|
@@ -0,0 +1,1769 @@
|
|
|
+/*
|
|
|
+ Copyright (c) 2012, Smartrak, David Leaver
|
|
|
+ Leaflet.markercluster is an open-source JavaScript library for Marker Clustering on leaflet powered maps.
|
|
|
+ https://github.com/danzel/Leaflet.markercluster
|
|
|
+*/
|
|
|
+(function (window, undefined) {
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * L.MarkerClusterGroup extends L.FeatureGroup by clustering the markers contained within
|
|
|
+ */
|
|
|
+
|
|
|
+L.MarkerClusterGroup = L.FeatureGroup.extend({
|
|
|
+
|
|
|
+ options: {
|
|
|
+ maxClusterRadius: 80, //A cluster will cover at most this many pixels from its center
|
|
|
+ iconCreateFunction: null,
|
|
|
+
|
|
|
+ spiderfyOnMaxZoom: true,
|
|
|
+ showCoverageOnHover: true,
|
|
|
+ zoomToBoundsOnClick: true,
|
|
|
+ singleMarkerMode: false,
|
|
|
+
|
|
|
+ disableClusteringAtZoom: null,
|
|
|
+
|
|
|
+ //Whether to animate adding markers after adding the MarkerClusterGroup to the map
|
|
|
+ // If you are adding individual markers set to true, if adding bulk markers leave false for massive performance gains.
|
|
|
+ animateAddingMarkers: false,
|
|
|
+
|
|
|
+ //Options to pass to the L.Polygon constructor
|
|
|
+ polygonOptions: {}
|
|
|
+ },
|
|
|
+
|
|
|
+ initialize: function (options) {
|
|
|
+ L.Util.setOptions(this, options);
|
|
|
+ if (!this.options.iconCreateFunction) {
|
|
|
+ this.options.iconCreateFunction = this._defaultIconCreateFunction;
|
|
|
+ }
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.initialize.call(this, []);
|
|
|
+
|
|
|
+ this._inZoomAnimation = 0;
|
|
|
+ this._needsClustering = [];
|
|
|
+ //The bounds of the currently shown area (from _getExpandedVisibleBounds) Updated on zoom/move
|
|
|
+ this._currentShownBounds = null;
|
|
|
+ },
|
|
|
+
|
|
|
+ addLayer: function (layer) {
|
|
|
+
|
|
|
+ if (layer instanceof L.LayerGroup) {
|
|
|
+ var array = [];
|
|
|
+ for (var i in layer._layers) {
|
|
|
+ if (layer._layers.hasOwnProperty(i)) {
|
|
|
+ array.push(layer._layers[i]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return this.addLayers(array);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this.options.singleMarkerMode) {
|
|
|
+ layer.options.icon = this.options.iconCreateFunction({
|
|
|
+ getChildCount: function () {
|
|
|
+ return 1;
|
|
|
+ },
|
|
|
+ getAllChildMarkers: function () {
|
|
|
+ return [layer];
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!this._map) {
|
|
|
+ this._needsClustering.push(layer);
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this.hasLayer(layer)) {
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ //If we have already clustered we'll need to add this one to a cluster
|
|
|
+
|
|
|
+ if (this._unspiderfy) {
|
|
|
+ this._unspiderfy();
|
|
|
+ }
|
|
|
+
|
|
|
+ this._addLayer(layer, this._maxZoom);
|
|
|
+
|
|
|
+ //Work out what is visible
|
|
|
+ var visibleLayer = layer,
|
|
|
+ currentZoom = this._map.getZoom();
|
|
|
+ if (layer.__parent) {
|
|
|
+ while (visibleLayer.__parent._zoom >= currentZoom) {
|
|
|
+ visibleLayer = visibleLayer.__parent;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this._currentShownBounds.contains(visibleLayer.getLatLng())) {
|
|
|
+ if (this.options.animateAddingMarkers) {
|
|
|
+ this._animationAddLayer(layer, visibleLayer);
|
|
|
+ } else {
|
|
|
+ this._animationAddLayerNonAnimated(layer, visibleLayer);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return this;
|
|
|
+ },
|
|
|
+
|
|
|
+ removeLayer: function (layer) {
|
|
|
+
|
|
|
+ if (!this._map) {
|
|
|
+ this._arraySplice(this._needsClustering, layer);
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!layer.__parent) {
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this._unspiderfy) {
|
|
|
+ this._unspiderfy();
|
|
|
+ this._unspiderfyLayer(layer);
|
|
|
+ }
|
|
|
+
|
|
|
+ //Remove the marker from clusters
|
|
|
+ this._removeLayer(layer, true);
|
|
|
+
|
|
|
+ if (layer._icon) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, layer);
|
|
|
+ layer.setOpacity(1);
|
|
|
+ }
|
|
|
+ return this;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Takes an array of markers and adds them in bulk
|
|
|
+ addLayers: function (layersArray) {
|
|
|
+ if (!this._map) {
|
|
|
+ this._needsClustering = this._needsClustering.concat(layersArray);
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (var i = 0, l = layersArray.length; i < l; i++) {
|
|
|
+ var m = layersArray[i];
|
|
|
+ this._addLayer(m, this._maxZoom);
|
|
|
+
|
|
|
+ //If we just made a cluster of size 2 then we need to remove the other marker from the map (if it is) or we never will
|
|
|
+ if (m.__parent) {
|
|
|
+ if (m.__parent.getChildCount() === 2) {
|
|
|
+ var markers = m.__parent.getAllChildMarkers(),
|
|
|
+ otherMarker = markers[0] === m ? markers[1] : markers[0];
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, otherMarker);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, this._currentShownBounds);
|
|
|
+
|
|
|
+ return this;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Takes an array of markers and removes them in bulk
|
|
|
+ removeLayers: function (layersArray) {
|
|
|
+ var i, l, m;
|
|
|
+
|
|
|
+ if (!this._map) {
|
|
|
+ for (i = 0, l = layersArray.length; i < l; i++) {
|
|
|
+ this._arraySplice(this._needsClustering, layersArray[i]);
|
|
|
+ }
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0, l = layersArray.length; i < l; i++) {
|
|
|
+ m = layersArray[i];
|
|
|
+ this._removeLayer(m, true, true);
|
|
|
+
|
|
|
+ if (m._icon) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, m);
|
|
|
+ m.setOpacity(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //Fix up the clusters and markers on the map
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, this._currentShownBounds);
|
|
|
+
|
|
|
+ for (i in this._layers) {
|
|
|
+ if (this._layers.hasOwnProperty(i)) {
|
|
|
+ m = this._layers[i];
|
|
|
+ if (m instanceof L.MarkerCluster) {
|
|
|
+ m._updateIcon();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return this;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Removes all layers from the MarkerClusterGroup
|
|
|
+ clearLayers: function () {
|
|
|
+ //Need our own special implementation as the LayerGroup one doesn't work for us
|
|
|
+
|
|
|
+ //If we aren't on the map yet, just blow away the markers we know of
|
|
|
+ if (!this._map) {
|
|
|
+ this._needsClustering = [];
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this._unspiderfy) {
|
|
|
+ this._unspiderfy();
|
|
|
+ }
|
|
|
+
|
|
|
+ //Remove all the visible layers
|
|
|
+ for (var i in this._layers) {
|
|
|
+ if (this._layers.hasOwnProperty(i)) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, this._layers[i]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //Reset _topClusterLevel and the DistanceGrids
|
|
|
+ this._generateInitialClusters();
|
|
|
+
|
|
|
+ return this;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Returns true if the given layer is in this MarkerClusterGroup
|
|
|
+ hasLayer: function (layer) {
|
|
|
+ if (this._needsClustering.length > 0) {
|
|
|
+ var anArray = this._needsClustering;
|
|
|
+ for (var i = anArray.length - 1; i >= 0; i--) {
|
|
|
+ if (anArray[i] === layer) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return !!(layer.__parent && layer.__parent._group === this);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Zoom down to show the given layer (spiderfying if necessary) then calls the callback
|
|
|
+ zoomToShowLayer: function (layer, callback) {
|
|
|
+
|
|
|
+ var showMarker = function () {
|
|
|
+ if ((layer._icon || layer.__parent._icon) && !this._inZoomAnimation) {
|
|
|
+ this._map.off('moveend', showMarker, this);
|
|
|
+ this.off('animationend', showMarker, this);
|
|
|
+
|
|
|
+ if (layer._icon) {
|
|
|
+ callback();
|
|
|
+ } else if (layer.__parent._icon) {
|
|
|
+ var afterSpiderfy = function () {
|
|
|
+ this.off('spiderfied', afterSpiderfy, this);
|
|
|
+ callback();
|
|
|
+ };
|
|
|
+
|
|
|
