\n // instead of the font we wanted, so the font is not available.\n available = available && width != referenceWidth;\n }\n }\n if (available) {\n // Consider font available when it is available in one weight range.\n //FIXME With this we miss rare corner cases, so we should consider\n //FIXME checking availability for each requested weight range.\n return true;\n }\n }\n return false;\n }\n\n function check() {\n var done = true;\n for (var font in checked) {\n if (checked[font] < retries) {\n if (isAvailable(font)) {\n checked[font] = retries;\n clear(textHeights);\n // Make sure that loaded fonts are picked up by Safari\n measureContext = null;\n labelCache.clear();\n } else {\n ++checked[font];\n done = false;\n }\n }\n }\n if (done) {\n clearInterval(interval);\n interval = undefined;\n }\n }\n\n return function(fontSpec) {\n var fontFamilies = getFontFamilies(fontSpec);\n if (!fontFamilies) {\n return;\n }\n for (var i = 0, ii = fontFamilies.length; i < ii; ++i) {\n var fontFamily = fontFamilies[i];\n if (!(fontFamily in checked)) {\n checked[fontFamily] = retries;\n if (!isAvailable(fontFamily)) {\n checked[fontFamily] = 0;\n if (interval === undefined) {\n interval = setInterval(check, 32);\n }\n }\n }\n }\n };\n})();\n\n\n/**\n * @return {CanvasRenderingContext2D} Measure context.\n */\nfunction getMeasureContext() {\n if (!measureContext) {\n measureContext = createCanvasContext2D(1, 1);\n }\n return measureContext;\n}\n\n\n/**\n * @param {string} font Font to use for measuring.\n * @return {import(\"../size.js\").Size} Measurement.\n */\nexport var measureTextHeight = (function() {\n var span;\n var heights = textHeights;\n return function(font) {\n var height = heights[font];\n if (height == undefined) {\n if (!span) {\n span = document.createElement('span');\n span.textContent = 'M';\n span.style.margin = span.style.padding = '0 !important';\n span.style.position = 'absolute !important';\n span.style.left = '-99999px !important';\n }\n span.style.font = font;\n document.body.appendChild(span);\n height = heights[font] = span.offsetHeight;\n document.body.removeChild(span);\n }\n return height;\n };\n})();\n\n\n/**\n * @param {string} font Font.\n * @param {string} text Text.\n * @return {number} Width.\n */\nexport function measureTextWidth(font, text) {\n var measureContext = getMeasureContext();\n if (font != measureContext.font) {\n measureContext.font = font;\n }\n return measureContext.measureText(text).width;\n}\n\n\n/**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {number} rotation Rotation.\n * @param {number} offsetX X offset.\n * @param {number} offsetY Y offset.\n */\nexport function rotateAtOffset(context, rotation, offsetX, offsetY) {\n if (rotation !== 0) {\n context.translate(offsetX, offsetY);\n context.rotate(rotation);\n context.translate(-offsetX, -offsetY);\n }\n}\n\n\nexport var resetTransform = createTransform();\n\n\n/**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../transform.js\").Transform|null} transform Transform.\n * @param {number} opacity Opacity.\n * @param {HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} image Image.\n * @param {number} originX Origin X.\n * @param {number} originY Origin Y.\n * @param {number} w Width.\n * @param {number} h Height.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {number} scale Scale.\n */\nexport function drawImage(context,\n transform, opacity, image, originX, originY, w, h, x, y, scale) {\n var alpha;\n if (opacity != 1) {\n alpha = context.globalAlpha;\n context.globalAlpha = alpha * opacity;\n }\n if (transform) {\n context.setTransform.apply(context, transform);\n }\n\n context.drawImage(image, originX, originY, w, h, x, y, w * scale, h * scale);\n\n if (alpha) {\n context.globalAlpha = alpha;\n }\n if (transform) {\n context.setTransform.apply(context, resetTransform);\n }\n}\n\n//# sourceMappingURL=canvas.js.map","/**\n * @module ol/color\n */\nimport {assert} from './asserts.js';\nimport {clamp} from './math.js';\n\n\n/**\n * A color represented as a short array [red, green, blue, alpha].\n * red, green, and blue should be integers in the range 0..255 inclusive.\n * alpha should be a float in the range 0..1 inclusive. If no alpha value is\n * given then `1` will be used.\n * @typedef {Array<number>} Color\n * @api\n */\n\n\n/**\n * This RegExp matches # followed by 3, 4, 6, or 8 hex digits.\n * @const\n * @type {RegExp}\n * @private\n */\nvar HEX_COLOR_RE_ = /^#([a-f0-9]{3}|[a-f0-9]{4}(?:[a-f0-9]{2}){0,2})$/i;\n\n\n/**\n * Regular expression for matching potential named color style strings.\n * @const\n * @type {RegExp}\n * @private\n */\nvar NAMED_COLOR_RE_ = /^([a-z]*)$/i;\n\n\n/**\n * Return the color as an rgba string.\n * @param {Color|string} color Color.\n * @return {string} Rgba string.\n * @api\n */\nexport function asString(color) {\n if (typeof color === 'string') {\n return color;\n } else {\n return toString(color);\n }\n}\n\n/**\n * Return named color as an rgba string.\n * @param {string} color Named color.\n * @return {string} Rgb string.\n */\nfunction fromNamed(color) {\n var el = document.createElement('div');\n el.style.color = color;\n if (el.style.color !== '') {\n document.body.appendChild(el);\n var rgb = getComputedStyle(el).color;\n document.body.removeChild(el);\n return rgb;\n } else {\n return '';\n }\n}\n\n\n/**\n * @param {string} s String.\n * @return {Color} Color.\n */\nexport var fromString = (\n function() {\n\n // We maintain a small cache of parsed strings. To provide cheap LRU-like\n // semantics, whenever the cache grows too large we simply delete an\n // arbitrary 25% of the entries.\n\n /**\n * @const\n * @type {number}\n */\n var MAX_CACHE_SIZE = 1024;\n\n /**\n * @type {Object<string, Color>}\n */\n var cache = {};\n\n /**\n * @type {number}\n */\n var cacheSize = 0;\n\n return (\n /**\n * @param {string} s String.\n * @return {Color} Color.\n */\n function(s) {\n var color;\n if (cache.hasOwnProperty(s)) {\n color = cache[s];\n } else {\n if (cacheSize >= MAX_CACHE_SIZE) {\n var i = 0;\n for (var key in cache) {\n if ((i++ & 3) === 0) {\n delete cache[key];\n --cacheSize;\n }\n }\n }\n color = fromStringInternal_(s);\n cache[s] = color;\n ++cacheSize;\n }\n return color;\n }\n );\n\n })();\n\n/**\n * Return the color as an array. This function maintains a cache of calculated\n * arrays which means the result should not be modified.\n * @param {Color|string} color Color.\n * @return {Color} Color.\n * @api\n */\nexport function asArray(color) {\n if (Array.isArray(color)) {\n return color;\n } else {\n return fromString(color);\n }\n}\n\n/**\n * @param {string} s String.\n * @private\n * @return {Color} Color.\n */\nfunction fromStringInternal_(s) {\n var r, g, b, a, color;\n\n if (NAMED_COLOR_RE_.exec(s)) {\n s = fromNamed(s);\n }\n\n if (HEX_COLOR_RE_.exec(s)) { // hex\n var n = s.length - 1; // number of hex digits\n var d; // number of digits per channel\n if (n <= 4) {\n d = 1;\n } else {\n d = 2;\n }\n var hasAlpha = n === 4 || n === 8;\n r = parseInt(s.substr(1 + 0 * d, d), 16);\n g = parseInt(s.substr(1 + 1 * d, d), 16);\n b = parseInt(s.substr(1 + 2 * d, d), 16);\n if (hasAlpha) {\n a = parseInt(s.substr(1 + 3 * d, d), 16);\n } else {\n a = 255;\n }\n if (d == 1) {\n r = (r << 4) + r;\n g = (g << 4) + g;\n b = (b << 4) + b;\n if (hasAlpha) {\n a = (a << 4) + a;\n }\n }\n color = [r, g, b, a / 255];\n } else if (s.indexOf('rgba(') == 0) { // rgba()\n color = s.slice(5, -1).split(',').map(Number);\n normalize(color);\n } else if (s.indexOf('rgb(') == 0) { // rgb()\n color = s.slice(4, -1).split(',').map(Number);\n color.push(1);\n normalize(color);\n } else {\n assert(false, 14); // Invalid color\n }\n return color;\n}\n\n\n/**\n * TODO this function is only used in the test, we probably shouldn't export it\n * @param {Color} color Color.\n * @return {Color} Clamped color.\n */\nexport function normalize(color) {\n color[0] = clamp((color[0] + 0.5) | 0, 0, 255);\n color[1] = clamp((color[1] + 0.5) | 0, 0, 255);\n color[2] = clamp((color[2] + 0.5) | 0, 0, 255);\n color[3] = clamp(color[3], 0, 1);\n return color;\n}\n\n\n/**\n * @param {Color} color Color.\n * @return {string} String.\n */\nexport function toString(color) {\n var r = color[0];\n if (r != (r | 0)) {\n r = (r + 0.5) | 0;\n }\n var g = color[1];\n if (g != (g | 0)) {\n g = (g + 0.5) | 0;\n }\n var b = color[2];\n if (b != (b | 0)) {\n b = (b + 0.5) | 0;\n }\n var a = color[3] === undefined ? 1 : color[3];\n return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';\n}\n\n//# sourceMappingURL=color.js.map","/**\n * @module ol/colorlike\n */\nimport {toString} from './color.js';\n\n\n/**\n * A type accepted by CanvasRenderingContext2D.fillStyle\n * or CanvasRenderingContext2D.strokeStyle.\n * Represents a color, pattern, or gradient. The origin for patterns and\n * gradients as fill style is an increment of 512 css pixels from map coordinate\n * `[0, 0]`. For seamless repeat patterns, width and height of the pattern image\n * must be a factor of two (2, 4, 8, ..., 512).\n *\n * @typedef {string|CanvasPattern|CanvasGradient} ColorLike\n * @api\n */\n\n\n/**\n * @param {import(\"./color.js\").Color|ColorLike} color Color.\n * @return {ColorLike} The color as an {@link ol/colorlike~ColorLike}.\n * @api\n */\nexport function asColorLike(color) {\n if (Array.isArray(color)) {\n return toString(color);\n } else {\n return color;\n }\n}\n\n//# sourceMappingURL=colorlike.js.map","/**\n * @module ol/render/VectorContext\n */\n\n/**\n * @classdesc\n * Context for drawing geometries. A vector context is available on render\n * events and does not need to be constructed directly.\n * @api\n */\nvar VectorContext = function VectorContext () {};\n\nVectorContext.prototype.drawCustom = function drawCustom (geometry, feature, renderer) {};\n\n/**\n * Render a geometry.\n *\n * @param {import(\"../geom/Geometry.js\").default} geometry The geometry to render.\n */\nVectorContext.prototype.drawGeometry = function drawGeometry (geometry) {};\n\n/**\n * Set the rendering style.\n *\n * @param {import(\"../style/Style.js\").default} style The rendering style.\n */\nVectorContext.prototype.setStyle = function setStyle (style) {};\n\n/**\n * @param {import(\"../geom/Circle.js\").default} circleGeometry Circle geometry.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawCircle = function drawCircle (circleGeometry, feature) {};\n\n/**\n * @param {import(\"../Feature.js\").default} feature Feature.\n * @param {import(\"../style/Style.js\").default} style Style.\n */\nVectorContext.prototype.drawFeature = function drawFeature (feature, style) {};\n\n/**\n * @param {import(\"../geom/GeometryCollection.js\").default} geometryCollectionGeometry Geometry collection.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawGeometryCollection = function drawGeometryCollection (geometryCollectionGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/LineString.js\").default|import(\"./Feature.js\").default} lineStringGeometry Line string geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawLineString = function drawLineString (lineStringGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/MultiLineString.js\").default|import(\"./Feature.js\").default} multiLineStringGeometry MultiLineString geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawMultiLineString = function drawMultiLineString (multiLineStringGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/MultiPoint.js\").default|import(\"./Feature.js\").default} multiPointGeometry MultiPoint geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawMultiPoint = function drawMultiPoint (multiPointGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/MultiPolygon.js\").default} multiPolygonGeometry MultiPolygon geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawMultiPolygon = function drawMultiPolygon (multiPolygonGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/Point.js\").default|import(\"./Feature.js\").default} pointGeometry Point geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawPoint = function drawPoint (pointGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/Polygon.js\").default|import(\"./Feature.js\").default} polygonGeometry Polygon geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawPolygon = function drawPolygon (polygonGeometry, feature) {};\n\n/**\n * @param {import(\"../geom/Geometry.js\").default|import(\"./Feature.js\").default} geometry Geometry.\n * @param {import(\"../Feature.js\").default|import(\"./Feature.js\").default} feature Feature.\n */\nVectorContext.prototype.drawText = function drawText (geometry, feature) {};\n\n/**\n * @param {import(\"../style/Fill.js\").default} fillStyle Fill style.\n * @param {import(\"../style/Stroke.js\").default} strokeStyle Stroke style.\n */\nVectorContext.prototype.setFillStrokeStyle = function setFillStrokeStyle (fillStyle, strokeStyle) {};\n\n/**\n * @param {import(\"../style/Image.js\").default} imageStyle Image style.\n * @param {import(\"./canvas.js\").DeclutterGroup=} opt_declutterGroup Declutter.\n */\nVectorContext.prototype.setImageStyle = function setImageStyle (imageStyle, opt_declutterGroup) {};\n\n/**\n * @param {import(\"../style/Text.js\").default} textStyle Text style.\n * @param {import(\"./canvas.js\").DeclutterGroup=} opt_declutterGroup Declutter.\n */\nVectorContext.prototype.setTextStyle = function setTextStyle (textStyle, opt_declutterGroup) {};\n\nexport default VectorContext;\n\n//# sourceMappingURL=VectorContext.js.map","/**\n * @module ol/render/canvas/Immediate\n */\n// FIXME test, especially polygons with holes and multipolygons\n// FIXME need to handle large thick features (where pixel size matters)\n// FIXME add offset and end to ol/geom/flat/transform~transform2D?\n\nimport {equals} from '../../array.js';\nimport {asColorLike} from '../../colorlike.js';\nimport {intersects} from '../../extent.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport {transformGeom2D} from '../../geom/SimpleGeometry.js';\nimport {transform2D} from '../../geom/flat/transform.js';\nimport {CANVAS_LINE_DASH} from '../../has.js';\nimport VectorContext from '../VectorContext.js';\nimport {defaultTextAlign, defaultFillStyle, defaultLineCap, defaultLineDash, defaultLineDashOffset, defaultLineJoin, defaultLineWidth, defaultMiterLimit, defaultStrokeStyle, defaultTextBaseline, defaultFont} from '../canvas.js';\nimport {create as createTransform, compose as composeTransform} from '../../transform.js';\n\n/**\n * @classdesc\n * A concrete subclass of {@link module:ol/render/VectorContext} that implements\n * direct rendering of features and geometries to an HTML5 Canvas context.\n * Instances of this class are created internally by the library and\n * provided to application code as vectorContext member of the\n * {@link module:ol/render/Event~RenderEvent} object associated with postcompose, precompose and\n * render events emitted by layers and maps.\n */\nvar CanvasImmediateRenderer = /*@__PURE__*/(function (VectorContext) {\n function CanvasImmediateRenderer(context, pixelRatio, extent, transform, viewRotation) {\n VectorContext.call(this);\n\n /**\n * @private\n * @type {CanvasRenderingContext2D}\n */\n this.context_ = context;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelRatio_ = pixelRatio;\n\n /**\n * @private\n * @type {import(\"../../extent.js\").Extent}\n */\n this.extent_ = extent;\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.transform_ = transform;\n\n /**\n * @private\n * @type {number}\n */\n this.viewRotation_ = viewRotation;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").FillState}\n */\n this.contextFillState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").StrokeState}\n */\n this.contextStrokeState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").TextState}\n */\n this.contextTextState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").FillState}\n */\n this.fillState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").StrokeState}\n */\n this.strokeState_ = null;\n\n /**\n * @private\n * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n */\n this.image_ = null;\n\n /**\n * @private\n * @type {number}\n */\n this.imageAnchorX_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageAnchorY_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageHeight_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageOpacity_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageOriginX_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageOriginY_ = 0;\n\n /**\n * @private\n * @type {boolean}\n */\n this.imageRotateWithView_ = false;\n\n /**\n * @private\n * @type {number}\n */\n this.imageRotation_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageScale_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.imageWidth_ = 0;\n\n /**\n * @private\n * @type {string}\n */\n this.text_ = '';\n\n /**\n * @private\n * @type {number}\n */\n this.textOffsetX_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.textOffsetY_ = 0;\n\n /**\n * @private\n * @type {boolean}\n */\n this.textRotateWithView_ = false;\n\n /**\n * @private\n * @type {number}\n */\n this.textRotation_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.textScale_ = 0;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").FillState}\n */\n this.textFillState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").StrokeState}\n */\n this.textStrokeState_ = null;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").TextState}\n */\n this.textState_ = null;\n\n /**\n * @private\n * @type {Array<number>}\n */\n this.pixelCoordinates_ = [];\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.tmpLocalTransform_ = createTransform();\n\n }\n\n if ( VectorContext ) CanvasImmediateRenderer.__proto__ = VectorContext;\n CanvasImmediateRenderer.prototype = Object.create( VectorContext && VectorContext.prototype );\n CanvasImmediateRenderer.prototype.constructor = CanvasImmediateRenderer;\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @private\n */\n CanvasImmediateRenderer.prototype.drawImages_ = function drawImages_ (flatCoordinates, offset, end, stride) {\n if (!this.image_) {\n return;\n }\n var pixelCoordinates = transform2D(\n flatCoordinates, offset, end, 2, this.transform_,\n this.pixelCoordinates_);\n var context = this.context_;\n var localTransform = this.tmpLocalTransform_;\n var alpha = context.globalAlpha;\n if (this.imageOpacity_ != 1) {\n context.globalAlpha = alpha * this.imageOpacity_;\n }\n var rotation = this.imageRotation_;\n if (this.imageRotateWithView_) {\n rotation += this.viewRotation_;\n }\n for (var i = 0, ii = pixelCoordinates.length; i < ii; i += 2) {\n var x = pixelCoordinates[i] - this.imageAnchorX_;\n var y = pixelCoordinates[i + 1] - this.imageAnchorY_;\n if (rotation !== 0 || this.imageScale_ != 1) {\n var centerX = x + this.imageAnchorX_;\n var centerY = y + this.imageAnchorY_;\n composeTransform(localTransform,\n centerX, centerY,\n this.imageScale_, this.imageScale_,\n rotation,\n -centerX, -centerY);\n context.setTransform.apply(context, localTransform);\n }\n context.drawImage(this.image_, this.imageOriginX_, this.imageOriginY_,\n this.imageWidth_, this.imageHeight_, x, y,\n this.imageWidth_, this.imageHeight_);\n }\n if (rotation !== 0 || this.imageScale_ != 1) {\n context.setTransform(1, 0, 0, 1, 0, 0);\n }\n if (this.imageOpacity_ != 1) {\n context.globalAlpha = alpha;\n }\n };\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @private\n */\n CanvasImmediateRenderer.prototype.drawText_ = function drawText_ (flatCoordinates, offset, end, stride) {\n if (!this.textState_ || this.text_ === '') {\n return;\n }\n if (this.textFillState_) {\n this.setContextFillState_(this.textFillState_);\n }\n if (this.textStrokeState_) {\n this.setContextStrokeState_(this.textStrokeState_);\n }\n this.setContextTextState_(this.textState_);\n var pixelCoordinates = transform2D(\n flatCoordinates, offset, end, stride, this.transform_,\n this.pixelCoordinates_);\n var context = this.context_;\n var rotation = this.textRotation_;\n if (this.textRotateWithView_) {\n rotation += this.viewRotation_;\n }\n for (; offset < end; offset += stride) {\n var x = pixelCoordinates[offset] + this.textOffsetX_;\n var y = pixelCoordinates[offset + 1] + this.textOffsetY_;\n if (rotation !== 0 || this.textScale_ != 1) {\n var localTransform = composeTransform(this.tmpLocalTransform_,\n x, y,\n this.textScale_, this.textScale_,\n rotation,\n -x, -y);\n context.setTransform.apply(context, localTransform);\n }\n if (this.textStrokeState_) {\n context.strokeText(this.text_, x, y);\n }\n if (this.textFillState_) {\n context.fillText(this.text_, x, y);\n }\n }\n if (rotation !== 0 || this.textScale_ != 1) {\n context.setTransform(1, 0, 0, 1, 0, 0);\n }\n };\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {boolean} close Close.\n * @private\n * @return {number} end End.\n */\n CanvasImmediateRenderer.prototype.moveToLineTo_ = function moveToLineTo_ (flatCoordinates, offset, end, stride, close) {\n var context = this.context_;\n var pixelCoordinates = transform2D(\n flatCoordinates, offset, end, stride, this.transform_,\n this.pixelCoordinates_);\n context.moveTo(pixelCoordinates[0], pixelCoordinates[1]);\n var length = pixelCoordinates.length;\n if (close) {\n length -= 2;\n }\n for (var i = 2; i < length; i += 2) {\n context.lineTo(pixelCoordinates[i], pixelCoordinates[i + 1]);\n }\n if (close) {\n context.closePath();\n }\n return end;\n };\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @private\n * @return {number} End.\n */\n CanvasImmediateRenderer.prototype.drawRings_ = function drawRings_ (flatCoordinates, offset, ends, stride) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, true);\n }\n return offset;\n };\n\n /**\n * Render a circle geometry into the canvas. Rendering is immediate and uses\n * the current fill and stroke styles.\n *\n * @param {import(\"../../geom/Circle.js\").default} geometry Circle geometry.\n * @override\n * @api\n */\n CanvasImmediateRenderer.prototype.drawCircle = function drawCircle (geometry) {\n if (!intersects(this.extent_, geometry.getExtent())) {\n return;\n }\n if (this.fillState_ || this.strokeState_) {\n if (this.fillState_) {\n this.setContextFillState_(this.fillState_);\n }\n if (this.strokeState_) {\n this.setContextStrokeState_(this.strokeState_);\n }\n var pixelCoordinates = transformGeom2D(\n geometry, this.transform_, this.pixelCoordinates_);\n var dx = pixelCoordinates[2] - pixelCoordinates[0];\n var dy = pixelCoordinates[3] - pixelCoordinates[1];\n var radius = Math.sqrt(dx * dx + dy * dy);\n var context = this.context_;\n context.beginPath();\n context.arc(\n pixelCoordinates[0], pixelCoordinates[1], radius, 0, 2 * Math.PI);\n if (this.fillState_) {\n context.fill();\n }\n if (this.strokeState_) {\n context.stroke();\n }\n }\n if (this.text_ !== '') {\n this.drawText_(geometry.getCenter(), 0, 2, 2);\n }\n };\n\n /**\n * Set the rendering style. Note that since this is an immediate rendering API,\n * any `zIndex` on the provided style will be ignored.\n *\n * @param {import(\"../../style/Style.js\").default} style The rendering style.\n * @override\n * @api\n */\n CanvasImmediateRenderer.prototype.setStyle = function setStyle (style) {\n this.setFillStrokeStyle(style.getFill(), style.getStroke());\n this.setImageStyle(style.getImage());\n this.setTextStyle(style.getText());\n };\n\n /**\n * Render a geometry into the canvas. Call\n * {@link module:ol/render/canvas/Immediate#setStyle} first to set the rendering style.\n *\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry The geometry to render.\n * @override\n * @api\n */\n CanvasImmediateRenderer.prototype.drawGeometry = function drawGeometry (geometry) {\n var type = geometry.getType();\n switch (type) {\n case GeometryType.POINT:\n this.drawPoint(/** @type {import(\"../../geom/Point.js\").default} */ (geometry));\n break;\n case GeometryType.LINE_STRING:\n this.drawLineString(/** @type {import(\"../../geom/LineString.js\").default} */ (geometry));\n break;\n case GeometryType.POLYGON:\n this.drawPolygon(/** @type {import(\"../../geom/Polygon.js\").default} */ (geometry));\n break;\n case GeometryType.MULTI_POINT:\n this.drawMultiPoint(/** @type {import(\"../../geom/MultiPoint.js\").default} */ (geometry));\n break;\n case GeometryType.MULTI_LINE_STRING:\n this.drawMultiLineString(/** @type {import(\"../../geom/MultiLineString.js\").default} */ (geometry));\n break;\n case GeometryType.MULTI_POLYGON:\n this.drawMultiPolygon(/** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry));\n break;\n case GeometryType.GEOMETRY_COLLECTION:\n this.drawGeometryCollection(/** @type {import(\"../../geom/GeometryCollection.js\").default} */ (geometry));\n break;\n case GeometryType.CIRCLE:\n this.drawCircle(/** @type {import(\"../../geom/Circle.js\").default} */ (geometry));\n break;\n default:\n }\n };\n\n /**\n * Render a feature into the canvas. Note that any `zIndex` on the provided\n * style will be ignored - features are rendered immediately in the order that\n * this method is called. If you need `zIndex` support, you should be using an\n * {@link module:ol/layer/Vector~VectorLayer} instead.\n *\n * @param {import(\"../../Feature.js\").default} feature Feature.\n * @param {import(\"../../style/Style.js\").default} style Style.\n * @override\n * @api\n */\n CanvasImmediateRenderer.prototype.drawFeature = function drawFeature (feature, style) {\n var geometry = style.getGeometryFunction()(feature);\n if (!geometry || !intersects(this.extent_, geometry.getExtent())) {\n return;\n }\n this.setStyle(style);\n this.drawGeometry(geometry);\n };\n\n /**\n * Render a GeometryCollection to the canvas. Rendering is immediate and\n * uses the current styles appropriate for each geometry in the collection.\n *\n * @param {import(\"../../geom/GeometryCollection.js\").default} geometry Geometry collection.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawGeometryCollection = function drawGeometryCollection (geometry) {\n var geometries = geometry.getGeometriesArray();\n for (var i = 0, ii = geometries.length; i < ii; ++i) {\n this.drawGeometry(geometries[i]);\n }\n };\n\n /**\n * Render a Point geometry into the canvas. Rendering is immediate and uses\n * the current style.\n *\n * @param {import(\"../../geom/Point.js\").default|import(\"../Feature.js\").default} geometry Point geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawPoint = function drawPoint (geometry) {\n var flatCoordinates = geometry.getFlatCoordinates();\n var stride = geometry.getStride();\n if (this.image_) {\n this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);\n }\n if (this.text_ !== '') {\n this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);\n }\n };\n\n /**\n * Render a MultiPoint geometry into the canvas. Rendering is immediate and\n * uses the current style.\n *\n * @param {import(\"../../geom/MultiPoint.js\").default|import(\"../Feature.js\").default} geometry MultiPoint geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawMultiPoint = function drawMultiPoint (geometry) {\n var flatCoordinates = geometry.getFlatCoordinates();\n var stride = geometry.getStride();\n if (this.image_) {\n this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);\n }\n if (this.text_ !== '') {\n this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);\n }\n };\n\n /**\n * Render a LineString into the canvas. Rendering is immediate and uses\n * the current style.\n *\n * @param {import(\"../../geom/LineString.js\").default|import(\"../Feature.js\").default} geometry LineString geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawLineString = function drawLineString (geometry) {\n if (!intersects(this.extent_, geometry.getExtent())) {\n return;\n }\n if (this.strokeState_) {\n this.setContextStrokeState_(this.strokeState_);\n var context = this.context_;\n var flatCoordinates = geometry.getFlatCoordinates();\n context.beginPath();\n this.moveToLineTo_(flatCoordinates, 0, flatCoordinates.length,\n geometry.getStride(), false);\n context.stroke();\n }\n if (this.text_ !== '') {\n var flatMidpoint = geometry.getFlatMidpoint();\n this.drawText_(flatMidpoint, 0, 2, 2);\n }\n };\n\n /**\n * Render a MultiLineString geometry into the canvas. Rendering is immediate\n * and uses the current style.\n *\n * @param {import(\"../../geom/MultiLineString.js\").default|import(\"../Feature.js\").default} geometry MultiLineString geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawMultiLineString = function drawMultiLineString (geometry) {\n var geometryExtent = geometry.getExtent();\n if (!intersects(this.extent_, geometryExtent)) {\n return;\n }\n if (this.strokeState_) {\n this.setContextStrokeState_(this.strokeState_);\n var context = this.context_;\n var flatCoordinates = geometry.getFlatCoordinates();\n var offset = 0;\n var ends = /** @type {Array<number>} */ (geometry.getEnds());\n var stride = geometry.getStride();\n context.beginPath();\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, false);\n }\n context.stroke();\n }\n if (this.text_ !== '') {\n var flatMidpoints = geometry.getFlatMidpoints();\n this.drawText_(flatMidpoints, 0, flatMidpoints.length, 2);\n }\n };\n\n /**\n * Render a Polygon geometry into the canvas. Rendering is immediate and uses\n * the current style.\n *\n * @param {import(\"../../geom/Polygon.js\").default|import(\"../Feature.js\").default} geometry Polygon geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawPolygon = function drawPolygon (geometry) {\n if (!intersects(this.extent_, geometry.getExtent())) {\n return;\n }\n if (this.strokeState_ || this.fillState_) {\n if (this.fillState_) {\n this.setContextFillState_(this.fillState_);\n }\n if (this.strokeState_) {\n this.setContextStrokeState_(this.strokeState_);\n }\n var context = this.context_;\n context.beginPath();\n this.drawRings_(geometry.getOrientedFlatCoordinates(),\n 0, /** @type {Array<number>} */ (geometry.getEnds()), geometry.getStride());\n if (this.fillState_) {\n context.fill();\n }\n if (this.strokeState_) {\n context.stroke();\n }\n }\n if (this.text_ !== '') {\n var flatInteriorPoint = geometry.getFlatInteriorPoint();\n this.drawText_(flatInteriorPoint, 0, 2, 2);\n }\n };\n\n /**\n * Render MultiPolygon geometry into the canvas. Rendering is immediate and\n * uses the current style.\n * @param {import(\"../../geom/MultiPolygon.js\").default} geometry MultiPolygon geometry.\n * @override\n */\n CanvasImmediateRenderer.prototype.drawMultiPolygon = function drawMultiPolygon (geometry) {\n if (!intersects(this.extent_, geometry.getExtent())) {\n return;\n }\n if (this.strokeState_ || this.fillState_) {\n if (this.fillState_) {\n this.setContextFillState_(this.fillState_);\n }\n if (this.strokeState_) {\n this.setContextStrokeState_(this.strokeState_);\n }\n var context = this.context_;\n var flatCoordinates = geometry.getOrientedFlatCoordinates();\n var offset = 0;\n var endss = geometry.getEndss();\n var stride = geometry.getStride();\n context.beginPath();\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var ends = endss[i];\n offset = this.drawRings_(flatCoordinates, offset, ends, stride);\n }\n if (this.fillState_) {\n context.fill();\n }\n if (this.strokeState_) {\n context.stroke();\n }\n }\n if (this.text_ !== '') {\n var flatInteriorPoints = geometry.getFlatInteriorPoints();\n this.drawText_(flatInteriorPoints, 0, flatInteriorPoints.length, 2);\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").FillState} fillState Fill state.\n * @private\n */\n CanvasImmediateRenderer.prototype.setContextFillState_ = function setContextFillState_ (fillState) {\n var context = this.context_;\n var contextFillState = this.contextFillState_;\n if (!contextFillState) {\n context.fillStyle = fillState.fillStyle;\n this.contextFillState_ = {\n fillStyle: fillState.fillStyle\n };\n } else {\n if (contextFillState.fillStyle != fillState.fillStyle) {\n contextFillState.fillStyle = context.fillStyle = fillState.fillStyle;\n }\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").StrokeState} strokeState Stroke state.\n * @private\n */\n CanvasImmediateRenderer.prototype.setContextStrokeState_ = function setContextStrokeState_ (strokeState) {\n var context = this.context_;\n var contextStrokeState = this.contextStrokeState_;\n if (!contextStrokeState) {\n context.lineCap = /** @type {CanvasLineCap} */ (strokeState.lineCap);\n if (CANVAS_LINE_DASH) {\n context.setLineDash(strokeState.lineDash);\n context.lineDashOffset = strokeState.lineDashOffset;\n }\n context.lineJoin = /** @type {CanvasLineJoin} */ (strokeState.lineJoin);\n context.lineWidth = strokeState.lineWidth;\n context.miterLimit = strokeState.miterLimit;\n context.strokeStyle = strokeState.strokeStyle;\n this.contextStrokeState_ = {\n lineCap: strokeState.lineCap,\n lineDash: strokeState.lineDash,\n lineDashOffset: strokeState.lineDashOffset,\n lineJoin: strokeState.lineJoin,\n lineWidth: strokeState.lineWidth,\n miterLimit: strokeState.miterLimit,\n strokeStyle: strokeState.strokeStyle\n };\n } else {\n if (contextStrokeState.lineCap != strokeState.lineCap) {\n contextStrokeState.lineCap = context.lineCap = /** @type {CanvasLineCap} */ (strokeState.lineCap);\n }\n if (CANVAS_LINE_DASH) {\n if (!equals(contextStrokeState.lineDash, strokeState.lineDash)) {\n context.setLineDash(contextStrokeState.lineDash = strokeState.lineDash);\n }\n if (contextStrokeState.lineDashOffset != strokeState.lineDashOffset) {\n contextStrokeState.lineDashOffset = context.lineDashOffset =\n strokeState.lineDashOffset;\n }\n }\n if (contextStrokeState.lineJoin != strokeState.lineJoin) {\n contextStrokeState.lineJoin = context.lineJoin = /** @type {CanvasLineJoin} */ (strokeState.lineJoin);\n }\n if (contextStrokeState.lineWidth != strokeState.lineWidth) {\n contextStrokeState.lineWidth = context.lineWidth = strokeState.lineWidth;\n }\n if (contextStrokeState.miterLimit != strokeState.miterLimit) {\n contextStrokeState.miterLimit = context.miterLimit =\n strokeState.miterLimit;\n }\n if (contextStrokeState.strokeStyle != strokeState.strokeStyle) {\n contextStrokeState.strokeStyle = context.strokeStyle =\n strokeState.strokeStyle;\n }\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").TextState} textState Text state.\n * @private\n */\n CanvasImmediateRenderer.prototype.setContextTextState_ = function setContextTextState_ (textState) {\n var context = this.context_;\n var contextTextState = this.contextTextState_;\n var textAlign = textState.textAlign ?\n textState.textAlign : defaultTextAlign;\n if (!contextTextState) {\n context.font = textState.font;\n context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);\n context.textBaseline = /** @type {CanvasTextBaseline} */ (textState.textBaseline);\n this.contextTextState_ = {\n font: textState.font,\n textAlign: textAlign,\n textBaseline: textState.textBaseline\n };\n } else {\n if (contextTextState.font != textState.font) {\n contextTextState.font = context.font = textState.font;\n }\n if (contextTextState.textAlign != textAlign) {\n contextTextState.textAlign = context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);\n }\n if (contextTextState.textBaseline != textState.textBaseline) {\n contextTextState.textBaseline = context.textBaseline =\n /** @type {CanvasTextBaseline} */ (textState.textBaseline);\n }\n }\n };\n\n /**\n * Set the fill and stroke style for subsequent draw operations. To clear\n * either fill or stroke styles, pass null for the appropriate parameter.\n *\n * @param {import(\"../../style/Fill.js\").default} fillStyle Fill style.\n * @param {import(\"../../style/Stroke.js\").default} strokeStyle Stroke style.\n * @override\n */\n CanvasImmediateRenderer.prototype.setFillStrokeStyle = function setFillStrokeStyle (fillStyle, strokeStyle) {\n if (!fillStyle) {\n this.fillState_ = null;\n } else {\n var fillStyleColor = fillStyle.getColor();\n this.fillState_ = {\n fillStyle: asColorLike(fillStyleColor ?\n fillStyleColor : defaultFillStyle)\n };\n }\n if (!strokeStyle) {\n this.strokeState_ = null;\n } else {\n var strokeStyleColor = strokeStyle.getColor();\n var strokeStyleLineCap = strokeStyle.getLineCap();\n var strokeStyleLineDash = strokeStyle.getLineDash();\n var strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();\n var strokeStyleLineJoin = strokeStyle.getLineJoin();\n var strokeStyleWidth = strokeStyle.getWidth();\n var strokeStyleMiterLimit = strokeStyle.getMiterLimit();\n this.strokeState_ = {\n lineCap: strokeStyleLineCap !== undefined ?\n strokeStyleLineCap : defaultLineCap,\n lineDash: strokeStyleLineDash ?\n strokeStyleLineDash : defaultLineDash,\n lineDashOffset: strokeStyleLineDashOffset ?\n strokeStyleLineDashOffset : defaultLineDashOffset,\n lineJoin: strokeStyleLineJoin !== undefined ?\n strokeStyleLineJoin : defaultLineJoin,\n lineWidth: this.pixelRatio_ * (strokeStyleWidth !== undefined ?\n strokeStyleWidth : defaultLineWidth),\n miterLimit: strokeStyleMiterLimit !== undefined ?\n strokeStyleMiterLimit : defaultMiterLimit,\n strokeStyle: asColorLike(strokeStyleColor ?\n strokeStyleColor : defaultStrokeStyle)\n };\n }\n };\n\n /**\n * Set the image style for subsequent draw operations. Pass null to remove\n * the image style.\n *\n * @param {import(\"../../style/Image.js\").default} imageStyle Image style.\n * @override\n */\n CanvasImmediateRenderer.prototype.setImageStyle = function setImageStyle (imageStyle) {\n if (!imageStyle) {\n this.image_ = null;\n } else {\n var imageAnchor = imageStyle.getAnchor();\n // FIXME pixel ratio\n var imageImage = imageStyle.getImage(1);\n var imageOrigin = imageStyle.getOrigin();\n var imageSize = imageStyle.getSize();\n this.imageAnchorX_ = imageAnchor[0];\n this.imageAnchorY_ = imageAnchor[1];\n this.imageHeight_ = imageSize[1];\n this.image_ = imageImage;\n this.imageOpacity_ = imageStyle.getOpacity();\n this.imageOriginX_ = imageOrigin[0];\n this.imageOriginY_ = imageOrigin[1];\n this.imageRotateWithView_ = imageStyle.getRotateWithView();\n this.imageRotation_ = imageStyle.getRotation();\n this.imageScale_ = imageStyle.getScale() * this.pixelRatio_;\n this.imageWidth_ = imageSize[0];\n }\n };\n\n /**\n * Set the text style for subsequent draw operations. Pass null to\n * remove the text style.\n *\n * @param {import(\"../../style/Text.js\").default} textStyle Text style.\n * @override\n */\n CanvasImmediateRenderer.prototype.setTextStyle = function setTextStyle (textStyle) {\n if (!textStyle) {\n this.text_ = '';\n } else {\n var textFillStyle = textStyle.getFill();\n if (!textFillStyle) {\n this.textFillState_ = null;\n } else {\n var textFillStyleColor = textFillStyle.getColor();\n this.textFillState_ = {\n fillStyle: asColorLike(textFillStyleColor ?\n textFillStyleColor : defaultFillStyle)\n };\n }\n var textStrokeStyle = textStyle.getStroke();\n if (!textStrokeStyle) {\n this.textStrokeState_ = null;\n } else {\n var textStrokeStyleColor = textStrokeStyle.getColor();\n var textStrokeStyleLineCap = textStrokeStyle.getLineCap();\n var textStrokeStyleLineDash = textStrokeStyle.getLineDash();\n var textStrokeStyleLineDashOffset = textStrokeStyle.getLineDashOffset();\n var textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();\n var textStrokeStyleWidth = textStrokeStyle.getWidth();\n var textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();\n this.textStrokeState_ = {\n lineCap: textStrokeStyleLineCap !== undefined ?\n textStrokeStyleLineCap : defaultLineCap,\n lineDash: textStrokeStyleLineDash ?\n textStrokeStyleLineDash : defaultLineDash,\n lineDashOffset: textStrokeStyleLineDashOffset ?\n textStrokeStyleLineDashOffset : defaultLineDashOffset,\n lineJoin: textStrokeStyleLineJoin !== undefined ?\n textStrokeStyleLineJoin : defaultLineJoin,\n lineWidth: textStrokeStyleWidth !== undefined ?\n textStrokeStyleWidth : defaultLineWidth,\n miterLimit: textStrokeStyleMiterLimit !== undefined ?\n textStrokeStyleMiterLimit : defaultMiterLimit,\n strokeStyle: asColorLike(textStrokeStyleColor ?\n textStrokeStyleColor : defaultStrokeStyle)\n };\n }\n var textFont = textStyle.getFont();\n var textOffsetX = textStyle.getOffsetX();\n var textOffsetY = textStyle.getOffsetY();\n var textRotateWithView = textStyle.getRotateWithView();\n var textRotation = textStyle.getRotation();\n var textScale = textStyle.getScale();\n var textText = textStyle.getText();\n var textTextAlign = textStyle.getTextAlign();\n var textTextBaseline = textStyle.getTextBaseline();\n this.textState_ = {\n font: textFont !== undefined ?\n textFont : defaultFont,\n textAlign: textTextAlign !== undefined ?\n textTextAlign : defaultTextAlign,\n textBaseline: textTextBaseline !== undefined ?\n textTextBaseline : defaultTextBaseline\n };\n this.text_ = textText !== undefined ? textText : '';\n this.textOffsetX_ =\n textOffsetX !== undefined ? (this.pixelRatio_ * textOffsetX) : 0;\n this.textOffsetY_ =\n textOffsetY !== undefined ? (this.pixelRatio_ * textOffsetY) : 0;\n this.textRotateWithView_ = textRotateWithView !== undefined ? textRotateWithView : false;\n this.textRotation_ = textRotation !== undefined ? textRotation : 0;\n this.textScale_ = this.pixelRatio_ * (textScale !== undefined ?\n textScale : 1);\n }\n };\n\n return CanvasImmediateRenderer;\n}(VectorContext));\n\n\nexport default CanvasImmediateRenderer;\n\n//# sourceMappingURL=Immediate.js.map","/**\n * @module ol/style/IconImageCache\n */\nimport {asString} from '../color.js';\n\n/**\n * @classdesc\n * Singleton class. Available through {@link module:ol/style/IconImageCache~shared}.\n */\nvar IconImageCache = function IconImageCache() {\n\n /**\n * @type {!Object<string, import(\"./IconImage.js\").default>}\n * @private\n */\n this.cache_ = {};\n\n /**\n * @type {number}\n * @private\n */\n this.cacheSize_ = 0;\n\n /**\n * @type {number}\n * @private\n */\n this.maxCacheSize_ = 32;\n};\n\n/**\n* FIXME empty description for jsdoc\n*/\nIconImageCache.prototype.clear = function clear () {\n this.cache_ = {};\n this.cacheSize_ = 0;\n};\n\n/**\n* FIXME empty description for jsdoc\n*/\nIconImageCache.prototype.expire = function expire () {\n if (this.cacheSize_ > this.maxCacheSize_) {\n var i = 0;\n for (var key in this.cache_) {\n var iconImage = this.cache_[key];\n if ((i++ & 3) === 0 && !iconImage.hasListener()) {\n delete this.cache_[key];\n --this.cacheSize_;\n }\n }\n }\n};\n\n/**\n* @param {string} src Src.\n* @param {?string} crossOrigin Cross origin.\n* @param {import(\"../color.js\").Color} color Color.\n* @return {import(\"./IconImage.js\").default} Icon image.\n*/\nIconImageCache.prototype.get = function get (src, crossOrigin, color) {\n var key = getKey(src, crossOrigin, color);\n return key in this.cache_ ? this.cache_[key] : null;\n};\n\n/**\n* @param {string} src Src.\n* @param {?string} crossOrigin Cross origin.\n* @param {import(\"../color.js\").Color} color Color.\n* @param {import(\"./IconImage.js\").default} iconImage Icon image.\n*/\nIconImageCache.prototype.set = function set (src, crossOrigin, color, iconImage) {\n var key = getKey(src, crossOrigin, color);\n this.cache_[key] = iconImage;\n ++this.cacheSize_;\n};\n\n/**\n* Set the cache size of the icon cache. Default is `32`. Change this value when\n* your map uses more than 32 different icon images and you are not caching icon\n* styles on the application level.\n* @param {number} maxCacheSize Cache max size.\n* @api\n*/\nIconImageCache.prototype.setSize = function setSize (maxCacheSize) {\n this.maxCacheSize_ = maxCacheSize;\n this.expire();\n};\n\n\n/**\n * @param {string} src Src.\n * @param {?string} crossOrigin Cross origin.\n * @param {import(\"../color.js\").Color} color Color.\n * @return {string} Cache key.\n */\nfunction getKey(src, crossOrigin, color) {\n var colorString = color ? asString(color) : 'null';\n return crossOrigin + ':' + src + ':' + colorString;\n}\n\n\nexport default IconImageCache;\n\n\n/**\n * The {@link module:ol/style/IconImageCache~IconImageCache} for\n * {@link module:ol/style/Icon~Icon} images.\n * @api\n */\nexport var shared = new IconImageCache();\n\n//# sourceMappingURL=IconImageCache.js.map","/**\n * @module ol/renderer/Map\n */\nimport {abstract, getUid} from '../util.js';\nimport Disposable from '../Disposable.js';\nimport {listen, unlistenByKey} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {getWidth} from '../extent.js';\nimport {TRUE} from '../functions.js';\nimport {visibleAtResolution} from '../layer/Layer.js';\nimport {shared as iconImageCache} from '../style/IconImageCache.js';\nimport {compose as composeTransform, invert as invertTransform, setFromArray as transformSetFromArray} from '../transform.js';\n\n/**\n * @abstract\n */\nvar MapRenderer = /*@__PURE__*/(function (Disposable) {\n function MapRenderer(map) {\n Disposable.call(this);\n\n /**\n * @private\n * @type {import(\"../PluggableMap.js\").default}\n */\n this.map_ = map;\n\n /**\n * @private\n * @type {!Object<string, import(\"./Layer.js\").default>}\n */\n this.layerRenderers_ = {};\n\n /**\n * @private\n * @type {Object<string, import(\"../events.js\").EventsKey>}\n */\n this.layerRendererListeners_ = {};\n\n /**\n * @private\n * @type {Array<typeof import(\"./Layer.js\").default>}\n */\n this.layerRendererConstructors_ = [];\n\n }\n\n if ( Disposable ) MapRenderer.