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2015 lines
54 KiB
2015 lines
54 KiB
11 years ago
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/*
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Leaflet.markercluster, Provides Beautiful Animated Marker Clustering functionality for Leaflet, a JS library for interactive maps.
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https://github.com/Leaflet/Leaflet.markercluster
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(c) 2012-2013, Dave Leaver, smartrak
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*/
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(function (window, document, undefined) {
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/*
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* L.MarkerClusterGroup extends L.FeatureGroup by clustering the markers contained within
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*/
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L.MarkerClusterGroup = L.FeatureGroup.extend({
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options: {
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maxClusterRadius: 80, //A cluster will cover at most this many pixels from its center
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iconCreateFunction: null,
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spiderfyOnMaxZoom: true,
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showCoverageOnHover: true,
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zoomToBoundsOnClick: true,
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singleMarkerMode: false,
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disableClusteringAtZoom: null,
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// Setting this to false prevents the removal of any clusters outside of the viewpoint, which
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// is the default behaviour for performance reasons.
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removeOutsideVisibleBounds: true,
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//Whether to animate adding markers after adding the MarkerClusterGroup to the map
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// If you are adding individual markers set to true, if adding bulk markers leave false for massive performance gains.
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animateAddingMarkers: false,
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//Increase to increase the distance away that spiderfied markers appear from the center
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spiderfyDistanceMultiplier: 1,
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//Options to pass to the L.Polygon constructor
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polygonOptions: {}
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},
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initialize: function (options) {
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L.Util.setOptions(this, options);
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if (!this.options.iconCreateFunction) {
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this.options.iconCreateFunction = this._defaultIconCreateFunction;
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}
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this._featureGroup = L.featureGroup();
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this._featureGroup.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
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this._nonPointGroup = L.featureGroup();
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this._nonPointGroup.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
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this._inZoomAnimation = 0;
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this._needsClustering = [];
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this._needsRemoving = []; //Markers removed while we aren't on the map need to be kept track of
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//The bounds of the currently shown area (from _getExpandedVisibleBounds) Updated on zoom/move
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this._currentShownBounds = null;
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},
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addLayer: function (layer) {
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if (layer instanceof L.LayerGroup) {
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var array = [];
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for (var i in layer._layers) {
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array.push(layer._layers[i]);
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}
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return this.addLayers(array);
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}
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//Don't cluster non point data
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if (!layer.getLatLng) {
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this._nonPointGroup.addLayer(layer);
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return this;
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}
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if (!this._map) {
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this._needsClustering.push(layer);
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return this;
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}
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if (this.hasLayer(layer)) {
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return this;