+ this.on('spiderfied', afterSpiderfy, this);
|
|
|
+ layer.__parent.spiderfy();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ if (layer._icon) {
|
|
|
+ callback();
|
|
|
+ } else if (layer.__parent._zoom < this._map.getZoom()) {
|
|
|
+ //Layer should be visible now but isn't on screen, just pan over to it
|
|
|
+ this._map.on('moveend', showMarker, this);
|
|
|
+ if (!layer._icon) {
|
|
|
+ this._map.panTo(layer.getLatLng());
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ this._map.on('moveend', showMarker, this);
|
|
|
+ this.on('animationend', showMarker, this);
|
|
|
+ this._map.setView(layer.getLatLng(), layer.__parent._zoom + 1);
|
|
|
+ layer.__parent.zoomToBounds();
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Overrides FeatureGroup.onAdd
|
|
|
+ onAdd: function (map) {
|
|
|
+ L.FeatureGroup.prototype.onAdd.call(this, map);
|
|
|
+
|
|
|
+ if (!this._gridClusters) {
|
|
|
+ this._generateInitialClusters();
|
|
|
+ }
|
|
|
+
|
|
|
+ for (var i = 0, l = this._needsClustering.length; i < l; i++) {
|
|
|
+ this._addLayer(this._needsClustering[i], this._maxZoom);
|
|
|
+ }
|
|
|
+ this._needsClustering = [];
|
|
|
+
|
|
|
+ this._map.on('zoomend', this._zoomEnd, this);
|
|
|
+ this._map.on('moveend', this._moveEnd, this);
|
|
|
+
|
|
|
+ if (this._spiderfierOnAdd) { //TODO FIXME: Not sure how to have spiderfier add something on here nicely
|
|
|
+ this._spiderfierOnAdd();
|
|
|
+ }
|
|
|
+
|
|
|
+ this._bindEvents();
|
|
|
+
|
|
|
+
|
|
|
+ //Actually add our markers to the map:
|
|
|
+
|
|
|
+ //Remember the current zoom level and bounds
|
|
|
+ this._zoom = this._map.getZoom();
|
|
|
+ this._currentShownBounds = this._getExpandedVisibleBounds();
|
|
|
+
|
|
|
+ //Make things appear on the map
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, this._currentShownBounds);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Overrides FeatureGroup.onRemove
|
|
|
+ onRemove: function (map) {
|
|
|
+ this._map.off('zoomend', this._zoomEnd, this);
|
|
|
+ this._map.off('moveend', this._moveEnd, this);
|
|
|
+
|
|
|
+ //In case we are in a cluster animation
|
|
|
+ this._map._mapPane.className = this._map._mapPane.className.replace(' leaflet-cluster-anim', '');
|
|
|
+
|
|
|
+ if (this._spiderfierOnRemove) { //TODO FIXME: Not sure how to have spiderfier add something on here nicely
|
|
|
+ this._spiderfierOnRemove();
|
|
|
+ }
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.onRemove.call(this, map);
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ //Remove the given object from the given array
|
|
|
+ _arraySplice: function (anArray, obj) {
|
|
|
+ for (var i = anArray.length - 1; i >= 0; i--) {
|
|
|
+ if (anArray[i] === obj) {
|
|
|
+ anArray.splice(i, 1);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Internal function for removing a marker from everything.
|
|
|
+ //dontUpdateMap: set to true if you will handle updating the map manually (for bulk functions)
|
|
|
+ _removeLayer: function (marker, removeFromDistanceGrid, dontUpdateMap) {
|
|
|
+ var gridClusters = this._gridClusters,
|
|
|
+ gridUnclustered = this._gridUnclustered,
|
|
|
+ map = this._map;
|
|
|
+
|
|
|
+ //Remove the marker from distance clusters it might be in
|
|
|
+ if (removeFromDistanceGrid) {
|
|
|
+ for (var z = this._maxZoom; z >= 0; z--) {
|
|
|
+ if (!gridUnclustered[z].removeObject(marker, map.project(marker.getLatLng(), z))) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //Work our way up the clusters removing them as we go if required
|
|
|
+ var cluster = marker.__parent,
|
|
|
+ markers = cluster._markers,
|
|
|
+ otherMarker;
|
|
|
+
|
|
|
+ //Remove the marker from the immediate parents marker list
|
|
|
+ this._arraySplice(markers, marker);
|
|
|
+
|
|
|
+ while (cluster) {
|
|
|
+ cluster._childCount--;
|
|
|
+
|
|
|
+ if (cluster._zoom < 0) {
|
|
|
+ //Top level, do nothing
|
|
|
+ break;
|
|
|
+ } else if (removeFromDistanceGrid && cluster._childCount <= 1) { //Cluster no longer required
|
|
|
+ //We need to push the other marker up to the parent
|
|
|
+ otherMarker = cluster._markers[0] === marker ? cluster._markers[1] : cluster._markers[0];
|
|
|
+
|
|
|
+ //Update distance grid
|
|
|
+ gridClusters[cluster._zoom].removeObject(cluster, map.project(cluster._cLatLng, cluster._zoom));
|
|
|
+ gridUnclustered[cluster._zoom].addObject(otherMarker, map.project(otherMarker.getLatLng(), cluster._zoom));
|
|
|
+
|
|
|
+ //Move otherMarker up to parent
|
|
|
+ this._arraySplice(cluster.__parent._childClusters, cluster);
|
|
|
+ cluster.__parent._markers.push(otherMarker);
|
|
|
+ otherMarker.__parent = cluster.__parent;
|
|
|
+
|
|
|
+ if (cluster._icon) {
|
|
|
+ //Cluster is currently on the map, need to put the marker on the map instead
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, cluster);
|
|
|
+ if (!dontUpdateMap) {
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(this, otherMarker);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ cluster._recalculateBounds();
|
|
|
+ if (!dontUpdateMap || !cluster._icon) {
|
|
|
+ cluster._updateIcon();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ cluster = cluster.__parent;
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Overrides FeatureGroup._propagateEvent
|
|
|
+ _propagateEvent: function (e) {
|
|
|
+ if (e.target instanceof L.MarkerCluster) {
|
|
|
+ e.type = 'cluster' + e.type;
|
|
|
+ }
|
|
|
+ L.FeatureGroup.prototype._propagateEvent.call(this, e);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Default functionality
|
|
|
+ _defaultIconCreateFunction: function (cluster) {
|
|
|
+ var childCount = cluster.getChildCount();
|
|
|
+
|
|
|
+ var c = ' marker-cluster-';
|
|
|
+ if (childCount < 10) {
|
|
|
+ c += 'small';
|
|
|
+ } else if (childCount < 100) {
|
|
|
+ c += 'medium';
|
|
|
+ } else {
|
|
|
+ c += 'large';
|
|
|
+ }
|
|
|
+
|
|
|
+ return new L.DivIcon({ html: '<div><span>' + childCount + '</span></div>', className: 'marker-cluster' + c, iconSize: new L.Point(40, 40) });
|
|
|
+ },
|
|
|
+
|
|
|
+ _bindEvents: function () {
|
|
|
+ var shownPolygon = null,
|
|
|
+ map = this._map,
|
|
|
+
|
|
|
+ spiderfyOnMaxZoom = this.options.spiderfyOnMaxZoom,
|
|
|
+ showCoverageOnHover = this.options.showCoverageOnHover,
|
|
|
+ zoomToBoundsOnClick = this.options.zoomToBoundsOnClick;
|
|
|
+
|
|
|
+ //Zoom on cluster click or spiderfy if we are at the lowest level
|
|
|
+ if (spiderfyOnMaxZoom || zoomToBoundsOnClick) {
|
|
|
+ this.on('clusterclick', function (a) {
|
|
|
+ if (map.getMaxZoom() === map.getZoom()) {
|
|
|
+ if (spiderfyOnMaxZoom) {
|
|
|
+ a.layer.spiderfy();
|
|
|
+ }
|
|
|
+ } else if (zoomToBoundsOnClick) {
|
|
|
+ a.layer.zoomToBounds();
|
|
|
+ }
|
|
|
+ }, this);
|
|
|
+ }
|
|
|
+
|
|
|
+ //Show convex hull (boundary) polygon on mouse over
|
|
|
+ if (showCoverageOnHover) {
|
|
|
+ this.on('clustermouseover', function (a) {
|
|
|
+ if (this._inZoomAnimation) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if (shownPolygon) {
|
|
|
+ map.removeLayer(shownPolygon);
|
|
|
+ }
|
|
|
+ if (a.layer.getChildCount() > 2) {
|
|
|
+ shownPolygon = new L.Polygon(a.layer.getConvexHull(), this.options.polygonOptions);
|
|
|
+ map.addLayer(shownPolygon);
|
|
|
+ }
|
|
|
+ }, this);
|
|
|
+ this.on('clustermouseout', function () {
|
|
|
+ if (shownPolygon) {
|
|
|
+ map.removeLayer(shownPolygon);
|
|
|
+ shownPolygon = null;
|
|
|
+ }
|
|
|
+ }, this);
|
|
|
+ map.on('zoomend', function () {
|
|
|
+ if (shownPolygon) {
|
|
|
+ map.removeLayer(shownPolygon);
|
|
|
+ shownPolygon = null;
|
|
|
+ }
|
|
|
+ }, this);
|
|
|
+ map.on('layerremove', function (opt) {
|
|
|
+ if (shownPolygon && opt.layer === this) {
|
|
|
+ map.removeLayer(shownPolygon);
|
|
|
+ shownPolygon = null;
|
|
|
+ }
|
|
|
+ }, this);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _zoomEnd: function () {
|
|
|
+ if (!this._map) { //May have been removed from the map by a zoomEnd handler
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ this._mergeSplitClusters();