__proto__ = Disposable;\n MapRenderer.prototype = Object.create( Disposable && Disposable.prototype );\n MapRenderer.prototype.constructor = MapRenderer;\n\n /**\n * @abstract\n * @param {import(\"../render/EventType.js\").default} type Event type.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\n MapRenderer.prototype.dispatchRenderEvent = function dispatchRenderEvent (type, frameState) {\n abstract();\n };\n\n /**\n * Register layer renderer constructors.\n * @param {Array<typeof import(\"./Layer.js\").default>} constructors Layer renderers.\n */\n MapRenderer.prototype.registerLayerRenderers = function registerLayerRenderers (constructors) {\n this.layerRendererConstructors_.push.apply(this.layerRendererConstructors_, constructors);\n };\n\n /**\n * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n * @protected\n */\n MapRenderer.prototype.calculateMatrices2D = function calculateMatrices2D (frameState) {\n var viewState = frameState.viewState;\n var coordinateToPixelTransform = frameState.coordinateToPixelTransform;\n var pixelToCoordinateTransform = frameState.pixelToCoordinateTransform;\n\n composeTransform(coordinateToPixelTransform,\n frameState.size[0] / 2, frameState.size[1] / 2,\n 1 / viewState.resolution, -1 / viewState.resolution,\n -viewState.rotation,\n -viewState.center[0], -viewState.center[1]);\n\n invertTransform(\n transformSetFromArray(pixelToCoordinateTransform, coordinateToPixelTransform));\n };\n\n /**\n * Removes all layer renderers.\n */\n MapRenderer.prototype.removeLayerRenderers = function removeLayerRenderers () {\n for (var key in this.layerRenderers_) {\n this.removeLayerRendererByKey_(key).dispose();\n }\n };\n\n /**\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {function(this: S, import(\"../Feature.js\").FeatureLike,\n * import(\"../layer/Layer.js\").default): T} callback Feature callback.\n * @param {S} thisArg Value to use as `this` when executing `callback`.\n * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n * function, only layers which are visible and for which this function\n * returns `true` will be tested for features. By default, all visible\n * layers will be tested.\n * @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.\n * @return {T|undefined} Callback result.\n * @template S,T,U\n */\n MapRenderer.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (\n coordinate,\n frameState,\n hitTolerance,\n callback,\n thisArg,\n layerFilter,\n thisArg2\n ) {\n var result;\n var viewState = frameState.viewState;\n var viewResolution = viewState.resolution;\n\n /**\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {import(\"../layer/Layer.js\").default} layer Layer.\n * @return {?} Callback result.\n */\n function forEachFeatureAtCoordinate(feature, layer) {\n var managed = frameState.layerStates[getUid(layer)].managed;\n if (!(getUid(feature) in frameState.skippedFeatureUids && !managed)) {\n return callback.call(thisArg, feature, managed ? layer : null);\n }\n }\n\n var projection = viewState.projection;\n\n var translatedCoordinate = coordinate;\n if (projection.canWrapX()) {\n var projectionExtent = projection.getExtent();\n var worldWidth = getWidth(projectionExtent);\n var x = coordinate[0];\n if (x < projectionExtent[0] || x > projectionExtent[2]) {\n var worldsAway = Math.ceil((projectionExtent[0] - x) / worldWidth);\n translatedCoordinate = [x + worldWidth * worldsAway, coordinate[1]];\n }\n }\n\n var layerStates = frameState.layerStatesArray;\n var numLayers = layerStates.length;\n var i;\n for (i = numLayers - 1; i >= 0; --i) {\n var layerState = layerStates[i];\n var layer = layerState.layer;\n if (visibleAtResolution(layerState, viewResolution) && layerFilter.call(thisArg2, layer)) {\n var layerRenderer = this.getLayerRenderer(layer);\n var source = /** @type {import(\"../layer/Layer.js\").default} */ (layer).getSource();\n if (source) {\n result = layerRenderer.forEachFeatureAtCoordinate(\n source.getWrapX() ? translatedCoordinate : coordinate,\n frameState, hitTolerance, forEachFeatureAtCoordinate);\n }\n if (result) {\n return result;\n }\n }\n }\n return undefined;\n };\n\n /**\n * @abstract\n * @param {import(\"../pixel.js\").Pixel} pixel Pixel.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {function(this: S, import(\"../layer/Layer.js\").default, (Uint8ClampedArray|Uint8Array)): T} callback Layer\n * callback.\n * @param {S} thisArg Value to use as `this` when executing `callback`.\n * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n * function, only layers which are visible and for which this function\n * returns `true` will be tested for features. By default, all visible\n * layers will be tested.\n * @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.\n * @return {T|undefined} Callback result.\n * @template S,T,U\n */\n MapRenderer.prototype.forEachLayerAtPixel = function forEachLayerAtPixel (pixel, frameState, hitTolerance, callback, thisArg, layerFilter, thisArg2) {\n return abstract();\n };\n\n /**\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n * function, only layers which are visible and for which this function\n * returns `true` will be tested for features. By default, all visible\n * layers will be tested.\n * @param {U} thisArg Value to use as `this` when executing `layerFilter`.\n * @return {boolean} Is there a feature at the given coordinate?\n * @template U\n */\n MapRenderer.prototype.hasFeatureAtCoordinate = function hasFeatureAtCoordinate (coordinate, frameState, hitTolerance, layerFilter, thisArg) {\n var hasFeature = this.forEachFeatureAtCoordinate(\n coordinate, frameState, hitTolerance, TRUE, this, layerFilter, thisArg);\n\n return hasFeature !== undefined;\n };\n\n /**\n * @param {import(\"../layer/Base.js\").default} layer Layer.\n * @protected\n * @return {import(\"./Layer.js\").default} Layer renderer.\n */\n MapRenderer.prototype.getLayerRenderer = function getLayerRenderer (layer) {\n var layerKey = getUid(layer);\n if (layerKey in this.layerRenderers_) {\n return this.layerRenderers_[layerKey];\n } else {\n var renderer;\n for (var i = 0, ii = this.layerRendererConstructors_.length; i < ii; ++i) {\n var candidate = this.layerRendererConstructors_[i];\n if (candidate['handles'](layer)) {\n renderer = candidate['create'](this, layer);\n break;\n }\n }\n if (renderer) {\n this.layerRenderers_[layerKey] = renderer;\n this.layerRendererListeners_[layerKey] = listen(renderer,\n EventType.CHANGE, this.handleLayerRendererChange_, this);\n } else {\n throw new Error('Unable to create renderer for layer: ' + layer.getType());\n }\n return renderer;\n }\n };\n\n /**\n * @param {string} layerKey Layer key.\n * @protected\n * @return {import(\"./Layer.js\").default} Layer renderer.\n */\n MapRenderer.prototype.getLayerRendererByKey = function getLayerRendererByKey (layerKey) {\n return this.layerRenderers_[layerKey];\n };\n\n /**\n * @protected\n * @return {Object<string, import(\"./Layer.js\").default>} Layer renderers.\n */\n MapRenderer.prototype.getLayerRenderers = function getLayerRenderers () {\n return this.layerRenderers_;\n };\n\n /**\n * @return {import(\"../PluggableMap.js\").default} Map.\n */\n MapRenderer.prototype.getMap = function getMap () {\n return this.map_;\n };\n\n /**\n * Handle changes in a layer renderer.\n * @private\n */\n MapRenderer.prototype.handleLayerRendererChange_ = function handleLayerRendererChange_ () {\n this.map_.render();\n };\n\n /**\n * @param {string} layerKey Layer key.\n * @return {import(\"./Layer.js\").default} Layer renderer.\n * @private\n */\n MapRenderer.prototype.removeLayerRendererByKey_ = function removeLayerRendererByKey_ (layerKey) {\n var layerRenderer = this.layerRenderers_[layerKey];\n delete this.layerRenderers_[layerKey];\n\n unlistenByKey(this.layerRendererListeners_[layerKey]);\n delete this.layerRendererListeners_[layerKey];\n\n return layerRenderer;\n };\n\n /**\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @private\n */\n MapRenderer.prototype.removeUnusedLayerRenderers_ = function removeUnusedLayerRenderers_ (map, frameState) {\n for (var layerKey in this.layerRenderers_) {\n if (!frameState || !(layerKey in frameState.layerStates)) {\n this.removeLayerRendererByKey_(layerKey).dispose();\n }\n }\n };\n\n /**\n * Render.\n * @abstract\n * @param {?import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\n MapRenderer.prototype.renderFrame = function renderFrame (frameState) {\n abstract();\n };\n\n /**\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @protected\n */\n MapRenderer.prototype.scheduleExpireIconCache = function scheduleExpireIconCache (frameState) {\n frameState.postRenderFunctions.push(/** @type {import(\"../PluggableMap.js\").PostRenderFunction} */ (expireIconCache));\n };\n\n /**\n * @param {!import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @protected\n */\n MapRenderer.prototype.scheduleRemoveUnusedLayerRenderers = function scheduleRemoveUnusedLayerRenderers (frameState) {\n for (var layerKey in this.layerRenderers_) {\n if (!(layerKey in frameState.layerStates)) {\n frameState.postRenderFunctions.push(\n /** @type {import(\"../PluggableMap.js\").PostRenderFunction} */ (this.removeUnusedLayerRenderers_.bind(this))\n );\n return;\n }\n }\n };\n\n return MapRenderer;\n}(Disposable));\n\n\n/**\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\nfunction expireIconCache(map, frameState) {\n iconImageCache.expire();\n}\n\n\n/**\n * @param {import(\"../layer/Layer.js\").State} state1 First layer state.\n * @param {import(\"../layer/Layer.js\").State} state2 Second layer state.\n * @return {number} The zIndex difference.\n */\nexport function sortByZIndex(state1, state2) {\n return state1.zIndex - state2.zIndex;\n}\nexport default MapRenderer;\n\n//# sourceMappingURL=Map.js.map","/**\n * @module ol/renderer/canvas/Map\n */\nimport {create as createTransform, apply as applyTransform, compose as composeTransform} from '../../transform.js';\nimport {includes, stableSort} from '../../array.js';\nimport {CLASS_UNSELECTABLE} from '../../css.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {visibleAtResolution} from '../../layer/Layer.js';\nimport RenderEvent from '../../render/Event.js';\nimport RenderEventType from '../../render/EventType.js';\nimport {rotateAtOffset} from '../../render/canvas.js';\nimport CanvasImmediateRenderer from '../../render/canvas/Immediate.js';\nimport MapRenderer, {sortByZIndex} from '../Map.js';\nimport SourceState from '../../source/State.js';\n\n\n/**\n * @type {Array<typeof import(\"../Layer.js\").default>}\n */\nexport var layerRendererConstructors = [];\n\n/**\n * @classdesc\n * Canvas map renderer.\n * @api\n */\nvar CanvasMapRenderer = /*@__PURE__*/(function (MapRenderer) {\n function CanvasMapRenderer(map) {\n MapRenderer.call(this, map);\n\n var container = map.getViewport();\n\n /**\n * @private\n * @type {CanvasRenderingContext2D}\n */\n this.context_ = createCanvasContext2D();\n\n /**\n * @private\n * @type {HTMLCanvasElement}\n */\n this.canvas_ = this.context_.canvas;\n\n this.canvas_.style.width = '100%';\n this.canvas_.style.height = '100%';\n this.canvas_.style.display = 'block';\n this.canvas_.className = CLASS_UNSELECTABLE;\n container.insertBefore(this.canvas_, container.childNodes[0] || null);\n\n /**\n * @private\n * @type {boolean}\n */\n this.renderedVisible_ = true;\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.transform_ = createTransform();\n\n }\n\n if ( MapRenderer ) CanvasMapRenderer.__proto__ = MapRenderer;\n CanvasMapRenderer.prototype = Object.create( MapRenderer && MapRenderer.prototype );\n CanvasMapRenderer.prototype.constructor = CanvasMapRenderer;\n\n /**\n * @param {import(\"../../render/EventType.js\").default} type Event type.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n */\n CanvasMapRenderer.prototype.dispatchRenderEvent = function dispatchRenderEvent (type, frameState) {\n var map = this.getMap();\n var context = this.context_;\n if (map.hasListener(type)) {\n var extent = frameState.extent;\n var pixelRatio = frameState.pixelRatio;\n var viewState = frameState.viewState;\n var rotation = viewState.rotation;\n\n var transform = this.getTransform(frameState);\n\n var vectorContext = new CanvasImmediateRenderer(context, pixelRatio,\n extent, transform, rotation);\n var composeEvent = new RenderEvent(type, vectorContext,\n frameState, context, null);\n map.dispatchEvent(composeEvent);\n }\n };\n\n /**\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @protected\n * @return {!import(\"../../transform.js\").Transform} Transform.\n */\n CanvasMapRenderer.prototype.getTransform = function getTransform (frameState) {\n var viewState = frameState.viewState;\n var dx1 = this.canvas_.width / 2;\n var dy1 = this.canvas_.height / 2;\n var sx = frameState.pixelRatio / viewState.resolution;\n var sy = -sx;\n var angle = -viewState.rotation;\n var dx2 = -viewState.center[0];\n var dy2 = -viewState.center[1];\n return composeTransform(this.transform_, dx1, dy1, sx, sy, angle, dx2, dy2);\n };\n\n /**\n * @inheritDoc\n */\n CanvasMapRenderer.prototype.renderFrame = function renderFrame (frameState) {\n\n if (!frameState) {\n if (this.renderedVisible_) {\n this.canvas_.style.display = 'none';\n this.renderedVisible_ = false;\n }\n return;\n }\n\n var context = this.context_;\n var pixelRatio = frameState.pixelRatio;\n var width = Math.round(frameState.size[0] * pixelRatio);\n var height = Math.round(frameState.size[1] * pixelRatio);\n if (this.canvas_.width != width || this.canvas_.height != height) {\n this.canvas_.width = width;\n this.canvas_.height = height;\n } else {\n context.clearRect(0, 0, width, height);\n }\n\n var rotation = frameState.viewState.rotation;\n\n this.calculateMatrices2D(frameState);\n\n this.dispatchRenderEvent(RenderEventType.PRECOMPOSE, frameState);\n\n var layerStatesArray = frameState.layerStatesArray;\n stableSort(layerStatesArray, sortByZIndex);\n\n if (rotation) {\n context.save();\n rotateAtOffset(context, rotation, width / 2, height / 2);\n }\n\n var viewResolution = frameState.viewState.resolution;\n var i, ii;\n for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n var layerState = layerStatesArray[i];\n var layer = layerState.layer;\n var layerRenderer = /** @type {import(\"./Layer.js\").default} */ (this.getLayerRenderer(layer));\n if (!visibleAtResolution(layerState, viewResolution) ||\n layerState.sourceState != SourceState.READY) {\n continue;\n }\n if (layerRenderer.prepareFrame(frameState, layerState)) {\n layerRenderer.composeFrame(frameState, layerState, context);\n }\n }\n\n if (rotation) {\n context.restore();\n }\n\n this.dispatchRenderEvent(RenderEventType.POSTCOMPOSE, frameState);\n\n if (!this.renderedVisible_) {\n this.canvas_.style.display = '';\n this.renderedVisible_ = true;\n }\n\n this.scheduleRemoveUnusedLayerRenderers(frameState);\n this.scheduleExpireIconCache(frameState);\n };\n\n /**\n * @inheritDoc\n */\n CanvasMapRenderer.prototype.forEachLayerAtPixel = function forEachLayerAtPixel (pixel, frameState, hitTolerance, callback, thisArg, layerFilter, thisArg2) {\n var result;\n var viewState = frameState.viewState;\n var viewResolution = viewState.resolution;\n\n var layerStates = frameState.layerStatesArray;\n var numLayers = layerStates.length;\n\n var coordinate = applyTransform(\n frameState.pixelToCoordinateTransform, pixel.slice());\n\n var i;\n for (i = numLayers - 1; i >= 0; --i) {\n var layerState = layerStates[i];\n var layer = layerState.layer;\n if (visibleAtResolution(layerState, viewResolution) && layerFilter.call(thisArg2, layer)) {\n var layerRenderer = /** @type {import(\"./Layer.js\").default} */ (this.getLayerRenderer(layer));\n result = layerRenderer.forEachLayerAtCoordinate(\n coordinate, frameState, hitTolerance, callback, thisArg);\n if (result) {\n return result;\n }\n }\n }\n return undefined;\n };\n\n /**\n * @inheritDoc\n */\n CanvasMapRenderer.prototype.registerLayerRenderers = function registerLayerRenderers (constructors) {\n MapRenderer.prototype.registerLayerRenderers.call(this, constructors);\n for (var i = 0, ii = constructors.length; i < ii; ++i) {\n var ctor = constructors[i];\n if (!includes(layerRendererConstructors, ctor)) {\n layerRendererConstructors.push(ctor);\n }\n }\n };\n\n return CanvasMapRenderer;\n}(MapRenderer));\n\n\nexport default CanvasMapRenderer;\n\n//# sourceMappingURL=Map.js.map","/**\n * @module ol/renderer/Layer\n */\nimport {getUid} from '../util.js';\nimport ImageState from '../ImageState.js';\nimport Observable from '../Observable.js';\nimport TileState from '../TileState.js';\nimport {listen} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport SourceState from '../source/State.js';\n\nvar LayerRenderer = /*@__PURE__*/(function (Observable) {\n function LayerRenderer(layer) {\n\n Observable.call(this);\n\n /**\n * @private\n * @type {import(\"../layer/Layer.js\").default}\n */\n this.layer_ = layer;\n\n }\n\n if ( Observable ) LayerRenderer.__proto__ = Observable;\n LayerRenderer.prototype = Object.create( Observable && Observable.prototype );\n LayerRenderer.prototype.constructor = LayerRenderer;\n\n /**\n * Create a function that adds loaded tiles to the tile lookup.\n * @param {import(\"../source/Tile.js\").default} source Tile source.\n * @param {import(\"../proj/Projection.js\").default} projection Projection of the tiles.\n * @param {Object<number, Object<string, import(\"../Tile.js\").default>>} tiles Lookup of loaded tiles by zoom level.\n * @return {function(number, import(\"../TileRange.js\").default):boolean} A function that can be\n * called with a zoom level and a tile range to add loaded tiles to the lookup.\n * @protected\n */\n LayerRenderer.prototype.createLoadedTileFinder = function createLoadedTileFinder (source, projection, tiles) {\n return (\n /**\n * @param {number} zoom Zoom level.\n * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n * @return {boolean} The tile range is fully loaded.\n */\n function(zoom, tileRange) {\n /**\n * @param {import(\"../Tile.js\").default} tile Tile.\n */\n function callback(tile) {\n if (!tiles[zoom]) {\n tiles[zoom] = {};\n }\n tiles[zoom][tile.tileCoord.toString()] = tile;\n }\n return source.forEachLoadedTile(projection, zoom, tileRange, callback);\n }\n );\n };\n\n /**\n * @abstract\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {function(import(\"../Feature.js\").FeatureLike, import(\"../layer/Layer.js\").default): T} callback Feature callback.\n * @return {T|void} Callback result.\n * @template T\n */\n LayerRenderer.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (coordinate, frameState, hitTolerance, callback) {};\n\n /**\n * @return {import(\"../layer/Layer.js\").default} Layer.\n */\n LayerRenderer.prototype.getLayer = function getLayer () {\n return this.layer_;\n };\n\n /**\n * Handle changes in image state.\n * @param {import(\"../events/Event.js\").default} event Image change event.\n * @private\n */\n LayerRenderer.prototype.handleImageChange_ = function handleImageChange_ (event) {\n var image = /** @type {import(\"../Image.js\").default} */ (event.target);\n if (image.getState() === ImageState.LOADED) {\n this.renderIfReadyAndVisible();\n }\n };\n\n /**\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @return {boolean} Is there a feature at the given coordinate?\n */\n LayerRenderer.prototype.hasFeatureAtCoordinate = function hasFeatureAtCoordinate (coordinate, frameState) {\n return false;\n };\n\n /**\n * Load the image if not already loaded, and register the image change\n * listener if needed.\n * @param {import(\"../ImageBase.js\").default} image Image.\n * @return {boolean} `true` if the image is already loaded, `false` otherwise.\n * @protected\n */\n LayerRenderer.prototype.loadImage = function loadImage (image) {\n var imageState = image.getState();\n if (imageState != ImageState.LOADED && imageState != ImageState.ERROR) {\n listen(image, EventType.CHANGE, this.handleImageChange_, this);\n }\n if (imageState == ImageState.IDLE) {\n image.load();\n imageState = image.getState();\n }\n return imageState == ImageState.LOADED;\n };\n\n /**\n * @protected\n */\n LayerRenderer.prototype.renderIfReadyAndVisible = function renderIfReadyAndVisible () {\n var layer = this.getLayer();\n if (layer.getVisible() && layer.getSourceState() == SourceState.READY) {\n this.changed();\n }\n };\n\n /**\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../source/Tile.js\").default} tileSource Tile source.\n * @protected\n */\n LayerRenderer.prototype.scheduleExpireCache = function scheduleExpireCache (frameState, tileSource) {\n if (tileSource.canExpireCache()) {\n /**\n * @param {import(\"../source/Tile.js\").default} tileSource Tile source.\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\n var postRenderFunction = function(tileSource, map, frameState) {\n var tileSourceKey = getUid(tileSource);\n if (tileSourceKey in frameState.usedTiles) {\n tileSource.expireCache(frameState.viewState.projection,\n frameState.usedTiles[tileSourceKey]);\n }\n }.bind(null, tileSource);\n\n frameState.postRenderFunctions.push(\n /** @type {import(\"../PluggableMap.js\").PostRenderFunction} */ (postRenderFunction)\n );\n }\n };\n\n /**\n * @param {!Object<string, !Object<string, import(\"../TileRange.js\").default>>} usedTiles Used tiles.\n * @param {import(\"../source/Tile.js\").default} tileSource Tile source.\n * @param {number} z Z.\n * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n * @protected\n */\n LayerRenderer.prototype.updateUsedTiles = function updateUsedTiles (usedTiles, tileSource, z, tileRange) {\n // FIXME should we use tilesToDrawByZ instead?\n var tileSourceKey = getUid(tileSource);\n var zKey = z.toString();\n if (tileSourceKey in usedTiles) {\n if (zKey in usedTiles[tileSourceKey]) {\n usedTiles[tileSourceKey][zKey].extend(tileRange);\n } else {\n usedTiles[tileSourceKey][zKey] = tileRange;\n }\n } else {\n usedTiles[tileSourceKey] = {};\n usedTiles[tileSourceKey][zKey] = tileRange;\n }\n };\n\n /**\n * Manage tile pyramid.\n * This function performs a number of functions related to the tiles at the\n * current zoom and lower zoom levels:\n * - registers idle tiles in frameState.wantedTiles so that they are not\n * discarded by the tile queue\n * - enqueues missing tiles\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../source/Tile.js\").default} tileSource Tile source.\n * @param {import(\"../tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @param {number} currentZ Current Z.\n * @param {number} preload Load low resolution tiles up to 'preload' levels.\n * @param {function(this: T, import(\"../Tile.js\").default)=} opt_tileCallback Tile callback.\n * @param {T=} opt_this Object to use as `this` in `opt_tileCallback`.\n * @protected\n * @template T\n */\n LayerRenderer.prototype.manageTilePyramid = function manageTilePyramid (\n frameState,\n tileSource,\n tileGrid,\n pixelRatio,\n projection,\n extent,\n currentZ,\n preload,\n opt_tileCallback,\n opt_this\n ) {\n var tileSourceKey = getUid(tileSource);\n if (!(tileSourceKey in frameState.wantedTiles)) {\n frameState.wantedTiles[tileSourceKey] = {};\n }\n var wantedTiles = frameState.wantedTiles[tileSourceKey];\n var tileQueue = frameState.tileQueue;\n var minZoom = tileGrid.getMinZoom();\n var tile, tileRange, tileResolution, x, y, z;\n for (z = minZoom; z <= currentZ; ++z) {\n tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z, tileRange);\n tileResolution = tileGrid.getResolution(z);\n for (x = tileRange.minX; x <= tileRange.maxX; ++x) {\n for (y = tileRange.minY; y <= tileRange.maxY; ++y) {\n if (currentZ - z <= preload) {\n tile = tileSource.getTile(z, x, y, pixelRatio, projection);\n if (tile.getState() == TileState.IDLE) {\n wantedTiles[tile.getKey()] = true;\n if (!tileQueue.isKeyQueued(tile.getKey())) {\n tileQueue.enqueue([tile, tileSourceKey,\n tileGrid.getTileCoordCenter(tile.tileCoord), tileResolution]);\n }\n }\n if (opt_tileCallback !== undefined) {\n opt_tileCallback.call(opt_this, tile);\n }\n } else {\n tileSource.useTile(z, x, y, projection);\n }\n }\n }\n }\n };\n\n return LayerRenderer;\n}(Observable));\n\nexport default LayerRenderer;\n\n//# sourceMappingURL=Layer.js.map","/**\n * @module ol/renderer/canvas/Layer\n */\nimport {abstract} from '../../util.js';\nimport {getBottomLeft, getBottomRight, getTopLeft, getTopRight} from '../../extent.js';\nimport {TRUE} from '../../functions.js';\nimport RenderEvent from '../../render/Event.js';\nimport RenderEventType from '../../render/EventType.js';\nimport {rotateAtOffset} from '../../render/canvas.js';\nimport CanvasImmediateRenderer from '../../render/canvas/Immediate.js';\nimport LayerRenderer from '../Layer.js';\nimport {create as createTransform, apply as applyTransform, compose as composeTransform} from '../../transform.js';\n\n/**\n * @abstract\n */\nvar CanvasLayerRenderer = /*@__PURE__*/(function (LayerRenderer) {\n function CanvasLayerRenderer(layer) {\n\n LayerRenderer.call(this, layer);\n\n /**\n * @protected\n * @type {number}\n */\n this.renderedResolution;\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.transform_ = createTransform();\n\n }\n\n if ( LayerRenderer ) CanvasLayerRenderer.__proto__ = LayerRenderer;\n CanvasLayerRenderer.prototype = Object.create( LayerRenderer && LayerRenderer.prototype );\n CanvasLayerRenderer.prototype.constructor = CanvasLayerRenderer;\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../extent.js\").Extent} extent Clip extent.\n * @protected\n */\n CanvasLayerRenderer.prototype.clip = function clip (context, frameState, extent) {\n var pixelRatio = frameState.pixelRatio;\n var width = frameState.size[0] * pixelRatio;\n var height = frameState.size[1] * pixelRatio;\n var rotation = frameState.viewState.rotation;\n var topLeft = getTopLeft(extent);\n var topRight = getTopRight(extent);\n var bottomRight = getBottomRight(extent);\n var bottomLeft = getBottomLeft(extent);\n\n applyTransform(frameState.coordinateToPixelTransform, topLeft);\n applyTransform(frameState.coordinateToPixelTransform, topRight);\n applyTransform(frameState.coordinateToPixelTransform, bottomRight);\n applyTransform(frameState.coordinateToPixelTransform, bottomLeft);\n\n context.save();\n rotateAtOffset(context, -rotation, width / 2, height / 2);\n context.beginPath();\n context.moveTo(topLeft[0] * pixelRatio, topLeft[1] * pixelRatio);\n context.lineTo(topRight[0] * pixelRatio, topRight[1] * pixelRatio);\n context.lineTo(bottomRight[0] * pixelRatio, bottomRight[1] * pixelRatio);\n context.lineTo(bottomLeft[0] * pixelRatio, bottomLeft[1] * pixelRatio);\n context.clip();\n rotateAtOffset(context, rotation, width / 2, height / 2);\n };\n\n /**\n * @param {import(\"../../render/EventType.js\").default} type Event type.\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../transform.js\").Transform=} opt_transform Transform.\n * @private\n */\n CanvasLayerRenderer.prototype.dispatchComposeEvent_ = function dispatchComposeEvent_ (type, context, frameState, opt_transform) {\n var layer = this.getLayer();\n if (layer.hasListener(type)) {\n var width = frameState.size[0] * frameState.pixelRatio;\n var height = frameState.size[1] * frameState.pixelRatio;\n var rotation = frameState.viewState.rotation;\n rotateAtOffset(context, -rotation, width / 2, height / 2);\n var transform = opt_transform !== undefined ?\n opt_transform : this.getTransform(frameState, 0);\n var render = new CanvasImmediateRenderer(\n context, frameState.pixelRatio, frameState.extent, transform,\n frameState.viewState.rotation);\n var composeEvent = new RenderEvent(type, render, frameState,\n context, null);\n layer.dispatchEvent(composeEvent);\n rotateAtOffset(context, rotation, width / 2, height / 2);\n }\n };\n\n /**\n * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState FrameState.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {function(this: S, import(\"../../layer/Layer.js\").default, (Uint8ClampedArray|Uint8Array)): T} callback Layer\n * callback.\n * @param {S} thisArg Value to use as `this` when executing `callback`.\n * @return {T|undefined} Callback result.\n * @template S,T,U\n */\n CanvasLayerRenderer.prototype.forEachLayerAtCoordinate = function forEachLayerAtCoordinate (coordinate, frameState, hitTolerance, callback, thisArg) {\n var hasFeature = this.forEachFeatureAtCoordinate(coordinate, frameState, hitTolerance, TRUE);\n\n if (hasFeature) {\n return callback.call(thisArg, this.getLayer(), null);\n } else {\n return undefined;\n }\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../layer/Layer.js\").State} layerState Layer state.\n * @param {import(\"../../transform.js\").Transform=} opt_transform Transform.\n * @protected\n */\n CanvasLayerRenderer.prototype.postCompose = function postCompose (context, frameState, layerState, opt_transform) {\n this.dispatchComposeEvent_(RenderEventType.POSTCOMPOSE, context, frameState, opt_transform);\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../transform.js\").Transform=} opt_transform Transform.\n * @protected\n */\n CanvasLayerRenderer.prototype.preCompose = function preCompose (context, frameState, opt_transform) {\n this.dispatchComposeEvent_(RenderEventType.PRECOMPOSE, context, frameState, opt_transform);\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../transform.js\").Transform=} opt_transform Transform.\n * @protected\n */\n CanvasLayerRenderer.prototype.dispatchRenderEvent = function dispatchRenderEvent (context, frameState, opt_transform) {\n this.dispatchComposeEvent_(RenderEventType.RENDER, context, frameState, opt_transform);\n };\n\n /**\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {number} offsetX Offset on the x-axis in view coordinates.\n * @protected\n * @return {!import(\"../../transform.js\").Transform} Transform.\n */\n CanvasLayerRenderer.prototype.getTransform = function getTransform (frameState, offsetX) {\n var viewState = frameState.viewState;\n var pixelRatio = frameState.pixelRatio;\n var dx1 = pixelRatio * frameState.size[0] / 2;\n var dy1 = pixelRatio * frameState.size[1] / 2;\n var sx = pixelRatio / viewState.resolution;\n var sy = -sx;\n var angle = -viewState.rotation;\n var dx2 = -viewState.center[0] + offsetX;\n var dy2 = -viewState.center[1];\n return composeTransform(this.transform_, dx1, dy1, sx, sy, angle, dx2, dy2);\n };\n\n /**\n * @abstract\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../layer/Layer.js\").State} layerState Layer state.\n * @param {CanvasRenderingContext2D} context Context.\n */\n CanvasLayerRenderer.prototype.composeFrame = function composeFrame (frameState, layerState, context) {\n abstract();\n };\n\n /**\n * @abstract\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../layer/Layer.js\").State} layerState Layer state.\n * @return {boolean} whether composeFrame should be called.\n */\n CanvasLayerRenderer.prototype.prepareFrame = function prepareFrame (frameState, layerState) {\n return abstract();\n };\n\n return CanvasLayerRenderer;\n}(LayerRenderer));\n\nexport default CanvasLayerRenderer;\n\n//# sourceMappingURL=Layer.js.map","/**\n * @module ol/renderer/canvas/IntermediateCanvas\n */\nimport {abstract} from '../../util.js';\nimport {scale as scaleCoordinate} from '../../coordinate.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {containsExtent, intersects} from '../../extent.js';\nimport CanvasLayerRenderer from './Layer.js';\nimport {create as createTransform, apply as applyTransform} from '../../transform.js';\n\n/**\n * @abstract\n */\nvar IntermediateCanvasRenderer = /*@__PURE__*/(function (CanvasLayerRenderer) {\n function IntermediateCanvasRenderer(layer) {\n\n CanvasLayerRenderer.call(this, layer);\n\n /**\n * @protected\n * @type {import(\"../../transform.js\").Transform}\n */\n this.coordinateToCanvasPixelTransform = createTransform();\n\n /**\n * @private\n * @type {CanvasRenderingContext2D}\n */\n this.hitCanvasContext_ = null;\n\n }\n\n if ( CanvasLayerRenderer ) IntermediateCanvasRenderer.__proto__ = CanvasLayerRenderer;\n IntermediateCanvasRenderer.prototype = Object.create( CanvasLayerRenderer && CanvasLayerRenderer.prototype );\n IntermediateCanvasRenderer.prototype.constructor = IntermediateCanvasRenderer;\n\n /**\n * @inheritDoc\n */\n IntermediateCanvasRenderer.prototype.composeFrame = function composeFrame (frameState, layerState, context) {\n\n this.preCompose(context, frameState);\n\n var image = this.getImage();\n if (image) {\n\n // clipped rendering if layer extent is set\n var extent = layerState.extent;\n var clipped = extent !== undefined &&\n !containsExtent(extent, frameState.extent) &&\n intersects(extent, frameState.extent);\n if (clipped) {\n this.clip(context, frameState, /** @type {import(\"../../extent.js\").Extent} */ (extent));\n }\n\n var imageTransform = this.getImageTransform();\n // for performance reasons, context.save / context.restore is not used\n // to save and restore the transformation matrix and the opacity.\n // see http://jsperf.com/context-save-restore-versus-variable\n var alpha = context.globalAlpha;\n context.globalAlpha = layerState.opacity;\n\n // for performance reasons, context.setTransform is only used\n // when the view is rotated. see http://jsperf.com/canvas-transform\n var dx = imageTransform[4];\n var dy = imageTransform[5];\n var dw = image.width * imageTransform[0];\n var dh = image.height * imageTransform[3];\n if (dw >= 0.5 && dh >= 0.5) {\n context.drawImage(image, 0, 0, +image.width, +image.height,\n Math.round(dx), Math.round(dy), Math.round(dw), Math.round(dh));\n }\n context.globalAlpha = alpha;\n\n if (clipped) {\n context.restore();\n }\n }\n\n this.postCompose(context, frameState, layerState);\n };\n\n /**\n * @abstract\n * @return {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement} Canvas.\n */\n IntermediateCanvasRenderer.prototype.getImage = function getImage () {\n return abstract();\n };\n\n /**\n * @abstract\n * @return {!import(\"../../transform.js\").Transform} Image transform.\n */\n IntermediateCanvasRenderer.prototype.getImageTransform = function getImageTransform () {\n return abstract();\n };\n\n /**\n * @inheritDoc\n */\n IntermediateCanvasRenderer.prototype.forEachLayerAtCoordinate = function forEachLayerAtCoordinate (coordinate, frameState, hitTolerance, callback, thisArg) {\n if (!this.getImage()) {\n return undefined;\n }\n\n var pixel = applyTransform(this.coordinateToCanvasPixelTransform, coordinate.slice());\n scaleCoordinate(pixel, frameState.viewState.resolution / this.renderedResolution);\n\n if (!this.hitCanvasContext_) {\n this.hitCanvasContext_ = createCanvasContext2D(1, 1);\n }\n\n this.hitCanvasContext_.clearRect(0, 0, 1, 1);\n this.hitCanvasContext_.drawImage(this.getImage(), pixel[0], pixel[1], 1, 1, 0, 0, 1, 1);\n\n var imageData = this.hitCanvasContext_.getImageData(0, 0, 1, 1).data;\n if (imageData[3] > 0) {\n return callback.call(thisArg, this.getLayer(), imageData);\n } else {\n return undefined;\n }\n };\n\n return IntermediateCanvasRenderer;\n}(CanvasLayerRenderer));\n\n\nexport default IntermediateCanvasRenderer;\n\n//# sourceMappingURL=IntermediateCanvas.js.map","/**\n * @module ol/renderer/canvas/ImageLayer\n */\nimport {ENABLE_RASTER_REPROJECTION} from '../../reproj/common.js';\nimport ImageCanvas from '../../ImageCanvas.js';\nimport LayerType from '../../LayerType.js';\nimport ViewHint from '../../ViewHint.js';\nimport {equals} from '../../array.js';\nimport {getHeight, getIntersection, getWidth, isEmpty} from '../../extent.js';\nimport VectorRenderType from '../../layer/VectorRenderType.js';\nimport {assign} from '../../obj.js';\nimport {layerRendererConstructors} from './Map.js';\nimport IntermediateCanvasRenderer from './IntermediateCanvas.js';\nimport {create as createTransform, compose as composeTransform} from '../../transform.js';\n\n/**\n * @classdesc\n * Canvas renderer for image layers.\n * @api\n */\nvar CanvasImageLayerRenderer = /*@__PURE__*/(function (IntermediateCanvasRenderer) {\n function CanvasImageLayerRenderer(imageLayer) {\n\n IntermediateCanvasRenderer.call(this, imageLayer);\n\n /**\n * @private\n * @type {?import(\"../../ImageBase.js\").default}\n */\n this.image_ = null;\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.imageTransform_ = createTransform();\n\n /**\n * @type {!Array<string>}\n */\n this.skippedFeatures_ = [];\n\n /**\n * @private\n * @type {import(\"./VectorLayer.js\").default}\n */\n this.vectorRenderer_ = null;\n\n if (imageLayer.getType() === LayerType.VECTOR) {\n for (var i = 0, ii = layerRendererConstructors.length; i < ii; ++i) {\n var ctor = layerRendererConstructors[i];\n if (ctor !== CanvasImageLayerRenderer && ctor['handles'](imageLayer)) {\n this.vectorRenderer_ = /** @type {import(\"./VectorLayer.js\").default} */ (new ctor(imageLayer));\n break;\n }\n }\n }\n\n }\n\n if ( IntermediateCanvasRenderer ) CanvasImageLayerRenderer.__proto__ = IntermediateCanvasRenderer;\n CanvasImageLayerRenderer.prototype = Object.create( IntermediateCanvasRenderer && IntermediateCanvasRenderer.prototype );\n CanvasImageLayerRenderer.prototype.constructor = CanvasImageLayerRenderer;\n\n /**\n * @inheritDoc\n */\n CanvasImageLayerRenderer.prototype.disposeInternal = function disposeInternal () {\n if (this.vectorRenderer_) {\n this.vectorRenderer_.dispose();\n }\n IntermediateCanvasRenderer.prototype.disposeInternal.call(this);\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageLayerRenderer.prototype.getImage = function getImage () {\n return !this.image_ ? null : this.image_.getImage();\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageLayerRenderer.prototype.getImageTransform = function getImageTransform () {\n return this.imageTransform_;\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageLayerRenderer.prototype.prepareFrame = function prepareFrame (frameState, layerState) {\n\n var pixelRatio = frameState.pixelRatio;\n var size = frameState.size;\n var viewState = frameState.viewState;\n var viewCenter = viewState.center;\n var viewResolution = viewState.resolution;\n\n var image;\n var imageLayer = /** @type {import(\"../../layer/Image.js\").default} */ (this.getLayer());\n var imageSource = /** @type {import(\"../../source/Image.js\").default} */ (imageLayer.getSource());\n\n var hints = frameState.viewHints;\n\n var vectorRenderer = this.vectorRenderer_;\n var renderedExtent = frameState.extent;\n if (!vectorRenderer && layerState.extent !== undefined) {\n renderedExtent = getIntersection(renderedExtent, layerState.extent);\n }\n\n if (!hints[ViewHint.ANIMATING] && !hints[ViewHint.INTERACTING] &&\n !isEmpty(renderedExtent)) {\n var projection = viewState.projection;\n if (!ENABLE_RASTER_REPROJECTION) {\n var sourceProjection = imageSource.getProjection();\n if (sourceProjection) {\n projection = sourceProjection;\n }\n }\n var skippedFeatures = this.skippedFeatures_;\n if (vectorRenderer) {\n var context = vectorRenderer.context;\n var imageFrameState = /** @type {import(\"../../PluggableMap.js\").FrameState} */ (assign({}, frameState, {\n size: [\n getWidth(renderedExtent) / viewResolution,\n getHeight(renderedExtent) / viewResolution\n ],\n viewState: /** @type {import(\"../../View.js\").State} */ (assign({}, frameState.viewState, {\n rotation: 0\n }))\n }));\n var newSkippedFeatures = Object.keys(imageFrameState.skippedFeatureUids).sort();\n image = new ImageCanvas(renderedExtent, viewResolution, pixelRatio, context.canvas, function(callback) {\n if (vectorRenderer.prepareFrame(imageFrameState, layerState) &&\n (vectorRenderer.replayGroupChanged ||\n !equals(skippedFeatures, newSkippedFeatures))) {\n context.canvas.width = imageFrameState.size[0] * pixelRatio;\n context.canvas.height = imageFrameState.size[1] * pixelRatio;\n vectorRenderer.compose(context, imageFrameState, layerState);\n skippedFeatures = newSkippedFeatures;\n callback();\n }\n });\n } else {\n image = imageSource.getImage(\n renderedExtent, viewResolution, pixelRatio, projection);\n }\n if (image && this.loadImage(image)) {\n this.image_ = image;\n this.skippedFeatures_ = skippedFeatures;\n }\n }\n\n if (this.image_) {\n image = this.image_;\n var imageExtent = image.getExtent();\n var imageResolution = image.getResolution();\n var imagePixelRatio = image.getPixelRatio();\n var scale = pixelRatio * imageResolution /\n (viewResolution * imagePixelRatio);\n var transform = composeTransform(this.imageTransform_,\n pixelRatio * size[0] / 2, pixelRatio * size[1] / 2,\n scale, scale,\n 0,\n imagePixelRatio * (imageExtent[0] - viewCenter[0]) / imageResolution,\n imagePixelRatio * (viewCenter[1] - imageExtent[3]) / imageResolution);\n composeTransform(this.coordinateToCanvasPixelTransform,\n pixelRatio * size[0] / 2 - transform[4], pixelRatio * size[1] / 2 - transform[5],\n pixelRatio / viewResolution, -pixelRatio / viewResolution,\n 0,\n -viewCenter[0], -viewCenter[1]);\n\n this.renderedResolution = imageResolution * pixelRatio / imagePixelRatio;\n }\n\n return !!this.image_;\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageLayerRenderer.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (coordinate, frameState, hitTolerance, callback) {\n if (this.vectorRenderer_) {\n return this.vectorRenderer_.forEachFeatureAtCoordinate(coordinate, frameState, hitTolerance, callback);\n } else {\n return IntermediateCanvasRenderer.prototype.forEachFeatureAtCoordinate.call(this, coordinate, frameState, hitTolerance, callback);\n }\n };\n\n return CanvasImageLayerRenderer;\n}(IntermediateCanvasRenderer));\n\n\n/**\n * Determine if this renderer handles the provided layer.\n * @param {import(\"../../layer/Layer.js\").default} layer The candidate layer.\n * @return {boolean} The renderer can render the layer.\n */\nCanvasImageLayerRenderer['handles'] = function(layer) {\n return layer.getType() === LayerType.IMAGE ||\n layer.getType() === LayerType.VECTOR &&\n /** @type {import(\"../../layer/Vector.js\").default} */ (layer).getRenderMode() === VectorRenderType.IMAGE;\n};\n\n\n/**\n * Create a layer renderer.\n * @param {import(\"../Map.js\").default} mapRenderer The map renderer.\n * @param {import(\"../../layer/Layer.js\").default} layer The layer to be rendererd.\n * @return {CanvasImageLayerRenderer} The layer renderer.\n */\nCanvasImageLayerRenderer['create'] = function(mapRenderer, layer) {\n return new CanvasImageLayerRenderer(/** @type {import(\"../../layer/Image.js\").default} */ (layer));\n};\n\n\nexport default CanvasImageLayerRenderer;\n\n//# sourceMappingURL=ImageLayer.js.map","/**\n * @module ol/TileRange\n */\n\n/**\n * A representation of a contiguous block of tiles. A tile range is specified\n * by its min/max tile coordinates and is inclusive of coordinates.\n */\nvar TileRange = function TileRange(minX, maxX, minY, maxY) {\n\n /**\n * @type {number}\n */\n this.minX = minX;\n\n /**\n * @type {number}\n */\n this.maxX = maxX;\n\n /**\n * @type {number}\n */\n this.minY = minY;\n\n /**\n * @type {number}\n */\n this.maxY = maxY;\n\n};\n\n/**\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @return {boolean} Contains tile coordinate.\n */\nTileRange.prototype.contains = function contains (tileCoord) {\n return this.containsXY(tileCoord[1], tileCoord[2]);\n};\n\n/**\n * @param {TileRange} tileRange Tile range.\n * @return {boolean} Contains.\n */\nTileRange.prototype.containsTileRange = function containsTileRange (tileRange) {\n return this.minX <= tileRange.minX && tileRange.maxX <= this.maxX &&\n this.minY <= tileRange.minY && tileRange.maxY <= this.maxY;\n};\n\n/**\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @return {boolean} Contains coordinate.\n */\nTileRange.prototype.containsXY = function containsXY (x, y) {\n return this.minX <= x && x <= this.maxX && this.minY <= y && y <= this.maxY;\n};\n\n/**\n * @param {TileRange} tileRange Tile range.\n * @return {boolean} Equals.\n */\nTileRange.prototype.equals = function equals (tileRange) {\n return this.minX == tileRange.minX && this.minY == tileRange.minY &&\n this.maxX == tileRange.maxX && this.maxY == tileRange.maxY;\n};\n\n/**\n * @param {TileRange} tileRange Tile range.