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}
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//If we have already clustered we'll need to add this one to a cluster
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if (this._unspiderfy) {
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this._unspiderfy();
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}
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this._addLayer(layer, this._maxZoom);
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//Work out what is visible
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var visibleLayer = layer,
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currentZoom = this._map.getZoom();
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if (layer.__parent) {
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while (visibleLayer.__parent._zoom >= currentZoom) {
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visibleLayer = visibleLayer.__parent;
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}
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}
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if (this._currentShownBounds.contains(visibleLayer.getLatLng())) {
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if (this.options.animateAddingMarkers) {
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this._animationAddLayer(layer, visibleLayer);
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} else {
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this._animationAddLayerNonAnimated(layer, visibleLayer);
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}
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}
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return this;
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},
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removeLayer: function (layer) {
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if (layer instanceof L.LayerGroup)
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{
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var array = [];
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for (var i in layer._layers) {
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array.push(layer._layers[i]);
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}
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return this.removeLayers(array);
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}
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//Non point layers
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if (!layer.getLatLng) {
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this._nonPointGroup.removeLayer(layer);
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return this;
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}
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if (!this._map) {
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if (!this._arraySplice(this._needsClustering, layer) && this.hasLayer(layer)) {
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this._needsRemoving.push(layer);
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}
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return this;
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}
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if (!layer.__parent) {
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return this;
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}
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if (this._unspiderfy) {
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this._unspiderfy();
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this._unspiderfyLayer(layer);
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}
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//Remove the marker from clusters
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this._removeLayer(layer, true);
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if (this._featureGroup.hasLayer(layer)) {
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this._featureGroup.removeLayer(layer);
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if (layer.setOpacity) {
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layer.setOpacity(1);
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}
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}
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return this;
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},
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//Takes an array of markers and adds them in bulk
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addLayers: function (layersArray) {
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var i, l, m,
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onMap = this._map,
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fg = this._featureGroup,
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npg = this._nonPointGroup;
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for (i = 0, l = layersArray.length; i < l; i++) {
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m = layersArray[i];
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//Not point data, can't be clustered
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if (!m.getLatLng) {
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npg.addLayer(m);
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continue;
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}
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if (this.hasLayer(m)) {
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continue;
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}
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if (!onMap) {
