projects / mediagoblin.git / blame
| Commit | Line | Data |
|---|---|---|
| c5ba5b04 JW |
1 | \r |
| 2 | L.GeoJSON = L.LayerGroup.extend({\r | |
| 3 | includes: L.Mixin.Events,\r | |
| 4 | \r | |
| 5 | initialize: function(geojson, options) {\r | |
| 6 | L.Util.setOptions(this, options);\r | |
| 7 | this._geojson = geojson;\r | |
| 8 | this._layers = {};\r | |
| 9 | \r | |
| 10 | if (geojson) {\r | |
| 11 | this.addGeoJSON(geojson);\r | |
| 12 | }\r | |
| 13 | },\r | |
| 14 | \r | |
| 15 | addGeoJSON: function(geojson) {\r | |
| 16 | if (geojson.features) {\r | |
| 17 | for (var i = 0, len = geojson.features.length; i < len; i++) {\r | |
| 18 | this.addGeoJSON(geojson.features[i]);\r | |
| 19 | }\r | |
| 20 | return;\r | |
| 21 | }\r | |
| 22 | \r | |
| 23 | var isFeature = (geojson.type == 'Feature'),\r | |
| 24 | geometry = (isFeature ? geojson.geometry : geojson),\r | |
| 25 | layer = L.GeoJSON.geometryToLayer(geometry, this.options.pointToLayer);\r | |
| 26 | \r | |
| 27 | this.fire('featureparse', {\r | |
| 28 | layer: layer, \r | |
| 29 | properties: geojson.properties,\r | |
| 30 | geometryType: geometry.type,\r | |
| 31 | bbox: geojson.bbox,\r | |
| 32 | id: geojson.id\r | |
| 33 | });\r | |
| 34 | \r | |
| 35 | this.addLayer(layer);\r | |
| 36 | }\r | |
| 37 | });\r | |
| 38 | \r | |
| 39 | L.Util.extend(L.GeoJSON, {\r | |
| 40 | geometryToLayer: function(geometry, pointToLayer) {\r | |
| 41 | var coords = geometry.coordinates, \r | |
| 42 | latlng, latlngs, \r | |
| 43 | i, len, \r | |
| 44 | layer, \r | |
| 45 | layers = [];\r | |
| 46 | \r | |
| 47 | switch (geometry.type) {\r | |
| 48 | case 'Point':\r | |
| 49 | latlng = this.coordsToLatLng(coords);\r | |
| 50 | return pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng);\r | |
| 51 | \r | |
| 52 | case 'MultiPoint':\r | |
| 53 | for (i = 0, len = coords.length; i < len; i++) {\r | |
| 54 | latlng = this.coordsToLatLng(coords[i]);\r | |
| 55 | layer = pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng);\r | |
| 56 | layers.push(layer);\r | |
| 57 | }\r | |
| 58 | return new L.FeatureGroup(layers);\r | |
| 59 | \r | |
| 60 | case 'LineString':\r | |
| 61 | latlngs = this.coordsToLatLngs(coords);\r | |
| 62 | return new L.Polyline(latlngs);\r | |
| 63 | \r | |
| 64 | case 'Polygon':\r | |
| 65 | latlngs = this.coordsToLatLngs(coords, 1);\r | |
| 66 | return new L.Polygon(latlngs);\r | |
| 67 | \r | |
| 68 | case 'MultiLineString':\r | |
| 69 | latlngs = this.coordsToLatLngs(coords, 1);\r | |
| 70 | return new L.MultiPolyline(latlngs);\r | |
| 71 | \r | |
| 72 | case "MultiPolygon":\r | |
| 73 | latlngs = this.coordsToLatLngs(coords, 2);\r | |
| 74 | return new L.MultiPolygon(latlngs);\r | |
| 75 | \r | |
| 76 | case "GeometryCollection":\r | |
| 77 | for (i = 0, len = geometry.geometries.length; i < len; i++) {\r | |
| 78 | layer = this.geometryToLayer(geometry.geometries[i]);\r | |
| 79 | layers.push(layer);\r | |
| 80 | }\r | |
| 81 | return new L.FeatureGroup(layers);\r | |
| 82 | \r | |
| 83 | default:\r | |
| 84 | throw new Error('Invalid GeoJSON object.');\r | |
| 85 | }\r | |
| 86 | },\r | |
| 87 | \r | |
| 88 | coordsToLatLng: function(/*Array*/ coords, /*Boolean*/ reverse)/*: LatLng*/ {\r | |
| 89 | var lat = parseFloat(coords[reverse ? 0 : 1]),\r | |
| 90 | lng = parseFloat(coords[reverse ? 1 : 0]);\r | |
| 91 | return new L.LatLng(lat, lng);\r | |
| 92 | },\r | |
| 93 | \r | |
| 94 | coordsToLatLngs: function(/*Array*/ coords, /*Number*/ levelsDeep, /*Boolean*/ reverse)/*: Array*/ {\r | |
| 95 | var latlng, latlngs = [],\r | |
| 96 | i, len = coords.length;\r | |
| 97 | \r | |
| 98 | for (i = 0; i < len; i++) {\r | |
| 99 | latlng = levelsDeep ? \r | |
| 100 | this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) : \r | |
| 101 | this.coordsToLatLng(coords[i], reverse);\r | |
| 102 | latlngs.push(latlng);\r | |
| 103 | }\r | |
| 104 | return latlngs;\r | |
| 105 | }\r | |
| 106 | }); |