\n */\nTileRange.prototype.extend = function extend (tileRange) {\n if (tileRange.minX < this.minX) {\n this.minX = tileRange.minX;\n }\n if (tileRange.maxX > this.maxX) {\n this.maxX = tileRange.maxX;\n }\n if (tileRange.minY < this.minY) {\n this.minY = tileRange.minY;\n }\n if (tileRange.maxY > this.maxY) {\n this.maxY = tileRange.maxY;\n }\n};\n\n/**\n * @return {number} Height.\n */\nTileRange.prototype.getHeight = function getHeight () {\n return this.maxY - this.minY + 1;\n};\n\n/**\n * @return {import(\"./size.js\").Size} Size.\n */\nTileRange.prototype.getSize = function getSize () {\n return [this.getWidth(), this.getHeight()];\n};\n\n/**\n * @return {number} Width.\n */\nTileRange.prototype.getWidth = function getWidth () {\n return this.maxX - this.minX + 1;\n};\n\n/**\n * @param {TileRange} tileRange Tile range.\n * @return {boolean} Intersects.\n */\nTileRange.prototype.intersects = function intersects (tileRange) {\n return this.minX <= tileRange.maxX &&\n this.maxX >= tileRange.minX &&\n this.minY <= tileRange.maxY &&\n this.maxY >= tileRange.minY;\n};\n\n\n/**\n * @param {number} minX Minimum X.\n * @param {number} maxX Maximum X.\n * @param {number} minY Minimum Y.\n * @param {number} maxY Maximum Y.\n * @param {TileRange=} tileRange TileRange.\n * @return {TileRange} Tile range.\n */\nexport function createOrUpdate(minX, maxX, minY, maxY, tileRange) {\n if (tileRange !== undefined) {\n tileRange.minX = minX;\n tileRange.maxX = maxX;\n tileRange.minY = minY;\n tileRange.maxY = maxY;\n return tileRange;\n } else {\n return new TileRange(minX, maxX, minY, maxY);\n }\n}\n\n\nexport default TileRange;\n\n//# sourceMappingURL=TileRange.js.map","/**\n * @module ol/renderer/canvas/TileLayer\n */\nimport {getUid} from '../../util.js';\nimport LayerType from '../../LayerType.js';\nimport TileRange from '../../TileRange.js';\nimport TileState from '../../TileState.js';\nimport ViewHint from '../../ViewHint.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {containsExtent, createEmpty, equals, getIntersection, isEmpty} from '../../extent.js';\nimport IntermediateCanvasRenderer from './IntermediateCanvas.js';\nimport {create as createTransform, compose as composeTransform} from '../../transform.js';\n\n/**\n * @classdesc\n * Canvas renderer for tile layers.\n * @api\n */\nvar CanvasTileLayerRenderer = /*@__PURE__*/(function (IntermediateCanvasRenderer) {\n function CanvasTileLayerRenderer(tileLayer, opt_noContext) {\n\n IntermediateCanvasRenderer.call(this, tileLayer);\n\n /**\n * @protected\n * @type {CanvasRenderingContext2D}\n */\n this.context = opt_noContext ? null : createCanvasContext2D();\n\n /**\n * @private\n * @type {number}\n */\n this.oversampling_;\n\n /**\n * @private\n * @type {import(\"../../extent.js\").Extent}\n */\n this.renderedExtent_ = null;\n\n /**\n * @protected\n * @type {number}\n */\n this.renderedRevision;\n\n /**\n * @protected\n * @type {!Array<import(\"../../Tile.js\").default>}\n */\n this.renderedTiles = [];\n\n /**\n * @private\n * @type {boolean}\n */\n this.newTiles_ = false;\n\n /**\n * @protected\n * @type {import(\"../../extent.js\").Extent}\n */\n this.tmpExtent = createEmpty();\n\n /**\n * @private\n * @type {import(\"../../TileRange.js\").default}\n */\n this.tmpTileRange_ = new TileRange(0, 0, 0, 0);\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.imageTransform_ = createTransform();\n\n /**\n * @protected\n * @type {number}\n */\n this.zDirection = 0;\n\n }\n\n if ( IntermediateCanvasRenderer ) CanvasTileLayerRenderer.__proto__ = IntermediateCanvasRenderer;\n CanvasTileLayerRenderer.prototype = Object.create( IntermediateCanvasRenderer && IntermediateCanvasRenderer.prototype );\n CanvasTileLayerRenderer.prototype.constructor = CanvasTileLayerRenderer;\n\n /**\n * @private\n * @param {import(\"../../Tile.js\").default} tile Tile.\n * @return {boolean} Tile is drawable.\n */\n CanvasTileLayerRenderer.prototype.isDrawableTile_ = function isDrawableTile_ (tile) {\n var tileLayer = /** @type {import(\"../../layer/Tile.js\").default} */ (this.getLayer());\n var tileState = tile.getState();\n var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();\n return tileState == TileState.LOADED ||\n tileState == TileState.EMPTY ||\n tileState == TileState.ERROR && !useInterimTilesOnError;\n };\n\n /**\n * @param {number} z Tile coordinate z.\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../../proj/Projection.js\").default} projection Projection.\n * @return {!import(\"../../Tile.js\").default} Tile.\n */\n CanvasTileLayerRenderer.prototype.getTile = function getTile (z, x, y, pixelRatio, projection) {\n var tileLayer = /** @type {import(\"../../layer/Tile.js\").default} */ (this.getLayer());\n var tileSource = /** @type {import(\"../../source/Tile.js\").default} */ (tileLayer.getSource());\n var tile = tileSource.getTile(z, x, y, pixelRatio, projection);\n if (tile.getState() == TileState.ERROR) {\n if (!tileLayer.getUseInterimTilesOnError()) {\n // When useInterimTilesOnError is false, we consider the error tile as loaded.\n tile.setState(TileState.LOADED);\n } else if (tileLayer.getPreload() > 0) {\n // Preloaded tiles for lower resolutions might have finished loading.\n this.newTiles_ = true;\n }\n }\n if (!this.isDrawableTile_(tile)) {\n tile = tile.getInterimTile();\n }\n return tile;\n };\n\n /**\n * @inheritDoc\n */\n CanvasTileLayerRenderer.prototype.prepareFrame = function prepareFrame (frameState, layerState) {\n\n var pixelRatio = frameState.pixelRatio;\n var size = frameState.size;\n var viewState = frameState.viewState;\n var projection = viewState.projection;\n var viewResolution = viewState.resolution;\n var viewCenter = viewState.center;\n\n var tileLayer = /** @type {import(\"../../layer/Tile.js\").default} */ (this.getLayer());\n var tileSource = /** @type {import(\"../../source/Tile.js\").default} */ (tileLayer.getSource());\n var sourceRevision = tileSource.getRevision();\n var tileGrid = tileSource.getTileGridForProjection(projection);\n var z = tileGrid.getZForResolution(viewResolution, this.zDirection);\n var tileResolution = tileGrid.getResolution(z);\n var oversampling = Math.round(viewResolution / tileResolution) || 1;\n var extent = frameState.extent;\n\n if (layerState.extent !== undefined) {\n extent = getIntersection(extent, layerState.extent);\n }\n if (isEmpty(extent)) {\n // Return false to prevent the rendering of the layer.\n return false;\n }\n\n var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);\n var imageExtent = tileGrid.getTileRangeExtent(z, tileRange);\n\n var tilePixelRatio = tileSource.getTilePixelRatio(pixelRatio);\n\n /**\n * @type {Object<number, Object<string, import(\"../../Tile.js\").default>>}\n */\n var tilesToDrawByZ = {};\n tilesToDrawByZ[z] = {};\n\n var findLoadedTiles = this.createLoadedTileFinder(\n tileSource, projection, tilesToDrawByZ);\n\n var hints = frameState.viewHints;\n var animatingOrInteracting = hints[ViewHint.ANIMATING] || hints[ViewHint.INTERACTING];\n\n var tmpExtent = this.tmpExtent;\n var tmpTileRange = this.tmpTileRange_;\n this.newTiles_ = false;\n var tile, x, y;\n for (x = tileRange.minX; x <= tileRange.maxX; ++x) {\n for (y = tileRange.minY; y <= tileRange.maxY; ++y) {\n if (Date.now() - frameState.time > 16 && animatingOrInteracting) {\n continue;\n }\n tile = this.getTile(z, x, y, pixelRatio, projection);\n if (this.isDrawableTile_(tile)) {\n var uid = getUid(this);\n if (tile.getState() == TileState.LOADED) {\n tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;\n var inTransition = tile.inTransition(uid);\n if (!this.newTiles_ && (inTransition || this.renderedTiles.indexOf(tile) === -1)) {\n this.newTiles_ = true;\n }\n }\n if (tile.getAlpha(uid, frameState.time) === 1) {\n // don't look for alt tiles if alpha is 1\n continue;\n }\n }\n\n var childTileRange = tileGrid.getTileCoordChildTileRange(\n tile.tileCoord, tmpTileRange, tmpExtent);\n var covered = false;\n if (childTileRange) {\n covered = findLoadedTiles(z + 1, childTileRange);\n }\n if (!covered) {\n tileGrid.forEachTileCoordParentTileRange(\n tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);\n }\n\n }\n }\n\n var renderedResolution = tileResolution * pixelRatio / tilePixelRatio * oversampling;\n if (!(this.renderedResolution && Date.now() - frameState.time > 16 && animatingOrInteracting) && (\n this.newTiles_ ||\n !(this.renderedExtent_ && containsExtent(this.renderedExtent_, extent)) ||\n this.renderedRevision != sourceRevision ||\n oversampling != this.oversampling_ ||\n !animatingOrInteracting && renderedResolution != this.renderedResolution\n )) {\n\n var context = this.context;\n if (context) {\n var tilePixelSize = tileSource.getTilePixelSize(z, pixelRatio, projection);\n var width = Math.round(tileRange.getWidth() * tilePixelSize[0] / oversampling);\n var height = Math.round(tileRange.getHeight() * tilePixelSize[1] / oversampling);\n var canvas = context.canvas;\n if (canvas.width != width || canvas.height != height) {\n this.oversampling_ = oversampling;\n canvas.width = width;\n canvas.height = height;\n } else {\n if ((this.renderedExtent_ && !equals(imageExtent, this.renderedExtent_)) ||\n this.renderedRevision != sourceRevision) {\n context.clearRect(0, 0, width, height);\n }\n oversampling = this.oversampling_;\n }\n }\n\n this.renderedTiles.length = 0;\n /** @type {Array<number>} */\n var zs = Object.keys(tilesToDrawByZ).map(Number);\n zs.sort(function(a, b) {\n if (a === z) {\n return 1;\n } else if (b === z) {\n return -1;\n } else {\n return a > b ? 1 : a < b ? -1 : 0;\n }\n });\n var currentResolution, currentScale, currentTilePixelSize, currentZ, i, ii;\n var tileExtent, tileGutter, tilesToDraw, w, h;\n for (i = 0, ii = zs.length; i < ii; ++i) {\n currentZ = zs[i];\n currentTilePixelSize = tileSource.getTilePixelSize(currentZ, pixelRatio, projection);\n currentResolution = tileGrid.getResolution(currentZ);\n currentScale = currentResolution / tileResolution;\n tileGutter = tilePixelRatio * tileSource.getGutterForProjection(projection);\n tilesToDraw = tilesToDrawByZ[currentZ];\n for (var tileCoordKey in tilesToDraw) {\n tile = tilesToDraw[tileCoordKey];\n tileExtent = tileGrid.getTileCoordExtent(tile.getTileCoord(), tmpExtent);\n x = (tileExtent[0] - imageExtent[0]) / tileResolution * tilePixelRatio / oversampling;\n y = (imageExtent[3] - tileExtent[3]) / tileResolution * tilePixelRatio / oversampling;\n w = currentTilePixelSize[0] * currentScale / oversampling;\n h = currentTilePixelSize[1] * currentScale / oversampling;\n this.drawTileImage(tile, frameState, layerState, x, y, w, h, tileGutter, z === currentZ);\n this.renderedTiles.push(tile);\n }\n }\n\n this.renderedRevision = sourceRevision;\n this.renderedResolution = tileResolution * pixelRatio / tilePixelRatio * oversampling;\n this.renderedExtent_ = imageExtent;\n }\n\n var scale = this.renderedResolution / viewResolution;\n var transform = composeTransform(this.imageTransform_,\n pixelRatio * size[0] / 2, pixelRatio * size[1] / 2,\n scale, scale,\n 0,\n (this.renderedExtent_[0] - viewCenter[0]) / this.renderedResolution * pixelRatio,\n (viewCenter[1] - this.renderedExtent_[3]) / this.renderedResolution * pixelRatio);\n composeTransform(this.coordinateToCanvasPixelTransform,\n pixelRatio * size[0] / 2 - transform[4], pixelRatio * size[1] / 2 - transform[5],\n pixelRatio / viewResolution, -pixelRatio / viewResolution,\n 0,\n -viewCenter[0], -viewCenter[1]);\n\n\n this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);\n this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio,\n projection, extent, z, tileLayer.getPreload());\n this.scheduleExpireCache(frameState, tileSource);\n\n return this.renderedTiles.length > 0;\n };\n\n /**\n * @param {import(\"../../Tile.js\").default} tile Tile.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../layer/Layer.js\").State} layerState Layer state.\n * @param {number} x Left of the tile.\n * @param {number} y Top of the tile.\n * @param {number} w Width of the tile.\n * @param {number} h Height of the tile.\n * @param {number} gutter Tile gutter.\n * @param {boolean} transition Apply an alpha transition.\n */\n CanvasTileLayerRenderer.prototype.drawTileImage = function drawTileImage (tile, frameState, layerState, x, y, w, h, gutter, transition) {\n var image = this.getTileImage(tile);\n if (!image) {\n return;\n }\n var uid = getUid(this);\n var alpha = transition ? tile.getAlpha(uid, frameState.time) : 1;\n var tileLayer = /** @type {import(\"../../layer/Tile.js\").default} */ (this.getLayer());\n var tileSource = /** @type {import(\"../../source/Tile.js\").default} */ (tileLayer.getSource());\n if (alpha === 1 && !tileSource.getOpaque(frameState.viewState.projection)) {\n this.context.clearRect(x, y, w, h);\n }\n var alphaChanged = alpha !== this.context.globalAlpha;\n if (alphaChanged) {\n this.context.save();\n this.context.globalAlpha = alpha;\n }\n this.context.drawImage(image, gutter, gutter,\n image.width - 2 * gutter, image.height - 2 * gutter, x, y, w, h);\n\n if (alphaChanged) {\n this.context.restore();\n }\n if (alpha !== 1) {\n frameState.animate = true;\n } else if (transition) {\n tile.endTransition(uid);\n }\n };\n\n /**\n * @inheritDoc\n */\n CanvasTileLayerRenderer.prototype.getImage = function getImage () {\n var context = this.context;\n return context ? context.canvas : null;\n };\n\n /**\n * @inheritDoc\n */\n CanvasTileLayerRenderer.prototype.getImageTransform = function getImageTransform () {\n return this.imageTransform_;\n };\n\n /**\n * Get the image from a tile.\n * @param {import(\"../../Tile.js\").default} tile Tile.\n * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n * @protected\n */\n CanvasTileLayerRenderer.prototype.getTileImage = function getTileImage (tile) {\n return /** @type {import(\"../../ImageTile.js\").default} */ (tile).getImage();\n };\n\n return CanvasTileLayerRenderer;\n}(IntermediateCanvasRenderer));\n\n\n/**\n * Determine if this renderer handles the provided layer.\n * @param {import(\"../../layer/Layer.js\").default} layer The candidate layer.\n * @return {boolean} The renderer can render the layer.\n */\nCanvasTileLayerRenderer['handles'] = function(layer) {\n return layer.getType() === LayerType.TILE;\n};\n\n\n/**\n * Create a layer renderer.\n * @param {import(\"../Map.js\").default} mapRenderer The map renderer.\n * @param {import(\"../../layer/Layer.js\").default} layer The layer to be rendererd.\n * @return {CanvasTileLayerRenderer} The layer renderer.\n */\nCanvasTileLayerRenderer['create'] = function(mapRenderer, layer) {\n return new CanvasTileLayerRenderer(/** @type {import(\"../../layer/Tile.js\").default} */ (layer));\n};\n\n\n/**\n * @function\n * @return {import(\"../../layer/Tile.js\").default|import(\"../../layer/VectorTile.js\").default}\n */\nCanvasTileLayerRenderer.prototype.getLayer;\n\n\nexport default CanvasTileLayerRenderer;\n\n//# sourceMappingURL=TileLayer.js.map","/**\n * @module ol/render/ReplayGroup\n */\nimport {abstract} from '../util.js';\n\n/**\n * Base class for replay groups.\n */\nvar ReplayGroup = function ReplayGroup () {};\n\nReplayGroup.prototype.getReplay = function getReplay (zIndex, replayType) {\n return abstract();\n};\n\n/**\n * @abstract\n * @return {boolean} Is empty.\n */\nReplayGroup.prototype.isEmpty = function isEmpty () {\n return abstract();\n};\n\n/**\n * @abstract\n * @param {boolean} group Group with previous replay\n * @return {Array<*>} The resulting instruction group\n */\nReplayGroup.prototype.addDeclutter = function addDeclutter (group) {\n return abstract();\n};\n\nexport default ReplayGroup;\n\n//# sourceMappingURL=ReplayGroup.js.map","/**\n * @module ol/render/ReplayType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n CIRCLE: 'Circle',\n DEFAULT: 'Default',\n IMAGE: 'Image',\n LINE_STRING: 'LineString',\n POLYGON: 'Polygon',\n TEXT: 'Text'\n};\n\n//# sourceMappingURL=ReplayType.js.map","/**\n * @module ol/geom/flat/length\n */\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Length.\n */\nexport function lineStringLength(flatCoordinates, offset, end, stride) {\n var x1 = flatCoordinates[offset];\n var y1 = flatCoordinates[offset + 1];\n var length = 0;\n for (var i = offset + stride; i < end; i += stride) {\n var x2 = flatCoordinates[i];\n var y2 = flatCoordinates[i + 1];\n length += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));\n x1 = x2;\n y1 = y2;\n }\n return length;\n}\n\n\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Perimeter.\n */\nexport function linearRingLength(flatCoordinates, offset, end, stride) {\n var perimeter = lineStringLength(flatCoordinates, offset, end, stride);\n var dx = flatCoordinates[end - stride] - flatCoordinates[offset];\n var dy = flatCoordinates[end - stride + 1] - flatCoordinates[offset + 1];\n perimeter += Math.sqrt(dx * dx + dy * dy);\n return perimeter;\n}\n\n//# sourceMappingURL=length.js.map","/**\n * @module ol/geom/flat/textpath\n */\nimport {lerp} from '../../math.js';\n\n\n/**\n * @param {Array<number>} flatCoordinates Path to put text on.\n * @param {number} offset Start offset of the `flatCoordinates`.\n * @param {number} end End offset of the `flatCoordinates`.\n * @param {number} stride Stride.\n * @param {string} text Text to place on the path.\n * @param {function(string):number} measure Measure function returning the\n * width of the character passed as 1st argument.\n * @param {number} startM m along the path where the text starts.\n * @param {number} maxAngle Max angle between adjacent chars in radians.\n * @return {Array<Array<*>>} The result array of null if `maxAngle` was\n * exceeded. Entries of the array are x, y, anchorX, angle, chunk.\n */\nexport function drawTextOnPath(\n flatCoordinates, offset, end, stride, text, measure, startM, maxAngle) {\n var result = [];\n\n // Keep text upright\n var reverse = flatCoordinates[offset] > flatCoordinates[end - stride];\n\n var numChars = text.length;\n\n var x1 = flatCoordinates[offset];\n var y1 = flatCoordinates[offset + 1];\n offset += stride;\n var x2 = flatCoordinates[offset];\n var y2 = flatCoordinates[offset + 1];\n var segmentM = 0;\n var segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));\n\n var chunk = '';\n var chunkLength = 0;\n var data, index, previousAngle;\n for (var i = 0; i < numChars; ++i) {\n index = reverse ? numChars - i - 1 : i;\n var char = text.charAt(index);\n chunk = reverse ? char + chunk : chunk + char;\n var charLength = measure(chunk) - chunkLength;\n chunkLength += charLength;\n var charM = startM + charLength / 2;\n while (offset < end - stride && segmentM + segmentLength < charM) {\n x1 = x2;\n y1 = y2;\n offset += stride;\n x2 = flatCoordinates[offset];\n y2 = flatCoordinates[offset + 1];\n segmentM += segmentLength;\n segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));\n }\n var segmentPos = charM - segmentM;\n var angle = Math.atan2(y2 - y1, x2 - x1);\n if (reverse) {\n angle += angle > 0 ? -Math.PI : Math.PI;\n }\n if (previousAngle !== undefined) {\n var delta = angle - previousAngle;\n delta += (delta > Math.PI) ? -2 * Math.PI : (delta < -Math.PI) ? 2 * Math.PI : 0;\n if (Math.abs(delta) > maxAngle) {\n return null;\n }\n }\n var interpolate = segmentPos / segmentLength;\n var x = lerp(x1, x2, interpolate);\n var y = lerp(y1, y2, interpolate);\n if (previousAngle == angle) {\n if (reverse) {\n data[0] = x;\n data[1] = y;\n data[2] = charLength / 2;\n }\n data[4] = chunk;\n } else {\n chunk = char;\n chunkLength = charLength;\n data = [x, y, charLength / 2, angle, chunk];\n if (reverse) {\n result.unshift(data);\n } else {\n result.push(data);\n }\n previousAngle = angle;\n }\n startM += charLength;\n }\n return result;\n}\n\n//# sourceMappingURL=textpath.js.map","/**\n * @module ol/render/canvas/Instruction\n */\n\n/**\n * @enum {number}\n */\nvar Instruction = {\n BEGIN_GEOMETRY: 0,\n BEGIN_PATH: 1,\n CIRCLE: 2,\n CLOSE_PATH: 3,\n CUSTOM: 4,\n DRAW_CHARS: 5,\n DRAW_IMAGE: 6,\n END_GEOMETRY: 7,\n FILL: 8,\n MOVE_TO_LINE_TO: 9,\n SET_FILL_STYLE: 10,\n SET_STROKE_STYLE: 11,\n STROKE: 12\n};\n\n\n/**\n * @type {Array<Instruction>}\n */\nexport var fillInstruction = [Instruction.FILL];\n\n\n/**\n * @type {Array<Instruction>}\n */\nexport var strokeInstruction = [Instruction.STROKE];\n\n\n/**\n * @type {Array<Instruction>}\n */\nexport var beginPathInstruction = [Instruction.BEGIN_PATH];\n\n\n/**\n * @type {Array<Instruction>}\n */\nexport var closePathInstruction = [Instruction.CLOSE_PATH];\n\n\nexport default Instruction;\n\n//# sourceMappingURL=Instruction.js.map","/**\n * @module ol/render/replay\n */\nimport ReplayType from './ReplayType.js';\n\n\n/**\n * @const\n * @type {Array<ReplayType>}\n */\nexport var ORDER = [\n ReplayType.POLYGON,\n ReplayType.CIRCLE,\n ReplayType.LINE_STRING,\n ReplayType.IMAGE,\n ReplayType.TEXT,\n ReplayType.DEFAULT\n];\n\n/**\n * @const\n * @enum {number}\n */\nexport var TEXT_ALIGN = {};\nTEXT_ALIGN['left'] = 0;\nTEXT_ALIGN['end'] = 0;\nTEXT_ALIGN['center'] = 0.5;\nTEXT_ALIGN['right'] = 1;\nTEXT_ALIGN['start'] = 1;\nTEXT_ALIGN['top'] = 0;\nTEXT_ALIGN['middle'] = 0.5;\nTEXT_ALIGN['hanging'] = 0.2;\nTEXT_ALIGN['alphabetic'] = 0.8;\nTEXT_ALIGN['ideographic'] = 0.8;\nTEXT_ALIGN['bottom'] = 1;\n\n//# sourceMappingURL=replay.js.map","/**\n * @module ol/render/canvas/Replay\n */\nimport {getUid} from '../../util.js';\nimport {equals, reverseSubArray} from '../../array.js';\nimport {asColorLike} from '../../colorlike.js';\nimport {buffer, clone, coordinateRelationship, createEmpty, createOrUpdate,\n createOrUpdateEmpty, extend, extendCoordinate, intersects} from '../../extent.js';\nimport Relationship from '../../extent/Relationship.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport {inflateCoordinates, inflateCoordinatesArray, inflateMultiCoordinatesArray} from '../../geom/flat/inflate.js';\nimport {lineStringLength} from '../../geom/flat/length.js';\nimport {drawTextOnPath} from '../../geom/flat/textpath.js';\nimport {transform2D} from '../../geom/flat/transform.js';\nimport {CANVAS_LINE_DASH} from '../../has.js';\nimport {isEmpty} from '../../obj.js';\nimport VectorContext from '../VectorContext.js';\nimport {drawImage, resetTransform, defaultPadding, defaultFillStyle, defaultStrokeStyle,\n defaultMiterLimit, defaultLineWidth, defaultLineJoin, defaultLineDashOffset,\n defaultLineDash, defaultLineCap} from '../canvas.js';\nimport CanvasInstruction from './Instruction.js';\nimport {TEXT_ALIGN} from '../replay.js';\nimport {\n create as createTransform,\n compose as composeTransform,\n apply as applyTransform,\n setFromArray as transformSetFromArray\n} from '../../transform.js';\n\n\n/**\n * @type {import(\"../../extent.js\").Extent}\n */\nvar tmpExtent = createEmpty();\n\n\n/**\n * @type {!import(\"../../transform.js\").Transform}\n */\nvar tmpTransform = createTransform();\n\n\nvar CanvasReplay = /*@__PURE__*/(function (VectorContext) {\n function CanvasReplay(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {\n VectorContext.call(this);\n\n /**\n * @type {?}\n */\n this.declutterTree = declutterTree;\n\n /**\n * @protected\n * @type {number}\n */\n this.tolerance = tolerance;\n\n /**\n * @protected\n * @const\n * @type {import(\"../../extent.js\").Extent}\n */\n this.maxExtent = maxExtent;\n\n /**\n * @protected\n * @type {boolean}\n */\n this.overlaps = overlaps;\n\n /**\n * @protected\n * @type {number}\n */\n this.pixelRatio = pixelRatio;\n\n /**\n * @protected\n * @type {number}\n */\n this.maxLineWidth = 0;\n\n /**\n * @protected\n * @const\n * @type {number}\n */\n this.resolution = resolution;\n\n /**\n * @private\n * @type {boolean}\n */\n this.alignFill_;\n\n /**\n * @private\n * @type {Array<*>}\n */\n this.beginGeometryInstruction1_ = null;\n\n /**\n * @private\n * @type {Array<*>}\n */\n this.beginGeometryInstruction2_ = null;\n\n /**\n * @private\n * @type {import(\"../../extent.js\").Extent}\n */\n this.bufferedMaxExtent_ = null;\n\n /**\n * @protected\n * @type {Array<*>}\n */\n this.instructions = [];\n\n /**\n * @protected\n * @type {Array<number>}\n */\n this.coordinates = [];\n\n /**\n * @private\n * @type {!Object<number,import(\"../../coordinate.js\").Coordinate|Array<import(\"../../coordinate.js\").Coordinate>|Array<Array<import(\"../../coordinate.js\").Coordinate>>>}\n */\n this.coordinateCache_ = {};\n\n /**\n * @private\n * @type {!import(\"../../transform.js\").Transform}\n */\n this.renderedTransform_ = createTransform();\n\n /**\n * @protected\n * @type {Array<*>}\n */\n this.hitDetectionInstructions = [];\n\n /**\n * @private\n * @type {Array<number>}\n */\n this.pixelCoordinates_ = null;\n\n /**\n * @protected\n * @type {import(\"../canvas.js\").FillStrokeState}\n */\n this.state = /** @type {import(\"../canvas.js\").FillStrokeState} */ ({});\n\n /**\n * @private\n * @type {number}\n */\n this.viewRotation_ = 0;\n\n }\n\n if ( VectorContext ) CanvasReplay.__proto__ = VectorContext;\n CanvasReplay.prototype = Object.create( VectorContext && VectorContext.prototype );\n CanvasReplay.prototype.constructor = CanvasReplay;\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../coordinate.js\").Coordinate} p1 1st point of the background box.\n * @param {import(\"../../coordinate.js\").Coordinate} p2 2nd point of the background box.\n * @param {import(\"../../coordinate.js\").Coordinate} p3 3rd point of the background box.\n * @param {import(\"../../coordinate.js\").Coordinate} p4 4th point of the background box.\n * @param {Array<*>} fillInstruction Fill instruction.\n * @param {Array<*>} strokeInstruction Stroke instruction.\n */\n CanvasReplay.prototype.replayTextBackground_ = function replayTextBackground_ (context, p1, p2, p3, p4, fillInstruction, strokeInstruction) {\n context.beginPath();\n context.moveTo.apply(context, p1);\n context.lineTo.apply(context, p2);\n context.lineTo.apply(context, p3);\n context.lineTo.apply(context, p4);\n context.lineTo.apply(context, p1);\n if (fillInstruction) {\n this.alignFill_ = /** @type {boolean} */ (fillInstruction[2]);\n this.fill_(context);\n }\n if (strokeInstruction) {\n this.setStrokeStyle_(context, /** @type {Array<*>} */ (strokeInstruction));\n context.stroke();\n }\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} image Image.\n * @param {number} anchorX Anchor X.\n * @param {number} anchorY Anchor Y.\n * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n * @param {number} height Height.\n * @param {number} opacity Opacity.\n * @param {number} originX Origin X.\n * @param {number} originY Origin Y.\n * @param {number} rotation Rotation.\n * @param {number} scale Scale.\n * @param {boolean} snapToPixel Snap to pixel.\n * @param {number} width Width.\n * @param {Array<number>} padding Padding.\n * @param {Array<*>} fillInstruction Fill instruction.\n * @param {Array<*>} strokeInstruction Stroke instruction.\n */\n CanvasReplay.prototype.replayImage_ = function replayImage_ (\n context,\n x,\n y,\n image,\n anchorX,\n anchorY,\n declutterGroup,\n height,\n opacity,\n originX,\n originY,\n rotation,\n scale,\n snapToPixel,\n width,\n padding,\n fillInstruction,\n strokeInstruction\n ) {\n var fillStroke = fillInstruction || strokeInstruction;\n anchorX *= scale;\n anchorY *= scale;\n x -= anchorX;\n y -= anchorY;\n\n var w = (width + originX > image.width) ? image.width - originX : width;\n var h = (height + originY > image.height) ? image.height - originY : height;\n var boxW = padding[3] + w * scale + padding[1];\n var boxH = padding[0] + h * scale + padding[2];\n var boxX = x - padding[3];\n var boxY = y - padding[0];\n\n /** @type {import(\"../../coordinate.js\").Coordinate} */\n var p1;\n /** @type {import(\"../../coordinate.js\").Coordinate} */\n var p2;\n /** @type {import(\"../../coordinate.js\").Coordinate} */\n var p3;\n /** @type {import(\"../../coordinate.js\").Coordinate} */\n var p4;\n if (fillStroke || rotation !== 0) {\n p1 = [boxX, boxY];\n p2 = [boxX + boxW, boxY];\n p3 = [boxX + boxW, boxY + boxH];\n p4 = [boxX, boxY + boxH];\n }\n\n var transform = null;\n if (rotation !== 0) {\n var centerX = x + anchorX;\n var centerY = y + anchorY;\n transform = composeTransform(tmpTransform, centerX, centerY, 1, 1, rotation, -centerX, -centerY);\n\n createOrUpdateEmpty(tmpExtent);\n extendCoordinate(tmpExtent, applyTransform(tmpTransform, p1));\n extendCoordinate(tmpExtent, applyTransform(tmpTransform, p2));\n extendCoordinate(tmpExtent, applyTransform(tmpTransform, p3));\n extendCoordinate(tmpExtent, applyTransform(tmpTransform, p4));\n } else {\n createOrUpdate(boxX, boxY, boxX + boxW, boxY + boxH, tmpExtent);\n }\n var canvas = context.canvas;\n var strokePadding = strokeInstruction ? (strokeInstruction[2] * scale / 2) : 0;\n var intersects =\n tmpExtent[0] - strokePadding <= canvas.width && tmpExtent[2] + strokePadding >= 0 &&\n tmpExtent[1] - strokePadding <= canvas.height && tmpExtent[3] + strokePadding >= 0;\n\n if (snapToPixel) {\n x = Math.round(x);\n y = Math.round(y);\n }\n\n if (declutterGroup) {\n if (!intersects && declutterGroup[4] == 1) {\n return;\n }\n extend(declutterGroup, tmpExtent);\n var declutterArgs = intersects ?\n [context, transform ? transform.slice(0) : null, opacity, image, originX, originY, w, h, x, y, scale] :\n null;\n if (declutterArgs && fillStroke) {\n declutterArgs.push(fillInstruction, strokeInstruction, p1, p2, p3, p4);\n }\n declutterGroup.push(declutterArgs);\n } else if (intersects) {\n if (fillStroke) {\n this.replayTextBackground_(context, p1, p2, p3, p4,\n /** @type {Array<*>} */ (fillInstruction),\n /** @type {Array<*>} */ (strokeInstruction));\n }\n drawImage(context, transform, opacity, image, originX, originY, w, h, x, y, scale);\n }\n };\n\n /**\n * @protected\n * @param {Array<number>} dashArray Dash array.\n * @return {Array<number>} Dash array with pixel ratio applied\n */\n CanvasReplay.prototype.applyPixelRatio = function applyPixelRatio (dashArray) {\n var pixelRatio = this.pixelRatio;\n return pixelRatio == 1 ? dashArray : dashArray.map(function(dash) {\n return dash * pixelRatio;\n });\n };\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {boolean} closed Last input coordinate equals first.\n * @param {boolean} skipFirst Skip first coordinate.\n * @protected\n * @return {number} My end.\n */\n CanvasReplay.prototype.appendFlatCoordinates = function appendFlatCoordinates (flatCoordinates, offset, end, stride, closed, skipFirst) {\n\n var myEnd = this.coordinates.length;\n var extent = this.getBufferedMaxExtent();\n if (skipFirst) {\n offset += stride;\n }\n var lastCoord = [flatCoordinates[offset], flatCoordinates[offset + 1]];\n var nextCoord = [NaN, NaN];\n var skipped = true;\n\n var i, lastRel, nextRel;\n for (i = offset + stride; i < end; i += stride) {\n nextCoord[0] = flatCoordinates[i];\n nextCoord[1] = flatCoordinates[i + 1];\n nextRel = coordinateRelationship(extent, nextCoord);\n if (nextRel !== lastRel) {\n if (skipped) {\n this.coordinates[myEnd++] = lastCoord[0];\n this.coordinates[myEnd++] = lastCoord[1];\n }\n this.coordinates[myEnd++] = nextCoord[0];\n this.coordinates[myEnd++] = nextCoord[1];\n skipped = false;\n } else if (nextRel === Relationship.INTERSECTING) {\n this.coordinates[myEnd++] = nextCoord[0];\n this.coordinates[myEnd++] = nextCoord[1];\n skipped = false;\n } else {\n skipped = true;\n }\n lastCoord[0] = nextCoord[0];\n lastCoord[1] = nextCoord[1];\n lastRel = nextRel;\n }\n\n // Last coordinate equals first or only one point to append:\n if ((closed && skipped) || i === offset + stride) {\n this.coordinates[myEnd++] = lastCoord[0];\n this.coordinates[myEnd++] = lastCoord[1];\n }\n return myEnd;\n };\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {Array<number>} replayEnds Replay ends.\n * @return {number} Offset.\n */\n CanvasReplay.prototype.drawCustomCoordinates_ = function drawCustomCoordinates_ (flatCoordinates, offset, ends, stride, replayEnds) {\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n var end = ends[i];\n var replayEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);\n replayEnds.push(replayEnd);\n offset = end;\n }\n return offset;\n };\n\n /**\n * @inheritDoc.\n */\n CanvasReplay.prototype.drawCustom = function drawCustom (geometry, feature, renderer) {\n this.beginGeometry(geometry, feature);\n var type = geometry.getType();\n var stride = geometry.getStride();\n var replayBegin = this.coordinates.length;\n var flatCoordinates, replayEnd, replayEnds, replayEndss;\n var offset;\n if (type == GeometryType.MULTI_POLYGON) {\n geometry = /** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry);\n flatCoordinates = geometry.getOrientedFlatCoordinates();\n replayEndss = [];\n var endss = geometry.getEndss();\n offset = 0;\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n var myEnds = [];\n offset = this.drawCustomCoordinates_(flatCoordinates, offset, endss[i], stride, myEnds);\n replayEndss.push(myEnds);\n }\n this.instructions.push([CanvasInstruction.CUSTOM,\n replayBegin, replayEndss, geometry, renderer, inflateMultiCoordinatesArray]);\n } else if (type == GeometryType.POLYGON || type == GeometryType.MULTI_LINE_STRING) {\n replayEnds = [];\n flatCoordinates = (type == GeometryType.POLYGON) ?\n /** @type {import(\"../../geom/Polygon.js\").default} */ (geometry).getOrientedFlatCoordinates() :\n geometry.getFlatCoordinates();\n offset = this.drawCustomCoordinates_(flatCoordinates, 0,\n /** @type {import(\"../../geom/Polygon.js\").default|import(\"../../geom/MultiLineString.js\").default} */ (geometry).getEnds(),\n stride, replayEnds);\n this.instructions.push([CanvasInstruction.CUSTOM,\n replayBegin, replayEnds, geometry, renderer, inflateCoordinatesArray]);\n } else if (type == GeometryType.LINE_STRING || type == GeometryType.MULTI_POINT) {\n flatCoordinates = geometry.getFlatCoordinates();\n replayEnd = this.appendFlatCoordinates(\n flatCoordinates, 0, flatCoordinates.length, stride, false, false);\n this.instructions.push([CanvasInstruction.CUSTOM,\n replayBegin, replayEnd, geometry, renderer, inflateCoordinates]);\n } else if (type == GeometryType.POINT) {\n flatCoordinates = geometry.getFlatCoordinates();\n this.coordinates.push(flatCoordinates[0], flatCoordinates[1]);\n replayEnd = this.coordinates.length;\n this.instructions.push([CanvasInstruction.CUSTOM,\n replayBegin, replayEnd, geometry, renderer]);\n }\n this.endGeometry(geometry, feature);\n };\n\n /**\n * @protected\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry Geometry.\n * @param {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} feature Feature.\n */\n CanvasReplay.prototype.beginGeometry = function beginGeometry (geometry, feature) {\n this.beginGeometryInstruction1_ = [CanvasInstruction.BEGIN_GEOMETRY, feature, 0];\n this.instructions.push(this.beginGeometryInstruction1_);\n this.beginGeometryInstruction2_ = [CanvasInstruction.BEGIN_GEOMETRY, feature, 0];\n this.hitDetectionInstructions.push(this.beginGeometryInstruction2_);\n };\n\n /**\n * FIXME empty description for jsdoc\n */\n CanvasReplay.prototype.finish = function finish () {};\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} context Context.\n */\n CanvasReplay.prototype.fill_ = function fill_ (context) {\n if (this.alignFill_) {\n var origin = applyTransform(this.renderedTransform_, [0, 0]);\n var repeatSize = 512 * this.pixelRatio;\n context.translate(origin[0] % repeatSize, origin[1] % repeatSize);\n context.rotate(this.viewRotation_);\n }\n context.fill();\n if (this.alignFill_) {\n context.setTransform.apply(context, resetTransform);\n }\n };\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} context Context.\n * @param {Array<*>} instruction Instruction.\n */\n CanvasReplay.prototype.setStrokeStyle_ = function setStrokeStyle_ (context, instruction) {\n context.strokeStyle = /** @type {import(\"../../colorlike.js\").ColorLike} */ (instruction[1]);\n context.lineWidth = /** @type {number} */ (instruction[2]);\n context.lineCap = /** @type {CanvasLineCap} */ (instruction[3]);\n context.lineJoin = /** @type {CanvasLineJoin} */ (instruction[4]);\n context.miterLimit = /** @type {number} */ (instruction[5]);\n if (CANVAS_LINE_DASH) {\n context.lineDashOffset = /** @type {number} */ (instruction[7]);\n context.setLineDash(/** @type {Array<number>} */ (instruction[6]));\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n * @param {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} feature Feature.\n */\n CanvasReplay.prototype.renderDeclutter_ = function renderDeclutter_ (declutterGroup, feature) {\n if (declutterGroup && declutterGroup.length > 5) {\n var groupCount = declutterGroup[4];\n if (groupCount == 1 || groupCount == declutterGroup.length - 5) {\n /** @type {import(\"../../structs/RBush.js\").Entry} */\n var box = {\n minX: /** @type {number} */ (declutterGroup[0]),\n minY: /** @type {number} */ (declutterGroup[1]),\n maxX: /** @type {number} */ (declutterGroup[2]),\n maxY: /** @type {number} */ (declutterGroup[3]),\n value: feature\n };\n if (!this.declutterTree.collides(box)) {\n this.declutterTree.insert(box);\n for (var j = 5, jj = declutterGroup.length; j < jj; ++j) {\n var declutterData = /** @type {Array} */ (declutterGroup[j]);\n if (declutterData) {\n if (declutterData.length > 11) {\n this.replayTextBackground_(declutterData[0],\n declutterData[13], declutterData[14], declutterData[15], declutterData[16],\n declutterData[11], declutterData[12]);\n }\n drawImage.apply(undefined, declutterData);\n }\n }\n }\n declutterGroup.length = 5;\n createOrUpdateEmpty(declutterGroup);\n }\n }\n };\n\n /**\n * @private\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {Object<string, boolean>} skippedFeaturesHash Ids of features\n * to skip.\n * @param {Array<*>} instructions Instructions array.\n * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n * @param {function((import(\"../../Feature.js\").default|import(\"../Feature.js\").default)): T|undefined} featureCallback Feature callback.\n * @param {import(\"../../extent.js\").Extent=} opt_hitExtent Only check features that intersect this\n * extent.\n * @return {T|undefined} Callback result.\n * @template T\n */\n CanvasReplay.prototype.replay_ = function replay_ (\n context,\n transform,\n skippedFeaturesHash,\n instructions,\n snapToPixel,\n featureCallback,\n opt_hitExtent\n ) {\n /** @type {Array<number>} */\n var pixelCoordinates;\n if (this.pixelCoordinates_ && equals(transform, this.renderedTransform_)) {\n pixelCoordinates = this.pixelCoordinates_;\n } else {\n if (!this.pixelCoordinates_) {\n this.pixelCoordinates_ = [];\n }\n pixelCoordinates = transform2D(\n this.coordinates, 0, this.coordinates.length, 2,\n transform, this.pixelCoordinates_);\n transformSetFromArray(this.renderedTransform_, transform);\n }\n var skipFeatures = !isEmpty(skippedFeaturesHash);\n var i = 0; // instruction index\n var ii = instructions.length; // end of instructions\n var d = 0; // data index\n var dd; // end of per-instruction data\n var anchorX, anchorY, prevX, prevY, roundX, roundY, declutterGroup, image;\n var pendingFill = 0;\n var pendingStroke = 0;\n var lastFillInstruction = null;\n var lastStrokeInstruction = null;\n var coordinateCache = this.coordinateCache_;\n var viewRotation = this.viewRotation_;\n\n var state = /** @type {import(\"../../render.js\").State} */ ({\n context: context,\n pixelRatio: this.pixelRatio,\n resolution: this.resolution,\n rotation: viewRotation\n });\n\n // When the batch size gets too big, performance decreases. 200 is a good\n // balance between batch size and number of fill/stroke instructions.\n var batchSize = this.instructions != instructions || this.overlaps ? 0 : 200;\n var /** @type {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} */ feature;\n var x, y;\n while (i < ii) {\n var instruction = instructions[i];\n var type = /** @type {CanvasInstruction} */ (instruction[0]);\n switch (type) {\n case CanvasInstruction.BEGIN_GEOMETRY:\n feature = /** @type {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} */ (instruction[1]);\n if ((skipFeatures && skippedFeaturesHash[getUid(feature)]) || !feature.getGeometry()) {\n i = /** @type {number} */ (instruction[2]);\n } else if (opt_hitExtent !== undefined && !intersects(\n opt_hitExtent, feature.getGeometry().getExtent())) {\n i = /** @type {number} */ (instruction[2]) + 1;\n } else {\n ++i;\n }\n break;\n case CanvasInstruction.BEGIN_PATH:\n if (pendingFill > batchSize) {\n this.fill_(context);\n pendingFill = 0;\n }\n if (pendingStroke > batchSize) {\n context.stroke();\n pendingStroke = 0;\n }\n if (!pendingFill && !pendingStroke) {\n context.beginPath();\n prevX = prevY = NaN;\n }\n ++i;\n break;\n case CanvasInstruction.CIRCLE:\n d = /** @type {number} */ (instruction[1]);\n var x1 = pixelCoordinates[d];\n var y1 = pixelCoordinates[d + 1];\n var x2 = pixelCoordinates[d + 2];\n var y2 = pixelCoordinates[d + 3];\n var dx = x2 - x1;\n var dy = y2 - y1;\n var r = Math.sqrt(dx * dx + dy * dy);\n context.moveTo(x1 + r, y1);\n context.arc(x1, y1, r, 0, 2 * Math.PI, true);\n ++i;\n break;\n case CanvasInstruction.CLOSE_PATH:\n context.closePath();\n ++i;\n break;\n case CanvasInstruction.CUSTOM:\n d = /** @type {number} */ (instruction[1]);\n dd = instruction[2];\n var geometry = /** @type {import(\"../../geom/SimpleGeometry.js\").default} */ (instruction[3]);\n var renderer = instruction[4];\n var fn = instruction.length == 6 ? instruction[5] : undefined;\n state.geometry = geometry;\n state.feature = feature;\n if (!(i in coordinateCache)) {\n coordinateCache[i] = [];\n }\n var coords = coordinateCache[i];\n if (fn) {\n fn(pixelCoordinates, d, dd, 2, coords);\n } else {\n coords[0] = pixelCoordinates[d];\n coords[1] = pixelCoordinates[d + 1];\n coords.length = 2;\n }\n renderer(coords, state);\n ++i;\n break;\n case CanvasInstruction.DRAW_IMAGE:\n d = /** @type {number} */ (instruction[1]);\n dd = /** @type {number} */ (instruction[2]);\n image = /** @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement} */\n (instruction[3]);\n // Remaining arguments in DRAW_IMAGE are in alphabetical order\n anchorX = /** @type {number} */ (instruction[4]);\n anchorY = /** @type {number} */ (instruction[5]);\n declutterGroup = featureCallback ? null : /** @type {import(\"../canvas.js\").DeclutterGroup} */ (instruction[6]);\n var height = /** @type {number} */ (instruction[7]);\n var opacity = /** @type {number} */ (instruction[8]);\n var originX = /** @type {number} */ (instruction[9]);\n var originY = /** @type {number} */ (instruction[10]);\n var rotateWithView = /** @type {boolean} */ (instruction[11]);\n var rotation = /** @type {number} */ (instruction[12]);\n var scale = /** @type {number} */ (instruction[13]);\n var width = /** @type {number} */ (instruction[14]);\n\n var padding = (void 0), backgroundFill = (void 0), backgroundStroke = (void 0);\n if (instruction.length > 16) {\n padding = /** @type {Array<number>} */ (instruction[15]);\n backgroundFill = /** @type {boolean} */ (instruction[16]);\n backgroundStroke = /** @type {boolean} */ (instruction[17]);\n } else {\n padding = defaultPadding;\n backgroundFill = backgroundStroke = false;\n }\n\n if (rotateWithView) {\n rotation += viewRotation;\n }\n for (; d < dd; d += 2) {\n this.replayImage_(context,\n pixelCoordinates[d], pixelCoordinates[d + 1], image, anchorX, anchorY,\n declutterGroup, height, opacity, originX, originY, rotation, scale,\n snapToPixel, width, padding,\n backgroundFill ? /** @type {Array<*>} */ (lastFillInstruction) : null,\n backgroundStroke ? /** @type {Array<*>} */ (lastStrokeInstruction) : null);\n }\n this.renderDeclutter_(declutterGroup, feature);\n ++i;\n break;\n case CanvasInstruction.DRAW_CHARS:\n var begin = /** @type {number} */ (instruction[1]);\n var end = /** @type {number} */ (instruction[2]);\n var baseline = /** @type {number} */ (instruction[3]);\n declutterGroup = featureCallback ? null : /** @type {import(\"../canvas.js\").DeclutterGroup} */ (instruction[4]);\n var overflow = /** @type {number} */ (instruction[5]);\n var fillKey = /** @type {string} */ (instruction[6]);\n var maxAngle = /** @type {number} */ (instruction[7]);\n var measure = /** @type {function(string):number} */ (instruction[8]);\n var offsetY = /** @type {number} */ (instruction[9]);\n var strokeKey = /** @type {string} */ (instruction[10]);\n var strokeWidth = /** @type {number} */ (instruction[11]);\n var text = /** @type {string} */ (instruction[12]);\n var textKey = /** @type {string} */ (instruction[13]);\n var textScale = /** @type {number} */ (instruction[14]);\n\n var pathLength = lineStringLength(pixelCoordinates, begin, end, 2);\n var textLength = measure(text);\n if (overflow || textLength <= pathLength) {\n /** @type {import(\"./TextReplay.js\").default} */\n var textReplay = /** @type {?