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this._needsClustering.push(m);
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continue;
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}
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this._addLayer(m, this._maxZoom);
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//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
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if (m.__parent) {
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if (m.__parent.getChildCount() === 2) {
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var markers = m.__parent.getAllChildMarkers(),
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otherMarker = markers[0] === m ? markers[1] : markers[0];
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fg.removeLayer(otherMarker);
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}
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}
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}
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if (onMap) {
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//Update the icons of all those visible clusters that were affected
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fg.eachLayer(function (c) {
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if (c instanceof L.MarkerCluster && c._iconNeedsUpdate) {
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c._updateIcon();
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}
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});
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this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, this._currentShownBounds);
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}
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return this;
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},
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//Takes an array of markers and removes them in bulk
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removeLayers: function (layersArray) {
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var i, l, m,
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fg = this._featureGroup,
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npg = this._nonPointGroup;
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if (!this._map) {
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for (i = 0, l = layersArray.length; i < l; i++) {
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m = layersArray[i];
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this._arraySplice(this._needsClustering, m);
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npg.removeLayer(m);
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}
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return this;
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}
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for (i = 0, l = layersArray.length; i < l; i++) {
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m = layersArray[i];
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if (!m.__parent) {
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npg.removeLayer(m);
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continue;
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}
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this._removeLayer(m, true, true);
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if (fg.hasLayer(m)) {
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fg.removeLayer(m);
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if (m.setOpacity) {
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m.setOpacity(1);
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}
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}
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}
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//Fix up the clusters and markers on the map
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this._topClusterLevel._recursivelyAddChildrenToMap(null, this._zoom, this._currentShownBounds);
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fg.eachLayer(function (c) {
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if (c instanceof L.MarkerCluster) {
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c._updateIcon();
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}
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});
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return this;
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},
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//Removes all layers from the MarkerClusterGroup
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clearLayers: function () {
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//Need our own special implementation as the LayerGroup one doesn't work for us
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//If we aren't on the map (yet), blow away the markers we know of
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if (!this._map) {
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this._needsClustering = [];
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delete this._gridClusters;
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delete this._gridUnclustered;
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}
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if (this._noanimationUnspiderfy) {
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this._noanimationUnspiderfy();
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}
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//Remove all the visible layers
