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How to make your markers move with Leaflet.js
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| L.AnimatedMarker = L.Marker.extend({ | |
| options: { | |
| // meters | |
| distance: 200, | |
| // ms | |
| interval: 1000, | |
| // animate on add? | |
| autoStart: true, | |
| // callback onend | |
| onEnd: function(){}, | |
| clickable: false | |
| }, | |
| initialize: function (latlngs, options) { | |
| this.setLine(latlngs); | |
| L.Marker.prototype.initialize.call(this, latlngs[0], options); | |
| }, | |
| // Breaks the line up into tiny chunks (see options) ONLY if CSS3 animations | |
| // are not supported. | |
| _chunk: function(latlngs) { | |
| var i, | |
| len = latlngs.length, | |
| chunkedLatLngs = []; | |
| for (i=1;i<len;i++) { | |
| var cur = latlngs[i-1], | |
| next = latlngs[i], | |
| dist = cur.distanceTo(next), | |
| factor = this.options.distance / dist, | |
| dLat = factor * (next.lat - cur.lat), | |
| dLng = factor * (next.lng - cur.lng); | |
| if (dist > this.options.distance) { | |
| while (dist > this.options.distance) { | |
| cur = new L.LatLng(cur.lat + dLat, cur.lng + dLng); | |
| dist = cur.distanceTo(next); | |
| chunkedLatLngs.push(cur); | |
| } | |
| } else { | |
| chunkedLatLngs.push(cur); | |
| } | |
| } | |
| chunkedLatLngs.push(latlngs[len-1]); | |
| return chunkedLatLngs; | |
| }, | |
| onAdd: function (map) { | |
| L.Marker.prototype.onAdd.call(this, map); | |
| // Start animating when added to the map | |
| if (this.options.autoStart) { | |
| this.start(); | |
| } | |
| }, | |
| animate: function() { | |
| var self = this, | |
| len = this._latlngs.length, | |
| speed = this.options.interval; | |
| // Normalize the transition speed from vertex to vertex | |
| if (this._i < len && this.i > 0) { | |
| speed = this._latlngs[this._i-1].distanceTo(this._latlngs[this._i]) / this.options.distance * this.options.interval; | |
| } | |
| // Only if CSS3 transitions are supported | |
| if (L.DomUtil.TRANSITION) { | |
| if (this._icon) { this._icon.style[L.DomUtil.TRANSITION] = ('all ' + speed + 'ms linear'); } | |
| if (this._shadow) { this._shadow.style[L.DomUtil.TRANSITION] = 'all ' + speed + 'ms linear'; } | |
| } | |
| // Move to the next vertex | |
| this.setLatLng(this._latlngs[this._i]); | |
| this._i++; | |
| // Queue up the animation to the next next vertex | |
| this._tid = setTimeout(function(){ | |
| if (self._i === len) { | |
| self.options.onEnd.apply(self, Array.prototype.slice.call(arguments)); | |
| } else { | |
| self.animate(); | |
| } | |
| }, speed); | |
| }, | |
| // Start the animation | |
| start: function() { | |
| this.animate(); | |
| }, | |
| // Stop the animation in place | |
| stop: function() { | |
| if (this._tid) { | |
| clearTimeout(this._tid); | |
| } | |
| }, | |
| setLine: function(latlngs){ | |
| if (L.DomUtil.TRANSITION) { | |
| // No need to to check up the line if we can animate using CSS3 | |
| this._latlngs = latlngs; | |
| } else { | |
| // Chunk up the lines into options.distance bits | |
| this._latlngs = this._chunk(latlngs); | |
| this.options.distance = 10; | |
| this.options.interval = 30; | |
| } | |
| this._i = 0; | |
| } | |
| }); | |
| L.animatedMarker = function (latlngs, options) { | |
| return new L.AnimatedMarker(latlngs, options); | |
| }; |
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| <html> | |
| <head> | |
| <title>How to make your markers move with Leaflet.js</title> | |
| <meta charset="utf-8"> | |
| <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" /> | |
| <script src="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js"></script> | |
| <script src="AnimatedMarker.js"></script> | |
| <style type="text/css"> | |
| html, body, #map{ | |
| height: 100%; | |
| padding: 0; | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></map> | |
| <script type="text/javascript"> | |
| var map = L.map('map').setView([40.68576, -73.94149], 18); | |
| L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {attribution: 'OSM'}) | |
| .addTo(map); | |
| var line = L.polyline([[40.68510, -73.94136], [40.68576, -73.94149], [40.68649, -73.94165]]); | |
| map.addLayer(line); | |
| var animatedMarker = L.animatedMarker(line.getLatLngs()); | |
| map.addLayer(animatedMarker); | |
| </script> | |
| </body> | |
| </html> |
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Hello,
Why with more then 100 coordinates it does not work?