} */ (this);\n var textAlign = textReplay.textStates[textKey].textAlign;\n var startM = (pathLength - textLength) * TEXT_ALIGN[textAlign];\n var parts = drawTextOnPath(\n pixelCoordinates, begin, end, 2, text, measure, startM, maxAngle);\n if (parts) {\n var c = (void 0), cc = (void 0), chars = (void 0), label = (void 0), part = (void 0);\n if (strokeKey) {\n for (c = 0, cc = parts.length; c < cc; ++c) {\n part = parts[c]; // x, y, anchorX, rotation, chunk\n chars = /** @type {string} */ (part[4]);\n label = textReplay.getImage(chars, textKey, '', strokeKey);\n anchorX = /** @type {number} */ (part[2]) + strokeWidth;\n anchorY = baseline * label.height + (0.5 - baseline) * 2 * strokeWidth - offsetY;\n this.replayImage_(context,\n /** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label,\n anchorX, anchorY, declutterGroup, label.height, 1, 0, 0,\n /** @type {number} */ (part[3]), textScale, false, label.width,\n defaultPadding, null, null);\n }\n }\n if (fillKey) {\n for (c = 0, cc = parts.length; c < cc; ++c) {\n part = parts[c]; // x, y, anchorX, rotation, chunk\n chars = /** @type {string} */ (part[4]);\n label = textReplay.getImage(chars, textKey, fillKey, '');\n anchorX = /** @type {number} */ (part[2]);\n anchorY = baseline * label.height - offsetY;\n this.replayImage_(context,\n /** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label,\n anchorX, anchorY, declutterGroup, label.height, 1, 0, 0,\n /** @type {number} */ (part[3]), textScale, false, label.width,\n defaultPadding, null, null);\n }\n }\n }\n }\n this.renderDeclutter_(declutterGroup, feature);\n ++i;\n break;\n case CanvasInstruction.END_GEOMETRY:\n if (featureCallback !== undefined) {\n feature = /** @type {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} */ (instruction[1]);\n var result = featureCallback(feature);\n if (result) {\n return result;\n }\n }\n ++i;\n break;\n case CanvasInstruction.FILL:\n if (batchSize) {\n pendingFill++;\n } else {\n this.fill_(context);\n }\n ++i;\n break;\n case CanvasInstruction.MOVE_TO_LINE_TO:\n d = /** @type {number} */ (instruction[1]);\n dd = /** @type {number} */ (instruction[2]);\n x = pixelCoordinates[d];\n y = pixelCoordinates[d + 1];\n roundX = (x + 0.5) | 0;\n roundY = (y + 0.5) | 0;\n if (roundX !== prevX || roundY !== prevY) {\n context.moveTo(x, y);\n prevX = roundX;\n prevY = roundY;\n }\n for (d += 2; d < dd; d += 2) {\n x = pixelCoordinates[d];\n y = pixelCoordinates[d + 1];\n roundX = (x + 0.5) | 0;\n roundY = (y + 0.5) | 0;\n if (d == dd - 2 || roundX !== prevX || roundY !== prevY) {\n context.lineTo(x, y);\n prevX = roundX;\n prevY = roundY;\n }\n }\n ++i;\n break;\n case CanvasInstruction.SET_FILL_STYLE:\n lastFillInstruction = instruction;\n this.alignFill_ = instruction[2];\n\n if (pendingFill) {\n this.fill_(context);\n pendingFill = 0;\n if (pendingStroke) {\n context.stroke();\n pendingStroke = 0;\n }\n }\n\n context.fillStyle = /** @type {import(\"../../colorlike.js\").ColorLike} */ (instruction[1]);\n ++i;\n break;\n case CanvasInstruction.SET_STROKE_STYLE:\n lastStrokeInstruction = instruction;\n if (pendingStroke) {\n context.stroke();\n pendingStroke = 0;\n }\n this.setStrokeStyle_(context, /** @type {Array<*>} */ (instruction));\n ++i;\n break;\n case CanvasInstruction.STROKE:\n if (batchSize) {\n pendingStroke++;\n } else {\n context.stroke();\n }\n ++i;\n break;\n default:\n ++i; // consume the instruction anyway, to avoid an infinite loop\n break;\n }\n }\n if (pendingFill) {\n this.fill_(context);\n }\n if (pendingStroke) {\n context.stroke();\n }\n return undefined;\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {number} viewRotation View rotation.\n * @param {Object<string, boolean>} skippedFeaturesHash Ids of features\n * to skip.\n * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n */\n CanvasReplay.prototype.replay = function replay (context, transform, viewRotation, skippedFeaturesHash, snapToPixel) {\n this.viewRotation_ = viewRotation;\n this.replay_(context, transform,\n skippedFeaturesHash, this.instructions, snapToPixel, undefined, undefined);\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {number} viewRotation View rotation.\n * @param {Object<string, boolean>} skippedFeaturesHash Ids of features\n * to skip.\n * @param {function((import(\"../../Feature.js\").default|import(\"../Feature.js\").default)): T=} opt_featureCallback\n * Feature callback.\n * @param {import(\"../../extent.js\").Extent=} opt_hitExtent Only check features that intersect this\n * extent.\n * @return {T|undefined} Callback result.\n * @template T\n */\n CanvasReplay.prototype.replayHitDetection = function replayHitDetection (\n context,\n transform,\n viewRotation,\n skippedFeaturesHash,\n opt_featureCallback,\n opt_hitExtent\n ) {\n this.viewRotation_ = viewRotation;\n return this.replay_(context, transform, skippedFeaturesHash,\n this.hitDetectionInstructions, true, opt_featureCallback, opt_hitExtent);\n };\n\n /**\n * Reverse the hit detection instructions.\n */\n CanvasReplay.prototype.reverseHitDetectionInstructions = function reverseHitDetectionInstructions () {\n var hitDetectionInstructions = this.hitDetectionInstructions;\n // step 1 - reverse array\n hitDetectionInstructions.reverse();\n // step 2 - reverse instructions within geometry blocks\n var i;\n var n = hitDetectionInstructions.length;\n var instruction;\n var type;\n var begin = -1;\n for (i = 0; i < n; ++i) {\n instruction = hitDetectionInstructions[i];\n type = /** @type {CanvasInstruction} */ (instruction[0]);\n if (type == CanvasInstruction.END_GEOMETRY) {\n begin = i;\n } else if (type == CanvasInstruction.BEGIN_GEOMETRY) {\n instruction[2] = i;\n reverseSubArray(this.hitDetectionInstructions, begin, i);\n begin = -1;\n }\n }\n };\n\n /**\n * @inheritDoc\n */\n CanvasReplay.prototype.setFillStrokeStyle = function setFillStrokeStyle (fillStyle, strokeStyle) {\n var state = this.state;\n if (fillStyle) {\n var fillStyleColor = fillStyle.getColor();\n state.fillStyle = asColorLike(fillStyleColor ?\n fillStyleColor : defaultFillStyle);\n } else {\n state.fillStyle = undefined;\n }\n if (strokeStyle) {\n var strokeStyleColor = strokeStyle.getColor();\n state.strokeStyle = asColorLike(strokeStyleColor ?\n strokeStyleColor : defaultStrokeStyle);\n var strokeStyleLineCap = strokeStyle.getLineCap();\n state.lineCap = strokeStyleLineCap !== undefined ?\n strokeStyleLineCap : defaultLineCap;\n var strokeStyleLineDash = strokeStyle.getLineDash();\n state.lineDash = strokeStyleLineDash ?\n strokeStyleLineDash.slice() : defaultLineDash;\n var strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();\n state.lineDashOffset = strokeStyleLineDashOffset ?\n strokeStyleLineDashOffset : defaultLineDashOffset;\n var strokeStyleLineJoin = strokeStyle.getLineJoin();\n state.lineJoin = strokeStyleLineJoin !== undefined ?\n strokeStyleLineJoin : defaultLineJoin;\n var strokeStyleWidth = strokeStyle.getWidth();\n state.lineWidth = strokeStyleWidth !== undefined ?\n strokeStyleWidth : defaultLineWidth;\n var strokeStyleMiterLimit = strokeStyle.getMiterLimit();\n state.miterLimit = strokeStyleMiterLimit !== undefined ?\n strokeStyleMiterLimit : defaultMiterLimit;\n\n if (state.lineWidth > this.maxLineWidth) {\n this.maxLineWidth = state.lineWidth;\n // invalidate the buffered max extent cache\n this.bufferedMaxExtent_ = null;\n }\n } else {\n state.strokeStyle = undefined;\n state.lineCap = undefined;\n state.lineDash = null;\n state.lineDashOffset = undefined;\n state.lineJoin = undefined;\n state.lineWidth = undefined;\n state.miterLimit = undefined;\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").FillStrokeState} state State.\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry Geometry.\n * @return {Array<*>} Fill instruction.\n */\n CanvasReplay.prototype.createFill = function createFill (state, geometry) {\n var fillStyle = state.fillStyle;\n /** @type {Array<*>} */\n var fillInstruction = [CanvasInstruction.SET_FILL_STYLE, fillStyle];\n if (typeof fillStyle !== 'string') {\n // Fill is a pattern or gradient - align it!\n fillInstruction.push(true);\n }\n return fillInstruction;\n };\n\n /**\n * @param {import(\"../canvas.js\").FillStrokeState} state State.\n */\n CanvasReplay.prototype.applyStroke = function applyStroke (state) {\n this.instructions.push(this.createStroke(state));\n };\n\n /**\n * @param {import(\"../canvas.js\").FillStrokeState} state State.\n * @return {Array<*>} Stroke instruction.\n */\n CanvasReplay.prototype.createStroke = function createStroke (state) {\n return [\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth * this.pixelRatio, state.lineCap,\n state.lineJoin, state.miterLimit,\n this.applyPixelRatio(state.lineDash), state.lineDashOffset * this.pixelRatio\n ];\n };\n\n /**\n * @param {import(\"../canvas.js\").FillStrokeState} state State.\n * @param {function(this:CanvasReplay, import(\"../canvas.js\").FillStrokeState, (import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default)):Array<*>} createFill Create fill.\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry Geometry.\n */\n CanvasReplay.prototype.updateFillStyle = function updateFillStyle (state, createFill, geometry) {\n var fillStyle = state.fillStyle;\n if (typeof fillStyle !== 'string' || state.currentFillStyle != fillStyle) {\n if (fillStyle !== undefined) {\n this.instructions.push(createFill.call(this, state, geometry));\n }\n state.currentFillStyle = fillStyle;\n }\n };\n\n /**\n * @param {import(\"../canvas.js\").FillStrokeState} state State.\n * @param {function(this:CanvasReplay, import(\"../canvas.js\").FillStrokeState)} applyStroke Apply stroke.\n */\n CanvasReplay.prototype.updateStrokeStyle = function updateStrokeStyle (state, applyStroke) {\n var strokeStyle = state.strokeStyle;\n var lineCap = state.lineCap;\n var lineDash = state.lineDash;\n var lineDashOffset = state.lineDashOffset;\n var lineJoin = state.lineJoin;\n var lineWidth = state.lineWidth;\n var miterLimit = state.miterLimit;\n if (state.currentStrokeStyle != strokeStyle ||\n state.currentLineCap != lineCap ||\n (lineDash != state.currentLineDash && !equals(state.currentLineDash, lineDash)) ||\n state.currentLineDashOffset != lineDashOffset ||\n state.currentLineJoin != lineJoin ||\n state.currentLineWidth != lineWidth ||\n state.currentMiterLimit != miterLimit) {\n if (strokeStyle !== undefined) {\n applyStroke.call(this, state);\n }\n state.currentStrokeStyle = strokeStyle;\n state.currentLineCap = lineCap;\n state.currentLineDash = lineDash;\n state.currentLineDashOffset = lineDashOffset;\n state.currentLineJoin = lineJoin;\n state.currentLineWidth = lineWidth;\n state.currentMiterLimit = miterLimit;\n }\n };\n\n /**\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry Geometry.\n * @param {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} feature Feature.\n */\n CanvasReplay.prototype.endGeometry = function endGeometry (geometry, feature) {\n this.beginGeometryInstruction1_[2] = this.instructions.length;\n this.beginGeometryInstruction1_ = null;\n this.beginGeometryInstruction2_[2] = this.hitDetectionInstructions.length;\n this.beginGeometryInstruction2_ = null;\n var endGeometryInstruction = [CanvasInstruction.END_GEOMETRY, feature];\n this.instructions.push(endGeometryInstruction);\n this.hitDetectionInstructions.push(endGeometryInstruction);\n };\n\n /**\n * Get the buffered rendering extent. Rendering will be clipped to the extent\n * provided to the constructor. To account for symbolizers that may intersect\n * this extent, we calculate a buffered extent (e.g. based on stroke width).\n * @return {import(\"../../extent.js\").Extent} The buffered rendering extent.\n * @protected\n */\n CanvasReplay.prototype.getBufferedMaxExtent = function getBufferedMaxExtent () {\n if (!this.bufferedMaxExtent_) {\n this.bufferedMaxExtent_ = clone(this.maxExtent);\n if (this.maxLineWidth > 0) {\n var width = this.resolution * (this.maxLineWidth + 1) / 2;\n buffer(this.bufferedMaxExtent_, width, this.bufferedMaxExtent_);\n }\n }\n return this.bufferedMaxExtent_;\n };\n\n return CanvasReplay;\n}(VectorContext));\n\n\nexport default CanvasReplay;\n\n//# sourceMappingURL=Replay.js.map","/**\n * @module ol/render/canvas/ImageReplay\n */\nimport CanvasInstruction from './Instruction.js';\nimport CanvasReplay from './Replay.js';\n\nvar CanvasImageReplay = /*@__PURE__*/(function (CanvasReplay) {\n function CanvasImageReplay(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {\n CanvasReplay.call(this, tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);\n\n /**\n * @private\n * @type {import(\"../canvas.js\").DeclutterGroup}\n */\n this.declutterGroup_ = null;\n\n /**\n * @private\n * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n */\n this.hitDetectionImage_ = null;\n\n /**\n * @private\n * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n */\n this.image_ = null;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.anchorX_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.anchorY_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.height_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.opacity_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.originX_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.originY_ = undefined;\n\n /**\n * @private\n * @type {boolean|undefined}\n */\n this.rotateWithView_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.rotation_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.scale_ = undefined;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.width_ = undefined;\n\n }\n\n if ( CanvasReplay ) CanvasImageReplay.__proto__ = CanvasReplay;\n CanvasImageReplay.prototype = Object.create( CanvasReplay && CanvasReplay.prototype );\n CanvasImageReplay.prototype.constructor = CanvasImageReplay;\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @private\n * @return {number} My end.\n */\n CanvasImageReplay.prototype.drawCoordinates_ = function drawCoordinates_ (flatCoordinates, offset, end, stride) {\n return this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageReplay.prototype.drawPoint = function drawPoint (pointGeometry, feature) {\n if (!this.image_) {\n return;\n }\n this.beginGeometry(pointGeometry, feature);\n var flatCoordinates = pointGeometry.getFlatCoordinates();\n var stride = pointGeometry.getStride();\n var myBegin = this.coordinates.length;\n var myEnd = this.drawCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);\n this.instructions.push([\n CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.image_,\n // Remaining arguments to DRAW_IMAGE are in alphabetical order\n this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,\n this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n this.scale_ * this.pixelRatio, this.width_\n ]);\n this.hitDetectionInstructions.push([\n CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.hitDetectionImage_,\n // Remaining arguments to DRAW_IMAGE are in alphabetical order\n this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,\n this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n this.scale_, this.width_\n ]);\n this.endGeometry(pointGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageReplay.prototype.drawMultiPoint = function drawMultiPoint (multiPointGeometry, feature) {\n if (!this.image_) {\n return;\n }\n this.beginGeometry(multiPointGeometry, feature);\n var flatCoordinates = multiPointGeometry.getFlatCoordinates();\n var stride = multiPointGeometry.getStride();\n var myBegin = this.coordinates.length;\n var myEnd = this.drawCoordinates_(\n flatCoordinates, 0, flatCoordinates.length, stride);\n this.instructions.push([\n CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.image_,\n // Remaining arguments to DRAW_IMAGE are in alphabetical order\n this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,\n this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n this.scale_ * this.pixelRatio, this.width_\n ]);\n this.hitDetectionInstructions.push([\n CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.hitDetectionImage_,\n // Remaining arguments to DRAW_IMAGE are in alphabetical order\n this.anchorX_, this.anchorY_, this.declutterGroup_, this.height_, this.opacity_,\n this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n this.scale_, this.width_\n ]);\n this.endGeometry(multiPointGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageReplay.prototype.finish = function finish () {\n this.reverseHitDetectionInstructions();\n // FIXME this doesn't really protect us against further calls to draw*Geometry\n this.anchorX_ = undefined;\n this.anchorY_ = undefined;\n this.hitDetectionImage_ = null;\n this.image_ = null;\n this.height_ = undefined;\n this.scale_ = undefined;\n this.opacity_ = undefined;\n this.originX_ = undefined;\n this.originY_ = undefined;\n this.rotateWithView_ = undefined;\n this.rotation_ = undefined;\n this.width_ = undefined;\n };\n\n /**\n * @inheritDoc\n */\n CanvasImageReplay.prototype.setImageStyle = function setImageStyle (imageStyle, declutterGroup) {\n var anchor = imageStyle.getAnchor();\n var size = imageStyle.getSize();\n var hitDetectionImage = imageStyle.getHitDetectionImage(1);\n var image = imageStyle.getImage(1);\n var origin = imageStyle.getOrigin();\n this.anchorX_ = anchor[0];\n this.anchorY_ = anchor[1];\n this.declutterGroup_ = /** @type {import(\"../canvas.js\").DeclutterGroup} */ (declutterGroup);\n this.hitDetectionImage_ = hitDetectionImage;\n this.image_ = image;\n this.height_ = size[1];\n this.opacity_ = imageStyle.getOpacity();\n this.originX_ = origin[0];\n this.originY_ = origin[1];\n this.rotateWithView_ = imageStyle.getRotateWithView();\n this.rotation_ = imageStyle.getRotation();\n this.scale_ = imageStyle.getScale();\n this.width_ = size[0];\n };\n\n return CanvasImageReplay;\n}(CanvasReplay));\n\n\nexport default CanvasImageReplay;\n\n//# sourceMappingURL=ImageReplay.js.map","/**\n * @module ol/render/canvas/LineStringReplay\n */\nimport CanvasInstruction, {strokeInstruction, beginPathInstruction} from './Instruction.js';\nimport CanvasReplay from './Replay.js';\n\nvar CanvasLineStringReplay = /*@__PURE__*/(function (CanvasReplay) {\n function CanvasLineStringReplay(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {\n CanvasReplay.call(this, tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);\n }\n\n if ( CanvasReplay ) CanvasLineStringReplay.__proto__ = CanvasReplay;\n CanvasLineStringReplay.prototype = Object.create( CanvasReplay && CanvasReplay.prototype );\n CanvasLineStringReplay.prototype.constructor = CanvasLineStringReplay;\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @private\n * @return {number} end.\n */\n CanvasLineStringReplay.prototype.drawFlatCoordinates_ = function drawFlatCoordinates_ (flatCoordinates, offset, end, stride) {\n var myBegin = this.coordinates.length;\n var myEnd = this.appendFlatCoordinates(\n flatCoordinates, offset, end, stride, false, false);\n var moveToLineToInstruction = [CanvasInstruction.MOVE_TO_LINE_TO, myBegin, myEnd];\n this.instructions.push(moveToLineToInstruction);\n this.hitDetectionInstructions.push(moveToLineToInstruction);\n return end;\n };\n\n /**\n * @inheritDoc\n */\n CanvasLineStringReplay.prototype.drawLineString = function drawLineString (lineStringGeometry, feature) {\n var state = this.state;\n var strokeStyle = state.strokeStyle;\n var lineWidth = state.lineWidth;\n if (strokeStyle === undefined || lineWidth === undefined) {\n return;\n }\n this.updateStrokeStyle(state, this.applyStroke);\n this.beginGeometry(lineStringGeometry, feature);\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n state.miterLimit, state.lineDash, state.lineDashOffset\n ], beginPathInstruction);\n var flatCoordinates = lineStringGeometry.getFlatCoordinates();\n var stride = lineStringGeometry.getStride();\n this.drawFlatCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);\n this.hitDetectionInstructions.push(strokeInstruction);\n this.endGeometry(lineStringGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasLineStringReplay.prototype.drawMultiLineString = function drawMultiLineString (multiLineStringGeometry, feature) {\n var state = this.state;\n var strokeStyle = state.strokeStyle;\n var lineWidth = state.lineWidth;\n if (strokeStyle === undefined || lineWidth === undefined) {\n return;\n }\n this.updateStrokeStyle(state, this.applyStroke);\n this.beginGeometry(multiLineStringGeometry, feature);\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n state.miterLimit, state.lineDash, state.lineDashOffset\n ], beginPathInstruction);\n var ends = multiLineStringGeometry.getEnds();\n var flatCoordinates = multiLineStringGeometry.getFlatCoordinates();\n var stride = multiLineStringGeometry.getStride();\n var offset = 0;\n for (var i = 0, ii = ends.length; i < ii; ++i) {\n offset = this.drawFlatCoordinates_(flatCoordinates, offset, ends[i], stride);\n }\n this.hitDetectionInstructions.push(strokeInstruction);\n this.endGeometry(multiLineStringGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasLineStringReplay.prototype.finish = function finish () {\n var state = this.state;\n if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {\n this.instructions.push(strokeInstruction);\n }\n this.reverseHitDetectionInstructions();\n this.state = null;\n };\n\n /**\n * @inheritDoc.\n */\n CanvasLineStringReplay.prototype.applyStroke = function applyStroke (state) {\n if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {\n this.instructions.push(strokeInstruction);\n state.lastStroke = this.coordinates.length;\n }\n state.lastStroke = 0;\n CanvasReplay.prototype.applyStroke.call(this, state);\n this.instructions.push(beginPathInstruction);\n };\n\n return CanvasLineStringReplay;\n}(CanvasReplay));\n\n\nexport default CanvasLineStringReplay;\n\n//# sourceMappingURL=LineStringReplay.js.map","/**\n * @module ol/render/canvas/PolygonReplay\n */\nimport {asString} from '../../color.js';\nimport {snap} from '../../geom/flat/simplify.js';\nimport {defaultFillStyle} from '../canvas.js';\nimport CanvasInstruction, {\n fillInstruction, strokeInstruction, beginPathInstruction, closePathInstruction\n} from './Instruction.js';\nimport CanvasReplay from './Replay.js';\n\n\nvar CanvasPolygonReplay = /*@__PURE__*/(function (CanvasReplay) {\n function CanvasPolygonReplay(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {\n CanvasReplay.call(this, tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);\n }\n\n if ( CanvasReplay ) CanvasPolygonReplay.__proto__ = CanvasReplay;\n CanvasPolygonReplay.prototype = Object.create( CanvasReplay && CanvasReplay.prototype );\n CanvasPolygonReplay.prototype.constructor = CanvasPolygonReplay;\n\n /**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @private\n * @return {number} End.\n */\n CanvasPolygonReplay.prototype.drawFlatCoordinatess_ = function drawFlatCoordinatess_ (flatCoordinates, offset, ends, stride) {\n var state = this.state;\n var fill = state.fillStyle !== undefined;\n var stroke = state.strokeStyle != undefined;\n var numEnds = ends.length;\n this.instructions.push(beginPathInstruction);\n this.hitDetectionInstructions.push(beginPathInstruction);\n for (var i = 0; i < numEnds; ++i) {\n var end = ends[i];\n var myBegin = this.coordinates.length;\n var myEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, true, !stroke);\n var moveToLineToInstruction = [CanvasInstruction.MOVE_TO_LINE_TO, myBegin, myEnd];\n this.instructions.push(moveToLineToInstruction);\n this.hitDetectionInstructions.push(moveToLineToInstruction);\n if (stroke) {\n // Performance optimization: only call closePath() when we have a stroke.\n // Otherwise the ring is closed already (see appendFlatCoordinates above).\n this.instructions.push(closePathInstruction);\n this.hitDetectionInstructions.push(closePathInstruction);\n }\n offset = end;\n }\n if (fill) {\n this.instructions.push(fillInstruction);\n this.hitDetectionInstructions.push(fillInstruction);\n }\n if (stroke) {\n this.instructions.push(strokeInstruction);\n this.hitDetectionInstructions.push(strokeInstruction);\n }\n return offset;\n };\n\n /**\n * @inheritDoc\n */\n CanvasPolygonReplay.prototype.drawCircle = function drawCircle (circleGeometry, feature) {\n var state = this.state;\n var fillStyle = state.fillStyle;\n var strokeStyle = state.strokeStyle;\n if (fillStyle === undefined && strokeStyle === undefined) {\n return;\n }\n this.setFillStrokeStyles_(circleGeometry);\n this.beginGeometry(circleGeometry, feature);\n if (state.fillStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_FILL_STYLE,\n asString(defaultFillStyle)\n ]);\n }\n if (state.strokeStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n state.miterLimit, state.lineDash, state.lineDashOffset\n ]);\n }\n var flatCoordinates = circleGeometry.getFlatCoordinates();\n var stride = circleGeometry.getStride();\n var myBegin = this.coordinates.length;\n this.appendFlatCoordinates(\n flatCoordinates, 0, flatCoordinates.length, stride, false, false);\n var circleInstruction = [CanvasInstruction.CIRCLE, myBegin];\n this.instructions.push(beginPathInstruction, circleInstruction);\n this.hitDetectionInstructions.push(beginPathInstruction, circleInstruction);\n this.hitDetectionInstructions.push(fillInstruction);\n if (state.fillStyle !== undefined) {\n this.instructions.push(fillInstruction);\n }\n if (state.strokeStyle !== undefined) {\n this.instructions.push(strokeInstruction);\n this.hitDetectionInstructions.push(strokeInstruction);\n }\n this.endGeometry(circleGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasPolygonReplay.prototype.drawPolygon = function drawPolygon (polygonGeometry, feature) {\n var state = this.state;\n var fillStyle = state.fillStyle;\n var strokeStyle = state.strokeStyle;\n if (fillStyle === undefined && strokeStyle === undefined) {\n return;\n }\n this.setFillStrokeStyles_(polygonGeometry);\n this.beginGeometry(polygonGeometry, feature);\n if (state.fillStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_FILL_STYLE,\n asString(defaultFillStyle)\n ]);\n }\n if (state.strokeStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n state.miterLimit, state.lineDash, state.lineDashOffset\n ]);\n }\n var ends = polygonGeometry.getEnds();\n var flatCoordinates = polygonGeometry.getOrientedFlatCoordinates();\n var stride = polygonGeometry.getStride();\n this.drawFlatCoordinatess_(flatCoordinates, 0, ends, stride);\n this.endGeometry(polygonGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasPolygonReplay.prototype.drawMultiPolygon = function drawMultiPolygon (multiPolygonGeometry, feature) {\n var state = this.state;\n var fillStyle = state.fillStyle;\n var strokeStyle = state.strokeStyle;\n if (fillStyle === undefined && strokeStyle === undefined) {\n return;\n }\n this.setFillStrokeStyles_(multiPolygonGeometry);\n this.beginGeometry(multiPolygonGeometry, feature);\n if (state.fillStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_FILL_STYLE,\n asString(defaultFillStyle)\n ]);\n }\n if (state.strokeStyle !== undefined) {\n this.hitDetectionInstructions.push([\n CanvasInstruction.SET_STROKE_STYLE,\n state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n state.miterLimit, state.lineDash, state.lineDashOffset\n ]);\n }\n var endss = multiPolygonGeometry.getEndss();\n var flatCoordinates = multiPolygonGeometry.getOrientedFlatCoordinates();\n var stride = multiPolygonGeometry.getStride();\n var offset = 0;\n for (var i = 0, ii = endss.length; i < ii; ++i) {\n offset = this.drawFlatCoordinatess_(flatCoordinates, offset, endss[i], stride);\n }\n this.endGeometry(multiPolygonGeometry, feature);\n };\n\n /**\n * @inheritDoc\n */\n CanvasPolygonReplay.prototype.finish = function finish () {\n this.reverseHitDetectionInstructions();\n this.state = null;\n // We want to preserve topology when drawing polygons. Polygons are\n // simplified using quantization and point elimination. However, we might\n // have received a mix of quantized and non-quantized geometries, so ensure\n // that all are quantized by quantizing all coordinates in the batch.\n var tolerance = this.tolerance;\n if (tolerance !== 0) {\n var coordinates = this.coordinates;\n for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n coordinates[i] = snap(coordinates[i], tolerance);\n }\n }\n };\n\n /**\n * @private\n * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry Geometry.\n */\n CanvasPolygonReplay.prototype.setFillStrokeStyles_ = function setFillStrokeStyles_ (geometry) {\n var state = this.state;\n var fillStyle = state.fillStyle;\n if (fillStyle !== undefined) {\n this.updateFillStyle(state, this.createFill, geometry);\n }\n if (state.strokeStyle !== undefined) {\n this.updateStrokeStyle(state, this.applyStroke);\n }\n };\n\n return CanvasPolygonReplay;\n}(CanvasReplay));\n\n\nexport default CanvasPolygonReplay;\n\n//# sourceMappingURL=PolygonReplay.js.map","/**\n * @module ol/geom/flat/straightchunk\n */\n\n\n/**\n * @param {number} maxAngle Maximum acceptable angle delta between segments.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {Array<number>} Start and end of the first suitable chunk of the\n * given `flatCoordinates`.\n */\nexport function matchingChunk(maxAngle, flatCoordinates, offset, end, stride) {\n var chunkStart = offset;\n var chunkEnd = offset;\n var chunkM = 0;\n var m = 0;\n var start = offset;\n var acos, i, m12, m23, x1, y1, x12, y12, x23, y23;\n for (i = offset; i < end; i += stride) {\n var x2 = flatCoordinates[i];\n var y2 = flatCoordinates[i + 1];\n if (x1 !== undefined) {\n x23 = x2 - x1;\n y23 = y2 - y1;\n m23 = Math.sqrt(x23 * x23 + y23 * y23);\n if (x12 !== undefined) {\n m += m12;\n acos = Math.acos((x12 * x23 + y12 * y23) / (m12 * m23));\n if (acos > maxAngle) {\n if (m > chunkM) {\n chunkM = m;\n chunkStart = start;\n chunkEnd = i;\n }\n m = 0;\n start = i - stride;\n }\n }\n m12 = m23;\n x12 = x23;\n y12 = y23;\n }\n x1 = x2;\n y1 = y2;\n }\n m += m23;\n return m > chunkM ? [start, i] : [chunkStart, chunkEnd];\n}\n\n//# sourceMappingURL=straightchunk.js.map","/**\n * @module ol/style/TextPlacement\n */\n\n/**\n * Text placement. One of `'point'`, `'line'`. Default is `'point'`. Note that\n * `'line'` requires the underlying geometry to be a {@link module:ol/geom/LineString~LineString},\n * {@link module:ol/geom/Polygon~Polygon}, {@link module:ol/geom/MultiLineString~MultiLineString} or\n * {@link module:ol/geom/MultiPolygon~MultiPolygon}.\n * @enum {string}\n */\nexport default {\n POINT: 'point',\n LINE: 'line'\n};\n\n//# sourceMappingURL=TextPlacement.js.map","/**\n * @module ol/render/canvas/TextReplay\n */\nimport {getUid} from '../../util.js';\nimport {asColorLike} from '../../colorlike.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {intersects} from '../../extent.js';\nimport {matchingChunk} from '../../geom/flat/straightchunk.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport {CANVAS_LINE_DASH} from '../../has.js';\nimport {labelCache, measureTextWidth, defaultTextAlign, measureTextHeight, defaultPadding, defaultLineCap, defaultLineDashOffset, defaultLineDash, defaultLineJoin, defaultFillStyle, checkFont, defaultFont, defaultLineWidth, defaultMiterLimit, defaultStrokeStyle, defaultTextBaseline} from '../canvas.js';\nimport CanvasInstruction from './Instruction.js';\nimport CanvasReplay from './Replay.js';\nimport {TEXT_ALIGN} from '../replay.js';\nimport TextPlacement from '../../style/TextPlacement.js';\n\nvar CanvasTextReplay = /*@__PURE__*/(function (CanvasReplay) {\n function CanvasTextReplay(tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree) {\n CanvasReplay.call(this, tolerance, maxExtent, resolution, pixelRatio, overlaps, declutterTree);\n\n /**\n * @private\n * @type {import(\"../canvas.js\").DeclutterGroup}\n */\n this.declutterGroup_;\n\n /**\n * @private\n * @type {Array<HTMLCanvasElement>}\n */\n this.labels_ = null;\n\n /**\n * @private\n * @type {string}\n */\n this.text_ = '';\n\n /**\n * @private\n * @type {number}\n */\n this.textOffsetX_ = 0;\n\n /**\n * @private\n * @type {number}\n */\n this.textOffsetY_ = 0;\n\n /**\n * @private\n * @type {boolean|undefined}\n */\n this.textRotateWithView_ = undefined;\n\n /**\n * @private\n * @type {number}\n */\n this.textRotation_ = 0;\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").FillState}\n */\n this.textFillState_ = null;\n\n /**\n * @type {!Object<string, import(\"../canvas.js\").FillState>}\n */\n this.fillStates = {};\n\n /**\n * @private\n * @type {?import(\"../canvas.js\").StrokeState}\n */\n this.textStrokeState_ = null;\n\n /**\n * @type {!Object<string, import(\"../canvas.js\").StrokeState>}\n */\n this.strokeStates = {};\n\n /**\n * @private\n * @type {import(\"../canvas.js\").TextState}\n */\n this.textState_ = /** @type {import(\"../canvas.js\").TextState} */ ({});\n\n /**\n * @type {!Object<string, import(\"../canvas.js\").TextState>}\n */\n this.textStates = {};\n\n /**\n * @private\n * @type {string}\n */\n this.textKey_ = '';\n\n /**\n * @private\n * @type {string}\n */\n this.fillKey_ = '';\n\n /**\n * @private\n * @type {string}\n */\n this.strokeKey_ = '';\n\n /**\n * @private\n * @type {Object<string, Object<string, number>>}\n */\n this.widths_ = {};\n\n labelCache.prune();\n\n }\n\n if ( CanvasReplay ) CanvasTextReplay.__proto__ = CanvasReplay;\n CanvasTextReplay.prototype = Object.create( CanvasReplay && CanvasReplay.prototype );\n CanvasTextReplay.prototype.constructor = CanvasTextReplay;\n\n /**\n * @inheritDoc\n */\n CanvasTextReplay.prototype.drawText = function drawText (geometry, feature) {\n var fillState = this.textFillState_;\n var strokeState = this.textStrokeState_;\n var textState = this.textState_;\n if (this.text_ === '' || !textState || (!fillState && !strokeState)) {\n return;\n }\n\n var begin = this.coordinates.length;\n\n var geometryType = geometry.getType();\n var flatCoordinates = null;\n var end = 2;\n var stride = 2;\n var i, ii;\n\n if (textState.placement === TextPlacement.LINE) {\n if (!intersects(this.getBufferedMaxExtent(), geometry.getExtent())) {\n return;\n }\n var ends;\n flatCoordinates = geometry.getFlatCoordinates();\n stride = geometry.getStride();\n if (geometryType == GeometryType.LINE_STRING) {\n ends = [flatCoordinates.length];\n } else if (geometryType == GeometryType.MULTI_LINE_STRING) {\n ends = geometry.getEnds();\n } else if (geometryType == GeometryType.POLYGON) {\n ends = geometry.getEnds().slice(0, 1);\n } else if (geometryType == GeometryType.MULTI_POLYGON) {\n var endss = geometry.getEndss();\n ends = [];\n for (i = 0, ii = endss.length; i < ii; ++i) {\n ends.push(endss[i][0]);\n }\n }\n this.beginGeometry(geometry, feature);\n var textAlign = textState.textAlign;\n var flatOffset = 0;\n var flatEnd;\n for (var o = 0, oo = ends.length; o < oo; ++o) {\n if (textAlign == undefined) {\n var range = matchingChunk(textState.maxAngle, flatCoordinates, flatOffset, ends[o], stride);\n flatOffset = range[0];\n flatEnd = range[1];\n } else {\n flatEnd = ends[o];\n }\n for (i = flatOffset; i < flatEnd; i += stride) {\n this.coordinates.push(flatCoordinates[i], flatCoordinates[i + 1]);\n }\n end = this.coordinates.length;\n flatOffset = ends[o];\n this.drawChars_(begin, end, this.declutterGroup_);\n begin = end;\n }\n this.endGeometry(geometry, feature);\n\n } else {\n var label = this.getImage(this.text_, this.textKey_, this.fillKey_, this.strokeKey_);\n var width = label.width / this.pixelRatio;\n switch (geometryType) {\n case GeometryType.POINT:\n case GeometryType.MULTI_POINT:\n flatCoordinates = geometry.getFlatCoordinates();\n end = flatCoordinates.length;\n break;\n case GeometryType.LINE_STRING:\n flatCoordinates = /** @type {import(\"../../geom/LineString.js\").default} */ (geometry).getFlatMidpoint();\n break;\n case GeometryType.CIRCLE:\n flatCoordinates = /** @type {import(\"../../geom/Circle.js\").default} */ (geometry).getCenter();\n break;\n case GeometryType.MULTI_LINE_STRING:\n flatCoordinates = /** @type {import(\"../../geom/MultiLineString.js\").default} */ (geometry).getFlatMidpoints();\n end = flatCoordinates.length;\n break;\n case GeometryType.POLYGON:\n flatCoordinates = /** @type {import(\"../../geom/Polygon.js\").default} */ (geometry).getFlatInteriorPoint();\n if (!textState.overflow && flatCoordinates[2] / this.resolution < width) {\n return;\n }\n stride = 3;\n break;\n case GeometryType.MULTI_POLYGON:\n var interiorPoints = /** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry).getFlatInteriorPoints();\n flatCoordinates = [];\n for (i = 0, ii = interiorPoints.length; i < ii; i += 3) {\n if (textState.overflow || interiorPoints[i + 2] / this.resolution >= width) {\n flatCoordinates.push(interiorPoints[i], interiorPoints[i + 1]);\n }\n }\n end = flatCoordinates.length;\n if (end == 0) {\n return;\n }\n break;\n default:\n }\n end = this.appendFlatCoordinates(flatCoordinates, 0, end, stride, false, false);\n if (textState.backgroundFill || textState.backgroundStroke) {\n this.setFillStrokeStyle(textState.backgroundFill, textState.backgroundStroke);\n if (textState.backgroundFill) {\n this.updateFillStyle(this.state, this.createFill, geometry);\n this.hitDetectionInstructions.push(this.createFill(this.state, geometry));\n }\n if (textState.backgroundStroke) {\n this.updateStrokeStyle(this.state, this.applyStroke);\n this.hitDetectionInstructions.push(this.createStroke(this.state));\n }\n }\n this.beginGeometry(geometry, feature);\n this.drawTextImage_(label, begin, end);\n this.endGeometry(geometry, feature);\n }\n };\n\n /**\n * @param {string} text Text.\n * @param {string} textKey Text style key.\n * @param {string} fillKey Fill style key.\n * @param {string} strokeKey Stroke style key.\n * @return {HTMLCanvasElement} Image.\n */\n CanvasTextReplay.prototype.getImage = function getImage (text, textKey, fillKey, strokeKey) {\n var label;\n var key = strokeKey + textKey + text + fillKey + this.pixelRatio;\n\n if (!labelCache.containsKey(key)) {\n var strokeState = strokeKey ? this.strokeStates[strokeKey] || this.textStrokeState_ : null;\n var fillState = fillKey ? this.fillStates[fillKey] || this.textFillState_ : null;\n var textState = this.textStates[textKey] || this.textState_;\n var pixelRatio = this.pixelRatio;\n var scale = textState.scale * pixelRatio;\n var align = TEXT_ALIGN[textState.textAlign || defaultTextAlign];\n var strokeWidth = strokeKey && strokeState.lineWidth ? strokeState.lineWidth : 0;\n\n var lines = text.split('\\n');\n var numLines = lines.length;\n var widths = [];\n var width = measureTextWidths(textState.font, lines, widths);\n var lineHeight = measureTextHeight(textState.font);\n var height = lineHeight * numLines;\n var renderWidth = (width + strokeWidth);\n var context = createCanvasContext2D(\n Math.ceil(renderWidth * scale),\n Math.ceil((height + strokeWidth) * scale));\n label = context.canvas;\n labelCache.set(key, label);\n if (scale != 1) {\n context.scale(scale, scale);\n }\n context.font = textState.font;\n if (strokeKey) {\n context.strokeStyle = strokeState.strokeStyle;\n context.lineWidth = strokeWidth;\n context.lineCap = /** @type {CanvasLineCap} */ (strokeState.lineCap);\n context.lineJoin = /** @type {CanvasLineJoin} */ (strokeState.lineJoin);\n context.miterLimit = strokeState.miterLimit;\n if (CANVAS_LINE_DASH && strokeState.lineDash.length) {\n context.setLineDash(strokeState.lineDash);\n context.lineDashOffset = strokeState.lineDashOffset;\n }\n }\n if (fillKey) {\n context.fillStyle = fillState.fillStyle;\n }\n context.textBaseline = 'middle';\n context.textAlign = 'center';\n var leftRight = (0.5 - align);\n var x = align * label.width / scale + leftRight * strokeWidth;\n var i;\n if (strokeKey) {\n for (i = 0; i < numLines; ++i) {\n context.strokeText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);\n }\n }\n if (fillKey) {\n for (i = 0; i < numLines; ++i) {\n context.fillText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);\n }\n }\n }\n return labelCache.get(key);\n };\n\n /**\n * @private\n * @param {HTMLCanvasElement} label Label.\n * @param {number} begin Begin.\n * @param {number} end End.\n */\n CanvasTextReplay.prototype.drawTextImage_ = function drawTextImage_ (label, begin, end) {\n var textState = this.textState_;\n var strokeState = this.textStrokeState_;\n var pixelRatio = this.pixelRatio;\n var align = TEXT_ALIGN[textState.textAlign || defaultTextAlign];\n var baseline = TEXT_ALIGN[textState.textBaseline];\n var strokeWidth = strokeState && strokeState.lineWidth ? strokeState.lineWidth : 0;\n\n var anchorX = align * label.width / pixelRatio + 2 * (0.5 - align) * strokeWidth;\n var anchorY = baseline * label.height / pixelRatio + 2 * (0.5 - baseline) * strokeWidth;\n this.instructions.push([CanvasInstruction.DRAW_IMAGE, begin, end,\n label, (anchorX - this.textOffsetX_) * pixelRatio, (anchorY - this.textOffsetY_) * pixelRatio,\n this.declutterGroup_, label.height, 1, 0, 0, this.textRotateWithView_, this.textRotation_,\n 1, label.width,\n textState.padding == defaultPadding ?\n defaultPadding : textState.padding.map(function(p) {\n return p * pixelRatio;\n }),\n !!textState.backgroundFill, !!textState.backgroundStroke\n ]);\n this.hitDetectionInstructions.push([CanvasInstruction.DRAW_IMAGE, begin, end,\n label, (anchorX - this.textOffsetX_) * pixelRatio, (anchorY - this.textOffsetY_) * pixelRatio,\n this.declutterGroup_, label.height, 1, 0, 0, this.textRotateWithView_, this.textRotation_,\n 1 / pixelRatio, label.width, textState.padding,\n !!textState.backgroundFill, !!textState.backgroundStroke\n ]);\n };\n\n /**\n * @private\n * @param {number} begin Begin.\n * @param {number} end End.\n * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n */\n CanvasTextReplay.prototype.drawChars_ = function drawChars_ (begin, end, declutterGroup) {\n var strokeState = this.textStrokeState_;\n var textState = this.textState_;\n var fillState = this.textFillState_;\n\n var strokeKey = this.strokeKey_;\n if (strokeState) {\n if (!(strokeKey in this.strokeStates)) {\n this.strokeStates[strokeKey] = /** @type {import(\"../canvas.js\").StrokeState} */ ({\n strokeStyle: strokeState.strokeStyle,\n lineCap: strokeState.lineCap,\n lineDashOffset: strokeState.lineDashOffset,\n lineWidth: strokeState.lineWidth,\n lineJoin: strokeState.lineJoin,\n miterLimit: strokeState.miterLimit,\n lineDash: strokeState.lineDash\n });\n }\n }\n var textKey = this.textKey_;\n if (!(this.textKey_ in this.textStates)) {\n this.textStates[this.textKey_] = /** @type {import(\"../canvas.js\").TextState} */ ({\n font: textState.font,\n textAlign: textState.textAlign || defaultTextAlign,\n scale: textState.scale\n });\n }\n var fillKey = this.fillKey_;\n if (fillState) {\n if (!(fillKey in this.fillStates)) {\n this.fillStates[fillKey] = /** @type {import(\"../canvas.js\").FillState} */ ({\n fillStyle: fillState.fillStyle\n });\n }\n }\n\n var pixelRatio = this.pixelRatio;\n var baseline = TEXT_ALIGN[textState.textBaseline];\n\n var offsetY = this.textOffsetY_ * pixelRatio;\n var text = this.text_;\n var font = textState.font;\n var textScale = textState.scale;\n var strokeWidth = strokeState ? strokeState.lineWidth * textScale / 2 : 0;\n var widths = this.widths_[font];\n if (!widths) {\n this.widths_[font] = widths = {};\n }\n this.instructions.push([CanvasInstruction.DRAW_CHARS,\n begin, end, baseline, declutterGroup,\n textState.overflow, fillKey, textState.maxAngle,\n function(text) {\n var width = widths[text];\n if (!width) {\n width = widths[text] = measureTextWidth(font, text);\n }\n return width * textScale * pixelRatio;\n },\n offsetY, strokeKey, strokeWidth * pixelRatio, text, textKey, 1\n ]);\n this.hitDetectionInstructions.push([CanvasInstruction.DRAW_CHARS,\n begin, end, baseline, declutterGroup,\n textState.overflow, fillKey, textState.maxAngle,\n function(text) {\n var width = widths[text];\n if (!width) {\n width = widths[text] = measureTextWidth(font, text);\n }\n return width * textScale;\n },\n offsetY, strokeKey, strokeWidth, text, textKey, 1 / pixelRatio\n ]);\n };\n\n /**\n * @inheritDoc\n */\n CanvasTextReplay.prototype.setTextStyle = function setTextStyle (textStyle, declutterGroup) {\n var textState, fillState, strokeState;\n if (!textStyle) {\n this.text_ = '';\n } else {\n this.declutterGroup_ = /** @type {import(\"../canvas.js\").DeclutterGroup} */ (declutterGroup);\n\n var textFillStyle = textStyle.getFill();\n if (!textFillStyle) {\n fillState = this.textFillState_ = null;\n } else {\n fillState = this.textFillState_;\n if (!fillState) {\n fillState = this.textFillState_ = /** @type {import(\"../canvas.js\").FillState} */ ({});\n }\n fillState.fillStyle = asColorLike(\n textFillStyle.getColor() || defaultFillStyle);\n }\n\n var textStrokeStyle = textStyle.getStroke();\n if (!textStrokeStyle) {\n strokeState = this.textStrokeState_ = null;\n } else {\n strokeState = this.textStrokeState_;\n if (!strokeState) {\n strokeState = this.textStrokeState_ = /** @type {import(\"../canvas.js\").StrokeState} */ ({});\n }\n var lineDash = textStrokeStyle.getLineDash();\n var lineDashOffset = textStrokeStyle.getLineDashOffset();\n var lineWidth = textStrokeStyle.getWidth();\n var miterLimit = textStrokeStyle.getMiterLimit();\n strokeState.lineCap = textStrokeStyle.getLineCap() || defaultLineCap;\n strokeState.lineDash = lineDash ? lineDash.slice() : defaultLineDash;\n strokeState.lineDashOffset =\n lineDashOffset === undefined ? defaultLineDashOffset : lineDashOffset;\n strokeState.lineJoin = textStrokeStyle.getLineJoin() || defaultLineJoin;\n strokeState.lineWidth =\n lineWidth === undefined ? defaultLineWidth : lineWidth;\n strokeState.miterLimit =\n miterLimit === undefined ? defaultMiterLimit : miterLimit;\n strokeState.strokeStyle = asColorLike(\n textStrokeStyle.getColor() || defaultStrokeStyle);\n }\n\n textState = this.textState_;\n var font = textStyle.getFont() || defaultFont;\n checkFont(font);\n var textScale = textStyle.getScale();\n textState.overflow = textStyle.getOverflow();\n textState.font = font;\n textState.maxAngle = textStyle.getMaxAngle();\n textState.placement = textStyle.getPlacement();\n textState.textAlign = textStyle.getTextAlign();\n textState.textBaseline = textStyle.getTextBaseline() || defaultTextBaseline;\n textState.backgroundFill = textStyle.getBackgroundFill();\n textState.backgroundStroke = textStyle.getBackgroundStroke();\n textState.padding = textStyle.getPadding() || defaultPadding;\n textState.scale = textScale === undefined ? 