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this._featureGroup.clearLayers();
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this._nonPointGroup.clearLayers();
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this.eachLayer(function (marker) {
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delete marker.__parent;
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});
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if (this._map) {
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//Reset _topClusterLevel and the DistanceGrids
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this._generateInitialClusters();
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}
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return this;
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},
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//Override FeatureGroup.getBounds as it doesn't work
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getBounds: function () {
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var bounds = new L.LatLngBounds();
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if (this._topClusterLevel) {
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bounds.extend(this._topClusterLevel._bounds);
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} else {
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for (var i = this._needsClustering.length - 1; i >= 0; i--) {
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bounds.extend(this._needsClustering[i].getLatLng());
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}
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}
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//TODO: Can remove this isValid test when leaflet 0.6 is released
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var nonPointBounds = this._nonPointGroup.getBounds();
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if (nonPointBounds.isValid()) {
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bounds.extend(nonPointBounds);
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}
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return bounds;
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},
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//Overrides LayerGroup.eachLayer
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eachLayer: function (method, context) {
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var markers = this._needsClustering.slice(),
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i;
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if (this._topClusterLevel) {
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this._topClusterLevel.getAllChildMarkers(markers);
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}
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for (i = markers.length - 1; i >= 0; i--) {
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method.call(context, markers[i]);
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}
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this._nonPointGroup.eachLayer(method, context);
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},
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//Returns true if the given layer is in this MarkerClusterGroup
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hasLayer: function (layer) {
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if (!layer) {
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return false;
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}
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var i, anArray = this._needsClustering;
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for (i = anArray.length - 1; i >= 0; i--) {
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if (anArray[i] === layer) {
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return true;
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}
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}
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anArray = this._needsRemoving;
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for (i = anArray.length - 1; i >= 0; i--) {
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if (anArray[i] === layer) {
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return false;
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}
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}
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return !!(layer.__parent && layer.__parent._group === this) || this._nonPointGroup.hasLayer(layer);
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},
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//Zoom down to show the given layer (spiderfying if necessary) then calls the callback
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zoomToShowLayer: function (layer, callback) {
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var showMarker = function () {
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if ((layer._icon || layer.__parent._icon) && !this._inZoomAnimation) {
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this._map.off('moveend', showMarker, this);
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this.off('animationend', showMarker, this);
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if (layer._icon) {
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callback();
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} else if (layer.__parent._icon) {
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var afterSpiderfy = function () {
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this.off('spiderfied', afterSpiderfy, this);
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callback();