|
|
|
+
|
|
|
+ this._zoom = this._map._zoom;
|
|
|
+ this._currentShownBounds = this._getExpandedVisibleBounds();
|
|
|
+ },
|
|
|
+
|
|
|
+ _moveEnd: function () {
|
|
|
+ if (this._inZoomAnimation) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var newBounds = this._getExpandedVisibleBounds();
|
|
|
+
|
|
|
+ this._topClusterLevel._recursivelyRemoveChildrenFromMap(this._currentShownBounds, this._zoom, newBounds);
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, newBounds);
|
|
|
+
|
|
|
+ this._currentShownBounds = newBounds;
|
|
|
+ return;
|
|
|
+ },
|
|
|
+
|
|
|
+ _generateInitialClusters: function () {
|
|
|
+ var maxZoom = this._map.getMaxZoom(),
|
|
|
+ radius = this.options.maxClusterRadius;
|
|
|
+
|
|
|
+ if (this.options.disableClusteringAtZoom) {
|
|
|
+ maxZoom = this.options.disableClusteringAtZoom - 1;
|
|
|
+ }
|
|
|
+ this._maxZoom = maxZoom;
|
|
|
+ this._gridClusters = {};
|
|
|
+ this._gridUnclustered = {};
|
|
|
+
|
|
|
+ //Set up DistanceGrids for each zoom
|
|
|
+ for (var zoom = maxZoom; zoom >= 0; zoom--) {
|
|
|
+ this._gridClusters[zoom] = new L.DistanceGrid(radius);
|
|
|
+ this._gridUnclustered[zoom] = new L.DistanceGrid(radius);
|
|
|
+ }
|
|
|
+
|
|
|
+ this._topClusterLevel = new L.MarkerCluster(this, -1);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Zoom: Zoom to start adding at (Pass this._maxZoom to start at the bottom)
|
|
|
+ _addLayer: function (layer, zoom) {
|
|
|
+ var gridClusters = this._gridClusters,
|
|
|
+ gridUnclustered = this._gridUnclustered,
|
|
|
+ markerPoint, z;
|
|
|
+
|
|
|
+ //Find the lowest zoom level to slot this one in
|
|
|
+ for (; zoom >= 0; zoom--) {
|
|
|
+ markerPoint = this._map.project(layer.getLatLng(), zoom); // calculate pixel position
|
|
|
+
|
|
|
+ //Try find a cluster close by
|
|
|
+ var closest = gridClusters[zoom].getNearObject(markerPoint);
|
|
|
+ if (closest) {
|
|
|
+ closest._addChild(layer);
|
|
|
+ layer.__parent = closest;
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ //Try find a marker close by to form a new cluster with
|
|
|
+ closest = gridUnclustered[zoom].getNearObject(markerPoint);
|
|
|
+ if (closest) {
|
|
|
+ if (closest.__parent) {
|
|
|
+ this._removeLayer(closest, false);
|
|
|
+ }
|
|
|
+ var parent = closest.__parent;
|
|
|
+
|
|
|
+ //Create new cluster with these 2 in it
|
|
|
+
|
|
|
+ var newCluster = new L.MarkerCluster(this, zoom, closest, layer);
|
|
|
+ gridClusters[zoom].addObject(newCluster, this._map.project(newCluster._cLatLng, zoom));
|
|
|
+ closest.__parent = newCluster;
|
|
|
+ layer.__parent = newCluster;
|
|
|
+
|
|
|
+ //First create any new intermediate parent clusters that don't exist
|
|
|
+ var lastParent = newCluster;
|
|
|
+ for (z = zoom - 1; z > parent._zoom; z--) {
|
|
|
+ lastParent = new L.MarkerCluster(this, z, lastParent);
|
|
|
+ gridClusters[z].addObject(lastParent, this._map.project(closest.getLatLng(), z));
|
|
|
+ }
|
|
|
+ parent._addChild(lastParent);
|
|
|
+
|
|
|
+ //Remove closest from this zoom level and any above that it is in, replace with newCluster
|
|
|
+ for (z = zoom; z >= 0; z--) {
|
|
|
+ if (!gridUnclustered[z].removeObject(closest, this._map.project(closest.getLatLng(), z))) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ //Didn't manage to cluster in at this zoom, record us as a marker here and continue upwards
|
|
|
+ gridUnclustered[zoom].addObject(layer, markerPoint);
|
|
|
+ }
|
|
|
+
|
|
|
+ //Didn't get in anything, add us to the top
|
|
|
+ this._topClusterLevel._addChild(layer);
|
|
|
+ layer.__parent = this._topClusterLevel;
|
|
|
+ return;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Merge and split any existing clusters that are too big or small
|
|
|
+ _mergeSplitClusters: function () {
|
|
|
+ if (this._zoom < this._map._zoom) { //Zoom in, split
|
|
|
+ this._animationStart();
|
|
|
+ //Remove clusters now off screen
|
|
|
+ this._topClusterLevel._recursivelyRemoveChildrenFromMap(this._currentShownBounds, this._zoom, this._getExpandedVisibleBounds());
|
|
|
+
|
|
|
+ this._animationZoomIn(this._zoom, this._map._zoom);
|
|
|
+
|
|
|
+ } else if (this._zoom > this._map._zoom) { //Zoom out, merge
|
|
|
+ this._animationStart();
|
|
|
+
|
|
|
+ this._animationZoomOut(this._zoom, this._map._zoom);
|
|
|
+ } else {
|
|
|
+ this._moveEnd();
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Gets the maps visible bounds expanded in each direction by the size of the screen (so the user cannot see an area we do not cover in one pan)
|
|
|
+ _getExpandedVisibleBounds: function () {
|
|
|
+ var map = this._map,
|
|
|
+ bounds = map.getPixelBounds(),
|
|
|
+ width = L.Browser.mobile ? 0 : Math.abs(bounds.max.x - bounds.min.x),
|
|
|
+ height = L.Browser.mobile ? 0 : Math.abs(bounds.max.y - bounds.min.y),
|
|
|
+ sw = map.unproject(new L.Point(bounds.min.x - width, bounds.min.y - height)),
|
|
|
+ ne = map.unproject(new L.Point(bounds.max.x + width, bounds.max.y + height));
|
|
|
+
|
|
|
+ return new L.LatLngBounds(sw, ne);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Shared animation code
|
|
|
+ _animationAddLayerNonAnimated: function (layer, newCluster) {
|
|
|
+ if (newCluster === layer) {
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(this, layer);
|
|
|
+ } else if (newCluster._childCount === 2) {
|
|
|
+ newCluster._addToMap();
|
|
|
+
|
|
|
+ var markers = newCluster.getAllChildMarkers();
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, markers[0]);
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, markers[1]);
|
|
|
+ } else {
|
|
|
+ newCluster._updateIcon();
|
|
|
+ }
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+L.MarkerClusterGroup.include(!L.DomUtil.TRANSITION ? {
|
|
|
+
|
|
|
+ //Non Animated versions of everything
|
|
|
+ _animationStart: function () {
|
|
|
+ //Do nothing...
|
|
|
+ },
|
|
|
+ _animationZoomIn: function (previousZoomLevel, newZoomLevel) {
|
|
|
+ this._topClusterLevel._recursivelyRemoveChildrenFromMap(this._currentShownBounds, previousZoomLevel);
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, newZoomLevel, this._getExpandedVisibleBounds());
|
|
|
+ },
|
|
|
+ _animationZoomOut: function (previousZoomLevel, newZoomLevel) {
|
|
|
+ this._topClusterLevel._recursivelyRemoveChildrenFromMap(this._currentShownBounds, previousZoomLevel);
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, newZoomLevel, this._getExpandedVisibleBounds());
|
|
|
+ },
|
|
|
+ _animationAddLayer: function (layer, newCluster) {
|
|
|
+ this._animationAddLayerNonAnimated(layer, newCluster);
|
|
|
+ }
|
|
|
+} : {
|
|
|
+
|
|
|
+ //Animated versions here
|
|
|
+ _animationStart: function () {
|
|
|
+ this._map._mapPane.className += ' leaflet-cluster-anim';
|
|
|
+ this._inZoomAnimation++;
|
|
|
+ },
|
|
|
+ _animationEnd: function () {
|
|
|
+ if (this._map) {
|
|
|
+ this._map._mapPane.className = this._map._mapPane.className.replace(' leaflet-cluster-anim', '');
|
|
|
+ }
|
|
|
+ this._inZoomAnimation--;
|
|
|
+ this.fire('animationend');
|
|
|
+ },
|
|
|
+ _animationZoomIn: function (previousZoomLevel, newZoomLevel) {
|
|
|
+ var me = this,
|
|
|
+ bounds = this._getExpandedVisibleBounds(),
|
|
|
+ i;
|
|
|
+
|
|
|
+ //Add all children of current clusters to map and remove those clusters from map
|
|
|
+ this._topClusterLevel._recursively(bounds, previousZoomLevel, 0, function (c) {
|
|
|
+ var startPos = c._latlng,
|
|
|
+ markers = c._markers,
|
|
|
+ m;
|
|
|
+
|
|
|
+ if (c._isSingleParent() && previousZoomLevel + 1 === newZoomLevel) { //Immediately add the new child and remove us
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(me, c);
|
|
|
+ c._recursivelyAddChildrenToMap(null, newZoomLevel, bounds);
|
|
|
+ } else {
|
|
|
+ //Fade out old cluster
|
|
|
+ c.setOpacity(0);
|
|
|
+ c._recursivelyAddChildrenToMap(startPos, newZoomLevel, bounds);
|
|
|
+ }
|
|
|
+
|
|
|
+ //Remove all markers that aren't visible any more
|
|
|
+ //TODO: Do we actually need to do this on the higher levels too?