1 : textScale;\n\n var textOffsetX = textStyle.getOffsetX();\n var textOffsetY = textStyle.getOffsetY();\n var textRotateWithView = textStyle.getRotateWithView();\n var textRotation = textStyle.getRotation();\n this.text_ = textStyle.getText() || '';\n this.textOffsetX_ = textOffsetX === undefined ? 0 : textOffsetX;\n this.textOffsetY_ = textOffsetY === undefined ? 0 : textOffsetY;\n this.textRotateWithView_ = textRotateWithView === undefined ? false : textRotateWithView;\n this.textRotation_ = textRotation === undefined ? 0 : textRotation;\n\n this.strokeKey_ = strokeState ?\n (typeof strokeState.strokeStyle == 'string' ? strokeState.strokeStyle : getUid(strokeState.strokeStyle)) +\n strokeState.lineCap + strokeState.lineDashOffset + '|' + strokeState.lineWidth +\n strokeState.lineJoin + strokeState.miterLimit + '[' + strokeState.lineDash.join() + ']' :\n '';\n this.textKey_ = textState.font + textState.scale + (textState.textAlign || '?');\n this.fillKey_ = fillState ?\n (typeof fillState.fillStyle == 'string' ? fillState.fillStyle : ('|' + getUid(fillState.fillStyle))) :\n '';\n }\n };\n\n return CanvasTextReplay;\n}(CanvasReplay));\n\n\n/**\n * @param {string} font Font to use for measuring.\n * @param {Array<string>} lines Lines to measure.\n * @param {Array<number>} widths Array will be populated with the widths of\n * each line.\n * @return {number} Width of the whole text.\n */\nexport function measureTextWidths(font, lines, widths) {\n var numLines = lines.length;\n var width = 0;\n for (var i = 0; i < numLines; ++i) {\n var currentWidth = measureTextWidth(font, lines[i]);\n width = Math.max(width, currentWidth);\n widths.push(currentWidth);\n }\n return width;\n}\n\n\nexport default CanvasTextReplay;\n\n//# sourceMappingURL=TextReplay.js.map","/**\n * @module ol/render/canvas/ReplayGroup\n */\n\nimport {numberSafeCompareFunction} from '../../array.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {buffer, createEmpty, extendCoordinate} from '../../extent.js';\nimport {transform2D} from '../../geom/flat/transform.js';\nimport {isEmpty} from '../../obj.js';\nimport ReplayGroup from '../ReplayGroup.js';\nimport ReplayType from '../ReplayType.js';\nimport CanvasReplay from './Replay.js';\nimport CanvasImageReplay from './ImageReplay.js';\nimport CanvasLineStringReplay from './LineStringReplay.js';\nimport CanvasPolygonReplay from './PolygonReplay.js';\nimport CanvasTextReplay from './TextReplay.js';\nimport {ORDER} from '../replay.js';\nimport {create as createTransform, compose as composeTransform} from '../../transform.js';\n\n\n/**\n * @type {Object<ReplayType, typeof CanvasReplay>}\n */\nvar BATCH_CONSTRUCTORS = {\n 'Circle': CanvasPolygonReplay,\n 'Default': CanvasReplay,\n 'Image': CanvasImageReplay,\n 'LineString': CanvasLineStringReplay,\n 'Polygon': CanvasPolygonReplay,\n 'Text': CanvasTextReplay\n};\n\n\nvar CanvasReplayGroup = /*@__PURE__*/(function (ReplayGroup) {\n function CanvasReplayGroup(\n tolerance,\n maxExtent,\n resolution,\n pixelRatio,\n overlaps,\n declutterTree,\n opt_renderBuffer\n ) {\n ReplayGroup.call(this);\n\n /**\n * Declutter tree.\n * @private\n */\n this.declutterTree_ = declutterTree;\n\n /**\n * @type {import(\"../canvas.js\").DeclutterGroup}\n * @private\n */\n this.declutterGroup_ = null;\n\n /**\n * @private\n * @type {number}\n */\n this.tolerance_ = tolerance;\n\n /**\n * @private\n * @type {import(\"../../extent.js\").Extent}\n */\n this.maxExtent_ = maxExtent;\n\n /**\n * @private\n * @type {boolean}\n */\n this.overlaps_ = overlaps;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelRatio_ = pixelRatio;\n\n /**\n * @private\n * @type {number}\n */\n this.resolution_ = resolution;\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.renderBuffer_ = opt_renderBuffer;\n\n /**\n * @private\n * @type {!Object<string, !Object<ReplayType, CanvasReplay>>}\n */\n this.replaysByZIndex_ = {};\n\n /**\n * @private\n * @type {CanvasRenderingContext2D}\n */\n this.hitDetectionContext_ = createCanvasContext2D(1, 1);\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.hitDetectionTransform_ = createTransform();\n }\n\n if ( ReplayGroup ) CanvasReplayGroup.__proto__ = ReplayGroup;\n CanvasReplayGroup.prototype = Object.create( ReplayGroup && ReplayGroup.prototype );\n CanvasReplayGroup.prototype.constructor = CanvasReplayGroup;\n\n /**\n * @inheritDoc\n */\n CanvasReplayGroup.prototype.addDeclutter = function addDeclutter (group) {\n var declutter = null;\n if (this.declutterTree_) {\n if (group) {\n declutter = this.declutterGroup_;\n /** @type {number} */ (declutter[4])++;\n } else {\n declutter = this.declutterGroup_ = createEmpty();\n declutter.push(1);\n }\n }\n return declutter;\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n */\n CanvasReplayGroup.prototype.clip = function clip (context, transform) {\n var flatClipCoords = this.getClipCoords(transform);\n context.beginPath();\n context.moveTo(flatClipCoords[0], flatClipCoords[1]);\n context.lineTo(flatClipCoords[2], flatClipCoords[3]);\n context.lineTo(flatClipCoords[4], flatClipCoords[5]);\n context.lineTo(flatClipCoords[6], flatClipCoords[7]);\n context.clip();\n };\n\n /**\n * @param {Array<ReplayType>} replays Replays.\n * @return {boolean} Has replays of the provided types.\n */\n CanvasReplayGroup.prototype.hasReplays = function hasReplays (replays) {\n for (var zIndex in this.replaysByZIndex_) {\n var candidates = this.replaysByZIndex_[zIndex];\n for (var i = 0, ii = replays.length; i < ii; ++i) {\n if (replays[i] in candidates) {\n return true;\n }\n }\n }\n return false;\n };\n\n /**\n * FIXME empty description for jsdoc\n */\n CanvasReplayGroup.prototype.finish = function finish () {\n for (var zKey in this.replaysByZIndex_) {\n var replays = this.replaysByZIndex_[zKey];\n for (var replayKey in replays) {\n replays[replayKey].finish();\n }\n }\n };\n\n /**\n * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {number} resolution Resolution.\n * @param {number} rotation Rotation.\n * @param {number} hitTolerance Hit tolerance in pixels.\n * @param {Object<string, boolean>} skippedFeaturesHash Ids of features to skip.\n * @param {function((import(\"../../Feature.js\").default|import(\"../Feature.js\").default)): T} callback Feature callback.\n * @param {Object<string, import(\"../canvas.js\").DeclutterGroup>} declutterReplays Declutter replays.\n * @return {T|undefined} Callback result.\n * @template T\n */\n CanvasReplayGroup.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (\n coordinate,\n resolution,\n rotation,\n hitTolerance,\n skippedFeaturesHash,\n callback,\n declutterReplays\n ) {\n\n hitTolerance = Math.round(hitTolerance);\n var contextSize = hitTolerance * 2 + 1;\n var transform = composeTransform(this.hitDetectionTransform_,\n hitTolerance + 0.5, hitTolerance + 0.5,\n 1 / resolution, -1 / resolution,\n -rotation,\n -coordinate[0], -coordinate[1]);\n var context = this.hitDetectionContext_;\n\n if (context.canvas.width !== contextSize || context.canvas.height !== contextSize) {\n context.canvas.width = contextSize;\n context.canvas.height = contextSize;\n } else {\n context.clearRect(0, 0, contextSize, contextSize);\n }\n\n /**\n * @type {import(\"../../extent.js\").Extent}\n */\n var hitExtent;\n if (this.renderBuffer_ !== undefined) {\n hitExtent = createEmpty();\n extendCoordinate(hitExtent, coordinate);\n buffer(hitExtent, resolution * (this.renderBuffer_ + hitTolerance), hitExtent);\n }\n\n var mask = getCircleArray(hitTolerance);\n var declutteredFeatures;\n if (this.declutterTree_) {\n declutteredFeatures = this.declutterTree_.all().map(function(entry) {\n return entry.value;\n });\n }\n\n var replayType;\n\n /**\n * @param {import(\"../../Feature.js\").default|import(\"../Feature.js\").default} feature Feature.\n * @return {?} Callback result.\n */\n function featureCallback(feature) {\n var imageData = context.getImageData(0, 0, contextSize, contextSize).data;\n for (var i = 0; i < contextSize; i++) {\n for (var j = 0; j < contextSize; j++) {\n if (mask[i][j]) {\n if (imageData[(j * contextSize + i) * 4 + 3] > 0) {\n var result = (void 0);\n if (!(declutteredFeatures && (replayType == ReplayType.IMAGE || replayType == ReplayType.TEXT)) ||\n declutteredFeatures.indexOf(feature) !== -1) {\n result = callback(feature);\n }\n if (result) {\n return result;\n } else {\n context.clearRect(0, 0, contextSize, contextSize);\n return undefined;\n }\n }\n }\n }\n }\n }\n\n /** @type {Array<number>} */\n var zs = Object.keys(this.replaysByZIndex_).map(Number);\n zs.sort(numberSafeCompareFunction);\n\n var i, j, replays, replay, result;\n for (i = zs.length - 1; i >= 0; --i) {\n var zIndexKey = zs[i].toString();\n replays = this.replaysByZIndex_[zIndexKey];\n for (j = ORDER.length - 1; j >= 0; --j) {\n replayType = ORDER[j];\n replay = replays[replayType];\n if (replay !== undefined) {\n if (declutterReplays &&\n (replayType == ReplayType.IMAGE || replayType == ReplayType.TEXT)) {\n var declutter = declutterReplays[zIndexKey];\n if (!declutter) {\n declutterReplays[zIndexKey] = [replay, transform.slice(0)];\n } else {\n declutter.push(replay, transform.slice(0));\n }\n } else {\n result = replay.replayHitDetection(context, transform, rotation,\n skippedFeaturesHash, featureCallback, hitExtent);\n if (result) {\n return result;\n }\n }\n }\n }\n }\n return undefined;\n };\n\n /**\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @return {Array<number>} Clip coordinates.\n */\n CanvasReplayGroup.prototype.getClipCoords = function getClipCoords (transform) {\n var maxExtent = this.maxExtent_;\n var minX = maxExtent[0];\n var minY = maxExtent[1];\n var maxX = maxExtent[2];\n var maxY = maxExtent[3];\n var flatClipCoords = [minX, minY, minX, maxY, maxX, maxY, maxX, minY];\n transform2D(\n flatClipCoords, 0, 8, 2, transform, flatClipCoords);\n return flatClipCoords;\n };\n\n /**\n * @inheritDoc\n */\n CanvasReplayGroup.prototype.getReplay = function getReplay (zIndex, replayType) {\n var zIndexKey = zIndex !== undefined ? zIndex.toString() : '0';\n var replays = this.replaysByZIndex_[zIndexKey];\n if (replays === undefined) {\n replays = {};\n this.replaysByZIndex_[zIndexKey] = replays;\n }\n var replay = replays[replayType];\n if (replay === undefined) {\n var Constructor = BATCH_CONSTRUCTORS[replayType];\n replay = new Constructor(this.tolerance_, this.maxExtent_,\n this.resolution_, this.pixelRatio_, this.overlaps_, this.declutterTree_);\n replays[replayType] = replay;\n }\n return replay;\n };\n\n /**\n * @return {Object<string, Object<ReplayType, CanvasReplay>>} Replays.\n */\n CanvasReplayGroup.prototype.getReplays = function getReplays () {\n return this.replaysByZIndex_;\n };\n\n /**\n * @inheritDoc\n */\n CanvasReplayGroup.prototype.isEmpty = function isEmpty$1 () {\n return isEmpty(this.replaysByZIndex_);\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {number} viewRotation View rotation.\n * @param {Object<string, boolean>} skippedFeaturesHash Ids of features to skip.\n * @param {boolean} snapToPixel Snap point symbols and test to integer pixel.\n * @param {Array<ReplayType>=} opt_replayTypes Ordered replay types to replay.\n * Default is {@link module:ol/render/replay~ORDER}\n * @param {Object<string, import(\"../canvas.js\").DeclutterGroup>=} opt_declutterReplays Declutter replays.\n */\n CanvasReplayGroup.prototype.replay = function replay (\n context,\n transform,\n viewRotation,\n skippedFeaturesHash,\n snapToPixel,\n opt_replayTypes,\n opt_declutterReplays\n ) {\n\n /** @type {Array<number>} */\n var zs = Object.keys(this.replaysByZIndex_).map(Number);\n zs.sort(numberSafeCompareFunction);\n\n // setup clipping so that the parts of over-simplified geometries are not\n // visible outside the current extent when panning\n context.save();\n this.clip(context, transform);\n\n var replayTypes = opt_replayTypes ? opt_replayTypes : ORDER;\n var i, ii, j, jj, replays, replay;\n for (i = 0, ii = zs.length; i < ii; ++i) {\n var zIndexKey = zs[i].toString();\n replays = this.replaysByZIndex_[zIndexKey];\n for (j = 0, jj = replayTypes.length; j < jj; ++j) {\n var replayType = replayTypes[j];\n replay = replays[replayType];\n if (replay !== undefined) {\n if (opt_declutterReplays &&\n (replayType == ReplayType.IMAGE || replayType == ReplayType.TEXT)) {\n var declutter = opt_declutterReplays[zIndexKey];\n if (!declutter) {\n opt_declutterReplays[zIndexKey] = [replay, transform.slice(0)];\n } else {\n declutter.push(replay, transform.slice(0));\n }\n } else {\n replay.replay(context, transform, viewRotation, skippedFeaturesHash, snapToPixel);\n }\n }\n }\n }\n\n context.restore();\n };\n\n return CanvasReplayGroup;\n}(ReplayGroup));\n\n\n/**\n * This cache is used for storing calculated pixel circles for increasing performance.\n * It is a static property to allow each Replaygroup to access it.\n * @type {Object<number, Array<Array<(boolean|undefined)>>>}\n */\nvar circleArrayCache = {\n 0: [[true]]\n};\n\n\n/**\n * This method fills a row in the array from the given coordinate to the\n * middle with `true`.\n * @param {Array<Array<(boolean|undefined)>>} array The array that will be altered.\n * @param {number} x X coordinate.\n * @param {number} y Y coordinate.\n */\nfunction fillCircleArrayRowToMiddle(array, x, y) {\n var i;\n var radius = Math.floor(array.length / 2);\n if (x >= radius) {\n for (i = radius; i < x; i++) {\n array[i][y] = true;\n }\n } else if (x < radius) {\n for (i = x + 1; i < radius; i++) {\n array[i][y] = true;\n }\n }\n}\n\n\n/**\n * This methods creates a circle inside a fitting array. Points inside the\n * circle are marked by true, points on the outside are undefined.\n * It uses the midpoint circle algorithm.\n * A cache is used to increase performance.\n * @param {number} radius Radius.\n * @returns {Array<Array<(boolean|undefined)>>} An array with marked circle points.\n */\nexport function getCircleArray(radius) {\n if (circleArrayCache[radius] !== undefined) {\n return circleArrayCache[radius];\n }\n\n var arraySize = radius * 2 + 1;\n var arr = new Array(arraySize);\n for (var i = 0; i < arraySize; i++) {\n arr[i] = new Array(arraySize);\n }\n\n var x = radius;\n var y = 0;\n var error = 0;\n\n while (x >= y) {\n fillCircleArrayRowToMiddle(arr, radius + x, radius + y);\n fillCircleArrayRowToMiddle(arr, radius + y, radius + x);\n fillCircleArrayRowToMiddle(arr, radius - y, radius + x);\n fillCircleArrayRowToMiddle(arr, radius - x, radius + y);\n fillCircleArrayRowToMiddle(arr, radius - x, radius - y);\n fillCircleArrayRowToMiddle(arr, radius - y, radius - x);\n fillCircleArrayRowToMiddle(arr, radius + y, radius - x);\n fillCircleArrayRowToMiddle(arr, radius + x, radius - y);\n\n y++;\n error += 1 + 2 * y;\n if (2 * (error - x) + 1 > 0) {\n x -= 1;\n error += 1 - 2 * x;\n }\n }\n\n circleArrayCache[radius] = arr;\n return arr;\n}\n\n\n/**\n * @param {!Object<string, Array<*>>} declutterReplays Declutter replays.\n * @param {CanvasRenderingContext2D} context Context.\n * @param {number} rotation Rotation.\n * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n */\nexport function replayDeclutter(declutterReplays, context, rotation, snapToPixel) {\n var zs = Object.keys(declutterReplays).map(Number).sort(numberSafeCompareFunction);\n var skippedFeatureUids = {};\n for (var z = 0, zz = zs.length; z < zz; ++z) {\n var replayData = declutterReplays[zs[z].toString()];\n for (var i = 0, ii = replayData.length; i < ii;) {\n var replay = replayData[i++];\n var transform = replayData[i++];\n replay.replay(context, transform, rotation, skippedFeatureUids, snapToPixel);\n }\n }\n}\n\n\nexport default CanvasReplayGroup;\n\n//# sourceMappingURL=ReplayGroup.js.map","/**\n * @module ol/renderer/vector\n */\nimport {getUid} from '../util.js';\nimport ImageState from '../ImageState.js';\nimport GeometryType from '../geom/GeometryType.js';\nimport ReplayType from '../render/ReplayType.js';\n\n\n/**\n * Tolerance for geometry simplification in device pixels.\n * @type {number}\n */\nvar SIMPLIFY_TOLERANCE = 0.5;\n\n\n/**\n * @const\n * @type {Object<import(\"../geom/GeometryType.js\").default,\n * function(import(\"../render/ReplayGroup.js\").default, import(\"../geom/Geometry.js\").default,\n * import(\"../style/Style.js\").default, Object)>}\n */\nvar GEOMETRY_RENDERERS = {\n 'Point': renderPointGeometry,\n 'LineString': renderLineStringGeometry,\n 'Polygon': renderPolygonGeometry,\n 'MultiPoint': renderMultiPointGeometry,\n 'MultiLineString': renderMultiLineStringGeometry,\n 'MultiPolygon': renderMultiPolygonGeometry,\n 'GeometryCollection': renderGeometryCollectionGeometry,\n 'Circle': renderCircleGeometry\n};\n\n\n/**\n * @param {import(\"../Feature.js\").FeatureLike} feature1 Feature 1.\n * @param {import(\"../Feature.js\").FeatureLike} feature2 Feature 2.\n * @return {number} Order.\n */\nexport function defaultOrder(feature1, feature2) {\n return parseInt(getUid(feature1), 10) - parseInt(getUid(feature2), 10);\n}\n\n\n/**\n * @param {number} resolution Resolution.\n * @param {number} pixelRatio Pixel ratio.\n * @return {number} Squared pixel tolerance.\n */\nexport function getSquaredTolerance(resolution, pixelRatio) {\n var tolerance = getTolerance(resolution, pixelRatio);\n return tolerance * tolerance;\n}\n\n\n/**\n * @param {number} resolution Resolution.\n * @param {number} pixelRatio Pixel ratio.\n * @return {number} Pixel tolerance.\n */\nexport function getTolerance(resolution, pixelRatio) {\n return SIMPLIFY_TOLERANCE * resolution / pixelRatio;\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/Circle.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderCircleGeometry(replayGroup, geometry, style, feature) {\n var fillStyle = style.getFill();\n var strokeStyle = style.getStroke();\n if (fillStyle || strokeStyle) {\n var circleReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.CIRCLE);\n circleReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n circleReplay.drawCircle(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {function(this: T, import(\"../events/Event.js\").default)} listener Listener function.\n * @param {T} thisArg Value to use as `this` when executing `listener`.\n * @return {boolean} `true` if style is loading.\n * @template T\n */\nexport function renderFeature(replayGroup, feature, style, squaredTolerance, listener, thisArg) {\n var loading = false;\n var imageStyle = style.getImage();\n if (imageStyle) {\n var imageState = imageStyle.getImageState();\n if (imageState == ImageState.LOADED || imageState == ImageState.ERROR) {\n imageStyle.unlistenImageChange(listener, thisArg);\n } else {\n if (imageState == ImageState.IDLE) {\n imageStyle.load();\n }\n imageState = imageStyle.getImageState();\n imageStyle.listenImageChange(listener, thisArg);\n loading = true;\n }\n }\n renderFeatureInternal(replayGroup, feature, style, squaredTolerance);\n\n return loading;\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {number} squaredTolerance Squared tolerance.\n */\nfunction renderFeatureInternal(replayGroup, feature, style, squaredTolerance) {\n var geometry = style.getGeometryFunction()(feature);\n if (!geometry) {\n return;\n }\n var simplifiedGeometry = geometry.getSimplifiedGeometry(squaredTolerance);\n var renderer = style.getRenderer();\n if (renderer) {\n renderGeometry(replayGroup, simplifiedGeometry, style, feature);\n } else {\n var geometryRenderer = GEOMETRY_RENDERERS[simplifiedGeometry.getType()];\n geometryRenderer(replayGroup, simplifiedGeometry, style, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/Geometry.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderGeometry(replayGroup, geometry, style, feature) {\n if (geometry.getType() == GeometryType.GEOMETRY_COLLECTION) {\n var geometries = /** @type {import(\"../geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n for (var i = 0, ii = geometries.length; i < ii; ++i) {\n renderGeometry(replayGroup, geometries[i], style, feature);\n }\n return;\n }\n var replay = replayGroup.getReplay(style.getZIndex(), ReplayType.DEFAULT);\n replay.drawCustom(/** @type {import(\"../geom/SimpleGeometry.js\").default} */ (geometry), feature, style.getRenderer());\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/GeometryCollection.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderGeometryCollectionGeometry(replayGroup, geometry, style, feature) {\n var geometries = geometry.getGeometriesArray();\n var i, ii;\n for (i = 0, ii = geometries.length; i < ii; ++i) {\n var geometryRenderer =\n GEOMETRY_RENDERERS[geometries[i].getType()];\n geometryRenderer(replayGroup, geometries[i], style, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/LineString.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderLineStringGeometry(replayGroup, geometry, style, feature) {\n var strokeStyle = style.getStroke();\n if (strokeStyle) {\n var lineStringReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.LINE_STRING);\n lineStringReplay.setFillStrokeStyle(null, strokeStyle);\n lineStringReplay.drawLineString(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/MultiLineString.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderMultiLineStringGeometry(replayGroup, geometry, style, feature) {\n var strokeStyle = style.getStroke();\n if (strokeStyle) {\n var lineStringReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.LINE_STRING);\n lineStringReplay.setFillStrokeStyle(null, strokeStyle);\n lineStringReplay.drawMultiLineString(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/MultiPolygon.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderMultiPolygonGeometry(replayGroup, geometry, style, feature) {\n var fillStyle = style.getFill();\n var strokeStyle = style.getStroke();\n if (strokeStyle || fillStyle) {\n var polygonReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.POLYGON);\n polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n polygonReplay.drawMultiPolygon(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/Point.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderPointGeometry(replayGroup, geometry, style, feature) {\n var imageStyle = style.getImage();\n if (imageStyle) {\n if (imageStyle.getImageState() != ImageState.LOADED) {\n return;\n }\n var imageReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.IMAGE);\n imageReplay.setImageStyle(imageStyle, replayGroup.addDeclutter(false));\n imageReplay.drawPoint(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(!!imageStyle));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/MultiPoint.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderMultiPointGeometry(replayGroup, geometry, style, feature) {\n var imageStyle = style.getImage();\n if (imageStyle) {\n if (imageStyle.getImageState() != ImageState.LOADED) {\n return;\n }\n var imageReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.IMAGE);\n imageReplay.setImageStyle(imageStyle, replayGroup.addDeclutter(false));\n imageReplay.drawMultiPoint(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(!!imageStyle));\n textReplay.drawText(geometry, feature);\n }\n}\n\n\n/**\n * @param {import(\"../render/ReplayGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/Polygon.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderPolygonGeometry(replayGroup, geometry, style, feature) {\n var fillStyle = style.getFill();\n var strokeStyle = style.getStroke();\n if (fillStyle || strokeStyle) {\n var polygonReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.POLYGON);\n polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n polygonReplay.drawPolygon(geometry, feature);\n }\n var textStyle = style.getText();\n if (textStyle) {\n var textReplay = replayGroup.getReplay(style.getZIndex(), ReplayType.TEXT);\n textReplay.setTextStyle(textStyle, replayGroup.addDeclutter(false));\n textReplay.drawText(geometry, feature);\n }\n}\n\n//# sourceMappingURL=vector.js.map","/**\n * @module ol/renderer/canvas/VectorLayer\n */\nimport {getUid} from '../../util.js';\nimport LayerType from '../../LayerType.js';\nimport ViewHint from '../../ViewHint.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {listen, unlisten} from '../../events.js';\nimport EventType from '../../events/EventType.js';\nimport rbush from 'rbush';\nimport {buffer, createEmpty, containsExtent, getWidth} from '../../extent.js';\nimport RenderEventType from '../../render/EventType.js';\nimport {labelCache, rotateAtOffset} from '../../render/canvas.js';\nimport CanvasReplayGroup from '../../render/canvas/ReplayGroup.js';\nimport CanvasLayerRenderer from './Layer.js';\nimport {defaultOrder as defaultRenderOrder, getTolerance as getRenderTolerance, getSquaredTolerance as getSquaredRenderTolerance, renderFeature} from '../vector.js';\n\n/**\n * @classdesc\n * Canvas renderer for vector layers.\n * @api\n */\nvar CanvasVectorLayerRenderer = /*@__PURE__*/(function (CanvasLayerRenderer) {\n function CanvasVectorLayerRenderer(vectorLayer) {\n\n CanvasLayerRenderer.call(this, vectorLayer);\n\n /**\n * Declutter tree.\n * @private\n */\n this.declutterTree_ = vectorLayer.getDeclutter() ? rbush(9, undefined) : null;\n\n /**\n * @private\n * @type {boolean}\n */\n this.dirty_ = false;\n\n /**\n * @private\n * @type {number}\n */\n this.renderedRevision_ = -1;\n\n /**\n * @private\n * @type {number}\n */\n this.renderedResolution_ = NaN;\n\n /**\n * @private\n * @type {import(\"../../extent.js\").Extent}\n */\n this.renderedExtent_ = createEmpty();\n\n /**\n * @private\n * @type {function(import(\"../../Feature.js\").default, import(\"../../Feature.js\").default): number|null}\n */\n this.renderedRenderOrder_ = null;\n\n /**\n * @private\n * @type {import(\"../../render/canvas/ReplayGroup.js\").default}\n */\n this.replayGroup_ = null;\n\n /**\n * A new replay group had to be created by `prepareFrame()`\n * @type {boolean}\n */\n this.replayGroupChanged = true;\n\n /**\n * @type {CanvasRenderingContext2D}\n */\n this.context = createCanvasContext2D();\n\n listen(labelCache, EventType.CLEAR, this.handleFontsChanged_, this);\n\n }\n\n if ( CanvasLayerRenderer ) CanvasVectorLayerRenderer.__proto__ = CanvasLayerRenderer;\n CanvasVectorLayerRenderer.prototype = Object.create( CanvasLayerRenderer && CanvasLayerRenderer.prototype );\n CanvasVectorLayerRenderer.prototype.constructor = CanvasVectorLayerRenderer;\n\n /**\n * @inheritDoc\n */\n CanvasVectorLayerRenderer.prototype.disposeInternal = function disposeInternal () {\n unlisten(labelCache, EventType.CLEAR, this.handleFontsChanged_, this);\n CanvasLayerRenderer.prototype.disposeInternal.call(this);\n };\n\n /**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @param {import(\"../../layer/Layer.js\").State} layerState Layer state.\n */\n CanvasVectorLayerRenderer.prototype.compose = function compose (context, frameState, layerState) {\n var extent = frameState.extent;\n var pixelRatio = frameState.pixelRatio;\n var skippedFeatureUids = layerState.managed ?\n frameState.skippedFeatureUids : {};\n var viewState = frameState.viewState;\n var projection = viewState.projection;\n var rotation = viewState.rotation;\n var projectionExtent = projection.getExtent();\n var vectorSource = /** @type {import(\"../../source/Vector.js\").default} */ (this.getLayer().getSource());\n\n var transform = this.getTransform(frameState, 0);\n\n // clipped rendering if layer extent is set\n var clipExtent = layerState.extent;\n var clipped = clipExtent !== undefined;\n if (clipped) {\n this.clip(context, frameState, /** @type {import(\"../../extent.js\").Extent} */ (clipExtent));\n }\n var replayGroup = this.replayGroup_;\n if (replayGroup && !replayGroup.isEmpty()) {\n if (this.declutterTree_) {\n this.declutterTree_.clear();\n }\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var drawOffsetX = 0;\n var drawOffsetY = 0;\n var replayContext;\n var transparentLayer = layerState.opacity !== 1;\n var hasRenderListeners = layer.hasListener(RenderEventType.RENDER);\n if (transparentLayer || hasRenderListeners) {\n var drawWidth = context.canvas.width;\n var drawHeight = context.canvas.height;\n if (rotation) {\n var drawSize = Math.round(Math.sqrt(drawWidth * drawWidth + drawHeight * drawHeight));\n drawOffsetX = (drawSize - drawWidth) / 2;\n drawOffsetY = (drawSize - drawHeight) / 2;\n drawWidth = drawHeight = drawSize;\n }\n // resize and clear\n this.context.canvas.width = drawWidth;\n this.context.canvas.height = drawHeight;\n replayContext = this.context;\n } else {\n replayContext = context;\n }\n\n var alpha = replayContext.globalAlpha;\n if (!transparentLayer) {\n // for performance reasons, context.save / context.restore is not used\n // to save and restore the transformation matrix and the opacity.\n // see http://jsperf.com/context-save-restore-versus-variable\n replayContext.globalAlpha = layerState.opacity;\n }\n\n if (replayContext != context) {\n replayContext.translate(drawOffsetX, drawOffsetY);\n }\n\n var viewHints = frameState.viewHints;\n var snapToPixel = !(viewHints[ViewHint.ANIMATING] || viewHints[ViewHint.INTERACTING]);\n var width = frameState.size[0] * pixelRatio;\n var height = frameState.size[1] * pixelRatio;\n rotateAtOffset(replayContext, -rotation,\n width / 2, height / 2);\n replayGroup.replay(replayContext, transform, rotation, skippedFeatureUids, snapToPixel);\n if (vectorSource.getWrapX() && projection.canWrapX() &&\n !containsExtent(projectionExtent, extent)) {\n var startX = extent[0];\n var worldWidth = getWidth(projectionExtent);\n var world = 0;\n var offsetX;\n while (startX < projectionExtent[0]) {\n --world;\n offsetX = worldWidth * world;\n transform = this.getTransform(frameState, offsetX);\n replayGroup.replay(replayContext, transform, rotation, skippedFeatureUids, snapToPixel);\n startX += worldWidth;\n }\n world = 0;\n startX = extent[2];\n while (startX > projectionExtent[2]) {\n ++world;\n offsetX = worldWidth * world;\n transform = this.getTransform(frameState, offsetX);\n replayGroup.replay(replayContext, transform, rotation, skippedFeatureUids, snapToPixel);\n startX -= worldWidth;\n }\n }\n rotateAtOffset(replayContext, rotation,\n width / 2, height / 2);\n\n if (hasRenderListeners) {\n this.dispatchRenderEvent(replayContext, frameState, transform);\n }\n if (replayContext != context) {\n if (transparentLayer) {\n var mainContextAlpha = context.globalAlpha;\n context.globalAlpha = layerState.opacity;\n context.drawImage(replayContext.canvas, -drawOffsetX, -drawOffsetY);\n context.globalAlpha = mainContextAlpha;\n } else {\n context.drawImage(replayContext.canvas, -drawOffsetX, -drawOffsetY);\n }\n replayContext.translate(-drawOffsetX, -drawOffsetY);\n }\n\n if (!transparentLayer) {\n replayContext.globalAlpha = alpha;\n }\n }\n\n if (clipped) {\n context.restore();\n }\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorLayerRenderer.prototype.composeFrame = function composeFrame (frameState, layerState, context) {\n var transform = this.getTransform(frameState, 0);\n this.preCompose(context, frameState, transform);\n this.compose(context, frameState, layerState);\n this.postCompose(context, frameState, layerState, transform);\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorLayerRenderer.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (coordinate, frameState, hitTolerance, callback, thisArg) {\n if (!this.replayGroup_) {\n return undefined;\n } else {\n var resolution = frameState.viewState.resolution;\n var rotation = frameState.viewState.rotation;\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n /** @type {!Object<string, boolean>} */\n var features = {};\n var result = this.replayGroup_.forEachFeatureAtCoordinate(coordinate, resolution, rotation, hitTolerance, {},\n /**\n * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n * @return {?} Callback result.\n */\n function(feature) {\n var key = getUid(feature);\n if (!(key in features)) {\n features[key] = true;\n return callback.call(thisArg, feature, layer);\n }\n }, null);\n return result;\n }\n };\n\n /**\n * @param {import(\"../../events/Event.js\").default} event Event.\n */\n CanvasVectorLayerRenderer.prototype.handleFontsChanged_ = function handleFontsChanged_ (event) {\n var layer = this.getLayer();\n if (layer.getVisible() && this.replayGroup_) {\n layer.changed();\n }\n };\n\n /**\n * Handle changes in image style state.\n * @param {import(\"../../events/Event.js\").default} event Image style change event.\n * @private\n */\n CanvasVectorLayerRenderer.prototype.handleStyleImageChange_ = function handleStyleImageChange_ (event) {\n this.renderIfReadyAndVisible();\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorLayerRenderer.prototype.prepareFrame = function prepareFrame (frameState, layerState) {\n var vectorLayer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var vectorSource = /** @type {import(\"../../source/Vector.js\").default} */ (vectorLayer.getSource());\n\n var animating = frameState.viewHints[ViewHint.ANIMATING];\n var interacting = frameState.viewHints[ViewHint.INTERACTING];\n var updateWhileAnimating = vectorLayer.getUpdateWhileAnimating();\n var updateWhileInteracting = vectorLayer.getUpdateWhileInteracting();\n\n if (!this.dirty_ && (!updateWhileAnimating && animating) ||\n (!updateWhileInteracting && interacting)) {\n return true;\n }\n\n var frameStateExtent = frameState.extent;\n var viewState = frameState.viewState;\n var projection = viewState.projection;\n var resolution = viewState.resolution;\n var pixelRatio = frameState.pixelRatio;\n var vectorLayerRevision = vectorLayer.getRevision();\n var vectorLayerRenderBuffer = vectorLayer.getRenderBuffer();\n var vectorLayerRenderOrder = vectorLayer.getRenderOrder();\n\n if (vectorLayerRenderOrder === undefined) {\n vectorLayerRenderOrder = defaultRenderOrder;\n }\n\n var extent = buffer(frameStateExtent,\n vectorLayerRenderBuffer * resolution);\n var projectionExtent = viewState.projection.getExtent();\n\n if (vectorSource.getWrapX() && viewState.projection.canWrapX() &&\n !containsExtent(projectionExtent, frameState.extent)) {\n // For the replay group, we need an extent that intersects the real world\n // (-180° to +180°). To support geometries in a coordinate range from -540°\n // to +540°, we add at least 1 world width on each side of the projection\n // extent. If the viewport is wider than the world, we need to add half of\n // the viewport width to make sure we cover the whole viewport.\n var worldWidth = getWidth(projectionExtent);\n var gutter = Math.max(getWidth(extent) / 2, worldWidth);\n extent[0] = projectionExtent[0] - gutter;\n extent[2] = projectionExtent[2] + gutter;\n }\n\n if (!this.dirty_ &&\n this.renderedResolution_ == resolution &&\n this.renderedRevision_ == vectorLayerRevision &&\n this.renderedRenderOrder_ == vectorLayerRenderOrder &&\n containsExtent(this.renderedExtent_, extent)) {\n this.replayGroupChanged = false;\n return true;\n }\n\n this.replayGroup_ = null;\n\n this.dirty_ = false;\n\n var replayGroup = new CanvasReplayGroup(\n getRenderTolerance(resolution, pixelRatio), extent, resolution,\n pixelRatio, vectorSource.getOverlaps(), this.declutterTree_, vectorLayer.getRenderBuffer());\n vectorSource.loadFeatures(extent, resolution, projection);\n /**\n * @param {import(\"../../Feature.js\").default} feature Feature.\n * @this {CanvasVectorLayerRenderer}\n */\n var render = function(feature) {\n var styles;\n var styleFunction = feature.getStyleFunction() || vectorLayer.getStyleFunction();\n if (styleFunction) {\n styles = styleFunction(feature, resolution);\n }\n if (styles) {\n var dirty = this.renderFeature(\n feature, resolution, pixelRatio, styles, replayGroup);\n this.dirty_ = this.dirty_ || dirty;\n }\n }.bind(this);\n if (vectorLayerRenderOrder) {\n /** @type {Array<import(\"../../Feature.js\").default>} */\n var features = [];\n vectorSource.forEachFeatureInExtent(extent,\n /**\n * @param {import(\"../../Feature.js\").default} feature Feature.\n */\n function(feature) {\n features.push(feature);\n });\n features.sort(vectorLayerRenderOrder);\n for (var i = 0, ii = features.length; i < ii; ++i) {\n render(features[i]);\n }\n } else {\n vectorSource.forEachFeatureInExtent(extent, render);\n }\n replayGroup.finish();\n\n this.renderedResolution_ = resolution;\n this.renderedRevision_ = vectorLayerRevision;\n this.renderedRenderOrder_ = vectorLayerRenderOrder;\n this.renderedExtent_ = extent;\n this.replayGroup_ = replayGroup;\n\n this.replayGroupChanged = true;\n return true;\n };\n\n /**\n * @param {import(\"../../Feature.js\").default} feature Feature.\n * @param {number} resolution Resolution.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../../style/Style.js\").default|Array<import(\"../../style/Style.js\").default>} styles The style or array of styles.\n * @param {import(\"../../render/canvas/ReplayGroup.js\").default} replayGroup Replay group.\n * @return {boolean} `true` if an image is loading.\n */\n CanvasVectorLayerRenderer.prototype.renderFeature = function renderFeature$1 (feature, resolution, pixelRatio, styles, replayGroup) {\n if (!styles) {\n return false;\n }\n var loading = false;\n if (Array.isArray(styles)) {\n for (var i = 0, ii = styles.length; i < ii; ++i) {\n loading = renderFeature(\n replayGroup, feature, styles[i],\n getSquaredRenderTolerance(resolution, pixelRatio),\n this.handleStyleImageChange_, this) || loading;\n }\n } else {\n loading = renderFeature(\n replayGroup, feature, styles,\n getSquaredRenderTolerance(resolution, pixelRatio),\n this.handleStyleImageChange_, this);\n }\n return loading;\n };\n\n return CanvasVectorLayerRenderer;\n}(CanvasLayerRenderer));\n\n\n/**\n * Determine if this renderer handles the provided layer.\n * @param {import(\"../../layer/Layer.js\").default} layer The candidate layer.\n * @return {boolean} The renderer can render the layer.\n */\nCanvasVectorLayerRenderer['handles'] = function(layer) {\n return layer.getType() === LayerType.VECTOR;\n};\n\n\n/**\n * Create a layer renderer.\n * @param {import(\"../Map.js\").default} mapRenderer The map renderer.\n * @param {import(\"../../layer/Layer.js\").default} layer The layer to be rendererd.\n * @return {CanvasVectorLayerRenderer} The layer renderer.\n */\nCanvasVectorLayerRenderer['create'] = function(mapRenderer, layer) {\n return new CanvasVectorLayerRenderer(/** @type {import(\"../../layer/Vector.js\").default} */ (layer));\n};\n\n\nexport default CanvasVectorLayerRenderer;\n\n//# sourceMappingURL=VectorLayer.js.map","/**\n * @module ol/layer/VectorTileRenderType\n */\n\n/**\n * @enum {string}\n * Render mode for vector tiles:\n * * `'image'`: Vector tiles are rendered as images. Great performance, but\n * point symbols and texts are always rotated with the view and pixels are\n * scaled during zoom animations.\n * * `'hybrid'`: Polygon and line elements are rendered as images, so pixels\n * are scaled during zoom animations. Point symbols and texts are accurately\n * rendered as vectors and can stay upright on rotated views.\n * * `'vector'`: Vector tiles are rendered as vectors. Most accurate rendering\n * even during animations, but slower performance than the other options.\n * @api\n */\nexport default {\n IMAGE: 'image',\n HYBRID: 'hybrid',\n VECTOR: 'vector'\n};\n\n//# sourceMappingURL=VectorTileRenderType.js.map","/**\n * @module ol/renderer/canvas/VectorTileLayer\n */\nimport {getUid} from '../../util.js';\nimport LayerType from '../../LayerType.js';\nimport TileState from '../../TileState.js';\nimport ViewHint from '../../ViewHint.js';\nimport {createCanvasContext2D} from '../../dom.js';\nimport {listen, unlisten} from '../../events.js';\nimport EventType from '../../events/EventType.js';\nimport rbush from 'rbush';\nimport {buffer, containsCoordinate, equals, getIntersection, getTopLeft, intersects} from '../../extent.js';\nimport VectorTileRenderType from '../../layer/VectorTileRenderType.js';\nimport {equivalent as equivalentProjection} from '../../proj.js';\nimport Units from '../../proj/Units.js';\nimport ReplayType from '../../render/ReplayType.js';\nimport {labelCache, rotateAtOffset} from '../../render/canvas.js';\nimport CanvasReplayGroup, {replayDeclutter} from '../../render/canvas/ReplayGroup.js';\nimport {ORDER} from '../../render/replay.js';\nimport CanvasTileLayerRenderer from './TileLayer.js';\nimport {getSquaredTolerance as getSquaredRenderTolerance, renderFeature} from '../vector.js';\nimport {\n create as createTransform,\n compose as composeTransform,\n reset as resetTransform,\n scale as scaleTransform,\n translate as translateTransform\n} from '../../transform.js';\n\n\n/**\n * @type {!Object<string, Array<import(\"../../render/ReplayType.js\").default>>}\n */\nvar IMAGE_REPLAYS = {\n 'image': [ReplayType.POLYGON, ReplayType.CIRCLE,\n ReplayType.LINE_STRING, ReplayType.IMAGE, ReplayType.TEXT],\n 'hybrid': [ReplayType.POLYGON, ReplayType.LINE_STRING]\n};\n\n\n/**\n * @type {!Object<string, Array<import(\"../../render/ReplayType.js\").default>>}\n */\nvar VECTOR_REPLAYS = {\n 'image': [ReplayType.DEFAULT],\n 'hybrid': [ReplayType.IMAGE, ReplayType.TEXT, ReplayType.DEFAULT],\n 'vector': ORDER\n};\n\n\n/**\n * @classdesc\n * Canvas renderer for vector tile layers.\n * @api\n */\nvar CanvasVectorTileLayerRenderer = /*@__PURE__*/(function (CanvasTileLayerRenderer) {\n function CanvasVectorTileLayerRenderer(layer) {\n\n CanvasTileLayerRenderer.call(this, layer, true);\n\n /**\n * Declutter tree.\n * @private\n */\n this.declutterTree_ = layer.getDeclutter() ? rbush(9, undefined) : null;\n\n /**\n * @private\n * @type {boolean}\n */\n this.dirty_ = false;\n\n /**\n * @private\n * @type {number}\n */\n this.renderedLayerRevision_;\n\n /**\n * @private\n * @type {import(\"../../transform.js\").Transform}\n */\n this.tmpTransform_ = createTransform();\n\n var renderMode = layer.getRenderMode();\n\n // Use lower resolution for pure vector rendering. Closest resolution otherwise.\n this.zDirection = renderMode === VectorTileRenderType.VECTOR ? 1 : 0;\n\n if (renderMode !== VectorTileRenderType.VECTOR) {\n this.context = createCanvasContext2D();\n }\n\n\n listen(labelCache, EventType.CLEAR, this.handleFontsChanged_, this);\n\n }\n\n if ( CanvasTileLayerRenderer ) CanvasVectorTileLayerRenderer.__proto__ = CanvasTileLayerRenderer;\n CanvasVectorTileLayerRenderer.prototype = Object.create( CanvasTileLayerRenderer && CanvasTileLayerRenderer.prototype );\n CanvasVectorTileLayerRenderer.prototype.constructor = CanvasVectorTileLayerRenderer;\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.disposeInternal = function disposeInternal () {\n unlisten(labelCache, EventType.CLEAR, this.handleFontsChanged_, this);\n CanvasTileLayerRenderer.prototype.disposeInternal.call(this);\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.getTile = function getTile (z, x, y, pixelRatio, projection) {\n var tile = CanvasTileLayerRenderer.prototype.getTile.call(this, z, x, y, pixelRatio, projection);\n if (tile.getState() === TileState.LOADED) {\n this.createReplayGroup_(/** @type {import(\"../../VectorImageTile.js\").default} */ (tile), pixelRatio, projection);\n if (this.context) {\n this.renderTileImage_(/** @type {import(\"../../VectorImageTile.js\").default} */ (tile), pixelRatio, projection);\n }\n }\n return tile;\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.getTileImage = function getTileImage (tile) {\n var tileLayer = /** @type {import(\"../../layer/Tile.js\").default} */ (this.getLayer());\n return /** @type {import(\"../../VectorImageTile.js\").default} */ (tile).getImage(tileLayer);\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.prepareFrame = function prepareFrame (frameState, layerState) {\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var layerRevision = layer.getRevision();\n if (this.renderedLayerRevision_ != layerRevision) {\n this.renderedTiles.length = 0;\n }\n this.renderedLayerRevision_ = layerRevision;\n return CanvasTileLayerRenderer.prototype.prepareFrame.call(this, frameState, layerState);\n };\n\n /**\n * @param {import(\"../../VectorImageTile.js\").default} tile Tile.