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};
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this.on('spiderfied', afterSpiderfy, this);
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layer.__parent.spiderfy();
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}
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}
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};
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if (layer._icon) {
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callback();
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} else if (layer.__parent._zoom < this._map.getZoom()) {
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//Layer should be visible now but isn't on screen, just pan over to it
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this._map.on('moveend', showMarker, this);
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if (!layer._icon) {
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this._map.panTo(layer.getLatLng());
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}
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} else {
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this._map.on('moveend', showMarker, this);
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this.on('animationend', showMarker, this);
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this._map.setView(layer.getLatLng(), layer.__parent._zoom + 1);
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layer.__parent.zoomToBounds();
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}
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},
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//Overrides FeatureGroup.onAdd
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onAdd: function (map) {
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this._map = map;
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var i, l, layer;
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if (!isFinite(this._map.getMaxZoom())) {
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throw "Map has no maxZoom specified";
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}
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this._featureGroup.onAdd(map);
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this._nonPointGroup.onAdd(map);
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if (!this._gridClusters) {
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this._generateInitialClusters();
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}
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for (i = 0, l = this._needsRemoving.length; i < l; i++) {
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layer = this._needsRemoving[i];
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this._removeLayer(layer, true);
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||
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}
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this._needsRemoving = [];
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|
|
for (i = 0, l = this._needsClustering.length; i < l; i++) {
|
||
|
|
layer = this._needsClustering[i];
|
||
|
|
|
||
|
|
//If the layer doesn't have a getLatLng then we can't cluster it, so add it to our child featureGroup
|
||
|
|
if (!layer.getLatLng) {
|
||
|
|
this._featureGroup.addLayer(layer);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if (layer.__parent) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
this._addLayer(layer, 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) {
|
||
|
|
map.off('zoomend', this._zoomEnd, this);
|
||
|
|
map.off('moveend', this._moveEnd, this);
|
||
|
|
|
||
|
|
this._unbindEvents();
|
||
|
|
|
||
|
|
//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();
|
||
|
|
}
|
||
|
|
|
||
|
|
//Clean up all the layers we added to the map
|
||
|
|
this._featureGroup.onRemove(map);
|
||
|
|
this._nonPointGroup.onRemove(map);
|
||
|
|
|
||
|
|
this._featureGroup.clearLayers();
|
||
|
|
|
||
|
|
this._map = null;
|
||
|
|
},
|
||
|
|
|
||
|
|
getVisibleParent: function (marker) {
|
||
|
|
var vMarker = marker;
|
||
|
|
while (vMarker !== null && !vMarker._icon) {
|
||
|
|
vMarker = vMarker.__parent;
|
||
|
|
}
|
||
|
|
return vMarker;
|
||
|
|
},
|
||
|
|
|
||
|
|
//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 true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
//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,
|
||
|
|
fg = this._featureGroup,
|
||
|
|
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
|
||
|
|
fg.removeLayer(cluster);
|
||
|
|
if (!dontUpdateMap) {
|
||
|
|
fg.addLayer(otherMarker);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
cluster._recalculateBounds();
|
||
|
|
if (!dontUpdateMap || !cluster._icon) {
|
||
|
|
cluster._updateIcon();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
cluster = cluster.__parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
delete marker.__parent;
|
||
|
|
},
|
||
|
|
|
||
|
|
_propagateEvent: function (e) {
|
||
|
|
if (e.layer instanceof L.MarkerCluster) {
|
||
|
|
e.type = 'cluster' + e.type;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.fire(e.type, 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 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', this._zoomOrSpiderfy, this);
|
||
|
|
}
|
||
|
|
|
||
|
|
//Show convex hull (boundary) polygon on mouse over
|
||
|
|
if (showCoverageOnHover) {
|
||
|
|
this.on('clustermouseover', this._showCoverage, this);
|
||
|
|
this.on('clustermouseout', this._hideCoverage, this);
|
||
|
|
map.on('zoomend', this._hideCoverage, this);
|
||
|
|
map.on('layerremove', this._hideCoverageOnRemove, this);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_zoomOrSpiderfy: function (e) {