|
|
|
+ for (i = markers.length - 1; i >= 0; i--) {
|
|
|
+ m = markers[i];
|
|
|
+ if (!bounds.contains(m._latlng)) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(me, m);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ });
|
|
|
+
|
|
|
+ this._forceLayout();
|
|
|
+ var j, n;
|
|
|
+
|
|
|
+ //Update opacities
|
|
|
+ me._topClusterLevel._recursivelyBecomeVisible(bounds, newZoomLevel);
|
|
|
+ //TODO Maybe? Update markers in _recursivelyBecomeVisible
|
|
|
+ for (j in me._layers) {
|
|
|
+ if (me._layers.hasOwnProperty(j)) {
|
|
|
+ n = me._layers[j];
|
|
|
+
|
|
|
+ if (!(n instanceof L.MarkerCluster) && n._icon) {
|
|
|
+ n.setOpacity(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //update the positions of the just added clusters/markers
|
|
|
+ me._topClusterLevel._recursively(bounds, previousZoomLevel, newZoomLevel, function (c) {
|
|
|
+ c._recursivelyRestoreChildPositions(newZoomLevel);
|
|
|
+ });
|
|
|
+
|
|
|
+ //Remove the old clusters and close the zoom animation
|
|
|
+
|
|
|
+ setTimeout(function () {
|
|
|
+ //update the positions of the just added clusters/markers
|
|
|
+ me._topClusterLevel._recursively(bounds, previousZoomLevel, 0, function (c) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(me, c);
|
|
|
+ c.setOpacity(1);
|
|
|
+ });
|
|
|
+
|
|
|
+ me._animationEnd();
|
|
|
+ }, 250);
|
|
|
+ },
|
|
|
+
|
|
|
+ _animationZoomOut: function (previousZoomLevel, newZoomLevel) {
|
|
|
+ this._animationZoomOutSingle(this._topClusterLevel, previousZoomLevel - 1, newZoomLevel);
|
|
|
+
|
|
|
+ //Need to add markers for those that weren't on the map before but are now
|
|
|
+ this._topClusterLevel._recursivelyAddChildrenToMap(null, newZoomLevel, this._getExpandedVisibleBounds());
|
|
|
+ //Remove markers that were on the map before but won't be now
|
|
|
+ this._topClusterLevel._recursivelyRemoveChildrenFromMap(this._currentShownBounds, previousZoomLevel, this._getExpandedVisibleBounds());
|
|
|
+ },
|
|
|
+ _animationZoomOutSingle: function (cluster, previousZoomLevel, newZoomLevel) {
|
|
|
+ var bounds = this._getExpandedVisibleBounds();
|
|
|
+
|
|
|
+ //Animate all of the markers in the clusters to move to their cluster center point
|
|
|
+ cluster._recursivelyAnimateChildrenInAndAddSelfToMap(bounds, previousZoomLevel + 1, newZoomLevel);
|
|
|
+
|
|
|
+ var me = this;
|
|
|
+
|
|
|
+ //Update the opacity (If we immediately set it they won't animate)
|
|
|
+ this._forceLayout();
|
|
|
+ cluster._recursivelyBecomeVisible(bounds, newZoomLevel);
|
|
|
+
|
|
|
+ //TODO: Maybe use the transition timing stuff to make this more reliable
|
|
|
+ //When the animations are done, tidy up
|
|
|
+ setTimeout(function () {
|
|
|
+
|
|
|
+ //This cluster stopped being a cluster before the timeout fired
|
|
|
+ if (cluster._childCount === 1) {
|
|
|
+ var m = cluster._markers[0];
|
|
|
+ //If we were in a cluster animation at the time then the opacity and position of our child could be wrong now, so fix it
|
|
|
+ m.setLatLng(m.getLatLng());
|
|
|
+ m.setOpacity(1);
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ cluster._recursively(bounds, newZoomLevel, 0, function (c) {
|
|
|
+ c._recursivelyRemoveChildrenFromMap(bounds, previousZoomLevel + 1);
|
|
|
+ });
|
|
|
+ me._animationEnd();
|
|
|
+ }, 250);
|
|
|
+ },
|
|
|
+ _animationAddLayer: function (layer, newCluster) {
|
|
|
+ var me = this;
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(this, layer);
|
|
|
+ if (newCluster !== layer) {
|
|
|
+ if (newCluster._childCount > 2) { //Was already a cluster
|
|
|
+
|
|
|
+ newCluster._updateIcon();
|
|
|
+ this._forceLayout();
|
|
|
+ this._animationStart();
|
|
|
+
|
|
|
+ layer._setPos(this._map.latLngToLayerPoint(newCluster.getLatLng()));
|
|
|
+ layer.setOpacity(0);
|
|
|
+
|
|
|
+ setTimeout(function () {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(me, layer);
|
|
|
+ layer.setOpacity(1);
|
|
|
+
|
|
|
+ me._animationEnd();
|
|
|
+ }, 250);
|
|
|
+
|
|
|
+ } else { //Just became a cluster
|
|
|
+ this._forceLayout();
|
|
|
+
|
|
|
+ me._animationStart();
|
|
|
+ me._animationZoomOutSingle(newCluster, this._map.getMaxZoom(), this._map.getZoom());
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Force a browser layout of stuff in the map
|
|
|
+ // Should apply the current opacity and location to all elements so we can update them again for an animation
|
|
|
+ _forceLayout: function () {
|
|
|
+ //In my testing this works, infact offsetWidth of any element seems to work.
|
|
|
+ //Could loop all this._layers and do this for each _icon if it stops working
|
|
|
+
|
|
|
+ L.Util.falseFn(document.body.offsetWidth);
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+L.MarkerCluster = L.Marker.extend({
|
|
|
+ initialize: function (group, zoom, a, b) {
|
|
|
+
|
|
|
+ L.Marker.prototype.initialize.call(this, a ? (a._cLatLng || a.getLatLng()) : new L.LatLng(0, 0), { icon: this });
|
|
|
+
|
|
|
+
|
|
|
+ this._group = group;
|
|
|
+ this._zoom = zoom;
|
|
|
+
|
|
|
+ this._markers = [];
|
|
|
+ this._childClusters = [];
|
|
|
+ this._childCount = 0;
|
|
|
+ this._iconNeedsUpdate = true;
|
|
|
+
|
|
|
+ this._bounds = new L.LatLngBounds();
|
|
|
+
|
|
|
+ if (a) {
|
|
|
+ this._addChild(a);
|
|
|
+ }
|
|
|
+ if (b) {
|
|
|
+ this._addChild(b);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Recursively retrieve all child markers of this cluster
|
|
|
+ getAllChildMarkers: function (storageArray) {
|
|
|
+ storageArray = storageArray || [];
|
|
|
+
|
|
|
+ for (var i = this._childClusters.length - 1; i >= 0; i--) {
|
|
|
+ this._childClusters[i].getAllChildMarkers(storageArray);
|
|
|
+ }
|
|
|
+
|
|
|
+ for (var j = this._markers.length - 1; j >= 0; j--) {
|
|
|
+ storageArray.push(this._markers[j]);
|
|
|
+ }
|
|
|
+
|
|
|
+ return storageArray;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Returns the count of how many child markers we have
|
|
|
+ getChildCount: function () {
|
|
|
+ return this._childCount;
|
|
|
+ },
|
|
|
+
|
|
|
+ //Zoom to the extents of this cluster
|
|
|
+ zoomToBounds: function () {
|
|
|
+ this._group._map.fitBounds(this._bounds);
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ _updateIcon: function () {
|
|
|
+ this._iconNeedsUpdate = true;
|
|
|
+ if (this._icon) {
|
|
|
+ this.setIcon(this);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Cludge for Icon, we pretend to be an icon for performance
|
|
|
+ createIcon: function () {
|
|
|
+ if (this._iconNeedsUpdate) {
|
|
|
+ this._iconObj = this._group.options.iconCreateFunction(this);
|
|
|
+ this._iconNeedsUpdate = false;
|
|
|
+ }
|
|
|
+ return this._iconObj.createIcon();
|
|
|
+ },
|
|
|
+ createShadow: function () {
|
|
|
+ return this._iconObj.createShadow();