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../../proj/Projection.js\").default} projection Projection.\n * @private\n */\n CanvasVectorTileLayerRenderer.prototype.createReplayGroup_ = function createReplayGroup_ (tile, pixelRatio, projection) {\n var this$1 = this;\n\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var revision = layer.getRevision();\n var renderOrder = /** @type {import(\"../../render.js\").OrderFunction} */ (layer.getRenderOrder()) || null;\n\n var replayState = tile.getReplayState(layer);\n if (!replayState.dirty && replayState.renderedRevision == revision &&\n replayState.renderedRenderOrder == renderOrder) {\n return;\n }\n\n var source = /** @type {import(\"../../source/VectorTile.js\").default} */ (layer.getSource());\n var sourceTileGrid = source.getTileGrid();\n var tileGrid = source.getTileGridForProjection(projection);\n var resolution = tileGrid.getResolution(tile.tileCoord[0]);\n var tileExtent = tile.extent;\n\n var loop = function ( t, tt ) {\n var sourceTile = tile.getTile(tile.tileKeys[t]);\n if (sourceTile.getState() != TileState.LOADED) {\n return;\n }\n\n var sourceTileCoord = sourceTile.tileCoord;\n var sourceTileExtent = sourceTileGrid.getTileCoordExtent(sourceTileCoord);\n var sharedExtent = getIntersection(tileExtent, sourceTileExtent);\n var bufferedExtent = equals(sourceTileExtent, sharedExtent) ? null :\n buffer(sharedExtent, layer.getRenderBuffer() * resolution, this$1.tmpExtent);\n var tileProjection = sourceTile.getProjection();\n var reproject = false;\n if (!equivalentProjection(projection, tileProjection)) {\n reproject = true;\n sourceTile.setProjection(projection);\n }\n replayState.dirty = false;\n var replayGroup = new CanvasReplayGroup(0, sharedExtent, resolution,\n pixelRatio, source.getOverlaps(), this$1.declutterTree_, layer.getRenderBuffer());\n var squaredTolerance = getSquaredRenderTolerance(resolution, pixelRatio);\n\n /**\n * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n * @this {CanvasVectorTileLayerRenderer}\n */\n var render = function(feature) {\n var styles;\n var styleFunction = feature.getStyleFunction() || layer.getStyleFunction();\n if (styleFunction) {\n styles = styleFunction(feature, resolution);\n }\n if (styles) {\n var dirty = this.renderFeature(feature, squaredTolerance, styles, replayGroup);\n this.dirty_ = this.dirty_ || dirty;\n replayState.dirty = replayState.dirty || dirty;\n }\n };\n\n var features = sourceTile.getFeatures();\n if (renderOrder && renderOrder !== replayState.renderedRenderOrder) {\n features.sort(renderOrder);\n }\n for (var i = 0, ii = features.length; i < ii; ++i) {\n var feature = features[i];\n if (reproject) {\n if (tileProjection.getUnits() == Units.TILE_PIXELS) {\n // projected tile extent\n tileProjection.setWorldExtent(sourceTileExtent);\n // tile extent in tile pixel space\n tileProjection.setExtent(sourceTile.getExtent());\n }\n feature.getGeometry().transform(tileProjection, projection);\n }\n if (!bufferedExtent || intersects(bufferedExtent, feature.getGeometry().getExtent())) {\n render.call(this$1, feature);\n }\n }\n replayGroup.finish();\n sourceTile.setReplayGroup(layer, tile.tileCoord.toString(), replayGroup);\n };\n\n for (var t = 0, tt = tile.tileKeys.length; t < tt; ++t) loop( t, tt );\n replayState.renderedRevision = revision;\n replayState.renderedRenderOrder = renderOrder;\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.forEachFeatureAtCoordinate = function forEachFeatureAtCoordinate (coordinate, frameState, hitTolerance, callback, thisArg) {\n var resolution = frameState.viewState.resolution;\n var rotation = frameState.viewState.rotation;\n hitTolerance = hitTolerance == undefined ? 0 : hitTolerance;\n var layer = this.getLayer();\n /** @type {!Object<string, boolean>} */\n var features = {};\n\n var renderedTiles = /** @type {Array<import(\"../../VectorImageTile.js\").default>} */ (this.renderedTiles);\n\n var bufferedExtent, found;\n var i, ii;\n for (i = 0, ii = renderedTiles.length; i < ii; ++i) {\n var tile = renderedTiles[i];\n bufferedExtent = buffer(tile.extent, hitTolerance * resolution, bufferedExtent);\n if (!containsCoordinate(bufferedExtent, coordinate)) {\n continue;\n }\n for (var t = 0, tt = tile.tileKeys.length; t < tt; ++t) {\n var sourceTile = tile.getTile(tile.tileKeys[t]);\n if (sourceTile.getState() != TileState.LOADED) {\n continue;\n }\n var replayGroup = /** @type {CanvasReplayGroup} */ (sourceTile.getReplayGroup(layer,\n tile.tileCoord.toString()));\n found = found || replayGroup.forEachFeatureAtCoordinate(coordinate, resolution, rotation, hitTolerance, {},\n /**\n * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n * @return {?} Callback result.\n */\n function(feature) {\n var key = getUid(feature);\n if (!(key in features)) {\n features[key] = true;\n return callback.call(thisArg, feature, layer);\n }\n }, null);\n }\n }\n return found;\n };\n\n /**\n * @param {import(\"../../VectorTile.js\").default} tile Tile.\n * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n * @return {import(\"../../transform.js\").Transform} transform Transform.\n * @private\n */\n CanvasVectorTileLayerRenderer.prototype.getReplayTransform_ = function getReplayTransform_ (tile, frameState) {\n var layer = this.getLayer();\n var source = /** @type {import(\"../../source/VectorTile.js\").default} */ (layer.getSource());\n var tileGrid = source.getTileGrid();\n var tileCoord = tile.tileCoord;\n var tileResolution = tileGrid.getResolution(tileCoord[0]);\n var viewState = frameState.viewState;\n var pixelRatio = frameState.pixelRatio;\n var renderResolution = viewState.resolution / pixelRatio;\n var tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent);\n var center = viewState.center;\n var origin = getTopLeft(tileExtent);\n var size = frameState.size;\n var offsetX = Math.round(pixelRatio * size[0] / 2);\n var offsetY = Math.round(pixelRatio * size[1] / 2);\n return composeTransform(this.tmpTransform_,\n offsetX, offsetY,\n tileResolution / renderResolution, tileResolution / renderResolution,\n viewState.rotation,\n (origin[0] - center[0]) / tileResolution,\n (center[1] - origin[1]) / tileResolution);\n };\n\n /**\n * @param {import(\"../../events/Event.js\").default} event Event.\n */\n CanvasVectorTileLayerRenderer.prototype.handleFontsChanged_ = function handleFontsChanged_ (event) {\n var layer = this.getLayer();\n if (layer.getVisible() && this.renderedLayerRevision_ !== undefined) {\n layer.changed();\n }\n };\n\n /**\n * Handle changes in image style state.\n * @param {import(\"../../events/Event.js\").default} event Image style change event.\n * @private\n */\n CanvasVectorTileLayerRenderer.prototype.handleStyleImageChange_ = function handleStyleImageChange_ (event) {\n this.renderIfReadyAndVisible();\n };\n\n /**\n * @inheritDoc\n */\n CanvasVectorTileLayerRenderer.prototype.postCompose = function postCompose (context, frameState, layerState) {\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var renderMode = layer.getRenderMode();\n if (renderMode != VectorTileRenderType.IMAGE) {\n var declutterReplays = layer.getDeclutter() ? {} : null;\n var source = /** @type {import(\"../../source/VectorTile.js\").default} */ (layer.getSource());\n var replayTypes = VECTOR_REPLAYS[renderMode];\n var pixelRatio = frameState.pixelRatio;\n var rotation = frameState.viewState.rotation;\n var size = frameState.size;\n var offsetX, offsetY;\n if (rotation) {\n offsetX = Math.round(pixelRatio * size[0] / 2);\n offsetY = Math.round(pixelRatio * size[1] / 2);\n rotateAtOffset(context, -rotation, offsetX, offsetY);\n }\n if (declutterReplays) {\n this.declutterTree_.clear();\n }\n var viewHints = frameState.viewHints;\n var snapToPixel = !(viewHints[ViewHint.ANIMATING] || viewHints[ViewHint.INTERACTING]);\n var tiles = this.renderedTiles;\n var tileGrid = source.getTileGridForProjection(frameState.viewState.projection);\n var clips = [];\n var zs = [];\n for (var i = tiles.length - 1; i >= 0; --i) {\n var tile = /** @type {import(\"../../VectorImageTile.js\").default} */ (tiles[i]);\n if (tile.getState() == TileState.ABORT) {\n continue;\n }\n var tileCoord = tile.tileCoord;\n var worldOffset = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent)[0] - tile.extent[0];\n var transform = undefined;\n for (var t = 0, tt = tile.tileKeys.length; t < tt; ++t) {\n var sourceTile = tile.getTile(tile.tileKeys[t]);\n if (sourceTile.getState() != TileState.LOADED) {\n continue;\n }\n var replayGroup = /** @type {CanvasReplayGroup} */ (sourceTile.getReplayGroup(layer, tileCoord.toString()));\n if (!replayGroup || !replayGroup.hasReplays(replayTypes)) {\n // sourceTile was not yet loaded when this.createReplayGroup_() was\n // called, or it has no replays of the types we want to render\n continue;\n }\n if (!transform) {\n transform = this.getTransform(frameState, worldOffset);\n }\n var currentZ = sourceTile.tileCoord[0];\n var currentClip = replayGroup.getClipCoords(transform);\n context.save();\n context.globalAlpha = layerState.opacity;\n // Create a clip mask for regions in this low resolution tile that are\n // already filled by a higher resolution tile\n for (var j = 0, jj = clips.length; j < jj; ++j) {\n var clip = clips[j];\n if (currentZ < zs[j]) {\n context.beginPath();\n // counter-clockwise (outer ring) for current tile\n context.moveTo(currentClip[0], currentClip[1]);\n context.lineTo(currentClip[2], currentClip[3]);\n context.lineTo(currentClip[4], currentClip[5]);\n context.lineTo(currentClip[6], currentClip[7]);\n // clockwise (inner ring) for higher resolution tile\n context.moveTo(clip[6], clip[7]);\n context.lineTo(clip[4], clip[5]);\n context.lineTo(clip[2], clip[3]);\n context.lineTo(clip[0], clip[1]);\n context.clip();\n }\n }\n replayGroup.replay(context, transform, rotation, {}, snapToPixel, replayTypes, declutterReplays);\n context.restore();\n clips.push(currentClip);\n zs.push(currentZ);\n }\n }\n if (declutterReplays) {\n replayDeclutter(declutterReplays, context, rotation, snapToPixel);\n }\n if (rotation) {\n rotateAtOffset(context, rotation,\n /** @type {number} */ (offsetX), /** @type {number} */ (offsetY));\n }\n }\n CanvasTileLayerRenderer.prototype.postCompose.call(this, context, frameState, layerState);\n };\n\n /**\n * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {import(\"../../style/Style.js\").default|Array<import(\"../../style/Style.js\").default>} styles The style or array of styles.\n * @param {import(\"../../render/canvas/ReplayGroup.js\").default} replayGroup Replay group.\n * @return {boolean} `true` if an image is loading.\n */\n CanvasVectorTileLayerRenderer.prototype.renderFeature = function renderFeature$1 (feature, squaredTolerance, styles, replayGroup) {\n if (!styles) {\n return false;\n }\n var loading = false;\n if (Array.isArray(styles)) {\n for (var i = 0, ii = styles.length; i < ii; ++i) {\n loading = renderFeature(\n replayGroup, feature, styles[i], squaredTolerance,\n this.handleStyleImageChange_, this) || loading;\n }\n } else {\n loading = renderFeature(\n replayGroup, feature, styles, squaredTolerance,\n this.handleStyleImageChange_, this);\n }\n return loading;\n };\n\n /**\n * @param {import(\"../../VectorImageTile.js\").default} tile Tile.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../../proj/Projection.js\").default} projection Projection.\n * @private\n */\n CanvasVectorTileLayerRenderer.prototype.renderTileImage_ = function renderTileImage_ (tile, pixelRatio, projection) {\n var layer = /** @type {import(\"../../layer/Vector.js\").default} */ (this.getLayer());\n var replayState = tile.getReplayState(layer);\n var revision = layer.getRevision();\n var replays = IMAGE_REPLAYS[layer.getRenderMode()];\n if (replays && replayState.renderedTileRevision !== revision) {\n replayState.renderedTileRevision = revision;\n var tileCoord = tile.wrappedTileCoord;\n var z = tileCoord[0];\n var source = /** @type {import(\"../../source/VectorTile.js\").default} */ (layer.getSource());\n var tileGrid = source.getTileGridForProjection(projection);\n var resolution = tileGrid.getResolution(z);\n var context = tile.getContext(layer);\n var size = source.getTilePixelSize(z, pixelRatio, projection);\n context.canvas.width = size[0];\n context.canvas.height = size[1];\n var tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent);\n for (var i = 0, ii = tile.tileKeys.length; i < ii; ++i) {\n var sourceTile = tile.getTile(tile.tileKeys[i]);\n if (sourceTile.getState() != TileState.LOADED) {\n continue;\n }\n var pixelScale = pixelRatio / resolution;\n var transform = resetTransform(this.tmpTransform_);\n scaleTransform(transform, pixelScale, -pixelScale);\n translateTransform(transform, -tileExtent[0], -tileExtent[3]);\n var replayGroup = /** @type {CanvasReplayGroup} */ (sourceTile.getReplayGroup(layer,\n tile.tileCoord.toString()));\n replayGroup.replay(context, transform, 0, {}, true, replays);\n }\n }\n };\n\n return CanvasVectorTileLayerRenderer;\n}(CanvasTileLayerRenderer));\n\n\n/**\n * Determine if this renderer handles the provided layer.\n * @param {import(\"../../layer/Layer.js\").default} layer The candidate layer.\n * @return {boolean} The renderer can render the layer.\n */\nCanvasVectorTileLayerRenderer['handles'] = function(layer) {\n return layer.getType() === LayerType.VECTOR_TILE;\n};\n\n\n/**\n * Create a layer renderer.\n * @param {import(\"../Map.js\").default} mapRenderer The map renderer.\n * @param {import(\"../../layer/Layer.js\").default} layer The layer to be rendererd.\n * @return {CanvasVectorTileLayerRenderer} The layer renderer.\n */\nCanvasVectorTileLayerRenderer['create'] = function(mapRenderer, layer) {\n return new CanvasVectorTileLayerRenderer(/** @type {import(\"../../layer/VectorTile.js\").default} */ (layer));\n};\n\n\nexport default CanvasVectorTileLayerRenderer;\n\n//# sourceMappingURL=VectorTileLayer.js.map","/**\n * @module ol/Map\n */\nimport PluggableMap from './PluggableMap.js';\nimport {defaults as defaultControls} from './control/util.js';\nimport {defaults as defaultInteractions} from './interaction.js';\nimport {assign} from './obj.js';\nimport CanvasImageLayerRenderer from './renderer/canvas/ImageLayer.js';\nimport CanvasMapRenderer from './renderer/canvas/Map.js';\nimport CanvasTileLayerRenderer from './renderer/canvas/TileLayer.js';\nimport CanvasVectorLayerRenderer from './renderer/canvas/VectorLayer.js';\nimport CanvasVectorTileLayerRenderer from './renderer/canvas/VectorTileLayer.js';\n\n/**\n * @classdesc\n * The map is the core component of OpenLayers. For a map to render, a view,\n * one or more layers, and a target container are needed:\n *\n * import Map from 'ol/Map';\n * import View from 'ol/View';\n * import TileLayer from 'ol/layer/Tile';\n * import OSM from 'ol/source/OSM';\n *\n * var map = new Map({\n * view: new View({\n * center: [0, 0],\n * zoom: 1\n * }),\n * layers: [\n * new TileLayer({\n * source: new OSM()\n * })\n * ],\n * target: 'map'\n * });\n *\n * The above snippet creates a map using a {@link module:ol/layer/Tile} to\n * display {@link module:ol/source/OSM~OSM} OSM data and render it to a DOM\n * element with the id `map`.\n *\n * The constructor places a viewport container (with CSS class name\n * `ol-viewport`) in the target element (see `getViewport()`), and then two\n * further elements within the viewport: one with CSS class name\n * `ol-overlaycontainer-stopevent` for controls and some overlays, and one with\n * CSS class name `ol-overlaycontainer` for other overlays (see the `stopEvent`\n * option of {@link module:ol/Overlay~Overlay} for the difference). The map\n * itself is placed in a further element within the viewport.\n *\n * Layers are stored as a {@link module:ol/Collection~Collection} in\n * layerGroups. A top-level group is provided by the library. This is what is\n * accessed by `getLayerGroup` and `setLayerGroup`. Layers entered in the\n * options are added to this group, and `addLayer` and `removeLayer` change the\n * layer collection in the group. `getLayers` is a convenience function for\n * `getLayerGroup().getLayers()`. Note that {@link module:ol/layer/Group~Group}\n * is a subclass of {@link module:ol/layer/Base}, so layers entered in the\n * options or added with `addLayer` can be groups, which can contain further\n * groups, and so on.\n *\n * @fires import(\"./MapBrowserEvent.js\").MapBrowserEvent\n * @fires import(\"./MapEvent.js\").MapEvent\n * @fires module:ol/render/Event~RenderEvent#postcompose\n * @fires module:ol/render/Event~RenderEvent#precompose\n * @api\n */\nvar Map = /*@__PURE__*/(function (PluggableMap) {\n function Map(options) {\n options = assign({}, options);\n if (!options.controls) {\n options.controls = defaultControls();\n }\n if (!options.interactions) {\n options.interactions = defaultInteractions();\n }\n\n PluggableMap.call(this, options);\n }\n\n if ( PluggableMap ) Map.__proto__ = PluggableMap;\n Map.prototype = Object.create( PluggableMap && PluggableMap.prototype );\n Map.prototype.constructor = Map;\n\n Map.prototype.createRenderer = function createRenderer () {\n var renderer = new CanvasMapRenderer(this);\n renderer.registerLayerRenderers([\n CanvasImageLayerRenderer,\n CanvasTileLayerRenderer,\n CanvasVectorLayerRenderer,\n CanvasVectorTileLayerRenderer\n ]);\n return renderer;\n };\n\n return Map;\n}(PluggableMap));\n\n\nexport default Map;\n\n//# sourceMappingURL=Map.js.map","/**\n * @module ol/layer/TileProperty\n */\n\n/**\n * @enum {string}\n */\nexport default {\n PRELOAD: 'preload',\n USE_INTERIM_TILES_ON_ERROR: 'useInterimTilesOnError'\n};\n\n//# sourceMappingURL=TileProperty.js.map","/**\n * @module ol/layer/Tile\n */\nimport LayerType from '../LayerType.js';\nimport Layer from './Layer.js';\nimport TileProperty from './TileProperty.js';\nimport {assign} from '../obj.js';\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering. The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering. At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [preload=0] Preload. Load low-resolution tiles up to `preload` levels. `0`\n * means no preloading.\n * @property {import(\"../source/Tile.js\").default} [source] Source for this layer.\n * @property {import(\"../PluggableMap.js\").default} [map] Sets the layer as overlay on a map. The map will not manage\n * this layer in its layers collection, and the layer will be rendered on top. This is useful for\n * temporary layers. The standard way to add a layer to a map and have it managed by the map is to\n * use {@link module:ol/Map#addLayer}.\n * @property {boolean} [useInterimTilesOnError=true] Use interim tiles on error.\n */\n\n/**\n * @classdesc\n * For layer sources that provide pre-rendered, tiled images in grids that are\n * organized by zoom levels for specific resolutions.\n * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}\n * property on the layer object; for example, setting `title: 'My Title'` in the\n * options means that `title` is observable, and has get/set accessors.\n *\n * @api\n */\nvar TileLayer = /*@__PURE__*/(function (Layer) {\n function TileLayer(opt_options) {\n var options = opt_options ? opt_options : {};\n\n var baseOptions = assign({}, options);\n\n delete baseOptions.preload;\n delete baseOptions.useInterimTilesOnError;\n Layer.call(this, baseOptions);\n\n this.setPreload(options.preload !== undefined ? options.preload : 0);\n this.setUseInterimTilesOnError(options.useInterimTilesOnError !== undefined ?\n options.useInterimTilesOnError : true);\n\n /**\n * The layer type.\n * @protected\n * @type {import(\"../LayerType.js\").default}\n */\n this.type = LayerType.TILE;\n\n }\n\n if ( Layer ) TileLayer.__proto__ = Layer;\n TileLayer.prototype = Object.create( Layer && Layer.prototype );\n TileLayer.prototype.constructor = TileLayer;\n\n /**\n * Return the level as number to which we will preload tiles up to.\n * @return {number} The level to preload tiles up to.\n * @observable\n * @api\n */\n TileLayer.prototype.getPreload = function getPreload () {\n return /** @type {number} */ (this.get(TileProperty.PRELOAD));\n };\n\n /**\n * Set the level as number to which we will preload tiles up to.\n * @param {number} preload The level to preload tiles up to.\n * @observable\n * @api\n */\n TileLayer.prototype.setPreload = function setPreload (preload) {\n this.set(TileProperty.PRELOAD, preload);\n };\n\n /**\n * Whether we use interim tiles on error.\n * @return {boolean} Use interim tiles on error.\n * @observable\n * @api\n */\n TileLayer.prototype.getUseInterimTilesOnError = function getUseInterimTilesOnError () {\n return /** @type {boolean} */ (this.get(TileProperty.USE_INTERIM_TILES_ON_ERROR));\n };\n\n /**\n * Set whether we use interim tiles on error.\n * @param {boolean} useInterimTilesOnError Use interim tiles on error.\n * @observable\n * @api\n */\n TileLayer.prototype.setUseInterimTilesOnError = function setUseInterimTilesOnError (useInterimTilesOnError) {\n this.set(TileProperty.USE_INTERIM_TILES_ON_ERROR, useInterimTilesOnError);\n };\n\n return TileLayer;\n}(Layer));\n\n\n/**\n * Return the associated {@link module:ol/source/Tile tilesource} of the layer.\n * @function\n * @return {import(\"../source/Tile.js\").default} Source.\n * @api\n */\nTileLayer.prototype.getSource;\n\n\nexport default TileLayer;\n\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/Tile\n */\nimport TileState from './TileState.js';\nimport {easeIn} from './easing.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\n\n\n/**\n * A function that takes an {@link module:ol/Tile} for the tile and a\n * `{string}` for the url as arguments. The default is\n * ```js\n * source.setTileLoadFunction(function(tile, src) {\n * tile.getImage().src = src;\n * });\n * ```\n * For more fine grained control, the load function can use fetch or XMLHttpRequest and involve\n * error handling:\n *\n * ```js\n * import TileState from 'ol/TileState';\n *\n * source.setTileLoadFunction(function(tile, src) {\n * var xhr = new XMLHttpRequest();\n * xhr.responseType = 'blob';\n * xhr.addEventListener('loadend', function (evt) {\n * var data = this.response;\n * if (data !== undefined) {\n * tile.getImage().src = URL.createObjectURL(data);\n * } else {\n * tile.setState(TileState.ERROR);\n * }\n * });\n * xhr.addEventListener('error', function () {\n * tile.setState(TileState.ERROR);\n * });\n * xhr.open('GET', src);\n * xhr.send();\n * });\n * ```\n *\n * @typedef {function(Tile, string)} LoadFunction\n * @api\n */\n\n/**\n * {@link module:ol/source/Tile~Tile} sources use a function of this type to get\n * the url that provides a tile for a given tile coordinate.\n *\n * This function takes an {@link module:ol/tilecoord~TileCoord} for the tile\n * coordinate, a `{number}` representing the pixel ratio and a\n * {@link module:ol/proj/Projection} for the projection as arguments\n * and returns a `{string}` representing the tile URL, or undefined if no tile\n * should be requested for the passed tile coordinate.\n *\n * @typedef {function(import(\"./tilecoord.js\").TileCoord, number,\n * import(\"./proj/Projection.js\").default): (string|undefined)} UrlFunction\n * @api\n */\n\n\n/**\n * @typedef {Object} Options\n * @property {number} [transition=250] A duration for tile opacity\n * transitions in milliseconds. A duration of 0 disables the opacity transition.\n * @api\n */\n\n\n/**\n * @classdesc\n * Base class for tiles.\n *\n * @abstract\n */\nvar Tile = /*@__PURE__*/(function (EventTarget) {\n function Tile(tileCoord, state, opt_options) {\n EventTarget.call(this);\n\n var options = opt_options ? opt_options : {};\n\n /**\n * @type {import(\"./tilecoord.js\").TileCoord}\n */\n this.tileCoord = tileCoord;\n\n /**\n * @protected\n * @type {TileState}\n */\n this.state = state;\n\n /**\n * An \"interim\" tile for this tile. The interim tile may be used while this\n * one is loading, for \"smooth\" transitions when changing params/dimensions\n * on the source.\n * @type {Tile}\n */\n this.interimTile = null;\n\n /**\n * A key assigned to the tile. This is used by the tile source to determine\n * if this tile can effectively be used, or if a new tile should be created\n * and this one be used as an interim tile for this new tile.\n * @type {string}\n */\n this.key = '';\n\n /**\n * The duration for the opacity transition.\n * @type {number}\n */\n this.transition_ = options.transition === undefined ? 250 : options.transition;\n\n /**\n * Lookup of start times for rendering transitions. If the start time is\n * equal to -1, the transition is complete.\n * @type {Object<string, number>}\n */\n this.transitionStarts_ = {};\n\n }\n\n if ( EventTarget ) Tile.__proto__ = EventTarget;\n Tile.prototype = Object.create( EventTarget && EventTarget.prototype );\n Tile.prototype.constructor = Tile;\n\n /**\n * @protected\n */\n Tile.prototype.changed = function changed () {\n this.dispatchEvent(EventType.CHANGE);\n };\n\n /**\n * @return {string} Key.\n */\n Tile.prototype.getKey = function getKey () {\n return this.key + '/' + this.tileCoord;\n };\n\n /**\n * Get the interim tile most suitable for rendering using the chain of interim\n * tiles. This corresponds to the most recent tile that has been loaded, if no\n * such tile exists, the original tile is returned.\n * @return {!Tile} Best tile for rendering.\n */\n Tile.prototype.getInterimTile = function getInterimTile () {\n if (!this.interimTile) {\n //empty chain\n return this;\n }\n var tile = this.interimTile;\n\n // find the first loaded tile and return it. Since the chain is sorted in\n // decreasing order of creation time, there is no need to search the remainder\n // of the list (all those tiles correspond to older requests and will be\n // cleaned up by refreshInterimChain)\n do {\n if (tile.getState() == TileState.LOADED) {\n return tile;\n }\n tile = tile.interimTile;\n } while (tile);\n\n // we can not find a better tile\n return this;\n };\n\n /**\n * Goes through the chain of interim tiles and discards sections of the chain\n * that are no longer relevant.\n */\n Tile.prototype.refreshInterimChain = function refreshInterimChain () {\n if (!this.interimTile) {\n return;\n }\n\n var tile = this.interimTile;\n var prev = /** @type {Tile} */ (this);\n\n do {\n if (tile.getState() == TileState.LOADED) {\n //we have a loaded tile, we can discard the rest of the list\n //we would could abort any LOADING tile request\n //older than this tile (i.e. any LOADING tile following this entry in the chain)\n tile.interimTile = null;\n break;\n } else if (tile.getState() == TileState.LOADING) {\n //keep this LOADING tile any loaded tiles later in the chain are\n //older than this tile, so we're still interested in the request\n prev = tile;\n } else if (tile.getState() == TileState.IDLE) {\n //the head of the list is the most current tile, we don't need\n //to start any other requests for this chain\n prev.interimTile = tile.interimTile;\n } else {\n prev = tile;\n }\n tile = prev.interimTile;\n } while (tile);\n };\n\n /**\n * Get the tile coordinate for this tile.\n * @return {import(\"./tilecoord.js\").TileCoord} The tile coordinate.\n * @api\n */\n Tile.prototype.getTileCoord = function getTileCoord () {\n return this.tileCoord;\n };\n\n /**\n * @return {TileState} State.\n */\n Tile.prototype.getState = function getState () {\n return this.state;\n };\n\n /**\n * Sets the state of this tile. If you write your own {@link module:ol/Tile~LoadFunction tileLoadFunction} ,\n * it is important to set the state correctly to {@link module:ol/TileState~ERROR}\n * when the tile cannot be loaded. Otherwise the tile cannot be removed from\n * the tile queue and will block other requests.\n * @param {TileState} state State.\n * @api\n */\n Tile.prototype.setState = function setState (state) {\n this.state = state;\n this.changed();\n };\n\n /**\n * Load the image or retry if loading previously failed.\n * Loading is taken care of by the tile queue, and calling this method is\n * only needed for preloading or for reloading in case of an error.\n * @abstract\n * @api\n */\n Tile.prototype.load = function load () {};\n\n /**\n * Get the alpha value for rendering.\n * @param {string} id An id for the renderer.\n * @param {number} time The render frame time.\n * @return {number} A number between 0 and 1.\n */\n Tile.prototype.getAlpha = function getAlpha (id, time) {\n if (!this.transition_) {\n return 1;\n }\n\n var start = this.transitionStarts_[id];\n if (!start) {\n start = time;\n this.transitionStarts_[id] = start;\n } else if (start === -1) {\n return 1;\n }\n\n var delta = time - start + (1000 / 60); // avoid rendering at 0\n if (delta >= this.transition_) {\n return 1;\n }\n return easeIn(delta / this.transition_);\n };\n\n /**\n * Determine if a tile is in an alpha transition. A tile is considered in\n * transition if tile.getAlpha() has not yet been called or has been called\n * and returned 1.\n * @param {string} id An id for the renderer.\n * @return {boolean} The tile is in transition.\n */\n Tile.prototype.inTransition = function inTransition (id) {\n if (!this.transition_) {\n return false;\n }\n return this.transitionStarts_[id] !== -1;\n };\n\n /**\n * Mark a transition as complete.\n * @param {string} id An id for the renderer.\n */\n Tile.prototype.endTransition = function endTransition (id) {\n if (this.transition_) {\n this.transitionStarts_[id] = -1;\n }\n };\n\n return Tile;\n}(EventTarget));\n\n\nexport default Tile;\n\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/ImageTile\n */\nimport Tile from './Tile.js';\nimport TileState from './TileState.js';\nimport {createCanvasContext2D} from './dom.js';\nimport {listenOnce, unlistenByKey} from './events.js';\nimport EventType from './events/EventType.js';\n\n\nvar ImageTile = /*@__PURE__*/(function (Tile) {\n function ImageTile(tileCoord, state, src, crossOrigin, tileLoadFunction, opt_options) {\n\n Tile.call(this, tileCoord, state, opt_options);\n\n /**\n * @private\n * @type {?string}\n */\n this.crossOrigin_ = crossOrigin;\n\n /**\n * Image URI\n *\n * @private\n * @type {string}\n */\n this.src_ = src;\n\n /**\n * @private\n * @type {HTMLImageElement|HTMLCanvasElement}\n */\n this.image_ = new Image();\n if (crossOrigin !== null) {\n this.image_.crossOrigin = crossOrigin;\n }\n\n /**\n * @private\n * @type {Array<import(\"./events.js\").EventsKey>}\n */\n this.imageListenerKeys_ = null;\n\n /**\n * @private\n * @type {import(\"./Tile.js\").LoadFunction}\n */\n this.tileLoadFunction_ = tileLoadFunction;\n\n }\n\n if ( Tile ) ImageTile.__proto__ = Tile;\n ImageTile.prototype = Object.create( Tile && Tile.prototype );\n ImageTile.prototype.constructor = ImageTile;\n\n /**\n * @inheritDoc\n */\n ImageTile.prototype.disposeInternal = function disposeInternal () {\n if (this.state == TileState.LOADING) {\n this.unlistenImage_();\n this.image_ = getBlankImage();\n }\n if (this.interimTile) {\n this.interimTile.dispose();\n }\n this.state = TileState.ABORT;\n this.changed();\n Tile.prototype.disposeInternal.call(this);\n };\n\n /**\n * Get the HTML image element for this tile (may be a Canvas, Image, or Video).\n * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n * @api\n */\n ImageTile.prototype.getImage = function getImage () {\n return this.image_;\n };\n\n /**\n * @inheritDoc\n */\n ImageTile.prototype.getKey = function getKey () {\n return this.src_;\n };\n\n /**\n * Tracks loading or read errors.\n *\n * @private\n */\n ImageTile.prototype.handleImageError_ = function handleImageError_ () {\n this.state = TileState.ERROR;\n this.unlistenImage_();\n this.image_ = getBlankImage();\n this.changed();\n };\n\n /**\n * Tracks successful image load.\n *\n * @private\n */\n ImageTile.prototype.handleImageLoad_ = function handleImageLoad_ () {\n var image = /** @type {HTMLImageElement} */ (this.image_);\n if (image.naturalWidth && image.naturalHeight) {\n this.state = TileState.LOADED;\n } else {\n this.state = TileState.EMPTY;\n }\n this.unlistenImage_();\n this.changed();\n };\n\n /**\n * @inheritDoc\n * @api\n */\n ImageTile.prototype.load = function load () {\n if (this.state == TileState.ERROR) {\n this.state = TileState.IDLE;\n this.image_ = new Image();\n if (this.crossOrigin_ !== null) {\n this.image_.crossOrigin = this.crossOrigin_;\n }\n }\n if (this.state == TileState.IDLE) {\n this.state = TileState.LOADING;\n this.changed();\n this.imageListenerKeys_ = [\n listenOnce(this.image_, EventType.ERROR,\n this.handleImageError_, this),\n listenOnce(this.image_, EventType.LOAD,\n this.handleImageLoad_, this)\n ];\n this.tileLoadFunction_(this, this.src_);\n }\n };\n\n /**\n * Discards event handlers which listen for load completion or errors.\n *\n * @private\n */\n ImageTile.prototype.unlistenImage_ = function unlistenImage_ () {\n this.imageListenerKeys_.forEach(unlistenByKey);\n this.imageListenerKeys_ = null;\n };\n\n return ImageTile;\n}(Tile));\n\n\n/**\n * Get a 1-pixel blank image.\n * @return {HTMLCanvasElement} Blank image.\n */\nfunction getBlankImage() {\n var ctx = createCanvasContext2D(1, 1);\n ctx.fillStyle = 'rgba(0,0,0,0)';\n ctx.fillRect(0, 0, 1, 1);\n return ctx.canvas;\n}\n\nexport default ImageTile;\n\n//# sourceMappingURL=ImageTile.js.map","/**\n * @module ol/tilecoord\n */\n\n\n/**\n * An array of three numbers representing the location of a tile in a tile\n * grid. The order is `z`, `x`, and `y`. `z` is the zoom level.\n * @typedef {Array<number>} TileCoord\n * @api\n */\n\n\n/**\n * @param {number} z Z.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {TileCoord=} opt_tileCoord Tile coordinate.\n * @return {TileCoord} Tile coordinate.\n */\nexport function createOrUpdate(z, x, y, opt_tileCoord) {\n if (opt_tileCoord !== undefined) {\n opt_tileCoord[0] = z;\n opt_tileCoord[1] = x;\n opt_tileCoord[2] = y;\n return opt_tileCoord;\n } else {\n return [z, x, y];\n }\n}\n\n\n/**\n * @param {number} z Z.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {string} Key.\n */\nexport function getKeyZXY(z, x, y) {\n return z + '/' + x + '/' + y;\n}\n\n\n/**\n * Get the key for a tile coord.\n * @param {TileCoord} tileCoord The tile coord.\n * @return {string} Key.\n */\nexport function getKey(tileCoord) {\n return getKeyZXY(tileCoord[0], tileCoord[1], tileCoord[2]);\n}\n\n\n/**\n * Get a tile coord given a key.\n * @param {string} key The tile coord key.\n * @return {TileCoord} The tile coord.\n */\nexport function fromKey(key) {\n return key.split('/').map(Number);\n}\n\n\n/**\n * @param {TileCoord} tileCoord Tile coord.\n * @return {number} Hash.\n */\nexport function hash(tileCoord) {\n return (tileCoord[1] << tileCoord[0]) + tileCoord[2];\n}\n\n\n/**\n * @param {TileCoord} tileCoord Tile coord.\n * @return {string} Quad key.\n */\nexport function quadKey(tileCoord) {\n var z = tileCoord[0];\n var digits = new Array(z);\n var mask = 1 << (z - 1);\n var i, charCode;\n for (i = 0; i < z; ++i) {\n // 48 is charCode for 0 - '0'.charCodeAt(0)\n charCode = 48;\n if (tileCoord[1] & mask) {\n charCode += 1;\n }\n if (tileCoord[2] & mask) {\n charCode += 2;\n }\n digits[i] = String.fromCharCode(charCode);\n mask >>= 1;\n }\n return digits.join('');\n}\n\n\n/**\n * @param {TileCoord} tileCoord Tile coordinate.\n * @param {!import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {boolean} Tile coordinate is within extent and zoom level range.\n */\nexport function withinExtentAndZ(tileCoord, tileGrid) {\n var z = tileCoord[0];\n var x = tileCoord[1];\n var y = tileCoord[2];\n\n if (tileGrid.getMinZoom() > z || z > tileGrid.getMaxZoom()) {\n return false;\n }\n var extent = tileGrid.getExtent();\n var tileRange;\n if (!extent) {\n tileRange = tileGrid.getFullTileRange(z);\n } else {\n tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);\n }\n if (!tileRange) {\n return true;\n } else {\n return tileRange.containsXY(x, y);\n }\n}\n\n//# sourceMappingURL=tilecoord.js.map","/**\n * @module ol/TileCache\n */\nimport LRUCache from './structs/LRUCache.js';\nimport {fromKey, getKey} from './tilecoord.js';\n\nvar TileCache = /*@__PURE__*/(function (LRUCache) {\n function TileCache(opt_highWaterMark) {\n\n LRUCache.call(this, opt_highWaterMark);\n\n }\n\n if ( LRUCache ) TileCache.__proto__ = LRUCache;\n TileCache.prototype = Object.create( LRUCache && LRUCache.prototype );\n TileCache.prototype.constructor = TileCache;\n\n /**\n * @param {!Object<string, import(\"./TileRange.js\").default>} usedTiles Used tiles.\n */\n TileCache.prototype.expireCache = function expireCache (usedTiles) {\n while (this.canExpireCache()) {\n var tile = this.peekLast();\n var zKey = tile.tileCoord[0].toString();\n if (zKey in usedTiles && usedTiles[zKey].contains(tile.tileCoord)) {\n break;\n } else {\n this.pop().dispose();\n }\n }\n };\n\n /**\n * Prune all tiles from the cache that don't have the same z as the newest tile.\n */\n TileCache.prototype.pruneExceptNewestZ = function pruneExceptNewestZ () {\n if (this.getCount() === 0) {\n return;\n }\n var key = this.peekFirstKey();\n var tileCoord = fromKey(key);\n var z = tileCoord[0];\n this.forEach(function(tile) {\n if (tile.tileCoord[0] !== z) {\n this.remove(getKey(tile.tileCoord));\n tile.dispose();\n }\n }, this);\n };\n\n return TileCache;\n}(LRUCache));\n\n\nexport default TileCache;\n\n//# sourceMappingURL=TileCache.js.map","/**\n * @module ol/reproj\n */\nimport {createCanvasContext2D} from './dom.js';\nimport {containsCoordinate, createEmpty, extend, getHeight, getTopLeft, getWidth} from './extent.js';\nimport {solveLinearSystem} from './math.js';\nimport {getPointResolution, transform} from './proj.js';\n\n\n/**\n * Calculates ideal resolution to use from the source in order to achieve\n * pixel mapping as close as possible to 1:1 during reprojection.\n * The resolution is calculated regardless of what resolutions\n * are actually available in the dataset (TileGrid, Image, ...).\n *\n * @param {import(\"./proj/Projection.js\").default} sourceProj Source projection.\n * @param {import(\"./proj/Projection.js\").default} targetProj Target projection.\n * @param {import(\"./coordinate.js\").Coordinate} targetCenter Target center.\n * @param {number} targetResolution Target resolution.\n * @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.\n */\nexport function calculateSourceResolution(sourceProj, targetProj,\n targetCenter, targetResolution) {\n\n var sourceCenter = transform(targetCenter, targetProj, sourceProj);\n\n // calculate the ideal resolution of the source data\n var sourceResolution = getPointResolution(targetProj, targetResolution, targetCenter);\n\n var targetMetersPerUnit = targetProj.getMetersPerUnit();\n if (targetMetersPerUnit !== undefined) {\n sourceResolution *= targetMetersPerUnit;\n }\n var sourceMetersPerUnit = sourceProj.getMetersPerUnit();\n if (sourceMetersPerUnit !== undefined) {\n sourceResolution /= sourceMetersPerUnit;\n }\n\n // Based on the projection properties, the point resolution at the specified\n // coordinates may be slightly different. We need to reverse-compensate this\n // in order to achieve optimal results.\n\n var sourceExtent = sourceProj.getExtent();\n if (!sourceExtent || containsCoordinate(sourceExtent, sourceCenter)) {\n var compensationFactor = getPointResolution(sourceProj, sourceResolution, sourceCenter) /\n sourceResolution;\n if (isFinite(compensationFactor) && compensationFactor > 0) {\n sourceResolution /= compensationFactor;\n }\n }\n\n return sourceResolution;\n}\n\n\n/**\n * Enlarge the clipping triangle point by 1 pixel to ensure the edges overlap\n * in order to mask gaps caused by antialiasing.\n *\n * @param {number} centroidX Centroid of the triangle (x coordinate in pixels).\n * @param {number} centroidY Centroid of the triangle (y coordinate in pixels).\n * @param {number} x X coordinate of the point (in pixels).\n * @param {number} y Y coordinate of the point (in pixels).\n * @return {import(\"./coordinate.js\").Coordinate} New point 1 px farther from the centroid.\n */\nfunction enlargeClipPoint(centroidX, centroidY, x, y) {\n var dX = x - centroidX;\n var dY = y - centroidY;\n var distance = Math.sqrt(dX * dX + dY * dY);\n return [Math.round(x + dX / distance), Math.round(y + dY / distance)];\n}\n\n\n/**\n * Renders the source data into new canvas based on the triangulation.\n *\n * @param {number} width Width of the canvas.\n * @param {number} height Height of the canvas.\n * @param {number} pixelRatio Pixel ratio.\n * @param {number} sourceResolution Source resolution.\n * @param {import(\"./extent.js\").Extent} sourceExtent Extent of the data source.\n * @param {number} targetResolution Target resolution.\n * @param {import(\"./extent.js\").Extent} targetExtent Target extent.\n * @param {import(\"./reproj/Triangulation.js\").default} triangulation\n * Calculated triangulation.\n * @param {Array<{extent: import(\"./extent.js\").Extent,\n * image: (HTMLCanvasElement|HTMLImageElement|HTMLVideoElement)}>} sources\n * Array of sources.\n * @param {number} gutter Gutter of the sources.\n * @param {boolean=} opt_renderEdges Render reprojection edges.\n * @return {HTMLCanvasElement} Canvas with reprojected data.\n */\nexport function render(width, height, pixelRatio,\n sourceResolution, sourceExtent, targetResolution, targetExtent,\n triangulation, sources, gutter, opt_renderEdges) {\n\n var context = createCanvasContext2D(Math.round(pixelRatio * width),\n Math.round(pixelRatio * height));\n\n if (sources.length === 0) {\n return context.canvas;\n }\n\n context.scale(pixelRatio, pixelRatio);\n\n var sourceDataExtent = createEmpty();\n sources.forEach(function(src, i, arr) {\n extend(sourceDataExtent, src.extent);\n });\n\n var canvasWidthInUnits = getWidth(sourceDataExtent);\n var canvasHeightInUnits = getHeight(sourceDataExtent);\n var stitchContext = createCanvasContext2D(\n Math.round(pixelRatio * canvasWidthInUnits / sourceResolution),\n Math.round(pixelRatio * canvasHeightInUnits / sourceResolution));\n\n var stitchScale = pixelRatio / sourceResolution;\n\n sources.forEach(function(src, i, arr) {\n var xPos = src.extent[0] - sourceDataExtent[0];\n var yPos = -(src.extent[3] - sourceDataExtent[3]);\n var srcWidth = getWidth(src.extent);\n var srcHeight = getHeight(src.extent);\n\n stitchContext.drawImage(\n src.image,\n gutter, gutter,\n src.image.width - 2 * gutter, src.image.height - 2 * gutter,\n xPos * stitchScale, yPos * stitchScale,\n srcWidth * stitchScale, srcHeight * stitchScale);\n });\n\n var targetTopLeft = getTopLeft(targetExtent);\n\n triangulation.getTriangles().forEach(function(triangle, i, arr) {\n /* Calculate affine transform (src -> dst)\n * Resulting matrix can be used to transform coordinate\n * from `sourceProjection` to destination pixels.\n *\n * To optimize number of context calls and increase numerical stability,\n * we also do the following operations:\n * trans(-topLeftExtentCorner), scale(1 / targetResolution), scale(1, -1)\n * here before solving the linear system so [ui, vi] are pixel coordinates.\n *\n * Src points: xi, yi\n * Dst points: ui, vi\n * Affine coefficients: aij\n *\n * | x0 y0 1 0 0 0 | |a00| |u0|\n * | x1 y1 1 0 0 0 | |a01| |u1|\n * | x2 y2 1 0 0 0 | x |a02| = |u2|\n * | 0 0 0 x0 y0 1 | |a10| |v0|\n * | 0 0 0 x1 y1 1 | |a11| |v1|\n * | 0 0 0 x2 y2 1 | |a12| |v2|\n */\n var source = triangle.source;\n var target = triangle.target;\n var x0 = source[0][0], y0 = source[0][1];\n var x1 = source[1][0], y1 = source[1][1];\n var x2 = source[2][0], y2 = source[2][1];\n var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;\n var v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;\n var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;\n var v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;\n var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;\n var v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;\n\n // Shift all the source points to improve numerical stability\n // of all the subsequent calculations. The [x0, y0] is used here.