|
||
|
|
var map = this._map;
|
||
|
|
if (map.getMaxZoom() === map.getZoom()) {
|
||
|
|
if (this.options.spiderfyOnMaxZoom) {
|
||
|
|
e.layer.spiderfy();
|
||
|
|
}
|
||
|
|
} else if (this.options.zoomToBoundsOnClick) {
|
||
|
|
e.layer.zoomToBounds();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_showCoverage: function (e) {
|
||
|
|
var map = this._map;
|
||
|
|
if (this._inZoomAnimation) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (this._shownPolygon) {
|
||
|
|
map.removeLayer(this._shownPolygon);
|
||
|
|
}
|
||
|
|
if (e.layer.getChildCount() > 2 && e.layer !== this._spiderfied) {
|
||
|
|
this._shownPolygon = new L.Polygon(e.layer.getConvexHull(), this.options.polygonOptions);
|
||
|
|
map.addLayer(this._shownPolygon);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_hideCoverage: function () {
|
||
|
|
if (this._shownPolygon) {
|
||
|
|
this._map.removeLayer(this._shownPolygon);
|
||
|
|
this._shownPolygon = null;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_hideCoverageOnRemove: function (e) {
|
||
|
|
if (e.layer === this) {
|
||
|
|
this._hideCoverage();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_unbindEvents: function () {
|
||
|
|
var spiderfyOnMaxZoom = this.options.spiderfyOnMaxZoom,
|
||
|
|
showCoverageOnHover = this.options.showCoverageOnHover,
|
||
|
|
zoomToBoundsOnClick = this.options.zoomToBoundsOnClick,
|
||
|
|
map = this._map;
|
||
|
|
|
||
|
|
if (spiderfyOnMaxZoom || zoomToBoundsOnClick) {
|
||
|
|
this.off('clusterclick', this._zoomOrSpiderfy, this);
|
||
|
|
}
|
||
|
|
if (showCoverageOnHover) {
|
||
|
|
this.off('clustermouseover', this._showCoverage, this);
|
||
|
|
this.off('clustermouseout', this._hideCoverage, this);
|
||
|
|
map.off('zoomend', this._hideCoverage, this);
|
||
|
|
map.off('layerremove', this._hideCoverageOnRemove, 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;
|
||
|
|
|
||
|
|
if (this.options.singleMarkerMode) {
|
||
|
|
layer.options.icon = this.options.iconCreateFunction({
|
||
|
|
getChildCount: function () {
|
||
|
|
return 1;
|
||
|
|
},
|
||
|
|
getAllChildMarkers: function () {
|
||
|
|
return [layer];
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
//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) {
|
||
|
|
var parent = closest.__parent;
|
||
|
|
if (parent) {
|
||
|
|
this._removeLayer(closest, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
//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 () {
|
||
|
|
if (!this.options.removeOutsideVisibleBounds) {
|
||
|
|
return this.getBounds();
|
||
|
|
}
|
||
|
|
|
||
|
|
var map = this._map,
|
||
|
|
bounds = map.getBounds(),
|
||
|
|
sw = bounds._southWest,
|
||
|
|
ne = bounds._northEast,
|
||
|
|
latDiff = L.Browser.mobile ? 0 : Math.abs(sw.lat - ne.lat),
|
||
|
|
lngDiff = L.Browser.mobile ? 0 : Math.abs(sw.lng - ne.lng);
|
||
|
|
|
||
|
|
return new L.LatLngBounds(
|
||
|
|
new L.LatLng(sw.lat - latDiff, sw.lng - lngDiff, true),
|
||
|
|
new L.LatLng(ne.lat + latDiff, ne.lng + lngDiff, true));
|
||
|
|
},
|
||
|
|
|
||
|
|
//Shared animation code
|
||
|
|
_animationAddLayerNonAnimated: function (layer, newCluster) {
|
||
|
|
if (newCluster === layer) {
|
||
|
|
this._featureGroup.addLayer(layer);
|
||
|
|
} else if (newCluster._childCount === 2) {
|
||
|
|
newCluster._addToMap();
|
||
|
|
|
||
|
|
var markers = newCluster.getAllChildMarkers();
|
||
|
|
this._featureGroup.removeLayer(markers[0]);
|
||
|
|
this._featureGroup.removeLayer(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(),
|
||
|
|
fg = this._featureGroup,
|
||
|
|
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 (!bounds.contains(startPos)) {
|
||
|
|
startPos = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (c._isSingleParent() && previousZoomLevel + 1 === newZoomLevel) { //Immediately add the new child and remove us
|
||
|
|
fg.removeLayer(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)) {
|
||
|
|
fg.removeLayer(m);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
this._forceLayout();
|
||
|
|
|
||
|
|
//Update opacities
|
||
|
|
me._topClusterLevel._recursivelyBecomeVisible(bounds, newZoomLevel);
|
||
|
|
//TODO Maybe? Update markers in _recursivelyBecomeVisible
|
||
|
|
fg.eachLayer(function (n) {
|
||
|
|
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) {
|
||
|
|
fg.removeLayer(c);
|
||
|
|
c.setOpacity(1);
|
||
|
|
});
|
||
|
|
|
||
|
|
me._animationEnd();
|
||
|
|
}, 200);
|
||
|
|
},
|
||
|
|
|
||
|
|
_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);
|
||
|
|
} else {
|
||
|
|
cluster._recursively(bounds, newZoomLevel, 0, function (c) {
|
||
|
|
c._recursivelyRemoveChildrenFromMap(bounds, previousZoomLevel + 1);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
me._animationEnd();
|
||
|
|
}, 200);
|
||
|
|
},
|
||
|
|
_animationAddLayer: function (layer, newCluster) {
|
||
|
|
var me = this,
|
||
|
|
fg = this._featureGroup;
|
||
|
|
|
||
|
|
fg.addLayer(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 () {
|
||
|
|
fg.removeLayer(layer);
|
||
|
|
layer.setOpacity(1);
|
||
|
|
|
||
|
|
me._animationEnd();
|
||
|
|
}, 200);
|
||
|
|
|
||
|
|
} 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.markerClusterGroup = function (options) {
|
||
|
|
return new L.MarkerClusterGroup(options);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
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);
|
||
|
|
},
|
||
|
|
|
||
|
|
getBounds: function () {
|
||
|
|
var bounds = new L.LatLngBounds();
|
||
|
|
bounds.extend(this._bounds);
|
||
|
|
return 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);
|
||
|
|
}
|
||
|
|
this._group._featureGroup.addLayer(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);
|
||
|
|
if (nm.setOpacity) {
|
||