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ _addChild: function (new1, isNotificationFromChild) {
|
|
|
+
|
|
|
+ this._iconNeedsUpdate = true;
|
|
|
+ this._expandBounds(new1);
|
|
|
+
|
|
|
+ if (new1 instanceof L.MarkerCluster) {
|
|
|
+ if (!isNotificationFromChild) {
|
|
|
+ this._childClusters.push(new1);
|
|
|
+ new1.__parent = this;
|
|
|
+ }
|
|
|
+ this._childCount += new1._childCount;
|
|
|
+ } else {
|
|
|
+ if (!isNotificationFromChild) {
|
|
|
+ this._markers.push(new1);
|
|
|
+ }
|
|
|
+ this._childCount++;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this.__parent) {
|
|
|
+ this.__parent._addChild(new1, true);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Expand our bounds and tell our parent to
|
|
|
+ _expandBounds: function (marker) {
|
|
|
+ var addedCount,
|
|
|
+ addedLatLng = marker._wLatLng || marker._latlng;
|
|
|
+
|
|
|
+ if (marker instanceof L.MarkerCluster) {
|
|
|
+ this._bounds.extend(marker._bounds);
|
|
|
+ addedCount = marker._childCount;
|
|
|
+ } else {
|
|
|
+ this._bounds.extend(addedLatLng);
|
|
|
+ addedCount = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!this._cLatLng) {
|
|
|
+ // when clustering, take position of the first point as the cluster center
|
|
|
+ this._cLatLng = marker._cLatLng || addedLatLng;
|
|
|
+ }
|
|
|
+
|
|
|
+ // when showing clusters, take weighted average of all points as cluster center
|
|
|
+ var totalCount = this._childCount + addedCount;
|
|
|
+
|
|
|
+ //Calculate weighted latlng for display
|
|
|
+ if (!this._wLatLng) {
|
|
|
+ this._latlng = this._wLatLng = new L.LatLng(addedLatLng.lat, addedLatLng.lng);
|
|
|
+ } else {
|
|
|
+ this._wLatLng.lat = (addedLatLng.lat * addedCount + this._wLatLng.lat * this._childCount) / totalCount;
|
|
|
+ this._wLatLng.lng = (addedLatLng.lng * addedCount + this._wLatLng.lng * this._childCount) / totalCount;
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //Set our markers position as given and add it to the map
|
|
|
+ _addToMap: function (startPos) {
|
|
|
+ if (startPos) {
|
|
|
+ this._backupLatlng = this._latlng;
|
|
|
+ this.setLatLng(startPos);
|
|
|
+ }
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(this._group, this);
|
|
|
+ },
|
|
|
+
|
|
|
+ _recursivelyAnimateChildrenIn: function (bounds, center, maxZoom) {
|
|
|
+ this._recursively(bounds, 0, maxZoom - 1,
|
|
|
+ function (c) {
|
|
|
+ var markers = c._markers,
|
|
|
+ i, m;
|
|
|
+ for (i = markers.length - 1; i >= 0; i--) {
|
|
|
+ m = markers[i];
|
|
|
+
|
|
|
+ //Only do it if the icon is still on the map
|
|
|
+ if (m._icon) {
|
|
|
+ m._setPos(center);
|
|
|
+ m.setOpacity(0);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+ function (c) {
|
|
|
+ var childClusters = c._childClusters,
|
|
|
+ j, cm;
|
|
|
+ for (j = childClusters.length - 1; j >= 0; j--) {
|
|
|
+ cm = childClusters[j];
|
|
|
+ if (cm._icon) {
|
|
|
+ cm._setPos(center);
|
|
|
+ cm.setOpacity(0);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ );
|
|
|
+ },
|
|
|
+
|
|
|
+ _recursivelyAnimateChildrenInAndAddSelfToMap: function (bounds, previousZoomLevel, newZoomLevel) {
|
|
|
+ this._recursively(bounds, newZoomLevel, 0,
|
|
|
+ function (c) {
|
|
|
+ c._recursivelyAnimateChildrenIn(bounds, c._group._map.latLngToLayerPoint(c.getLatLng()).round(), previousZoomLevel);
|
|
|
+
|
|
|
+ //TODO: depthToAnimateIn affects _isSingleParent, if there is a multizoom we may/may not be.
|
|
|
+ //As a hack we only do a animation free zoom on a single level zoom, if someone does multiple levels then we always animate
|
|
|
+ if (c._isSingleParent() && previousZoomLevel - 1 === newZoomLevel) {
|
|
|
+ c.setOpacity(1);
|
|
|
+ c._recursivelyRemoveChildrenFromMap(bounds, previousZoomLevel); //Immediately remove our children as we are replacing them. TODO previousBounds not bounds
|
|
|
+ } else {
|
|
|
+ c.setOpacity(0);
|
|
|
+ }
|
|
|
+
|
|
|
+ c._addToMap();
|
|
|
+ }
|
|
|
+ );
|
|
|
+ },
|
|
|
+
|
|
|
+ _recursivelyBecomeVisible: function (bounds, zoomLevel) {
|
|
|
+ this._recursively(bounds, 0, zoomLevel, null, function (c) {
|
|
|
+ c.setOpacity(1);
|
|
|
+ });
|
|
|
+ },
|
|
|
+
|
|
|
+ _recursivelyAddChildrenToMap: function (startPos, zoomLevel, bounds) {
|
|
|
+ this._recursively(bounds, -1, zoomLevel,
|
|
|
+ function (c) {
|
|
|
+ if (zoomLevel === c._zoom) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ //Add our child markers at startPos (so they can be animated out)
|
|
|
+ for (var i = c._markers.length - 1; i >= 0; i--) {
|
|
|
+ var nm = c._markers[i];
|
|
|
+
|
|
|
+ if (!bounds.contains(nm._latlng)) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (startPos) {
|
|
|
+ nm._backupLatlng = nm.getLatLng();
|
|
|
+
|
|
|
+ nm.setLatLng(startPos);
|
|
|
+ nm.setOpacity(0);
|
|
|
+ }
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(c._group, nm);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ function (c) {
|
|
|
+ c._addToMap(startPos);
|
|
|
+ }
|
|
|
+ );
|
|
|
+ },
|
|
|
+
|
|
|
+ _recursivelyRestoreChildPositions: function (zoomLevel) {
|
|
|
+ //Fix positions of child markers
|
|
|
+ for (var i = this._markers.length - 1; i >= 0; i--) {
|
|
|
+ var nm = this._markers[i];
|
|
|
+ if (nm._backupLatlng) {
|
|
|
+ nm.setLatLng(nm._backupLatlng);
|
|
|
+ delete nm._backupLatlng;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (zoomLevel - 1 === this._zoom) {
|
|
|
+ //Reposition child clusters
|
|
|
+ for (var j = this._childClusters.length - 1; j >= 0; j--) {
|
|
|
+ this._childClusters[j]._restorePosition();
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ for (var k = this._childClusters.length - 1; k >= 0; k--) {
|
|
|
+ this._childClusters[k]._recursivelyRestoreChildPositions(zoomLevel);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _restorePosition: function () {
|
|
|
+ if (this._backupLatlng) {
|
|
|
+ this.setLatLng(this._backupLatlng);
|
|
|
+ delete this._backupLatlng;
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //exceptBounds: If set, don't remove any markers/clusters in it
|
|
|
+ _recursivelyRemoveChildrenFromMap: function (previousBounds, zoomLevel, exceptBounds) {
|
|
|
+ var m, i;
|
|
|
+ this._recursively(previousBounds, -1, zoomLevel - 1,
|
|
|
+ function (c) {
|
|
|
+ //Remove markers at every level
|
|
|
+ for (i = c._markers.length - 1; i >= 0; i--) {
|
|
|
+ m = c._markers[i];
|
|
|
+ if (!exceptBounds || !exceptBounds.contains(m._latlng)) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(c._group, m);
|
|
|
+ m.setOpacity(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+ function (c) {
|
|
|
+ //Remove child clusters at just the bottom level
|
|
|
+ for (i = c._childClusters.length - 1; i >= 0; i--) {
|
|
|