\n // This is also used to simplify the linear system.\n var sourceNumericalShiftX = x0;\n var sourceNumericalShiftY = y0;\n x0 = 0;\n y0 = 0;\n x1 -= sourceNumericalShiftX;\n y1 -= sourceNumericalShiftY;\n x2 -= sourceNumericalShiftX;\n y2 -= sourceNumericalShiftY;\n\n var augmentedMatrix = [\n [x1, y1, 0, 0, u1 - u0],\n [x2, y2, 0, 0, u2 - u0],\n [0, 0, x1, y1, v1 - v0],\n [0, 0, x2, y2, v2 - v0]\n ];\n var affineCoefs = solveLinearSystem(augmentedMatrix);\n if (!affineCoefs) {\n return;\n }\n\n context.save();\n context.beginPath();\n var centroidX = (u0 + u1 + u2) / 3;\n var centroidY = (v0 + v1 + v2) / 3;\n var p0 = enlargeClipPoint(centroidX, centroidY, u0, v0);\n var p1 = enlargeClipPoint(centroidX, centroidY, u1, v1);\n var p2 = enlargeClipPoint(centroidX, centroidY, u2, v2);\n\n context.moveTo(p1[0], p1[1]);\n context.lineTo(p0[0], p0[1]);\n context.lineTo(p2[0], p2[1]);\n context.clip();\n\n context.transform(\n affineCoefs[0], affineCoefs[2], affineCoefs[1], affineCoefs[3], u0, v0);\n\n context.translate(sourceDataExtent[0] - sourceNumericalShiftX,\n sourceDataExtent[3] - sourceNumericalShiftY);\n\n context.scale(sourceResolution / pixelRatio,\n -sourceResolution / pixelRatio);\n\n context.drawImage(stitchContext.canvas, 0, 0);\n context.restore();\n });\n\n if (opt_renderEdges) {\n context.save();\n\n context.strokeStyle = 'black';\n context.lineWidth = 1;\n\n triangulation.getTriangles().forEach(function(triangle, i, arr) {\n var target = triangle.target;\n var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;\n var v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;\n var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;\n var v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;\n var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;\n var v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;\n\n context.beginPath();\n context.moveTo(u1, v1);\n context.lineTo(u0, v0);\n context.lineTo(u2, v2);\n context.closePath();\n context.stroke();\n });\n\n context.restore();\n }\n return context.canvas;\n}\n\n//# sourceMappingURL=reproj.js.map","/**\n * @module ol/reproj/Triangulation\n */\nimport {boundingExtent, createEmpty, extendCoordinate, getBottomLeft, getBottomRight,\n getTopLeft, getTopRight, getWidth, intersects} from '../extent.js';\nimport {modulo} from '../math.js';\nimport {getTransform} from '../proj.js';\n\n\n/**\n * Single triangle; consists of 3 source points and 3 target points.\n * @typedef {Object} Triangle\n * @property {Array<import(\"../coordinate.js\").Coordinate>} source\n * @property {Array<import(\"../coordinate.js\").Coordinate>} target\n */\n\n\n/**\n * Maximum number of subdivision steps during raster reprojection triangulation.\n * Prevents high memory usage and large number of proj4 calls (for certain\n * transformations and areas). At most `2*(2^this)` triangles are created for\n * each triangulated extent (tile/image).\n * @type {number}\n */\nvar MAX_SUBDIVISION = 10;\n\n\n/**\n * Maximum allowed size of triangle relative to world width. When transforming\n * corners of world extent between certain projections, the resulting\n * triangulation seems to have zero error and no subdivision is performed. If\n * the triangle width is more than this (relative to world width; 0-1),\n * subdivison is forced (up to `MAX_SUBDIVISION`). Default is `0.25`.\n * @type {number}\n */\nvar MAX_TRIANGLE_WIDTH = 0.25;\n\n\n/**\n * @classdesc\n * Class containing triangulation of the given target extent.\n * Used for determining source data and the reprojection itself.\n */\nvar Triangulation = function Triangulation(sourceProj, targetProj, targetExtent, maxSourceExtent, errorThreshold) {\n\n /**\n * @type {import(\"../proj/Projection.js\").default}\n * @private\n */\n this.sourceProj_ = sourceProj;\n\n /**\n * @type {import(\"../proj/Projection.js\").default}\n * @private\n */\n this.targetProj_ = targetProj;\n\n /** @type {!Object<string, import(\"../coordinate.js\").Coordinate>} */\n var transformInvCache = {};\n var transformInv = getTransform(this.targetProj_, this.sourceProj_);\n\n /**\n * @param {import(\"../coordinate.js\").Coordinate} c A coordinate.\n * @return {import(\"../coordinate.js\").Coordinate} Transformed coordinate.\n * @private\n */\n this.transformInv_ = function(c) {\n var key = c[0] + '/' + c[1];\n if (!transformInvCache[key]) {\n transformInvCache[key] = transformInv(c);\n }\n return transformInvCache[key];\n };\n\n /**\n * @type {import(\"../extent.js\").Extent}\n * @private\n */\n this.maxSourceExtent_ = maxSourceExtent;\n\n /**\n * @type {number}\n * @private\n */\n this.errorThresholdSquared_ = errorThreshold * errorThreshold;\n\n /**\n * @type {Array<Triangle>}\n * @private\n */\n this.triangles_ = [];\n\n /**\n * Indicates that the triangulation crosses edge of the source projection.\n * @type {boolean}\n * @private\n */\n this.wrapsXInSource_ = false;\n\n /**\n * @type {boolean}\n * @private\n */\n this.canWrapXInSource_ = this.sourceProj_.canWrapX() &&\n !!maxSourceExtent &&\n !!this.sourceProj_.getExtent() &&\n (getWidth(maxSourceExtent) == getWidth(this.sourceProj_.getExtent()));\n\n /**\n * @type {?number}\n * @private\n */\n this.sourceWorldWidth_ = this.sourceProj_.getExtent() ?\n getWidth(this.sourceProj_.getExtent()) : null;\n\n /**\n * @type {?number}\n * @private\n */\n this.targetWorldWidth_ = this.targetProj_.getExtent() ?\n getWidth(this.targetProj_.getExtent()) : null;\n\n var destinationTopLeft = getTopLeft(targetExtent);\n var destinationTopRight = getTopRight(targetExtent);\n var destinationBottomRight = getBottomRight(targetExtent);\n var destinationBottomLeft = getBottomLeft(targetExtent);\n var sourceTopLeft = this.transformInv_(destinationTopLeft);\n var sourceTopRight = this.transformInv_(destinationTopRight);\n var sourceBottomRight = this.transformInv_(destinationBottomRight);\n var sourceBottomLeft = this.transformInv_(destinationBottomLeft);\n\n this.addQuad_(\n destinationTopLeft, destinationTopRight,\n destinationBottomRight, destinationBottomLeft,\n sourceTopLeft, sourceTopRight, sourceBottomRight, sourceBottomLeft,\n MAX_SUBDIVISION);\n\n if (this.wrapsXInSource_) {\n var leftBound = Infinity;\n this.triangles_.forEach(function(triangle, i, arr) {\n leftBound = Math.min(leftBound,\n triangle.source[0][0], triangle.source[1][0], triangle.source[2][0]);\n });\n\n // Shift triangles to be as close to `leftBound` as possible\n // (if the distance is more than `worldWidth / 2` it can be closer.\n this.triangles_.forEach(function(triangle) {\n if (Math.max(triangle.source[0][0], triangle.source[1][0],\n triangle.source[2][0]) - leftBound > this.sourceWorldWidth_ / 2) {\n var newTriangle = [[triangle.source[0][0], triangle.source[0][1]],\n [triangle.source[1][0], triangle.source[1][1]],\n [triangle.source[2][0], triangle.source[2][1]]];\n if ((newTriangle[0][0] - leftBound) > this.sourceWorldWidth_ / 2) {\n newTriangle[0][0] -= this.sourceWorldWidth_;\n }\n if ((newTriangle[1][0] - leftBound) > this.sourceWorldWidth_ / 2) {\n newTriangle[1][0] -= this.sourceWorldWidth_;\n }\n if ((newTriangle[2][0] - leftBound) > this.sourceWorldWidth_ / 2) {\n newTriangle[2][0] -= this.sourceWorldWidth_;\n }\n\n // Rarely (if the extent contains both the dateline and prime meridian)\n // the shift can in turn break some triangles.\n // Detect this here and don't shift in such cases.\n var minX = Math.min(\n newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);\n var maxX = Math.max(\n newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);\n if ((maxX - minX) < this.sourceWorldWidth_ / 2) {\n triangle.source = newTriangle;\n }\n }\n }.bind(this));\n }\n\n transformInvCache = {};\n};\n\n/**\n * Adds triangle to the triangulation.\n * @param {import(\"../coordinate.js\").Coordinate} a The target a coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} b The target b coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} c The target c coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} aSrc The source a coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} bSrc The source b coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} cSrc The source c coordinate.\n * @private\n */\nTriangulation.prototype.addTriangle_ = function addTriangle_ (a, b, c, aSrc, bSrc, cSrc) {\n this.triangles_.push({\n source: [aSrc, bSrc, cSrc],\n target: [a, b, c]\n });\n};\n\n/**\n * Adds quad (points in clock-wise order) to the triangulation\n * (and reprojects the vertices) if valid.\n * Performs quad subdivision if needed to increase precision.\n *\n * @param {import(\"../coordinate.js\").Coordinate} a The target a coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} b The target b coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} c The target c coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} d The target d coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} aSrc The source a coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} bSrc The source b coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} cSrc The source c coordinate.\n * @param {import(\"../coordinate.js\").Coordinate} dSrc The source d coordinate.\n * @param {number} maxSubdivision Maximal allowed subdivision of the quad.\n * @private\n */\nTriangulation.prototype.addQuad_ = function addQuad_ (a, b, c, d, aSrc, bSrc, cSrc, dSrc, maxSubdivision) {\n\n var sourceQuadExtent = boundingExtent([aSrc, bSrc, cSrc, dSrc]);\n var sourceCoverageX = this.sourceWorldWidth_ ?\n getWidth(sourceQuadExtent) / this.sourceWorldWidth_ : null;\n var sourceWorldWidth = /** @type {number} */ (this.sourceWorldWidth_);\n\n // when the quad is wrapped in the source projection\n // it covers most of the projection extent, but not fully\n var wrapsX = this.sourceProj_.canWrapX() &&\n sourceCoverageX > 0.5 && sourceCoverageX < 1;\n\n var needsSubdivision = false;\n\n if (maxSubdivision > 0) {\n if (this.targetProj_.isGlobal() && this.targetWorldWidth_) {\n var targetQuadExtent = boundingExtent([a, b, c, d]);\n var targetCoverageX = getWidth(targetQuadExtent) / this.targetWorldWidth_;\n needsSubdivision = targetCoverageX > MAX_TRIANGLE_WIDTH ||\n needsSubdivision;\n }\n if (!wrapsX && this.sourceProj_.isGlobal() && sourceCoverageX) {\n needsSubdivision = sourceCoverageX > MAX_TRIANGLE_WIDTH ||\n needsSubdivision;\n }\n }\n\n if (!needsSubdivision && this.maxSourceExtent_) {\n if (!intersects(sourceQuadExtent, this.maxSourceExtent_)) {\n // whole quad outside source projection extent -> ignore\n return;\n }\n }\n\n if (!needsSubdivision) {\n if (!isFinite(aSrc[0]) || !isFinite(aSrc[1]) ||\n !isFinite(bSrc[0]) || !isFinite(bSrc[1]) ||\n !isFinite(cSrc[0]) || !isFinite(cSrc[1]) ||\n !isFinite(dSrc[0]) || !isFinite(dSrc[1])) {\n if (maxSubdivision > 0) {\n needsSubdivision = true;\n } else {\n return;\n }\n }\n }\n\n if (maxSubdivision > 0) {\n if (!needsSubdivision) {\n var center = [(a[0] + c[0]) / 2, (a[1] + c[1]) / 2];\n var centerSrc = this.transformInv_(center);\n\n var dx;\n if (wrapsX) {\n var centerSrcEstimX =\n (modulo(aSrc[0], sourceWorldWidth) +\n modulo(cSrc[0], sourceWorldWidth)) / 2;\n dx = centerSrcEstimX -\n modulo(centerSrc[0], sourceWorldWidth);\n } else {\n dx = (aSrc[0] + cSrc[0]) / 2 - centerSrc[0];\n }\n var dy = (aSrc[1] + cSrc[1]) / 2 - centerSrc[1];\n var centerSrcErrorSquared = dx * dx + dy * dy;\n needsSubdivision = centerSrcErrorSquared > this.errorThresholdSquared_;\n }\n if (needsSubdivision) {\n if (Math.abs(a[0] - c[0]) <= Math.abs(a[1] - c[1])) {\n // split horizontally (top & bottom)\n var bc = [(b[0] + c[0]) / 2, (b[1] + c[1]) / 2];\n var bcSrc = this.transformInv_(bc);\n var da = [(d[0] + a[0]) / 2, (d[1] + a[1]) / 2];\n var daSrc = this.transformInv_(da);\n\n this.addQuad_(\n a, b, bc, da, aSrc, bSrc, bcSrc, daSrc, maxSubdivision - 1);\n this.addQuad_(\n da, bc, c, d, daSrc, bcSrc, cSrc, dSrc, maxSubdivision - 1);\n } else {\n // split vertically (left & right)\n var ab = [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2];\n var abSrc = this.transformInv_(ab);\n var cd = [(c[0] + d[0]) / 2, (c[1] + d[1]) / 2];\n var cdSrc = this.transformInv_(cd);\n\n this.addQuad_(\n a, ab, cd, d, aSrc, abSrc, cdSrc, dSrc, maxSubdivision - 1);\n this.addQuad_(\n ab, b, c, cd, abSrc, bSrc, cSrc, cdSrc, maxSubdivision - 1);\n }\n return;\n }\n }\n\n if (wrapsX) {\n if (!this.canWrapXInSource_) {\n return;\n }\n this.wrapsXInSource_ = true;\n }\n\n this.addTriangle_(a, c, d, aSrc, cSrc, dSrc);\n this.addTriangle_(a, b, c, aSrc, bSrc, cSrc);\n};\n\n/**\n * Calculates extent of the 'source' coordinates from all the triangles.\n *\n * @return {import(\"../extent.js\").Extent} Calculated extent.\n */\nTriangulation.prototype.calculateSourceExtent = function calculateSourceExtent () {\n var extent = createEmpty();\n\n this.triangles_.forEach(function(triangle, i, arr) {\n var src = triangle.source;\n extendCoordinate(extent, src[0]);\n extendCoordinate(extent, src[1]);\n extendCoordinate(extent, src[2]);\n });\n\n return extent;\n};\n\n/**\n * @return {Array<Triangle>} Array of the calculated triangles.\n */\nTriangulation.prototype.getTriangles = function getTriangles () {\n return this.triangles_;\n};\n\nexport default Triangulation;\n\n//# sourceMappingURL=Triangulation.js.map","/**\n * @module ol/reproj/Tile\n */\nimport {ERROR_THRESHOLD} from './common.js';\n\nimport Tile from '../Tile.js';\nimport TileState from '../TileState.js';\nimport {listen, unlistenByKey} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {getArea, getCenter, getIntersection} from '../extent.js';\nimport {clamp} from '../math.js';\nimport {calculateSourceResolution, render as renderReprojected} from '../reproj.js';\nimport Triangulation from './Triangulation.js';\n\n\n/**\n * @typedef {function(number, number, number, number) : import(\"../Tile.js\").default} FunctionType\n */\n\n\n/**\n * @classdesc\n * Class encapsulating single reprojected tile.\n * See {@link module:ol/source/TileImage~TileImage}.\n *\n */\nvar ReprojTile = /*@__PURE__*/(function (Tile) {\n function ReprojTile(\n sourceProj,\n sourceTileGrid,\n targetProj,\n targetTileGrid,\n tileCoord,\n wrappedTileCoord,\n pixelRatio,\n gutter,\n getTileFunction,\n opt_errorThreshold,\n opt_renderEdges\n ) {\n Tile.call(this, tileCoord, TileState.IDLE);\n\n /**\n * @private\n * @type {boolean}\n */\n this.renderEdges_ = opt_renderEdges !== undefined ? opt_renderEdges : false;\n\n /**\n * @private\n * @type {number}\n */\n this.pixelRatio_ = pixelRatio;\n\n /**\n * @private\n * @type {number}\n */\n this.gutter_ = gutter;\n\n /**\n * @private\n * @type {HTMLCanvasElement}\n */\n this.canvas_ = null;\n\n /**\n * @private\n * @type {import(\"../tilegrid/TileGrid.js\").default}\n */\n this.sourceTileGrid_ = sourceTileGrid;\n\n /**\n * @private\n * @type {import(\"../tilegrid/TileGrid.js\").default}\n */\n this.targetTileGrid_ = targetTileGrid;\n\n /**\n * @private\n * @type {import(\"../tilecoord.js\").TileCoord}\n */\n this.wrappedTileCoord_ = wrappedTileCoord ? wrappedTileCoord : tileCoord;\n\n /**\n * @private\n * @type {!Array<import(\"../Tile.js\").default>}\n */\n this.sourceTiles_ = [];\n\n /**\n * @private\n * @type {Array<import(\"../events.js\").EventsKey>}\n */\n this.sourcesListenerKeys_ = null;\n\n /**\n * @private\n * @type {number}\n */\n this.sourceZ_ = 0;\n\n var targetExtent = targetTileGrid.getTileCoordExtent(this.wrappedTileCoord_);\n var maxTargetExtent = this.targetTileGrid_.getExtent();\n var maxSourceExtent = this.sourceTileGrid_.getExtent();\n\n var limitedTargetExtent = maxTargetExtent ?\n getIntersection(targetExtent, maxTargetExtent) : targetExtent;\n\n if (getArea(limitedTargetExtent) === 0) {\n // Tile is completely outside range -> EMPTY\n // TODO: is it actually correct that the source even creates the tile ?\n this.state = TileState.EMPTY;\n return;\n }\n\n var sourceProjExtent = sourceProj.getExtent();\n if (sourceProjExtent) {\n if (!maxSourceExtent) {\n maxSourceExtent = sourceProjExtent;\n } else {\n maxSourceExtent = getIntersection(maxSourceExtent, sourceProjExtent);\n }\n }\n\n var targetResolution = targetTileGrid.getResolution(\n this.wrappedTileCoord_[0]);\n\n var targetCenter = getCenter(limitedTargetExtent);\n var sourceResolution = calculateSourceResolution(\n sourceProj, targetProj, targetCenter, targetResolution);\n\n if (!isFinite(sourceResolution) || sourceResolution <= 0) {\n // invalid sourceResolution -> EMPTY\n // probably edges of the projections when no extent is defined\n this.state = TileState.EMPTY;\n return;\n }\n\n var errorThresholdInPixels = opt_errorThreshold !== undefined ?\n opt_errorThreshold : ERROR_THRESHOLD;\n\n /**\n * @private\n * @type {!import(\"./Triangulation.js\").default}\n */\n this.triangulation_ = new Triangulation(\n sourceProj, targetProj, limitedTargetExtent, maxSourceExtent,\n sourceResolution * errorThresholdInPixels);\n\n if (this.triangulation_.getTriangles().length === 0) {\n // no valid triangles -> EMPTY\n this.state = TileState.EMPTY;\n return;\n }\n\n this.sourceZ_ = sourceTileGrid.getZForResolution(sourceResolution);\n var sourceExtent = this.triangulation_.calculateSourceExtent();\n\n if (maxSourceExtent) {\n if (sourceProj.canWrapX()) {\n sourceExtent[1] = clamp(\n sourceExtent[1], maxSourceExtent[1], maxSourceExtent[3]);\n sourceExtent[3] = clamp(\n sourceExtent[3], maxSourceExtent[1], maxSourceExtent[3]);\n } else {\n sourceExtent = getIntersection(sourceExtent, maxSourceExtent);\n }\n }\n\n if (!getArea(sourceExtent)) {\n this.state = TileState.EMPTY;\n } else {\n var sourceRange = sourceTileGrid.getTileRangeForExtentAndZ(\n sourceExtent, this.sourceZ_);\n\n for (var srcX = sourceRange.minX; srcX <= sourceRange.maxX; srcX++) {\n for (var srcY = sourceRange.minY; srcY <= sourceRange.maxY; srcY++) {\n var tile = getTileFunction(this.sourceZ_, srcX, srcY, pixelRatio);\n if (tile) {\n this.sourceTiles_.push(tile);\n }\n }\n }\n\n if (this.sourceTiles_.length === 0) {\n this.state = TileState.EMPTY;\n }\n }\n }\n\n if ( Tile ) ReprojTile.__proto__ = Tile;\n ReprojTile.prototype = Object.create( Tile && Tile.prototype );\n ReprojTile.prototype.constructor = ReprojTile;\n\n /**\n * @inheritDoc\n */\n ReprojTile.prototype.disposeInternal = function disposeInternal () {\n if (this.state == TileState.LOADING) {\n this.unlistenSources_();\n }\n Tile.prototype.disposeInternal.call(this);\n };\n\n /**\n * Get the HTML Canvas element for this tile.\n * @return {HTMLCanvasElement} Canvas.\n */\n ReprojTile.prototype.getImage = function getImage () {\n return this.canvas_;\n };\n\n /**\n * @private\n */\n ReprojTile.prototype.reproject_ = function reproject_ () {\n var sources = [];\n this.sourceTiles_.forEach(function(tile, i, arr) {\n if (tile && tile.getState() == TileState.LOADED) {\n sources.push({\n extent: this.sourceTileGrid_.getTileCoordExtent(tile.tileCoord),\n image: tile.getImage()\n });\n }\n }.bind(this));\n this.sourceTiles_.length = 0;\n\n if (sources.length === 0) {\n this.state = TileState.ERROR;\n } else {\n var z = this.wrappedTileCoord_[0];\n var size = this.targetTileGrid_.getTileSize(z);\n var width = typeof size === 'number' ? size : size[0];\n var height = typeof size === 'number' ? size : size[1];\n var targetResolution = this.targetTileGrid_.getResolution(z);\n var sourceResolution = this.sourceTileGrid_.getResolution(this.sourceZ_);\n\n var targetExtent = this.targetTileGrid_.getTileCoordExtent(\n this.wrappedTileCoord_);\n this.canvas_ = renderReprojected(width, height, this.pixelRatio_,\n sourceResolution, this.sourceTileGrid_.getExtent(),\n targetResolution, targetExtent, this.triangulation_, sources,\n this.gutter_, this.renderEdges_);\n\n this.state = TileState.LOADED;\n }\n this.changed();\n };\n\n /**\n * @inheritDoc\n */\n ReprojTile.prototype.load = function load () {\n if (this.state == TileState.IDLE) {\n this.state = TileState.LOADING;\n this.changed();\n\n var leftToLoad = 0;\n\n this.sourcesListenerKeys_ = [];\n this.sourceTiles_.forEach(function(tile, i, arr) {\n var state = tile.getState();\n if (state == TileState.IDLE || state == TileState.LOADING) {\n leftToLoad++;\n\n var sourceListenKey = listen(tile, EventType.CHANGE,\n function(e) {\n var state = tile.getState();\n if (state == TileState.LOADED ||\n state == TileState.ERROR ||\n state == TileState.EMPTY) {\n unlistenByKey(sourceListenKey);\n leftToLoad--;\n if (leftToLoad === 0) {\n this.unlistenSources_();\n this.reproject_();\n }\n }\n }, this);\n this.sourcesListenerKeys_.push(sourceListenKey);\n }\n }.bind(this));\n\n this.sourceTiles_.forEach(function(tile, i, arr) {\n var state = tile.getState();\n if (state == TileState.IDLE) {\n tile.load();\n }\n });\n\n if (leftToLoad === 0) {\n setTimeout(this.reproject_.bind(this), 0);\n }\n }\n };\n\n /**\n * @private\n */\n ReprojTile.prototype.unlistenSources_ = function unlistenSources_ () {\n this.sourcesListenerKeys_.forEach(unlistenByKey);\n this.sourcesListenerKeys_ = null;\n };\n\n return ReprojTile;\n}(Tile));\n\n\nexport default ReprojTile;\n\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/tileurlfunction\n */\nimport {assert} from './asserts.js';\nimport {modulo} from './math.js';\nimport {hash as tileCoordHash} from './tilecoord.js';\n\n\n/**\n * @param {string} template Template.\n * @param {import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTemplate(template, tileGrid) {\n var zRegEx = /\\{z\\}/g;\n var xRegEx = /\\{x\\}/g;\n var yRegEx = /\\{y\\}/g;\n var dashYRegEx = /\\{-y\\}/g;\n return (\n /**\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile Coordinate.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {string|undefined} Tile URL.\n */\n function(tileCoord, pixelRatio, projection) {\n if (!tileCoord) {\n return undefined;\n } else {\n return template.replace(zRegEx, tileCoord[0].toString())\n .replace(xRegEx, tileCoord[1].toString())\n .replace(yRegEx, function() {\n var y = -tileCoord[2] - 1;\n return y.toString();\n })\n .replace(dashYRegEx, function() {\n var z = tileCoord[0];\n var range = tileGrid.getFullTileRange(z);\n assert(range, 55); // The {-y} placeholder requires a tile grid with extent\n var y = range.getHeight() + tileCoord[2];\n return y.toString();\n });\n }\n }\n );\n}\n\n\n/**\n * @param {Array<string>} templates Templates.\n * @param {import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTemplates(templates, tileGrid) {\n var len = templates.length;\n var tileUrlFunctions = new Array(len);\n for (var i = 0; i < len; ++i) {\n tileUrlFunctions[i] = createFromTemplate(templates[i], tileGrid);\n }\n return createFromTileUrlFunctions(tileUrlFunctions);\n}\n\n\n/**\n * @param {Array<import(\"./Tile.js\").UrlFunction>} tileUrlFunctions Tile URL Functions.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTileUrlFunctions(tileUrlFunctions) {\n if (tileUrlFunctions.length === 1) {\n return tileUrlFunctions[0];\n }\n return (\n /**\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile Coordinate.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {string|undefined} Tile URL.\n */\n function(tileCoord, pixelRatio, projection) {\n if (!tileCoord) {\n return undefined;\n } else {\n var h = tileCoordHash(tileCoord);\n var index = modulo(h, tileUrlFunctions.length);\n return tileUrlFunctions[index](tileCoord, pixelRatio, projection);\n }\n }\n );\n}\n\n\n/**\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {string|undefined} Tile URL.\n */\nexport function nullTileUrlFunction(tileCoord, pixelRatio, projection) {\n return undefined;\n}\n\n\n/**\n * @param {string} url URL.\n * @return {Array<string>} Array of urls.\n */\nexport function expandUrl(url) {\n var urls = [];\n var match = /\\{([a-z])-([a-z])\\}/.exec(url);\n if (match) {\n // char range\n var startCharCode = match[1].charCodeAt(0);\n var stopCharCode = match[2].charCodeAt(0);\n var charCode;\n for (charCode = startCharCode; charCode <= stopCharCode; ++charCode) {\n urls.push(url.replace(match[0], String.fromCharCode(charCode)));\n }\n return urls;\n }\n match = match = /\\{(\\d+)-(\\d+)\\}/.exec(url);\n if (match) {\n // number range\n var stop = parseInt(match[2], 10);\n for (var i = parseInt(match[1], 10); i <= stop; i++) {\n urls.push(url.replace(match[0], i.toString()));\n }\n return urls;\n }\n urls.push(url);\n return urls;\n}\n\n//# sourceMappingURL=tileurlfunction.js.map","/**\n * @module ol/source/Source\n */\nimport {abstract} from '../util.js';\nimport BaseObject from '../Object.js';\nimport {get as getProjection} from '../proj.js';\nimport SourceState from './State.js';\n\n\n/**\n * A function that returns a string or an array of strings representing source\n * attributions.\n *\n * @typedef {function(import(\"../PluggableMap.js\").FrameState): (string|Array<string>)} Attribution\n */\n\n\n/**\n * A type that can be used to provide attribution information for data sources.\n *\n * It represents either\n * * a simple string (e.g. `'© Acme Inc.'`)\n * * an array of simple strings (e.g. `['© Acme Inc.', '© Bacme Inc.']`)\n * * a function that returns a string or array of strings (`{@link module:ol/source/Source~Attribution}`)\n *\n * @typedef {string|Array<string>|Attribution} AttributionLike\n */\n\n\n/**\n * @typedef {Object} Options\n * @property {AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {import(\"../proj.js\").ProjectionLike} projection\n * @property {SourceState} [state='ready']\n * @property {boolean} [wrapX=false]\n */\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for {@link module:ol/layer/Layer~Layer} sources.\n *\n * A generic `change` event is triggered when the state of the source changes.\n * @abstract\n * @api\n */\nvar Source = /*@__PURE__*/(function (BaseObject) {\n function Source(options) {\n\n BaseObject.call(this);\n\n /**\n * @private\n * @type {import(\"../proj/Projection.js\").default}\n */\n this.projection_ = getProjection(options.projection);\n\n /**\n * @private\n * @type {?Attribution}\n */\n this.attributions_ = adaptAttributions(options.attributions);\n\n /**\n * @private\n * @type {boolean}\n */\n this.attributionsCollapsible_ = options.attributionsCollapsible !== undefined ?\n options.attributionsCollapsible : true;\n\n /**\n * This source is currently loading data. Sources that defer loading to the\n * map's tile queue never set this to `true`.\n * @type {boolean}\n */\n this.loading = false;\n\n /**\n * @private\n * @type {SourceState}\n */\n this.state_ = options.state !== undefined ?\n options.state : SourceState.READY;\n\n /**\n * @private\n * @type {boolean}\n */\n this.wrapX_ = options.wrapX !== undefined ? options.wrapX : false;\n\n }\n\n if ( BaseObject ) Source.__proto__ = BaseObject;\n Source.prototype = Object.create( BaseObject && BaseObject.prototype );\n Source.prototype.constructor = Source;\n\n /**\n * Get the attribution function for the source.\n * @return {?Attribution} Attribution function.\n */\n Source.prototype.getAttributions = function getAttributions () {\n return this.attributions_;\n };\n\n /**\n * @return {boolean} Aattributions are collapsible.\n */\n Source.prototype.getAttributionsCollapsible = function getAttributionsCollapsible () {\n return this.attributionsCollapsible_;\n };\n\n /**\n * Get the projection of the source.\n * @return {import(\"../proj/Projection.js\").default} Projection.\n * @api\n */\n Source.prototype.getProjection = function getProjection () {\n return this.projection_;\n };\n\n /**\n * @abstract\n * @return {Array<number>|undefined} Resolutions.\n */\n Source.prototype.getResolutions = function getResolutions () {\n return abstract();\n };\n\n /**\n * Get the state of the source, see {@link module:ol/source/State~State} for possible states.\n * @return {SourceState} State.\n * @api\n */\n Source.prototype.getState = function getState () {\n return this.state_;\n };\n\n /**\n * @return {boolean|undefined} Wrap X.\n */\n Source.prototype.getWrapX = function getWrapX () {\n return this.wrapX_;\n };\n\n /**\n * Refreshes the source and finally dispatches a 'change' event.\n * @api\n */\n Source.prototype.refresh = function refresh () {\n this.changed();\n };\n\n /**\n * Set the attributions of the source.\n * @param {AttributionLike|undefined} attributions Attributions.\n * Can be passed as `string`, `Array<string>`, `{@link module:ol/source/Source~Attribution}`,\n * or `undefined`.\n * @api\n */\n Source.prototype.setAttributions = function setAttributions (attributions) {\n this.attributions_ = adaptAttributions(attributions);\n this.changed();\n };\n\n /**\n * Set the state of the source.\n * @param {SourceState} state State.\n * @protected\n */\n Source.prototype.setState = function setState (state) {\n this.state_ = state;\n this.changed();\n };\n\n return Source;\n}(BaseObject));\n\n\n/**\n * Turns the attributions option into an attributions function.\n * @param {AttributionLike|undefined} attributionLike The attribution option.\n * @return {?Attribution} An attribution function (or null).\n */\nfunction adaptAttributions(attributionLike) {\n if (!attributionLike) {\n return null;\n }\n if (Array.isArray(attributionLike)) {\n return function(frameState) {\n return attributionLike;\n };\n }\n\n if (typeof attributionLike === 'function') {\n return attributionLike;\n }\n\n return function(frameState) {\n return [attributionLike];\n };\n}\n\n\nexport default Source;\n\n//# sourceMappingURL=Source.js.map","/**\n * @module ol/tilegrid/TileGrid\n */\nimport {DEFAULT_TILE_SIZE} from './common.js';\nimport {assert} from '../asserts.js';\nimport TileRange, {createOrUpdate as createOrUpdateTileRange} from '../TileRange.js';\nimport {isSorted, linearFindNearest} from '../array.js';\nimport {createOrUpdate, getTopLeft} from '../extent.js';\nimport {clamp} from '../math.js';\nimport {toSize} from '../size.js';\nimport {createOrUpdate as createOrUpdateTileCoord} from '../tilecoord.js';\n\n\n/**\n * @private\n * @type {import(\"../tilecoord.js\").TileCoord}\n */\nvar tmpTileCoord = [0, 0, 0];\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"../extent.js\").Extent} [extent] Extent for the tile grid. No tiles outside this\n * extent will be requested by {@link module:ol/source/Tile} sources. When no `origin` or\n * `origins` are configured, the `origin` will be set to the top-left corner of the extent.\n * @property {number} [minZoom=0] Minimum zoom.\n * @property {import(\"../coordinate.js\").Coordinate} [origin] The tile grid origin, i.e. where the `x`\n * and `y` axes meet (`[z, 0, 0]`). Tile coordinates increase left to right and upwards. If not\n * specified, `extent` or `origins` must be provided.\n * @property {Array<import(\"../coordinate.js\").Coordinate>} [origins] Tile grid origins, i.e. where\n * the `x` and `y` axes meet (`[z, 0, 0]`), for each zoom level. If given, the array length\n * should match the length of the `resolutions` array, i.e. each resolution can have a different\n * origin. Tile coordinates increase left to right and upwards. If not specified, `extent` or\n * `origin` must be provided.\n * @property {!Array<number>} resolutions Resolutions. The array index of each resolution needs\n * to match the zoom level. This means that even if a `minZoom` is configured, the resolutions\n * array will have a length of `maxZoom + 1`.\n * @property {Array<import(\"../size.js\").Size>} [sizes] Sizes.\n * @property {number|import(\"../size.js\").Size} [tileSize] Tile size.\n * Default is `[256, 256]`.\n * @property {Array<import(\"../size.js\").Size>} [tileSizes] Tile sizes. If given, the array length\n * should match the length of the `resolutions` array, i.e. each resolution can have a different\n * tile size.\n */\n\n\n/**\n * @classdesc\n * Base class for setting the grid pattern for sources accessing tiled-image\n * servers.\n * @api\n */\nvar TileGrid = function TileGrid(options) {\n\n /**\n * @protected\n * @type {number}\n */\n this.minZoom = options.minZoom !== undefined ? options.minZoom : 0;\n\n /**\n * @private\n * @type {!Array<number>}\n */\n this.resolutions_ = options.resolutions;\n assert(isSorted(this.resolutions_, function(a, b) {\n return b - a;\n }, true), 17); // `resolutions` must be sorted in descending order\n\n\n // check if we've got a consistent zoom factor and origin\n var zoomFactor;\n if (!options.origins) {\n for (var i = 0, ii = this.resolutions_.length - 1; i < ii; ++i) {\n if (!zoomFactor) {\n zoomFactor = this.resolutions_[i] / this.resolutions_[i + 1];\n } else {\n if (this.resolutions_[i] / this.resolutions_[i + 1] !== zoomFactor) {\n zoomFactor = undefined;\n break;\n }\n }\n }\n }\n\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.zoomFactor_ = zoomFactor;\n\n\n /**\n * @protected\n * @type {number}\n */\n this.maxZoom = this.resolutions_.length - 1;\n\n /**\n * @private\n * @type {import(\"../coordinate.js\").Coordinate}\n */\n this.origin_ = options.origin !== undefined ? options.origin : null;\n\n /**\n * @private\n * @type {Array<import(\"../coordinate.js\").Coordinate>}\n */\n this.origins_ = null;\n if (options.origins !== undefined) {\n this.origins_ = options.origins;\n assert(this.origins_.length == this.resolutions_.length,\n 20); // Number of `origins` and `resolutions` must be equal\n }\n\n var extent = options.extent;\n\n if (extent !== undefined &&\n !this.origin_ && !this.origins_) {\n this.origin_ = getTopLeft(extent);\n }\n\n assert(\n (!this.origin_ && this.origins_) || (this.origin_ && !this.origins_),\n 18); // Either `origin` or `origins` must be configured, never both\n\n /**\n * @private\n * @type {Array<number|import(\"../size.js\").Size>}\n */\n this.tileSizes_ = null;\n if (options.tileSizes !== undefined) {\n this.tileSizes_ = options.tileSizes;\n assert(this.tileSizes_.length == this.resolutions_.length,\n 19); // Number of `tileSizes` and `resolutions` must be equal\n }\n\n /**\n * @private\n * @type {number|import(\"../size.js\").Size}\n */\n this.tileSize_ = options.tileSize !== undefined ?\n options.tileSize :\n !this.tileSizes_ ? DEFAULT_TILE_SIZE : null;\n assert(\n (!this.tileSize_ && this.tileSizes_) ||\n (this.tileSize_ && !this.tileSizes_),\n 22); // Either `tileSize` or `tileSizes` must be configured, never both\n\n /**\n * @private\n * @type {import(\"../extent.js\").Extent}\n */\n this.extent_ = extent !== undefined ? extent : null;\n\n\n /**\n * @private\n * @type {Array<import(\"../TileRange.js\").default>}\n */\n this.fullTileRanges_ = null;\n\n /**\n * @private\n * @type {import(\"../size.js\").Size}\n */\n this.tmpSize_ = [0, 0];\n\n if (options.sizes !== undefined) {\n this.fullTileRanges_ = options.sizes.map(function(size, z) {\n var tileRange = new TileRange(\n Math.min(0, size[0]), Math.max(size[0] - 1, -1),\n Math.min(0, size[1]), Math.max(size[1] - 1, -1));\n return tileRange;\n }, this);\n } else if (extent) {\n this.calculateTileRanges_(extent);\n }\n\n};\n\n/**\n * Call a function with each tile coordinate for a given extent and zoom level.\n *\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @param {number} zoom Integer zoom level.\n * @param {function(import(\"../tilecoord.js\").TileCoord)} callback Function called with each tile coordinate.\n * @api\n */\nTileGrid.prototype.forEachTileCoord = function forEachTileCoord (extent, zoom, callback) {\n var tileRange = this.getTileRangeForExtentAndZ(extent, zoom);\n for (var i = tileRange.minX, ii = tileRange.maxX; i <= ii; ++i) {\n for (var j = tileRange.minY, jj = tileRange.maxY; j <= jj; ++j) {\n callback([zoom, i, j]);\n }\n }\n};\n\n/**\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {function(this: T, number, import(\"../TileRange.js\").default): boolean} callback Callback.\n * @param {T=} opt_this The object to use as `this` in `callback`.\n * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary import(\"../TileRange.js\").default object.\n * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n * @return {boolean} Callback succeeded.\n * @template T\n */\nTileGrid.prototype.forEachTileCoordParentTileRange = function forEachTileCoordParentTileRange (tileCoord, callback, opt_this, opt_tileRange, opt_extent) {\n var tileRange, x, y;\n var tileCoordExtent = null;\n var z = tileCoord[0] - 1;\n if (this.zoomFactor_ === 2) {\n x = tileCoord[1];\n y = tileCoord[2];\n } else {\n tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);\n }\n while (z >= this.minZoom) {\n if (this.zoomFactor_ === 2) {\n x = Math.floor(x / 2);\n y = Math.floor(y / 2);\n tileRange = createOrUpdateTileRange(x, x, y, y, opt_tileRange);\n } else {\n tileRange = this.getTileRangeForExtentAndZ(tileCoordExtent, z, opt_tileRange);\n }\n if (callback.call(opt_this, z, tileRange)) {\n return true;\n }\n --z;\n }\n return false;\n};\n\n/**\n * Get the extent for this tile grid, if it was configured.\n * @return {import(\"../extent.js\").Extent} Extent.\n */\nTileGrid.prototype.getExtent = function getExtent () {\n return this.extent_;\n};\n\n/**\n * Get the maximum zoom level for the grid.\n * @return {number} Max zoom.\n * @api\n */\nTileGrid.prototype.getMaxZoom = function getMaxZoom () {\n return this.maxZoom;\n};\n\n/**\n * Get the minimum zoom level for the grid.\n * @return {number} Min zoom.\n * @api\n */\nTileGrid.prototype.getMinZoom = function getMinZoom () {\n return this.minZoom;\n};\n\n/**\n * Get the origin for the grid at the given zoom level.\n * @param {number} z Integer zoom level.\n * @return {import(\"../coordinate.js\").Coordinate} Origin.\n * @api\n */\nTileGrid.prototype.getOrigin = function getOrigin (z) {\n if (this.origin_) {\n return this.origin_;\n } else {\n return this.origins_[z];\n }\n};\n\n/**\n * Get the resolution for the given zoom level.\n * @param {number} z Integer zoom level.\n * @return {number} Resolution.\n * @api\n */\nTileGrid.prototype.getResolution = function getResolution (z) {\n return this.resolutions_[z];\n};\n\n/**\n * Get the list of resolutions for the tile grid.\n * @return {Array<number>} Resolutions.\n * @api\n */\nTileGrid.prototype.getResolutions = function getResolutions () {\n return this.resolutions_;\n};\n\n/**\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary import(\"../TileRange.js\").default object.\n * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n * @return {import(\"../TileRange.js\").default} Tile range.\n */\nTileGrid.prototype.getTileCoordChildTileRange = function getTileCoordChildTileRange (tileCoord, opt_tileRange, opt_extent) {\n if (tileCoord[0] < this.maxZoom) {\n if (this.zoomFactor_ === 2) {\n var minX = tileCoord[1] * 2;\n var minY = tileCoord[2] * 2;\n return createOrUpdateTileRange(minX, minX + 1, minY, minY + 1, opt_tileRange);\n }\n var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);\n return this.getTileRangeForExtentAndZ(\n tileCoordExtent, tileCoord[0] + 1, opt_tileRange);\n }\n return null;\n};\n\n/**\n * Get the extent for a tile range.\n * @param {number} z Integer zoom level.\n * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n * @return {import(\"../extent.js\").Extent} Extent.\n */\nTileGrid.prototype.getTileRangeExtent = function getTileRangeExtent (z, tileRange, opt_extent) {\n var origin = this.getOrigin(z);\n var resolution = this.getResolution(z);\n var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n var minX = origin[0] + tileRange.minX * tileSize[0] * resolution;\n var maxX = origin[0] + (tileRange.maxX + 1) * tileSize[0] * resolution;\n var minY = origin[1] + tileRange.minY * tileSize[1] * resolution;\n var maxY = origin[1] + (tileRange.maxY + 1) * tileSize[1] * resolution;\n return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n};\n\n/**\n * Get a tile range for the given extent and integer zoom level.\n * @param {import(\"../extent.js\").Extent} extent Extent.\n * @param {number} z Integer zoom level.\n * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary tile range object.\n * @return {import(\"../TileRange.js\").default} Tile range.\n */\nTileGrid.prototype.getTileRangeForExtentAndZ = function getTileRangeForExtentAndZ (extent, z, opt_tileRange) {\n var tileCoord = tmpTileCoord;\n this.getTileCoordForXYAndZ_(extent[0], extent[1], z, false, tileCoord);\n var minX = tileCoord[1];\n var minY = tileCoord[2];\n this.getTileCoordForXYAndZ_(extent[2], extent[3], z, true, tileCoord);\n return createOrUpdateTileRange(minX, tileCoord[1], minY, tileCoord[2], opt_tileRange);\n};\n\n/**\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @return {import(\"../coordinate.js\").Coordinate} Tile center.\n */\nTileGrid.prototype.getTileCoordCenter = function getTileCoordCenter (tileCoord) {\n var origin = this.getOrigin(tileCoord[0]);\n var resolution = this.getResolution(tileCoord[0]);\n var tileSize = toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);\n return [\n origin[0] + (tileCoord[1] + 0.5) * tileSize[0] * resolution,\n origin[1] + (tileCoord[2] + 0.5) * tileSize[1] * resolution\n ];\n};\n\n/**\n * Get the extent of a tile coordinate.\n *\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {import(\"../extent.js\").Extent=} opt_extent Temporary extent object.\n * @return {import(\"../extent.js\").Extent} Extent.\n * @api\n */\nTileGrid.prototype.getTileCoordExtent = function getTileCoordExtent (tileCoord, opt_extent) {\n var origin = this.getOrigin(tileCoord[0]);\n var resolution = this.getResolution(tileCoord[0]);\n var tileSize = toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);\n var minX = origin[0] + tileCoord[1] * tileSize[0] * resolution;\n var minY = origin[1] + tileCoord[2] * tileSize[1] * resolution;\n var maxX = minX + tileSize[0] * resolution;\n var maxY = minY + tileSize[1] * resolution;\n return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n};\n\n/**\n * Get the tile coordinate for the given map coordinate and resolution.This\n * method considers that coordinates that intersect tile boundaries should be\n * assigned the higher tile coordinate.\n *\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {number} resolution Resolution.\n * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Destination import(\"../tilecoord.js\").TileCoord object.\n * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n * @api\n */\nTileGrid.prototype.getTileCoordForCoordAndResolution = function getTileCoordForCoordAndResolution (coordinate, resolution, opt_tileCoord) {\n return this.getTileCoordForXYAndResolution_(\n coordinate[0], coordinate[1], resolution, false, opt_tileCoord);\n};\n\n/**\n * Note that this method should not be called for resolutions that correspond\n * to an integer zoom level.Instead call the `getTileCoordForXYAndZ_` method.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {number} resolution Resolution (for a non-integer zoom level).\n * @param {boolean} reverseIntersectionPolicy Instead of letting edge\n * intersections go to the higher tile coordinate, let edge intersections\n * go to the lower tile coordinate.\n * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Temporary import(\"../tilecoord.js\").TileCoord object.\n * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n * @private\n */\nTileGrid.prototype.getTileCoordForXYAndResolution_ = function getTileCoordForXYAndResolution_ (x, y, resolution, reverseIntersectionPolicy, opt_tileCoord) {\n var z = this.getZForResolution(resolution);\n var scale = resolution / this.getResolution(z);\n var origin = this.getOrigin(z);\n var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n\n var adjustX = reverseIntersectionPolicy ? 0.5 : 0;\n var adjustY = reverseIntersectionPolicy ? 0 : 0.5;\n var xFromOrigin = Math.floor((x - origin[0]) / resolution + adjustX);\n var yFromOrigin = Math.floor((y - origin[1]) / resolution + adjustY);\n var tileCoordX = scale * xFromOrigin / tileSize[0];\n var tileCoordY = scale * yFromOrigin / tileSize[1];\n\n if (reverseIntersectionPolicy) {\n tileCoordX = Math.ceil(tileCoordX) - 1;\n tileCoordY = Math.ceil(tileCoordY) - 1;\n } else {\n tileCoordX = Math.floor(tileCoordX);\n tileCoordY = Math.floor(tileCoordY);\n }\n\n return createOrUpdateTileCoord(z, tileCoordX, tileCoordY, opt_tileCoord);\n};\n\n/**\n * Although there is repetition between this method and `getTileCoordForXYAndResolution_`,\n * they should have separate implementations.This method is for integer zoom\n * levels.The other method should only be called for resolutions corresponding\n * to non-integer zoom levels.\n * @param {number} x Map x coordinate.\n * @param {number} y Map y coordinate.\n * @param {number} z Integer zoom level.\n * @param {boolean} reverseIntersectionPolicy Instead of letting edge\n * intersections go to the higher tile coordinate, let edge intersections\n * go to the lower tile coordinate.\n * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Temporary import(\"../tilecoord.js\").TileCoord object.