|
|
nm.setOpacity(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
c._group._featureGroup.addLayer(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)) {
|
||
|
|
c._group._featureGroup.removeLayer(m);
|
||
|
|
if (m.setOpacity) {
|
||
|
|
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)) {
|
||
|
|
c._group._featureGroup.removeLayer(m);
|
||
|
|
if (m.setOpacity) {
|
||
|
|
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) {
|
||
|
|
row = grid[i];
|
||
|
|
|
||
|
|
for (j in row) {
|
||
|
|
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._group.options.spiderfyDistanceMultiplier * 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._group.options.spiderfyDistanceMultiplier * this._spiralLengthStart,
|
||
|
|
separation = this._group.options.spiderfyDistanceMultiplier * this._spiralFootSeparation,
|
||
|
|
lengthFactor = this._group.options.spiderfyDistanceMultiplier * this._spiralLengthFactor,
|
||
|
|
angle = 0,
|
||
|
|
res = [],
|
||
|
|
i;
|
||
|
|
|
||
|
|
res.length = count;
|
||
|
|
|
||
|
|
for (i = count - 1; i >= 0; i--) {
|
||
|
|
angle += separation / 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 * lengthFactor / angle;
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
},
|
||
|
|
|
||
|
|
_noanimationUnspiderfy: function () {
|
||
|
|
var group = this._group,
|
||
|
|
map = group._map,
|
||
|
|
fg = group._featureGroup,
|
||
|
|
childMarkers = this.getAllChildMarkers(),
|
||
|
|
m, i;
|
||
|
|
|
||
|
|
this.setOpacity(1);
|
||
|
|
for (i = childMarkers.length - 1; i >= 0; i--) {
|
||
|
|
m = childMarkers[i];
|
||
|
|
|
||
|
|
fg.removeLayer(m);
|
||
|
|
|
||
|
|
if (m._preSpiderfyLatlng) {
|
||
|
|
m.setLatLng(m._preSpiderfyLatlng);
|
||
|
|
delete m._preSpiderfyLatlng;
|
||
|
|
}
|
||
|
|
if (m.setZIndexOffset) {
|
||
|
|
m.setZIndexOffset(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m._spiderLeg) {
|
||
|
|
map.removeLayer(m._spiderLeg);
|
||
|
|
delete m._spiderLeg;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
L.MarkerCluster.include(!L.DomUtil.TRANSITION ? {
|
||
|
|
//Non Animated versions of everything
|
||
|
|
_animationSpiderfy: function (childMarkers, positions) {
|
||
|
|
var group = this._group,
|
||
|
|
map = group._map,
|
||
|
|
fg = group._featureGroup,
|
||
|
|
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);
|
||
|
|
if (m.setZIndexOffset) {
|
||
|
|
m.setZIndexOffset(1000000); //Make these appear on top of EVERYTHING
|
||
|
|
}
|
||
|
|
|
||
|
|
fg.addLayer(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 () {
|
||
|
|
this._noanimationUnspiderfy();
|
||
|
|
}
|
||
|
|
} : {
|
||
|
|
//Animated versions here
|
||
|
|
SVG_ANIMATION: (function () {
|
||
|
|
return document.createElementNS('http://www.w3.org/2000/svg', 'animate').toString().indexOf('SVGAnimate') > -1;
|
||
|
|
}()),
|
||
|
|
|
||
|
|
_animationSpiderfy: function (childMarkers, positions) {
|
||
|
|
var me = this,
|
||
|
|
group = this._group,
|
||
|
|
map = group._map,
|
||
|
|
fg = group._featureGroup,
|
||
|
|
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];
|
||
|
|
|
||
|
|
//If it is a marker, add it now and we'll animate it out
|
||
|
|
if (m.setOpacity) {
|
||
|
|
m.setZIndexOffset(1000000); //Make these appear on top of EVERYTHING
|
||
|
|
m.setOpacity(0);
|
||
|
|
|
||
|
|
fg.addLayer(m);
|
||
|
|
|
||
|
|
m._setPos(thisLayerPos);
|
||
|
|
} else {
|
||
|
|
//Vectors just get immediately added
|
||
|
|
fg.addLayer(m);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
if (m.setOpacity) {
|
||
|
|
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 || !this.SVG_ANIMATION) {
|
||
|
|
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');
|
||
|
|
}, 200);
|
||
|
|
},
|
||
|
|
|
||
|
|
_animationUnspiderfy: function (zoomDetails) {
|
||
|
|
var group = this._group,
|
||
|
|
map = group._map,
|
||
|
|
fg = group._featureGroup,
|
||
|
|
thisLayerPos = zoomDetails ? map._latLngToNewLayerPoint(this._latlng, zoomDetails.zoom, zoomDetails.center) : map.latLngToLayerPoint(this._latlng),
|
||
|
|
childMarkers = this.getAllChildMarkers(),
|
||
|
|
svg = L.Path.SVG && this.SVG_ANIMATION,
|
||
|
|
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];
|
||
|
|
|
||
|
|
//Marker was added to us after we were spidified
|
||
|
|
if (!m._preSpiderfyLatlng) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
//Fix up the location to the real one
|
||
|
|
m.setLatLng(m._preSpiderfyLatlng);
|
||
|
|
delete m._preSpiderfyLatlng;
|
||
|
|
//Hack override the location to be our center
|
||
|
|
if (m.setOpacity) {
|
||
|
|
m._setPos(thisLayerPos);
|
||
|
|
m.setOpacity(0);
|
||
|
|
} else {
|
||
|
|
fg.removeLayer(m);
|
||
|
|
}
|
||
|
|
|
||
|
|
//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;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if (m.setOpacity) {
|
||
|
|
m.setOpacity(1);
|
||
|
|
m.setZIndexOffset(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (stillThereChildCount > 1) {
|
||
|
|
fg.removeLayer(m);
|
||
|
|
}
|
||
|
|
|
||
|
|
map.removeLayer(m._spiderLeg);
|
||
|
|
delete m._spiderLeg;
|
||
|
|
}
|
||
|
|
group._animationEnd();
|
||
|
|
}, 200);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_noanimationUnspiderfy: function () {
|
||
|
|
if (this._spiderfied) {
|
||
|
|
this._spiderfied._noanimationUnspiderfy();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
//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) {
|
||
|
|
this._featureGroup.removeLayer(layer);
|
||
|
|
|
||
|
|
layer.setOpacity(1);
|
||
|
|
//Position will be fixed up immediately in _animationUnspiderfy
|
||
|
|
layer.setZIndexOffset(0);
|
||
|
|
|
||
|
|
this._map.removeLayer(layer._spiderLeg);
|
||
|
|
delete layer._spiderLeg;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
}(window, document));
|