+ m = c._childClusters[i];
|
|
|
+ if (!exceptBounds || !exceptBounds.contains(m._latlng)) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(c._group, m);
|
|
|
+ m.setOpacity(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ );
|
|
|
+ },
|
|
|
+
|
|
|
+ //Run the given functions recursively to this and child clusters
|
|
|
+ // boundsToApplyTo: a L.LatLngBounds representing the bounds of what clusters to recurse in to
|
|
|
+ // zoomLevelToStart: zoom level to start running functions (inclusive)
|
|
|
+ // zoomLevelToStop: zoom level to stop running functions (inclusive)
|
|
|
+ // runAtEveryLevel: function that takes an L.MarkerCluster as an argument that should be applied on every level
|
|
|
+ // runAtBottomLevel: function that takes an L.MarkerCluster as an argument that should be applied at only the bottom level
|
|
|
+ _recursively: function (boundsToApplyTo, zoomLevelToStart, zoomLevelToStop, runAtEveryLevel, runAtBottomLevel) {
|
|
|
+ var childClusters = this._childClusters,
|
|
|
+ zoom = this._zoom,
|
|
|
+ i, c;
|
|
|
+
|
|
|
+ if (zoomLevelToStart > zoom) { //Still going down to required depth, just recurse to child clusters
|
|
|
+ for (i = childClusters.length - 1; i >= 0; i--) {
|
|
|
+ c = childClusters[i];
|
|
|
+ if (boundsToApplyTo.intersects(c._bounds)) {
|
|
|
+ c._recursively(boundsToApplyTo, zoomLevelToStart, zoomLevelToStop, runAtEveryLevel, runAtBottomLevel);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else { //In required depth
|
|
|
+
|
|
|
+ if (runAtEveryLevel) {
|
|
|
+ runAtEveryLevel(this);
|
|
|
+ }
|
|
|
+ if (runAtBottomLevel && this._zoom === zoomLevelToStop) {
|
|
|
+ runAtBottomLevel(this);
|
|
|
+ }
|
|
|
+
|
|
|
+ //TODO: This loop is almost the same as above
|
|
|
+ if (zoomLevelToStop > zoom) {
|
|
|
+ for (i = childClusters.length - 1; i >= 0; i--) {
|
|
|
+ c = childClusters[i];
|
|
|
+ if (boundsToApplyTo.intersects(c._bounds)) {
|
|
|
+ c._recursively(boundsToApplyTo, zoomLevelToStart, zoomLevelToStop, runAtEveryLevel, runAtBottomLevel);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _recalculateBounds: function () {
|
|
|
+ var markers = this._markers,
|
|
|
+ childClusters = this._childClusters,
|
|
|
+ i;
|
|
|
+
|
|
|
+ this._bounds = new L.LatLngBounds();
|
|
|
+ delete this._wLatLng;
|
|
|
+
|
|
|
+ for (i = markers.length - 1; i >= 0; i--) {
|
|
|
+ this._expandBounds(markers[i]);
|
|
|
+ }
|
|
|
+ for (i = childClusters.length - 1; i >= 0; i--) {
|
|
|
+ this._expandBounds(childClusters[i]);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ //Returns true if we are the parent of only one cluster and that cluster is the same as us
|
|
|
+ _isSingleParent: function () {
|
|
|
+ //Don't need to check this._markers as the rest won't work if there are any
|
|
|
+ return this._childClusters.length > 0 && this._childClusters[0]._childCount === this._childCount;
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+L.DistanceGrid = function (cellSize) {
|
|
|
+ this._cellSize = cellSize;
|
|
|
+ this._sqCellSize = cellSize * cellSize;
|
|
|
+ this._grid = {};
|
|
|
+ this._objectPoint = { };
|
|
|
+};
|
|
|
+
|
|
|
+L.DistanceGrid.prototype = {
|
|
|
+
|
|
|
+ addObject: function (obj, point) {
|
|
|
+ var x = this._getCoord(point.x),
|
|
|
+ y = this._getCoord(point.y),
|
|
|
+ grid = this._grid,
|
|
|
+ row = grid[y] = grid[y] || {},
|
|
|
+ cell = row[x] = row[x] || [],
|
|
|
+ stamp = L.Util.stamp(obj);
|
|
|
+
|
|
|
+ this._objectPoint[stamp] = point;
|
|
|
+
|
|
|
+ cell.push(obj);
|
|
|
+ },
|
|
|
+
|
|
|
+ updateObject: function (obj, point) {
|
|
|
+ this.removeObject(obj);
|
|
|
+ this.addObject(obj, point);
|
|
|
+ },
|
|
|
+
|
|
|
+ //Returns true if the object was found
|
|
|
+ removeObject: function (obj, point) {
|
|
|
+ var x = this._getCoord(point.x),
|
|
|
+ y = this._getCoord(point.y),
|
|
|
+ grid = this._grid,
|
|
|
+ row = grid[y] = grid[y] || {},
|
|
|
+ cell = row[x] = row[x] || [],
|
|
|
+ i, len;
|
|
|
+
|
|
|
+ delete this._objectPoint[L.Util.stamp(obj)];
|
|
|
+
|
|
|
+ for (i = 0, len = cell.length; i < len; i++) {
|
|
|
+ if (cell[i] === obj) {
|
|
|
+
|
|
|
+ cell.splice(i, 1);
|
|
|
+
|
|
|
+ if (len === 1) {
|
|
|
+ delete row[x];
|
|
|
+ }
|
|
|
+
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ eachObject: function (fn, context) {
|
|
|
+ var i, j, k, len, row, cell, removed,
|
|
|
+ grid = this._grid;
|
|
|
+
|
|
|
+ for (i in grid) {
|
|
|
+ if (grid.hasOwnProperty(i)) {
|
|
|
+ row = grid[i];
|
|
|
+
|
|
|
+ for (j in row) {
|
|
|
+ if (row.hasOwnProperty(j)) {
|
|
|
+ cell = row[j];
|
|
|
+
|
|
|
+ for (k = 0, len = cell.length; k < len; k++) {
|
|
|
+ removed = fn.call(context, cell[k]);
|
|
|
+ if (removed) {
|
|
|
+ k--;
|
|
|
+ len--;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ getNearObject: function (point) {
|
|
|
+ var x = this._getCoord(point.x),
|
|
|
+ y = this._getCoord(point.y),
|
|
|
+ i, j, k, row, cell, len, obj, dist,
|
|
|
+ objectPoint = this._objectPoint,
|
|
|
+ closestDistSq = this._sqCellSize,
|
|
|
+ closest = null;
|
|
|
+
|
|
|
+ for (i = y - 1; i <= y + 1; i++) {
|
|
|
+ row = this._grid[i];
|
|
|
+ if (row) {
|
|
|
+
|
|
|
+ for (j = x - 1; j <= x + 1; j++) {
|
|
|
+ cell = row[j];
|
|
|
+ if (cell) {
|
|
|
+
|
|
|
+ for (k = 0, len = cell.length; k < len; k++) {
|
|
|
+ obj = cell[k];
|
|
|
+ dist = this._sqDist(objectPoint[L.Util.stamp(obj)], point);
|
|
|
+ if (dist < closestDistSq) {
|
|
|
+ closestDistSq = dist;
|
|
|
+ closest = obj;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return closest;
|
|
|
+ },
|
|
|
+
|
|
|
+ _getCoord: function (x) {
|
|
|
+ return Math.floor(x / this._cellSize);
|
|
|
+ },
|
|
|
+
|
|
|
+ _sqDist: function (p, p2) {
|
|
|
+ var dx = p2.x - p.x,
|
|
|
+ dy = p2.y - p.y;
|
|
|
+ return dx * dx + dy * dy;
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/* Copyright (c) 2012 the authors listed at the following URL, and/or
|
|
|
+the authors of referenced articles or incorporated external code:
|
|
|
+http://en.literateprograms.org/Quickhull_(Javascript)?action=history&offset=20120410175256
|
|
|
+
|
|
|
+Permission is hereby granted, free of charge, to any person obtaining
|
|
|
+a copy of this software and associated documentation files (the
|
|
|
+"Software"), to deal in the Software without restriction, including
|
|
|
+without limitation the rights to use, copy, modify, merge, publish,
|
|
|
+distribute, sublicense, and/or sell copies of the Software, and to
|
|
|
+permit persons to whom the Software is furnished to do so, subject to
|
|
|
+the following conditions:
|
|
|
+
|
|
|
+The above copyright notice and this permission notice shall be
|
|
|
+included in all copies or substantial portions of the Software.