\n * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n * @private\n */\nTileGrid.prototype.getTileCoordForXYAndZ_ = function getTileCoordForXYAndZ_ (x, y, z, reverseIntersectionPolicy, opt_tileCoord) {\n var origin = this.getOrigin(z);\n var resolution = this.getResolution(z);\n var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n\n var adjustX = reverseIntersectionPolicy ? 0.5 : 0;\n var adjustY = reverseIntersectionPolicy ? 0 : 0.5;\n var xFromOrigin = Math.floor((x - origin[0]) / resolution + adjustX);\n var yFromOrigin = Math.floor((y - origin[1]) / resolution + adjustY);\n var tileCoordX = xFromOrigin / tileSize[0];\n var tileCoordY = yFromOrigin / tileSize[1];\n\n if (reverseIntersectionPolicy) {\n tileCoordX = Math.ceil(tileCoordX) - 1;\n tileCoordY = Math.ceil(tileCoordY) - 1;\n } else {\n tileCoordX = Math.floor(tileCoordX);\n tileCoordY = Math.floor(tileCoordY);\n }\n\n return createOrUpdateTileCoord(z, tileCoordX, tileCoordY, opt_tileCoord);\n};\n\n/**\n * Get a tile coordinate given a map coordinate and zoom level.\n * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {number} z Zoom level.\n * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Destination import(\"../tilecoord.js\").TileCoord object.\n * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n * @api\n */\nTileGrid.prototype.getTileCoordForCoordAndZ = function getTileCoordForCoordAndZ (coordinate, z, opt_tileCoord) {\n return this.getTileCoordForXYAndZ_(\n coordinate[0], coordinate[1], z, false, opt_tileCoord);\n};\n\n/**\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @return {number} Tile resolution.\n */\nTileGrid.prototype.getTileCoordResolution = function getTileCoordResolution (tileCoord) {\n return this.resolutions_[tileCoord[0]];\n};\n\n/**\n * Get the tile size for a zoom level. The type of the return value matches the\n * `tileSize` or `tileSizes` that the tile grid was configured with. To always\n * get an `import(\"../size.js\").Size`, run the result through `import(\"../size.js\").Size.toSize()`.\n * @param {number} z Z.\n * @return {number|import(\"../size.js\").Size} Tile size.\n * @api\n */\nTileGrid.prototype.getTileSize = function getTileSize (z) {\n if (this.tileSize_) {\n return this.tileSize_;\n } else {\n return this.tileSizes_[z];\n }\n};\n\n/**\n * @param {number} z Zoom level.\n * @return {import(\"../TileRange.js\").default} Extent tile range for the specified zoom level.\n */\nTileGrid.prototype.getFullTileRange = function getFullTileRange (z) {\n if (!this.fullTileRanges_) {\n return null;\n } else {\n return this.fullTileRanges_[z];\n }\n};\n\n/**\n * @param {number} resolution Resolution.\n * @param {number=} opt_direction If 0, the nearest resolution will be used.\n * If 1, the nearest lower resolution will be used. If -1, the nearest\n * higher resolution will be used. Default is 0.\n * @return {number} Z.\n * @api\n */\nTileGrid.prototype.getZForResolution = function getZForResolution (resolution, opt_direction) {\n var z = linearFindNearest(this.resolutions_, resolution, opt_direction || 0);\n return clamp(z, this.minZoom, this.maxZoom);\n};\n\n/**\n * @param {!import(\"../extent.js\").Extent} extent Extent for this tile grid.\n * @private\n */\nTileGrid.prototype.calculateTileRanges_ = function calculateTileRanges_ (extent) {\n var length = this.resolutions_.length;\n var fullTileRanges = new Array(length);\n for (var z = this.minZoom; z < length; ++z) {\n fullTileRanges[z] = this.getTileRangeForExtentAndZ(extent, z);\n }\n this.fullTileRanges_ = fullTileRanges;\n};\n\n\nexport default TileGrid;\n\n//# sourceMappingURL=TileGrid.js.map","/**\n * @module ol/tilegrid\n */\nimport {DEFAULT_MAX_ZOOM, DEFAULT_TILE_SIZE} from './tilegrid/common.js';\nimport {toSize} from './size.js';\nimport {containsCoordinate, createOrUpdate, getCorner, getHeight, getWidth} from './extent.js';\nimport Corner from './extent/Corner.js';\nimport {get as getProjection, METERS_PER_UNIT} from './proj.js';\nimport Units from './proj/Units.js';\nimport TileGrid from './tilegrid/TileGrid.js';\n\n\n/**\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {!TileGrid} Default tile grid for the\n * passed projection.\n */\nexport function getForProjection(projection) {\n var tileGrid = projection.getDefaultTileGrid();\n if (!tileGrid) {\n tileGrid = createForProjection(projection);\n projection.setDefaultTileGrid(tileGrid);\n }\n return tileGrid;\n}\n\n\n/**\n * @param {TileGrid} tileGrid Tile grid.\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {import(\"./tilecoord.js\").TileCoord} Tile coordinate.\n */\nexport function wrapX(tileGrid, tileCoord, projection) {\n var z = tileCoord[0];\n var center = tileGrid.getTileCoordCenter(tileCoord);\n var projectionExtent = extentFromProjection(projection);\n if (!containsCoordinate(projectionExtent, center)) {\n var worldWidth = getWidth(projectionExtent);\n var worldsAway = Math.ceil((projectionExtent[0] - center[0]) / worldWidth);\n center[0] += worldWidth * worldsAway;\n return tileGrid.getTileCoordForCoordAndZ(center, z);\n } else {\n return tileCoord;\n }\n}\n\n\n/**\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n * DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n * DEFAULT_TILE_SIZE).\n * @param {Corner=} opt_corner Extent corner (default is `'top-left'`).\n * @return {!TileGrid} TileGrid instance.\n */\nexport function createForExtent(extent, opt_maxZoom, opt_tileSize, opt_corner) {\n var corner = opt_corner !== undefined ? opt_corner : Corner.TOP_LEFT;\n\n var resolutions = resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize);\n\n return new TileGrid({\n extent: extent,\n origin: getCorner(extent, corner),\n resolutions: resolutions,\n tileSize: opt_tileSize\n });\n}\n\n\n/**\n * @typedef {Object} XYZOptions\n * @property {import(\"./extent.js\").Extent} [extent] Extent for the tile grid. The origin for an XYZ tile grid is the\n * top-left corner of the extent. The zero level of the grid is defined by the resolution at which one tile fits in the\n * provided extent. If not provided, the extent of the EPSG:3857 projection is used.\n * @property {number} [maxZoom] Maximum zoom. The default is `42`. This determines the number of levels\n * in the grid set. For example, a `maxZoom` of 21 means there are 22 levels in the grid set.\n * @property {number} [minZoom=0] Minimum zoom.\n * @property {number|import(\"./size.js\").Size} [tileSize=[256, 256]] Tile size in pixels.\n */\n\n\n/**\n * Creates a tile grid with a standard XYZ tiling scheme.\n * @param {XYZOptions=} opt_options Tile grid options.\n * @return {!TileGrid} Tile grid instance.\n * @api\n */\nexport function createXYZ(opt_options) {\n /** @type {XYZOptions} */\n var xyzOptions = opt_options || {};\n\n var extent = xyzOptions.extent || getProjection('EPSG:3857').getExtent();\n\n /** @type {import(\"./tilegrid/TileGrid.js\").Options} */\n var gridOptions = {\n extent: extent,\n minZoom: xyzOptions.minZoom,\n tileSize: xyzOptions.tileSize,\n resolutions: resolutionsFromExtent(\n extent,\n xyzOptions.maxZoom,\n xyzOptions.tileSize\n )\n };\n return new TileGrid(gridOptions);\n}\n\n\n/**\n * Create a resolutions array from an extent. A zoom factor of 2 is assumed.\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n * DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n * DEFAULT_TILE_SIZE).\n * @return {!Array<number>} Resolutions array.\n */\nfunction resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize) {\n var maxZoom = opt_maxZoom !== undefined ?\n opt_maxZoom : DEFAULT_MAX_ZOOM;\n\n var height = getHeight(extent);\n var width = getWidth(extent);\n\n var tileSize = toSize(opt_tileSize !== undefined ?\n opt_tileSize : DEFAULT_TILE_SIZE);\n var maxResolution = Math.max(\n width / tileSize[0], height / tileSize[1]);\n\n var length = maxZoom + 1;\n var resolutions = new Array(length);\n for (var z = 0; z < length; ++z) {\n resolutions[z] = maxResolution / Math.pow(2, z);\n }\n return resolutions;\n}\n\n\n/**\n * @param {import(\"./proj.js\").ProjectionLike} projection Projection.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n * DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n * DEFAULT_TILE_SIZE).\n * @param {Corner=} opt_corner Extent corner (default is `'top-left'`).\n * @return {!TileGrid} TileGrid instance.\n */\nexport function createForProjection(projection, opt_maxZoom, opt_tileSize, opt_corner) {\n var extent = extentFromProjection(projection);\n return createForExtent(extent, opt_maxZoom, opt_tileSize, opt_corner);\n}\n\n\n/**\n * Generate a tile grid extent from a projection. If the projection has an\n * extent, it is used. If not, a global extent is assumed.\n * @param {import(\"./proj.js\").ProjectionLike} projection Projection.\n * @return {import(\"./extent.js\").Extent} Extent.\n */\nexport function extentFromProjection(projection) {\n projection = getProjection(projection);\n var extent = projection.getExtent();\n if (!extent) {\n var half = 180 * METERS_PER_UNIT[Units.DEGREES] / projection.getMetersPerUnit();\n extent = createOrUpdate(-half, -half, half, half);\n }\n return extent;\n}\n\n//# sourceMappingURL=tilegrid.js.map","/**\n * @module ol/source/Tile\n */\nimport {abstract} from '../util.js';\nimport TileCache from '../TileCache.js';\nimport TileState from '../TileState.js';\nimport Event from '../events/Event.js';\nimport {equivalent} from '../proj.js';\nimport {toSize, scale as scaleSize} from '../size.js';\nimport Source from './Source.js';\nimport {getKeyZXY, withinExtentAndZ} from '../tilecoord.js';\nimport {wrapX, getForProjection as getTileGridForProjection} from '../tilegrid.js';\n\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize]\n * @property {boolean} [opaque]\n * @property {number} [tilePixelRatio]\n * @property {import(\"../proj.js\").ProjectionLike} [projection]\n * @property {import(\"./State.js\").default} [state]\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid]\n * @property {boolean} [wrapX=true]\n * @property {number} [transition]\n * @property {string} [key]\n */\n\n\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for sources providing images divided into a tile grid.\n * @abstract\n * @api\n */\nvar TileSource = /*@__PURE__*/(function (Source) {\n function TileSource(options) {\n\n Source.call(this, {\n attributions: options.attributions,\n attributionsCollapsible: options.attributionsCollapsible,\n projection: options.projection,\n state: options.state,\n wrapX: options.wrapX\n });\n\n /**\n * @private\n * @type {boolean}\n */\n this.opaque_ = options.opaque !== undefined ? options.opaque : false;\n\n /**\n * @private\n * @type {number}\n */\n this.tilePixelRatio_ = options.tilePixelRatio !== undefined ?\n options.tilePixelRatio : 1;\n\n /**\n * @protected\n * @type {import(\"../tilegrid/TileGrid.js\").default}\n */\n this.tileGrid = options.tileGrid !== undefined ? options.tileGrid : null;\n\n /**\n * @protected\n * @type {import(\"../TileCache.js\").default}\n */\n this.tileCache = new TileCache(options.cacheSize);\n\n /**\n * @protected\n * @type {import(\"../size.js\").Size}\n */\n this.tmpSize = [0, 0];\n\n /**\n * @private\n * @type {string}\n */\n this.key_ = options.key || '';\n\n /**\n * @protected\n * @type {import(\"../Tile.js\").Options}\n */\n this.tileOptions = {transition: options.transition};\n\n }\n\n if ( Source ) TileSource.__proto__ = Source;\n TileSource.prototype = Object.create( Source && Source.prototype );\n TileSource.prototype.constructor = TileSource;\n\n /**\n * @return {boolean} Can expire cache.\n */\n TileSource.prototype.canExpireCache = function canExpireCache () {\n return this.tileCache.canExpireCache();\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @param {!Object<string, import(\"../TileRange.js\").default>} usedTiles Used tiles.\n */\n TileSource.prototype.expireCache = function expireCache (projection, usedTiles) {\n var tileCache = this.getTileCacheForProjection(projection);\n if (tileCache) {\n tileCache.expireCache(usedTiles);\n }\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @param {number} z Zoom level.\n * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n * @param {function(import(\"../Tile.js\").default):(boolean|void)} callback Called with each\n * loaded tile. If the callback returns `false`, the tile will not be\n * considered loaded.\n * @return {boolean} The tile range is fully covered with loaded tiles.\n */\n TileSource.prototype.forEachLoadedTile = function forEachLoadedTile (projection, z, tileRange, callback) {\n var tileCache = this.getTileCacheForProjection(projection);\n if (!tileCache) {\n return false;\n }\n\n var covered = true;\n var tile, tileCoordKey, loaded;\n for (var x = tileRange.minX; x <= tileRange.maxX; ++x) {\n for (var y = tileRange.minY; y <= tileRange.maxY; ++y) {\n tileCoordKey = getKeyZXY(z, x, y);\n loaded = false;\n if (tileCache.containsKey(tileCoordKey)) {\n tile = /** @type {!import(\"../Tile.js\").default} */ (tileCache.get(tileCoordKey));\n loaded = tile.getState() === TileState.LOADED;\n if (loaded) {\n loaded = (callback(tile) !== false);\n }\n }\n if (!loaded) {\n covered = false;\n }\n }\n }\n return covered;\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {number} Gutter.\n */\n TileSource.prototype.getGutterForProjection = function getGutterForProjection (projection) {\n return 0;\n };\n\n /**\n * Return the key to be used for all tiles in the source.\n * @return {string} The key for all tiles.\n * @protected\n */\n TileSource.prototype.getKey = function getKey () {\n return this.key_;\n };\n\n /**\n * Set the value to be used as the key for all tiles in the source.\n * @param {string} key The key for tiles.\n * @protected\n */\n TileSource.prototype.setKey = function setKey (key) {\n if (this.key_ !== key) {\n this.key_ = key;\n this.changed();\n }\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {boolean} Opaque.\n */\n TileSource.prototype.getOpaque = function getOpaque (projection) {\n return this.opaque_;\n };\n\n /**\n * @inheritDoc\n */\n TileSource.prototype.getResolutions = function getResolutions () {\n return this.tileGrid.getResolutions();\n };\n\n /**\n * @abstract\n * @param {number} z Tile coordinate z.\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {!import(\"../Tile.js\").default} Tile.\n */\n TileSource.prototype.getTile = function getTile (z, x, y, pixelRatio, projection) {\n return abstract();\n };\n\n /**\n * Return the tile grid of the tile source.\n * @return {import(\"../tilegrid/TileGrid.js\").default} Tile grid.\n * @api\n */\n TileSource.prototype.getTileGrid = function getTileGrid () {\n return this.tileGrid;\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {!import(\"../tilegrid/TileGrid.js\").default} Tile grid.\n */\n TileSource.prototype.getTileGridForProjection = function getTileGridForProjection$1 (projection) {\n if (!this.tileGrid) {\n return getTileGridForProjection(projection);\n } else {\n return this.tileGrid;\n }\n };\n\n /**\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {import(\"../TileCache.js\").default} Tile cache.\n * @protected\n */\n TileSource.prototype.getTileCacheForProjection = function getTileCacheForProjection (projection) {\n var thisProj = this.getProjection();\n if (thisProj && !equivalent(thisProj, projection)) {\n return null;\n } else {\n return this.tileCache;\n }\n };\n\n /**\n * Get the tile pixel ratio for this source. Subclasses may override this\n * method, which is meant to return a supported pixel ratio that matches the\n * provided `pixelRatio` as close as possible.\n * @param {number} pixelRatio Pixel ratio.\n * @return {number} Tile pixel ratio.\n */\n TileSource.prototype.getTilePixelRatio = function getTilePixelRatio (pixelRatio) {\n return this.tilePixelRatio_;\n };\n\n /**\n * @param {number} z Z.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @return {import(\"../size.js\").Size} Tile size.\n */\n TileSource.prototype.getTilePixelSize = function getTilePixelSize (z, pixelRatio, projection) {\n var tileGrid = this.getTileGridForProjection(projection);\n var tilePixelRatio = this.getTilePixelRatio(pixelRatio);\n var tileSize = toSize(tileGrid.getTileSize(z), this.tmpSize);\n if (tilePixelRatio == 1) {\n return tileSize;\n } else {\n return scaleSize(tileSize, tilePixelRatio, this.tmpSize);\n }\n };\n\n /**\n * Returns a tile coordinate wrapped around the x-axis. When the tile coordinate\n * is outside the resolution and extent range of the tile grid, `null` will be\n * returned.\n * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {import(\"../proj/Projection.js\").default=} opt_projection Projection.\n * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate to be passed to the tileUrlFunction or\n * null if no tile URL should be created for the passed `tileCoord`.\n */\n TileSource.prototype.getTileCoordForTileUrlFunction = function getTileCoordForTileUrlFunction (tileCoord, opt_projection) {\n var projection = opt_projection !== undefined ?\n opt_projection : this.getProjection();\n var tileGrid = this.getTileGridForProjection(projection);\n if (this.getWrapX() && projection.isGlobal()) {\n tileCoord = wrapX(tileGrid, tileCoord, projection);\n }\n return withinExtentAndZ(tileCoord, tileGrid) ? tileCoord : null;\n };\n\n /**\n * @inheritDoc\n */\n TileSource.prototype.refresh = function refresh () {\n this.tileCache.clear();\n this.changed();\n };\n\n /**\n * Marks a tile coord as being used, without triggering a load.\n * @abstract\n * @param {number} z Tile coordinate z.\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n */\n TileSource.prototype.useTile = function useTile (z, x, y, projection) {};\n\n return TileSource;\n}(Source));\n\n\n/**\n * @classdesc\n * Events emitted by {@link module:ol/source/Tile~TileSource} instances are instances of this\n * type.\n */\nexport var TileSourceEvent = /*@__PURE__*/(function (Event) {\n function TileSourceEvent(type, tile) {\n\n Event.call(this, type);\n\n /**\n * The tile related to the event.\n * @type {import(\"../Tile.js\").default}\n * @api\n */\n this.tile = tile;\n\n }\n\n if ( Event ) TileSourceEvent.__proto__ = Event;\n TileSourceEvent.prototype = Object.create( Event && Event.prototype );\n TileSourceEvent.prototype.constructor = TileSourceEvent;\n\n return TileSourceEvent;\n}(Event));\n\nexport default TileSource;\n\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/source/TileEventType\n */\n\n/**\n * @enum {string}\n */\nexport default {\n\n /**\n * Triggered when a tile starts loading.\n * @event module:ol/source/Tile.TileSourceEvent#tileloadstart\n * @api\n */\n TILELOADSTART: 'tileloadstart',\n\n /**\n * Triggered when a tile finishes loading, either when its data is loaded,\n * or when loading was aborted because the tile is no longer needed.\n * @event module:ol/source/Tile.TileSourceEvent#tileloadend\n * @api\n */\n TILELOADEND: 'tileloadend',\n\n /**\n * Triggered if tile loading results in an error.\n * @event module:ol/source/Tile.TileSourceEvent#tileloaderror\n * @api\n */\n TILELOADERROR: 'tileloaderror'\n\n};\n\n//# sourceMappingURL=TileEventType.js.map","/**\n * @module ol/source/UrlTile\n */\nimport {getUid} from '../util.js';\nimport TileState from '../TileState.js';\nimport {expandUrl, createFromTemplates, nullTileUrlFunction} from '../tileurlfunction.js';\nimport TileSource, {TileSourceEvent} from './Tile.js';\nimport TileEventType from './TileEventType.js';\nimport {getKeyZXY} from '../tilecoord.js';\n\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize]\n * @property {boolean} [opaque]\n * @property {import(\"../proj.js\").ProjectionLike} [projection]\n * @property {import(\"./State.js\").default} [state]\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid]\n * @property {import(\"../Tile.js\").LoadFunction} tileLoadFunction\n * @property {number} [tilePixelRatio]\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction]\n * @property {string} [url]\n * @property {Array<string>} [urls]\n * @property {boolean} [wrapX=true]\n * @property {number} [transition]\n * @property {string} [key]\n */\n\n\n/**\n * @classdesc\n * Base class for sources providing tiles divided into a tile grid over http.\n *\n * @fires import(\"./Tile.js\").TileSourceEvent\n */\nvar UrlTile = /*@__PURE__*/(function (TileSource) {\n function UrlTile(options) {\n\n TileSource.call(this, {\n attributions: options.attributions,\n cacheSize: options.cacheSize,\n opaque: options.opaque,\n projection: options.projection,\n state: options.state,\n tileGrid: options.tileGrid,\n tilePixelRatio: options.tilePixelRatio,\n wrapX: options.wrapX,\n transition: options.transition,\n key: options.key,\n attributionsCollapsible: options.attributionsCollapsible\n });\n\n /**\n * @private\n * @type {boolean}\n */\n this.generateTileUrlFunction_ = !options.tileUrlFunction;\n\n /**\n * @protected\n * @type {import(\"../Tile.js\").LoadFunction}\n */\n this.tileLoadFunction = options.tileLoadFunction;\n\n /**\n * @protected\n * @type {import(\"../Tile.js\").UrlFunction}\n */\n this.tileUrlFunction = options.tileUrlFunction ? options.tileUrlFunction.bind(this) : nullTileUrlFunction;\n\n /**\n * @protected\n * @type {!Array<string>|null}\n */\n this.urls = null;\n\n if (options.urls) {\n this.setUrls(options.urls);\n } else if (options.url) {\n this.setUrl(options.url);\n }\n\n if (options.tileUrlFunction) {\n this.setTileUrlFunction(options.tileUrlFunction, this.key_);\n }\n\n /**\n * @private\n * @type {!Object<string, boolean>}\n */\n this.tileLoadingKeys_ = {};\n\n }\n\n if ( TileSource ) UrlTile.__proto__ = TileSource;\n UrlTile.prototype = Object.create( TileSource && TileSource.prototype );\n UrlTile.prototype.constructor = UrlTile;\n\n /**\n * Return the tile load function of the source.\n * @return {import(\"../Tile.js\").LoadFunction} TileLoadFunction\n * @api\n */\n UrlTile.prototype.getTileLoadFunction = function getTileLoadFunction () {\n return this.tileLoadFunction;\n };\n\n /**\n * Return the tile URL function of the source.\n * @return {import(\"../Tile.js\").UrlFunction} TileUrlFunction\n * @api\n */\n UrlTile.prototype.getTileUrlFunction = function getTileUrlFunction () {\n return this.tileUrlFunction;\n };\n\n /**\n * Return the URLs used for this source.\n * When a tileUrlFunction is used instead of url or urls,\n * null will be returned.\n * @return {!Array<string>|null} URLs.\n * @api\n */\n UrlTile.prototype.getUrls = function getUrls () {\n return this.urls;\n };\n\n /**\n * Handle tile change events.\n * @param {import(\"../events/Event.js\").default} event Event.\n * @protected\n */\n UrlTile.prototype.handleTileChange = function handleTileChange (event) {\n var tile = /** @type {import(\"../Tile.js\").default} */ (event.target);\n var uid = getUid(tile);\n var tileState = tile.getState();\n var type;\n if (tileState == TileState.LOADING) {\n this.tileLoadingKeys_[uid] = true;\n type = TileEventType.TILELOADSTART;\n } else if (uid in this.tileLoadingKeys_) {\n delete this.tileLoadingKeys_[uid];\n type = tileState == TileState.ERROR ? TileEventType.TILELOADERROR :\n (tileState == TileState.LOADED || tileState == TileState.ABORT) ?\n TileEventType.TILELOADEND : undefined;\n }\n if (type != undefined) {\n this.dispatchEvent(new TileSourceEvent(type, tile));\n }\n };\n\n /**\n * Set the tile load function of the source.\n * @param {import(\"../Tile.js\").LoadFunction} tileLoadFunction Tile load function.\n * @api\n */\n UrlTile.prototype.setTileLoadFunction = function setTileLoadFunction (tileLoadFunction) {\n this.tileCache.clear();\n this.tileLoadFunction = tileLoadFunction;\n this.changed();\n };\n\n /**\n * Set the tile URL function of the source.\n * @param {import(\"../Tile.js\").UrlFunction} tileUrlFunction Tile URL function.\n * @param {string=} key Optional new tile key for the source.\n * @api\n */\n UrlTile.prototype.setTileUrlFunction = function setTileUrlFunction (tileUrlFunction, key) {\n this.tileUrlFunction = tileUrlFunction;\n this.tileCache.pruneExceptNewestZ();\n if (typeof key !== 'undefined') {\n this.setKey(key);\n } else {\n this.changed();\n }\n };\n\n /**\n * Set the URL to use for requests.\n * @param {string} url URL.\n * @api\n */\n UrlTile.prototype.setUrl = function setUrl (url) {\n var urls = this.urls = expandUrl(url);\n this.setUrls(urls);\n };\n\n /**\n * Set the URLs to use for requests.\n * @param {Array<string>} urls URLs.\n * @api\n */\n UrlTile.prototype.setUrls = function setUrls (urls) {\n this.urls = urls;\n var key = urls.join('\\n');\n if (this.generateTileUrlFunction_) {\n this.setTileUrlFunction(createFromTemplates(urls, this.tileGrid), key);\n } else {\n this.setKey(key);\n }\n };\n\n /**\n * @inheritDoc\n */\n UrlTile.prototype.useTile = function useTile (z, x, y) {\n var tileCoordKey = getKeyZXY(z, x, y);\n if (this.tileCache.containsKey(tileCoordKey)) {\n this.tileCache.get(tileCoordKey);\n }\n };\n\n return UrlTile;\n}(TileSource));\n\n\nexport default UrlTile;\n\n//# sourceMappingURL=UrlTile.js.map","/**\n * @module ol/source/TileImage\n */\nimport {ENABLE_RASTER_REPROJECTION} from '../reproj/common.js';\nimport {getUid} from '../util.js';\nimport ImageTile from '../ImageTile.js';\nimport TileCache from '../TileCache.js';\nimport TileState from '../TileState.js';\nimport {listen} from '../events.js';\nimport EventType from '../events/EventType.js';\nimport {equivalent, get as getProjection} from '../proj.js';\nimport ReprojTile from '../reproj/Tile.js';\nimport UrlTile from './UrlTile.js';\nimport {getKey, getKeyZXY} from '../tilecoord.js';\nimport {getForProjection as getTileGridForProjection} from '../tilegrid.js';\n\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize=2048] Cache size.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images. Note that\n * you must provide a `crossOrigin` value if you are using the WebGL renderer or if you want to\n * access pixel data with the Canvas renderer. See\n * https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {import(\"../proj.js\").ProjectionLike} projection Projection.\n * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {import(\"./State.js\").default} [state] Source state.\n * @property {typeof import(\"../ImageTile.js\").default} [tileClass] Class used to instantiate image tiles.\n * Default is {@link module:ol/ImageTile~ImageTile}.\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid] Tile grid.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n * imageTile.getImage().src = src;\n * };\n * ```\n * @property {number} [tilePixelRatio=1] The pixel ratio used by the tile service. For example, if the tile\n * service advertizes 256px by 256px tiles but actually sends 512px\n * by 512px images (for retina/hidpi devices) then `tilePixelRatio`\n * should be set to `2`.\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction] Optional function to get tile URL given a tile coordinate and the projection.\n * @property {string} [url] URL template. Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.\n * A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`, may be\n * used instead of defining each one separately in the `urls` option.\n * @property {Array<string>} [urls] An array of URL templates.\n * @property {boolean} [wrapX] Whether to wrap the world horizontally. The default, is to\n * request out-of-bounds tiles from the server. When set to `false`, only one\n * world will be rendered. When set to `true`, tiles will be requested for one\n * world only, but they will be wrapped horizontally to render multiple worlds.\n * @property {number} [transition] Duration of the opacity transition for rendering.\n * To disable the opacity transition, pass `transition: 0`.\n * @property {string} [key] Optional tile key for proper cache fetching\n */\n\n\n/**\n * @classdesc\n * Base class for sources providing images divided into a tile grid.\n *\n * @fires import(\"./Tile.js\").TileSourceEvent\n * @api\n */\nvar TileImage = /*@__PURE__*/(function (UrlTile) {\n function TileImage(options) {\n\n UrlTile.call(this, {\n attributions: options.attributions,\n cacheSize: options.cacheSize,\n opaque: options.opaque,\n projection: options.projection,\n state: options.state,\n tileGrid: options.tileGrid,\n tileLoadFunction: options.tileLoadFunction ?\n options.tileLoadFunction : defaultTileLoadFunction,\n tilePixelRatio: options.tilePixelRatio,\n tileUrlFunction: options.tileUrlFunction,\n url: options.url,\n urls: options.urls,\n wrapX: options.wrapX,\n transition: options.transition,\n key: options.key,\n attributionsCollapsible: options.attributionsCollapsible\n });\n\n /**\n * @protected\n * @type {?string}\n */\n this.crossOrigin =\n options.crossOrigin !== undefined ? options.crossOrigin : null;\n\n /**\n * @protected\n * @type {typeof ImageTile}\n */\n this.tileClass = options.tileClass !== undefined ?\n options.tileClass : ImageTile;\n\n /**\n * @protected\n * @type {!Object<string, TileCache>}\n */\n this.tileCacheForProjection = {};\n\n /**\n * @protected\n * @type {!Object<string, import(\"../tilegrid/TileGrid.js\").default>}\n */\n this.tileGridForProjection = {};\n\n /**\n * @private\n * @type {number|undefined}\n */\n this.reprojectionErrorThreshold_ = options.reprojectionErrorThreshold;\n\n /**\n * @private\n * @type {boolean}\n */\n this.renderReprojectionEdges_ = false;\n }\n\n if ( UrlTile ) TileImage.__proto__ = UrlTile;\n TileImage.prototype = Object.create( UrlTile && UrlTile.prototype );\n TileImage.prototype.constructor = TileImage;\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.canExpireCache = function canExpireCache () {\n if (!ENABLE_RASTER_REPROJECTION) {\n return UrlTile.prototype.canExpireCache.call(this);\n }\n if (this.tileCache.canExpireCache()) {\n return true;\n } else {\n for (var key in this.tileCacheForProjection) {\n if (this.tileCacheForProjection[key].canExpireCache()) {\n return true;\n }\n }\n }\n return false;\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.expireCache = function expireCache (projection, usedTiles) {\n if (!ENABLE_RASTER_REPROJECTION) {\n UrlTile.prototype.expireCache.call(this, projection, usedTiles);\n return;\n }\n var usedTileCache = this.getTileCacheForProjection(projection);\n\n this.tileCache.expireCache(this.tileCache == usedTileCache ? usedTiles : {});\n for (var id in this.tileCacheForProjection) {\n var tileCache = this.tileCacheForProjection[id];\n tileCache.expireCache(tileCache == usedTileCache ? usedTiles : {});\n }\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.getGutterForProjection = function getGutterForProjection (projection) {\n if (ENABLE_RASTER_REPROJECTION &&\n this.getProjection() && projection && !equivalent(this.getProjection(), projection)) {\n return 0;\n } else {\n return this.getGutter();\n }\n };\n\n /**\n * @return {number} Gutter.\n */\n TileImage.prototype.getGutter = function getGutter () {\n return 0;\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.getOpaque = function getOpaque (projection) {\n if (ENABLE_RASTER_REPROJECTION &&\n this.getProjection() && projection && !equivalent(this.getProjection(), projection)) {\n return false;\n } else {\n return UrlTile.prototype.getOpaque.call(this, projection);\n }\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.getTileGridForProjection = function getTileGridForProjection$1 (projection) {\n if (!ENABLE_RASTER_REPROJECTION) {\n return UrlTile.prototype.getTileGridForProjection.call(this, projection);\n }\n var thisProj = this.getProjection();\n if (this.tileGrid && (!thisProj || equivalent(thisProj, projection))) {\n return this.tileGrid;\n } else {\n var projKey = getUid(projection);\n if (!(projKey in this.tileGridForProjection)) {\n this.tileGridForProjection[projKey] = getTileGridForProjection(projection);\n }\n return (\n /** @type {!import(\"../tilegrid/TileGrid.js\").default} */ (this.tileGridForProjection[projKey])\n );\n }\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.getTileCacheForProjection = function getTileCacheForProjection (projection) {\n if (!ENABLE_RASTER_REPROJECTION) {\n return UrlTile.prototype.getTileCacheForProjection.call(this, projection);\n }\n var thisProj = this.getProjection(); if (!thisProj || equivalent(thisProj, projection)) {\n return this.tileCache;\n } else {\n var projKey = getUid(projection);\n if (!(projKey in this.tileCacheForProjection)) {\n this.tileCacheForProjection[projKey] = new TileCache(this.tileCache.highWaterMark);\n }\n return this.tileCacheForProjection[projKey];\n }\n };\n\n /**\n * @param {number} z Tile coordinate z.\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"../proj/Projection.js\").default} projection Projection.\n * @param {string} key The key set on the tile.\n * @return {!import(\"../Tile.js\").default} Tile.\n * @private\n */\n TileImage.prototype.createTile_ = function createTile_ (z, x, y, pixelRatio, projection, key) {\n var tileCoord = [z, x, y];\n var urlTileCoord = this.getTileCoordForTileUrlFunction(\n tileCoord, projection);\n var tileUrl = urlTileCoord ?\n this.tileUrlFunction(urlTileCoord, pixelRatio, projection) : undefined;\n var tile = new this.tileClass(\n tileCoord,\n tileUrl !== undefined ? TileState.IDLE : TileState.EMPTY,\n tileUrl !== undefined ? tileUrl : '',\n this.crossOrigin,\n this.tileLoadFunction,\n this.tileOptions);\n tile.key = key;\n listen(tile, EventType.CHANGE,\n this.handleTileChange, this);\n return tile;\n };\n\n /**\n * @inheritDoc\n */\n TileImage.prototype.getTile = function getTile (z, x, y, pixelRatio, projection) {\n var sourceProjection = /** @type {!import(\"../proj/Projection.js\").default} */ (this.getProjection());\n if (!ENABLE_RASTER_REPROJECTION ||\n !sourceProjection || !projection || equivalent(sourceProjection, projection)) {\n return this.getTileInternal(z, x, y, pixelRatio, sourceProjection || projection);\n } else {\n var cache = this.getTileCacheForProjection(projection);\n var tileCoord = [z, x, y];\n var tile;\n var tileCoordKey = getKey(tileCoord);\n if (cache.containsKey(tileCoordKey)) {\n tile = /** @type {!import(\"../Tile.js\").default} */ (cache.get(tileCoordKey));\n }\n var key = this.getKey();\n if (tile && tile.key == key) {\n return tile;\n } else {\n var sourceTileGrid = this.getTileGridForProjection(sourceProjection);\n var targetTileGrid = this.getTileGridForProjection(projection);\n var wrappedTileCoord =\n this.getTileCoordForTileUrlFunction(tileCoord, projection);\n var newTile = new ReprojTile(\n sourceProjection, sourceTileGrid,\n projection, targetTileGrid,\n tileCoord, wrappedTileCoord, this.getTilePixelRatio(pixelRatio),\n this.getGutter(),\n function(z, x, y, pixelRatio) {\n return this.getTileInternal(z, x, y, pixelRatio, sourceProjection);\n }.bind(this), this.reprojectionErrorThreshold_,\n this.renderReprojectionEdges_);\n newTile.key = key;\n\n if (tile) {\n newTile.interimTile = tile;\n newTile.refreshInterimChain();\n cache.replace(tileCoordKey, newTile);\n } else {\n cache.set(tileCoordKey, newTile);\n }\n return newTile;\n }\n }\n };\n\n /**\n * @param {number} z Tile coordinate z.\n * @param {number} x Tile coordinate x.\n * @param {number} y Tile coordinate y.\n * @param {number} pixelRatio Pixel ratio.\n * @param {!import(\"../proj/Projection.js\").default} projection Projection.\n * @return {!import(\"../Tile.js\").default} Tile.\n * @protected\n */\n TileImage.prototype.getTileInternal = function getTileInternal (z, x, y, pixelRatio, projection) {\n var tile = null;\n var tileCoordKey = getKeyZXY(z, x, y);\n var key = this.getKey();\n if (!this.tileCache.containsKey(tileCoordKey)) {\n tile = this.createTile_(z, x, y, pixelRatio, projection, key);\n this.tileCache.set(tileCoordKey, tile);\n } else {\n tile = this.tileCache.get(tileCoordKey);\n if (tile.key != key) {\n // The source's params changed. If the tile has an interim tile and if we\n // can use it then we use it. Otherwise we create a new tile. In both\n // cases we attempt to assign an interim tile to the new tile.\n var interimTile = tile;\n tile = this.createTile_(z, x, y, pixelRatio, projection, key);\n\n //make the new tile the head of the list,\n if (interimTile.getState() == TileState.IDLE) {\n //the old tile hasn't begun loading yet, and is now outdated, so we can simply discard it\n tile.interimTile = interimTile.interimTile;\n } else {\n tile.interimTile = interimTile;\n }\n tile.refreshInterimChain();\n this.tileCache.replace(tileCoordKey, tile);\n }\n }\n return tile;\n };\n\n /**\n * Sets whether to render reprojection edges or not (usually for debugging).\n * @param {boolean} render Render the edges.\n * @api\n */\n TileImage.prototype.setRenderReprojectionEdges = function setRenderReprojectionEdges (render) {\n if (!ENABLE_RASTER_REPROJECTION ||\n this.renderReprojectionEdges_ == render) {\n return;\n }\n this.renderReprojectionEdges_ = render;\n for (var id in this.tileCacheForProjection) {\n this.tileCacheForProjection[id].clear();\n }\n this.changed();\n };\n\n /**\n * Sets the tile grid to use when reprojecting the tiles to the given\n * projection instead of the default tile grid for the projection.\n *\n * This can be useful when the default tile grid cannot be created\n * (e.g. projection has no extent defined) or\n * for optimization reasons (custom tile size, resolutions, ...).\n *\n * @param {import(\"../proj.js\").ProjectionLike} projection Projection.\n * @param {import(\"../tilegrid/TileGrid.js\").default} tilegrid Tile grid to use for the projection.\n * @api\n */\n TileImage.prototype.setTileGridForProjection = function setTileGridForProjection (projection, tilegrid) {\n if (ENABLE_RASTER_REPROJECTION) {\n var proj = getProjection(projection);\n if (proj) {\n var projKey = getUid(proj);\n if (!(projKey in this.tileGridForProjection)) {\n this.tileGridForProjection[projKey] = tilegrid;\n }\n }\n }\n };\n\n return TileImage;\n}(UrlTile));\n\n\n/**\n * @param {ImageTile} imageTile Image tile.\n * @param {string} src Source.\n */\nfunction defaultTileLoadFunction(imageTile, src) {\n /** @type {HTMLImageElement|HTMLVideoElement} */ (imageTile.getImage()).src = src;\n}\n\nexport default TileImage;\n\n//# sourceMappingURL=TileImage.js.map","/**\n * @module ol/source/XYZ\n */\n\nimport TileImage from './TileImage.js';\nimport {createXYZ, extentFromProjection} from '../tilegrid.js';\n\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize=2048] Cache size.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images. Note that\n * you must provide a `crossOrigin` value if you are using the WebGL renderer or if you want to\n * access pixel data with the Canvas renderer. See\n * https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {import(\"../proj.js\").ProjectionLike} [projection='EPSG:3857'] Projection.\n * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {number} [maxZoom=18] Optional max zoom level.\n * @property {number} [minZoom=0] Optional min zoom level.\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid] Tile grid.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n * imageTile.getImage().src = src;\n * };\n * ```\n * @property {number} [tilePixelRatio=1] The pixel ratio used by the tile service.\n * For example, if the tile service advertizes 256px by 256px tiles but actually sends 512px\n * by 512px images (for retina/hidpi devices) then `tilePixelRatio`\n * should be set to `2`.\n * @property {number|import(\"../size.js\").Size} [tileSize=[256, 256]] The tile size used by the tile service.\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction] Optional function to get\n * tile URL given a tile coordinate and the projection.\n * Required if url or urls are not provided.\n * @property {string} [url] URL template. Must include `{x}`, `{y}` or `{-y}`,\n * and `{z}` placeholders. A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`,\n * may be used instead of defining each one separately in the `urls` option.\n * @property {Array<string>} [urls] An array of URL templates.\n * @property {boolean} [wrapX=true] Whether to wrap the world horizontally.\n * @property {number} [transition] Duration of the opacity transition for rendering.\n * To disable the opacity transition, pass `transition: 0`.\n */\n\n\n/**\n * @classdesc\n * Layer source for tile data with URLs in a set XYZ format that are\n * defined in a URL template. By default, this follows the widely-used\n * Google grid where `x` 0 and `y` 0 are in the top left. Grids like\n * TMS where `x` 0 and `y` 0 are in the bottom left can be used by\n * using the `{-y}` placeholder in the URL template, so long as the\n * source does not have a custom tile grid. In this case,\n * {@link module:ol/source/TileImage} can be used with a `tileUrlFunction`\n * such as:\n *\n * tileUrlFunction: function(coordinate) {\n * return 'http://mapserver.com/' + coordinate[0] + '/' +\n * coordinate[1] + '/' + coordinate[2] + '.png';\n * }\n *\n * @api\n */\nvar XYZ = /*@__PURE__*/(function (TileImage) {\n function XYZ(opt_options) {\n var options = opt_options || {};\n var projection = options.projection !== undefined ?\n options.projection : 'EPSG:3857';\n\n var tileGrid = options.tileGrid !== undefined ? options.tileGrid :\n createXYZ({\n extent: extentFromProjection(projection),\n maxZoom: options.maxZoom,\n minZoom: options.minZoom,\n tileSize: options.tileSize\n });\n\n TileImage.call(this, {\n attributions: options.attributions,\n cacheSize: options.cacheSize,\n crossOrigin: options.crossOrigin,\n opaque: options.opaque,\n projection: projection,\n reprojectionErrorThreshold: options.reprojectionErrorThreshold,\n tileGrid: tileGrid,\n tileLoadFunction: options.tileLoadFunction,\n tilePixelRatio: options.tilePixelRatio,\n tileUrlFunction: options.tileUrlFunction,\n url: options.url,\n urls: options.urls,\n wrapX: options.wrapX !== undefined ? options.wrapX : true,\n transition: options.transition,\n attributionsCollapsible: options.attributionsCollapsible\n });\n\n }\n\n if ( TileImage ) XYZ.__proto__ = TileImage;\n XYZ.prototype = Object.create( TileImage && TileImage.prototype );\n XYZ.prototype.constructor = XYZ;\n\n return XYZ;\n}(TileImage));\n\nexport default XYZ;\n\n//# sourceMappingURL=XYZ.js.map","/**\n * @module ol/source/OSM\n */\n\nimport XYZ from './XYZ.js';\n\n\n/**\n * The attribution containing a link to the OpenStreetMap Copyright and License\n * page.\n * @const\n * @type {string}\n * @api\n */\nexport var ATTRIBUTION = '© ' +\n '<a href=\"https://www.openstreetmap.org/copyright\">OpenStreetMap</a> ' +\n 'contributors.';\n\n\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {number} [cacheSize=2048] Cache size.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images. Note that\n * you must provide a `crossOrigin` value if you are using the WebGL renderer or if you want to\n * access pixel data with the Canvas renderer. See\n * https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {number} [maxZoom=19] Max zoom.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {number} [reprojectionErrorThreshold=1.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n * imageTile.getImage().src = src;\n * };\n * ```\n * @property {string} [url='https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png'] URL template.\n * Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.\n * @property {boolean} [wrapX=true] Whether to wrap the world horizontally.\n */\n\n\n/**\n * @classdesc\n * Layer source for the OpenStreetMap tile server.\n * @api\n */\nvar OSM = /*@__PURE__*/(function (XYZ) {\n function OSM(opt_options) {\n\n var options = opt_options || {};\n\n var attributions;\n if (options.attributions !== undefined) {\n attributions = options.attributions;\n } else {\n attributions = [ATTRIBUTION];\n }\n\n var crossOrigin = options.crossOrigin !== undefined ?\n options.crossOrigin : 'anonymous';\n\n var url = options.url !== undefined ?\n options.url : 'https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png';\n\n XYZ.call(this, {\n attributions: attributions,\n cacheSize: options.cacheSize,\n crossOrigin: crossOrigin,\n opaque: options.opaque !== undefined ? options.opaque : true,\n maxZoom: options.maxZoom !== undefined ? options.maxZoom : 19,\n reprojectionErrorThreshold: options.reprojectionErrorThreshold,\n tileLoadFunction: options.tileLoadFunction,\n url: url,\n wrapX: options.wrapX,\n attributionsCollapsible: false\n });\n\n }\n\n if ( XYZ ) OSM.__proto__ = XYZ;\n OSM.prototype = Object.create( XYZ && XYZ.prototype );\n OSM.prototype.constructor = OSM;\n\n return OSM;\n}(XYZ));\n\nexport default OSM;\n\n//# sourceMappingURL=OSM.js.map","import {Map, View} from 'ol';\nimport TileLayer from 'ol/layer/Tile';\nimport OSM from 'ol/source/OSM.js'\n\nnew Map({\n target: 'map',\n layers: [\n new TileLayer({\n source: OSM()\n })\n ],\n view: new View({\n center: [0, 0],\n zoom: 2\n })\n});\n"],"sourceRoot":""} |