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{"version":3,"file":"leaflet.markercluster-src.js","sources":["../src/MarkerClusterGroup.js","../src/MarkerCluster.js","../src/MarkerOpacity.js","../src/DistanceGrid.js","../src/MarkerCluster.QuickHull.js","../src/MarkerCluster.Spiderfier.js","../src/MarkerClusterGroup.Refresh.js"],"sourcesContent":["/*\r\n * L.MarkerClusterGroup extends L.FeatureGroup by clustering the markers contained within\r\n */\r\n\r\nexport var MarkerClusterGroup = L.MarkerClusterGroup = L.FeatureGroup.extend({\r\n\r\n\toptions: {\r\n\t\tmaxClusterRadius: 80, //A cluster will cover at most this many pixels from its center\r\n\t\ticonCreateFunction: null,\r\n\t\tclusterPane: L.Marker.prototype.options.pane,\r\n\r\n\t\tspiderfyOnMaxZoom: true,\r\n\t\tshowCoverageOnHover: true,\r\n\t\tzoomToBoundsOnClick: true,\r\n\t\tsingleMarkerMode: false,\r\n\r\n\t\tdisableClusteringAtZoom: null,\r\n\r\n\t\t// Setting this to false prevents the removal of any clusters outside of the viewpoint, which\r\n\t\t// is the default behaviour for performance reasons.\r\n\t\tremoveOutsideVisibleBounds: true,\r\n\r\n\t\t// Set to false to disable all animations (zoom and spiderfy).\r\n\t\t// If false, option animateAddingMarkers below has no effect.\r\n\t\t// If L.DomUtil.TRANSITION is falsy, this option has no effect.\r\n\t\tanimate: true,\r\n\r\n\t\t//Whether to animate adding markers after adding the MarkerClusterGroup to the map\r\n\t\t// If you are adding individual markers set to true, if adding bulk markers leave false for massive performance gains.\r\n\t\tanimateAddingMarkers: false,\r\n\r\n\t\t//Increase to increase the distance away that spiderfied markers appear from the center\r\n\t\tspiderfyDistanceMultiplier: 1,\r\n\r\n\t\t// Make it possible to specify a polyline options on a spider leg\r\n\t\tspiderLegPolylineOptions: { weight: 1.5, color: '#222', opacity: 0.5 },\r\n\r\n\t\t// When bulk adding layers, adds markers in chunks. Means addLayers may not add all the layers in the call, others will be loaded during setTimeouts\r\n\t\tchunkedLoading: false,\r\n\t\tchunkInterval: 200, // process markers for a maximum of ~ n milliseconds (then trigger the chunkProgress callback)\r\n\t\tchunkDelay: 50, // at the end of each interval, give n milliseconds back to system/browser\r\n\t\tchunkProgress: null, // progress callback: function(processed, total, elapsed) (e.g. for a progress indicator)\r\n\r\n\t\t//Options to pass to the L.Polygon constructor\r\n\t\tpolygonOptions: {}\r\n\t},\r\n\r\n\tinitialize: function (options) {\r\n\t\tL.Util.setOptions(this, options);\r\n\t\tif (!this.options.iconCreateFunction) {\r\n\t\t\tthis.options.iconCreateFunction = this._defaultIconCreateFunction;\r\n\t\t}\r\n\r\n\t\tthis._featureGroup = L.featureGroup();\r\n\t\tthis._featureGroup.addEventParent(this);\r\n\r\n\t\tthis._nonPointGroup = L.featureGroup();\r\n\t\tthis._nonPointGroup.addEventParent(this);\r\n\r\n\t\tthis._inZoomAnimation = 0;\r\n\t\tthis._needsClustering = [];\r\n\t\tthis._needsRemoving = []; //Markers removed while we aren't on the map need to be kept track of\r\n\t\t//The bounds of the currently shown area (from _getExpandedVisibleBounds) Updated on zoom/move\r\n\t\tthis._currentShownBounds = null;\r\n\r\n\t\tthis._queue = [];\r\n\r\n\t\tthis._childMarkerEventHandlers = {\r\n\t\t\t'dragstart': this._childMarkerDragStart,\r\n\t\t\t'move': this._childMarkerMoved,\r\n\t\t\t'dragend': this._childMarkerDragEnd,\r\n\t\t};\r\n\r\n\t\t// Hook the appropriate animation methods.\r\n\t\tvar animate = L.DomUtil.TRANSITION && this.options.animate;\r\n\t\tL.extend(this, animate ? this._withAnimation : this._noAnimation);\r\n\t\t// Remember which MarkerCluster class to instantiate (animated or not).\r\n\t\tthis._markerCluster = animate ? L.MarkerCluster : L.MarkerClusterNonAnimated;\r\n\t},\r\n\r\n\taddLayer: function (layer) {\r\n\r\n\t\tif (layer instanceof L.LayerGroup) {\r\n\t\t\treturn this.addLayers([layer]);\r\n\t\t}\r\n\r\n\t\t//Don't cluster non point data\r\n\t\tif (!layer.getLatLng) {\r\n\t\t\tthis._nonPointGroup.addLayer(layer);\r\n\t\t\tthis.fire('layeradd', { layer: l
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