|
|
|
+
|
|
|
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
|
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
|
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
|
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
|
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
|
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
|
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
+
|
|
|
+Retrieved from: http://en.literateprograms.org/Quickhull_(Javascript)?oldid=18434
|
|
|
+*/
|
|
|
+
|
|
|
+(function () {
|
|
|
+ L.QuickHull = {
|
|
|
+ getDistant: function (cpt, bl) {
|
|
|
+ var vY = bl[1].lat - bl[0].lat,
|
|
|
+ vX = bl[0].lng - bl[1].lng;
|
|
|
+ return (vX * (cpt.lat - bl[0].lat) + vY * (cpt.lng - bl[0].lng));
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ findMostDistantPointFromBaseLine: function (baseLine, latLngs) {
|
|
|
+ var maxD = 0,
|
|
|
+ maxPt = null,
|
|
|
+ newPoints = [],
|
|
|
+ i, pt, d;
|
|
|
+
|
|
|
+ for (i = latLngs.length - 1; i >= 0; i--) {
|
|
|
+ pt = latLngs[i];
|
|
|
+ d = this.getDistant(pt, baseLine);
|
|
|
+
|
|
|
+ if (d > 0) {
|
|
|
+ newPoints.push(pt);
|
|
|
+ } else {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (d > maxD) {
|
|
|
+ maxD = d;
|
|
|
+ maxPt = pt;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ return { 'maxPoint': maxPt, 'newPoints': newPoints };
|
|
|
+ },
|
|
|
+
|
|
|
+ buildConvexHull: function (baseLine, latLngs) {
|
|
|
+ var convexHullBaseLines = [],
|
|
|
+ t = this.findMostDistantPointFromBaseLine(baseLine, latLngs);
|
|
|
+
|
|
|
+ if (t.maxPoint) { // if there is still a point "outside" the base line
|
|
|
+ convexHullBaseLines =
|
|
|
+ convexHullBaseLines.concat(
|
|
|
+ this.buildConvexHull([baseLine[0], t.maxPoint], t.newPoints)
|
|
|
+ );
|
|
|
+ convexHullBaseLines =
|
|
|
+ convexHullBaseLines.concat(
|
|
|
+ this.buildConvexHull([t.maxPoint, baseLine[1]], t.newPoints)
|
|
|
+ );
|
|
|
+ return convexHullBaseLines;
|
|
|
+ } else { // if there is no more point "outside" the base line, the current base line is part of the convex hull
|
|
|
+ return [baseLine];
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ getConvexHull: function (latLngs) {
|
|
|
+ //find first baseline
|
|
|
+ var maxLat = false, minLat = false,
|
|
|
+ maxPt = null, minPt = null,
|
|
|
+ i;
|
|
|
+
|
|
|
+ for (i = latLngs.length - 1; i >= 0; i--) {
|
|
|
+ var pt = latLngs[i];
|
|
|
+ if (maxLat === false || pt.lat > maxLat) {
|
|
|
+ maxPt = pt;
|
|
|
+ maxLat = pt.lat;
|
|
|
+ }
|
|
|
+ if (minLat === false || pt.lat < minLat) {
|
|
|
+ minPt = pt;
|
|
|
+ minLat = pt.lat;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ var ch = [].concat(this.buildConvexHull([minPt, maxPt], latLngs),
|
|
|
+ this.buildConvexHull([maxPt, minPt], latLngs));
|
|
|
+ return ch;
|
|
|
+ }
|
|
|
+ };
|
|
|
+}());
|
|
|
+
|
|
|
+L.MarkerCluster.include({
|
|
|
+ getConvexHull: function () {
|
|
|
+ var childMarkers = this.getAllChildMarkers(),
|
|
|
+ points = [],
|
|
|
+ hullLatLng = [],
|
|
|
+ hull, p, i;
|
|
|
+
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ p = childMarkers[i].getLatLng();
|
|
|
+ points.push(p);
|
|
|
+ }
|
|
|
+
|
|
|
+ hull = L.QuickHull.getConvexHull(points);
|
|
|
+
|
|
|
+ for (i = hull.length - 1; i >= 0; i--) {
|
|
|
+ hullLatLng.push(hull[i][0]);
|
|
|
+ }
|
|
|
+
|
|
|
+ return hullLatLng;
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+//This code is 100% based on https://github.com/jawj/OverlappingMarkerSpiderfier-Leaflet
|
|
|
+//Huge thanks to jawj for implementing it first to make my job easy :-)
|
|
|
+
|
|
|
+L.MarkerCluster.include({
|
|
|
+
|
|
|
+ _2PI: Math.PI * 2,
|
|
|
+ _circleFootSeparation: 25, //related to circumference of circle
|
|
|
+ _circleStartAngle: Math.PI / 6,
|
|
|
+
|
|
|
+ _spiralFootSeparation: 28, //related to size of spiral (experiment!)
|
|
|
+ _spiralLengthStart: 11,
|
|
|
+ _spiralLengthFactor: 5,
|
|
|
+
|
|
|
+ _circleSpiralSwitchover: 9, //show spiral instead of circle from this marker count upwards.
|
|
|
+ // 0 -> always spiral; Infinity -> always circle
|
|
|
+
|
|
|
+ spiderfy: function () {
|
|
|
+ if (this._group._spiderfied === this || this._group._inZoomAnimation) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var childMarkers = this.getAllChildMarkers(),
|
|
|
+ group = this._group,
|
|
|
+ map = group._map,
|
|
|
+ center = map.latLngToLayerPoint(this._latlng),
|
|
|
+ positions;
|
|
|
+
|
|
|
+ this._group._unspiderfy();
|
|
|
+ this._group._spiderfied = this;
|
|
|
+
|
|
|
+ //TODO Maybe: childMarkers order by distance to center
|
|
|
+
|
|
|
+ if (childMarkers.length >= this._circleSpiralSwitchover) {
|
|
|
+ positions = this._generatePointsSpiral(childMarkers.length, center);
|
|
|
+ } else {
|
|
|
+ center.y += 10; //Otherwise circles look wrong
|
|
|
+ positions = this._generatePointsCircle(childMarkers.length, center);
|
|
|
+ }
|
|
|
+
|
|
|
+ this._animationSpiderfy(childMarkers, positions);
|
|
|
+ },
|
|
|
+
|
|
|
+ unspiderfy: function (zoomDetails) {
|
|
|
+ /// <param Name="zoomDetails">Argument from zoomanim if being called in a zoom animation or null otherwise</param>
|
|
|
+ if (this._group._inZoomAnimation) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ this._animationUnspiderfy(zoomDetails);
|
|
|
+
|
|
|
+ this._group._spiderfied = null;
|
|
|
+ },
|
|
|
+
|
|
|
+ _generatePointsCircle: function (count, centerPt) {
|
|
|
+ var circumference = this._circleFootSeparation * (2 + count),
|
|
|
+ legLength = circumference / this._2PI, //radius from circumference
|
|
|
+ angleStep = this._2PI / count,
|
|
|
+ res = [],
|
|
|
+ i, angle;
|
|
|
+
|
|
|
+ res.length = count;
|
|
|
+
|
|
|
+ for (i = count - 1; i >= 0; i--) {
|
|
|
+ angle = this._circleStartAngle + i * angleStep;
|
|
|
+ res[i] = new L.Point(centerPt.x + legLength * Math.cos(angle), centerPt.y + legLength * Math.sin(angle))._round();
|
|
|
+ }
|
|
|
+
|
|
|
+ return res;
|
|
|
+ },
|
|
|
+
|
|
|
+ _generatePointsSpiral: function (count, centerPt) {
|
|
|
+ var legLength = this._spiralLengthStart,
|
|
|
+ angle = 0,
|
|
|
+ res = [],
|
|
|
+ i;
|
|
|
+
|
|
|
+ res.length = count;
|
|
|
+
|
|
|
+ for (i = count - 1; i >= 0; i--) {
|
|
|
+ angle += this._spiralFootSeparation / legLength + i * 0.0005;
|
|
|
+ res[i] = new L.Point(centerPt.x + legLength * Math.cos(angle), centerPt.y + legLength * Math.sin(angle))._round();
|
|
|
+ legLength += this._2PI * this._spiralLengthFactor / angle;
|
|
|
+ }
|
|
|
+ return res;
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+L.MarkerCluster.include(!L.DomUtil.TRANSITION ? {
|
|
|
+ //Non Animated versions of everything
|
|
|
+ _animationSpiderfy: function (childMarkers, positions) {
|
|
|
+ var group = this._group,
|
|
|
+ map = group._map,
|
|
|
+ i, m, leg, newPos;
|
|
|
+
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ newPos = map.layerPointToLatLng(positions[i]);
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ m._preSpiderfyLatlng = m._latlng;
|
|
|
+ m.setLatLng(newPos);
|
|
|
+ m.setZIndexOffset(1000000); //Make these appear on top of EVERYTHING
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(group, m);
|
|
|
+
|
|
|
+
|
|
|
+ leg = new L.Polyline([this._latlng, newPos], { weight: 1.5, color: '#222' });
|
|
|
+ map.addLayer(leg);
|
|
|
+ m._spiderLeg = leg;
|
|
|
+ }
|
|
|
+ this.setOpacity(0.3);
|
|
|
+ group.fire('spiderfied');
|
|
|
+ },
|
|
|
+
|
|
|
+ _animationUnspiderfy: function () {
|
|
|
+ var group = this._group,
|
|
|
+ map = group._map,
|
|
|
+ childMarkers = this.getAllChildMarkers(),
|
|
|
+ m, i;
|
|
|
+
|
|
|
+ this.setOpacity(1);
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(group, m);
|
|
|
+
|
|
|
+ m.setLatLng(m._preSpiderfyLatlng);
|
|
|
+ delete m._preSpiderfyLatlng;
|
|
|
+ m.setZIndexOffset(0);
|
|
|
+
|
|
|
+ map.removeLayer(m._spiderLeg);
|
|
|
+ delete m._spiderLeg;
|
|
|
+ }
|
|
|
+ }
|
|
|
+} : {
|
|
|
+ //Animated versions here
|
|
|
+ _animationSpiderfy: function (childMarkers, positions) {
|
|
|
+ var me = this,
|
|
|
+ group = this._group,
|
|
|
+ map = group._map,
|
|
|
+ thisLayerPos = map.latLngToLayerPoint(this._latlng),
|
|
|
+ i, m, leg, newPos;
|
|
|
+
|
|
|
+ //Add markers to map hidden at our center point
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ m.setZIndexOffset(1000000); //Make these appear on top of EVERYTHING
|
|
|
+ m.setOpacity(0);
|
|
|
+
|
|
|
+ L.FeatureGroup.prototype.addLayer.call(group, m);
|
|
|
+
|
|
|
+ m._setPos(thisLayerPos);
|
|
|
+ }
|
|
|
+
|
|
|
+ group._forceLayout();
|
|
|
+ group._animationStart();
|
|
|
+
|
|
|
+ var initialLegOpacity = L.Path.SVG ? 0 : 0.3,
|
|
|
+ xmlns = L.Path.SVG_NS;
|
|
|
+
|
|
|
+
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ newPos = map.layerPointToLatLng(positions[i]);
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ //Move marker to new position
|
|
|
+ m._preSpiderfyLatlng = m._latlng;
|
|
|
+ m.setLatLng(newPos);
|
|
|
+ m.setOpacity(1);
|
|
|
+
|
|
|
+
|
|
|
+ //Add Legs.
|
|
|
+ leg = new L.Polyline([me._latlng, newPos], { weight: 1.5, color: '#222', opacity: initialLegOpacity });
|
|
|
+ map.addLayer(leg);
|
|
|
+ m._spiderLeg = leg;
|
|
|
+
|
|
|
+ //Following animations don't work for canvas
|
|
|
+ if (!L.Path.SVG) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ //How this works:
|
|
|
+ //http://stackoverflow.com/questions/5924238/how-do-you-animate-an-svg-path-in-ios
|
|
|
+ //http://dev.opera.com/articles/view/advanced-svg-animation-techniques/
|
|
|
+
|
|
|
+ //Animate length
|
|
|
+ var length = leg._path.getTotalLength();
|
|
|
+ leg._path.setAttribute("stroke-dasharray", length + "," + length);
|
|
|
+
|
|
|
+ var anim = document.createElementNS(xmlns, "animate");
|
|
|
+ anim.setAttribute("attributeName", "stroke-dashoffset");
|
|
|
+ anim.setAttribute("begin", "indefinite");
|
|
|
+ anim.setAttribute("from", length);
|
|
|
+ anim.setAttribute("to", 0);
|
|
|
+ anim.setAttribute("dur", 0.25);
|
|
|
+ leg._path.appendChild(anim);
|
|
|
+ anim.beginElement();
|
|
|
+
|
|
|
+ //Animate opacity
|
|
|
+ anim = document.createElementNS(xmlns, "animate");
|
|
|
+ anim.setAttribute("attributeName", "stroke-opacity");
|
|
|
+ anim.setAttribute("attributeName", "stroke-opacity");
|
|
|
+ anim.setAttribute("begin", "indefinite");
|
|
|
+ anim.setAttribute("from", 0);
|
|
|
+ anim.setAttribute("to", 0.5);
|
|
|
+ anim.setAttribute("dur", 0.25);
|
|
|
+ leg._path.appendChild(anim);
|
|
|
+ anim.beginElement();
|
|
|
+ }
|
|
|
+ me.setOpacity(0.3);
|
|
|
+
|
|
|
+ //Set the opacity of the spiderLegs back to their correct value
|
|
|
+ // The animations above override this until they complete.
|
|
|
+ // If the initial opacity of the spiderlegs isn't 0 then they appear before the animation starts.
|
|
|
+ if (L.Path.SVG) {
|
|
|
+ this._group._forceLayout();
|
|
|
+
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i]._spiderLeg;
|
|
|
+
|
|
|
+ m.options.opacity = 0.5;
|
|
|
+ m._path.setAttribute('stroke-opacity', 0.5);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ setTimeout(function () {
|
|
|
+ group._animationEnd();
|
|
|
+ group.fire('spiderfied');
|
|
|
+ }, 250);
|
|
|
+ },
|
|
|
+
|
|
|
+ _animationUnspiderfy: function (zoomDetails) {
|
|
|
+ var group = this._group,
|
|
|
+ map = group._map,
|
|
|
+ thisLayerPos = zoomDetails ? map._latLngToNewLayerPoint(this._latlng, zoomDetails.zoom, zoomDetails.center) : map.latLngToLayerPoint(this._latlng),
|
|
|
+ childMarkers = this.getAllChildMarkers(),
|
|
|
+ svg = L.Path.SVG,
|
|
|
+ m, i, a;
|
|
|
+
|
|
|
+ group._animationStart();
|
|
|
+
|
|
|
+ //Make us visible and bring the child markers back in
|
|
|
+ this.setOpacity(1);
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ //Fix up the location to the real one
|
|
|
+ m.setLatLng(m._preSpiderfyLatlng);
|
|
|
+ delete m._preSpiderfyLatlng;
|
|
|
+ //Hack override the location to be our center
|
|
|
+ m._setPos(thisLayerPos);
|
|
|
+
|
|
|
+ m.setOpacity(0);
|
|
|
+
|
|
|
+ //Animate the spider legs back in
|
|
|
+ if (svg) {
|
|
|
+ a = m._spiderLeg._path.childNodes[0];
|
|
|
+ a.setAttribute('to', a.getAttribute('from'));
|
|
|
+ a.setAttribute('from', 0);
|
|
|
+ a.beginElement();
|
|
|
+
|
|
|
+ a = m._spiderLeg._path.childNodes[1];
|
|
|
+ a.setAttribute('from', 0.5);
|
|
|
+ a.setAttribute('to', 0);
|
|
|
+ a.setAttribute('stroke-opacity', 0);
|
|
|
+ a.beginElement();
|
|
|
+
|
|
|
+ m._spiderLeg._path.setAttribute('stroke-opacity', 0);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ setTimeout(function () {
|
|
|
+ //If we have only <= one child left then that marker will be shown on the map so don't remove it!
|
|
|
+ var stillThereChildCount = 0;
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i];
|
|
|
+ if (m._spiderLeg) {
|
|
|
+ stillThereChildCount++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ for (i = childMarkers.length - 1; i >= 0; i--) {
|
|
|
+ m = childMarkers[i];
|
|
|
+
|
|
|
+ if (!m._spiderLeg) { //Has already been unspiderfied
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ m.setOpacity(1);
|
|
|
+ m.setZIndexOffset(0);
|
|
|
+
|
|
|
+ if (stillThereChildCount > 1) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(group, m);
|
|
|
+ }
|
|
|
+
|
|
|
+ map.removeLayer(m._spiderLeg);
|
|
|
+ delete m._spiderLeg;
|
|
|
+ }
|
|
|
+ group._animationEnd();
|
|
|
+ }, 250);
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+L.MarkerClusterGroup.include({
|
|
|
+ //The MarkerCluster currently spiderfied (if any)
|
|
|
+ _spiderfied: null,
|
|
|
+
|
|
|
+ _spiderfierOnAdd: function () {
|
|
|
+ this._map.on('click', this._unspiderfyWrapper, this);
|
|
|
+
|
|
|
+ if (this._map.options.zoomAnimation) {
|
|
|
+ this._map.on('zoomstart', this._unspiderfyZoomStart, this);
|
|
|
+ } else {
|
|
|
+ //Browsers without zoomAnimation don't fire zoomstart
|
|
|
+ this._map.on('zoomend', this._unspiderfyWrapper, this);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (L.Path.SVG && !L.Browser.touch) {
|
|
|
+ this._map._initPathRoot();
|
|
|
+ //Needs to happen in the pageload, not after, or animations don't work in webkit
|
|
|
+ // http://stackoverflow.com/questions/8455200/svg-animate-with-dynamically-added-elements
|
|
|
+ //Disable on touch browsers as the animation messes up on a touch zoom and isn't very noticable
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _spiderfierOnRemove: function () {
|
|
|
+ this._map.off('click', this._unspiderfyWrapper, this);
|
|
|
+ this._map.off('zoomstart', this._unspiderfyZoomStart, this);
|
|
|
+ this._map.off('zoomanim', this._unspiderfyZoomAnim, this);
|
|
|
+
|
|
|
+ this._unspiderfy(); //Ensure that markers are back where they should be
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ //On zoom start we add a zoomanim handler so that we are guaranteed to be last (after markers are animated)
|
|
|
+ //This means we can define the animation they do rather than Markers doing an animation to their actual location
|
|
|
+ _unspiderfyZoomStart: function () {
|
|
|
+ if (!this._map) { //May have been removed from the map by a zoomEnd handler
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ this._map.on('zoomanim', this._unspiderfyZoomAnim, this);
|
|
|
+ },
|
|
|
+ _unspiderfyZoomAnim: function (zoomDetails) {
|
|
|
+ //Wait until the first zoomanim after the user has finished touch-zooming before running the animation
|
|
|
+ if (L.DomUtil.hasClass(this._map._mapPane, 'leaflet-touching')) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ this._map.off('zoomanim', this._unspiderfyZoomAnim, this);
|
|
|
+ this._unspiderfy(zoomDetails);
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ _unspiderfyWrapper: function () {
|
|
|
+ /// <summary>_unspiderfy but passes no arguments</summary>
|
|
|
+ this._unspiderfy();
|
|
|
+ },
|
|
|
+
|
|
|
+ _unspiderfy: function (zoomDetails) {
|
|
|
+ if (this._spiderfied) {
|
|
|
+ this._spiderfied.unspiderfy(zoomDetails);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ //If the given layer is currently being spiderfied then we unspiderfy it so it isn't on the map anymore etc
|
|
|
+ _unspiderfyLayer: function (layer) {
|
|
|
+ if (layer._spiderLeg) {
|
|
|
+ L.FeatureGroup.prototype.removeLayer.call(this, layer);
|
|
|
+
|
|
|
+ layer.setOpacity(1);
|
|
|
+ //Position will be fixed up immediately in _animationUnspiderfy
|
|
|
+ layer.setZIndexOffset(0);
|
|
|
+
|
|
|
+ this._map.removeLayer(layer._spiderLeg);
|
|
|
+ delete layer._spiderLeg;
|
|
|
+ }
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+}(this));
|