Add #toGeoJSON to various layer types (#712)
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@ -56,6 +56,7 @@
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<!-- /layer -->
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<script type="text/javascript" src="suites/layer/FeatureGroupSpec.js"></script>
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<script type="text/javascript" src="suites/layer/GeoJSONSpec.js"></script>
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<script type="text/javascript" src="suites/layer/LayerGroupSpec.js"></script>
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<script type="text/javascript" src="suites/layer/TileLayerSpec.js"></script>
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86
spec/suites/layer/GeoJSONSpec.js
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86
spec/suites/layer/GeoJSONSpec.js
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@ -0,0 +1,86 @@
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describe("L.Marker#toGeoJSON", function () {
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it("returns a Point object", function () {
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var marker = new L.Marker([10, 20]);
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expect(marker.toGeoJSON()).toEqual({
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type: 'Point',
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coordinates: [20, 10]
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});
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});
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});
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describe("L.Polyline#toGeoJSON", function () {
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it("returns a LineString object", function () {
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var polyline = new L.Polyline([[10, 20], [2, 5]]);
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expect(polyline.toGeoJSON()).toEqual({
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type: 'LineString',
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coordinates: [[20, 10], [5, 2]]
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});
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});
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});
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describe("L.MultiPolyline#toGeoJSON", function () {
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it("returns a MultiLineString object", function () {
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var multiPolyline = new L.MultiPolyline([[[10, 20], [2, 5]], [[1, 2], [3, 4]]]);
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expect(multiPolyline.toGeoJSON()).toEqual({
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type: 'MultiLineString',
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coordinates: [
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[[20, 10], [5, 2]],
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[[2, 1], [4, 3]]
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]
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});
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});
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});
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describe("L.Polygon#toGeoJSON", function () {
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it("returns a Polygon object (no holes)", function () {
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var polygon = new L.Polygon([[1, 2], [3, 4], [5, 6]]);
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expect(polygon.toGeoJSON()).toEqual({
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type: 'Polygon',
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coordinates: [[[2, 1], [4, 3], [6, 5], [2, 1]]]
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});
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});
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it("returns a Polygon object (with holes)", function () {
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var polygon = new L.Polygon([[[1, 2], [3, 4], [5, 6]], [[7, 8], [9, 10], [11, 12]]]);
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expect(polygon.toGeoJSON()).toEqual({
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type: 'Polygon',
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coordinates: [
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[[2, 1], [4, 3], [6, 5], [2, 1]],
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[[8, 7], [10, 9], [12, 11], [8, 7]]
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]
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});
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});
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});
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describe("L.MultiPolygon#toGeoJSON", function () {
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it("returns a MultiPolygon object", function () {
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var multiPolygon = new L.MultiPolygon([[[1, 2], [3, 4], [5, 6]]]);
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expect(multiPolygon.toGeoJSON()).toEqual({
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type: 'MultiPolygon',
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coordinates: [
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[[[2, 1], [4, 3], [6, 5], [2, 1]]]
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]
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});
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});
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});
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describe("L.LayerGroup#toGeoJSON", function () {
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it("returns a GeometryCollection object", function () {
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var marker = new L.Marker([10, 20]),
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polyline = new L.Polyline([[10, 20], [2, 5]]),
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layerGroup = new L.LayerGroup([marker, polyline]);
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expect(layerGroup.toGeoJSON()).toEqual({
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type: 'GeometryCollection',
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geometries: [marker.toGeoJSON(), polyline.toGeoJSON()]
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});
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});
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it("omits layers which do not implement toGeoJSON", function () {
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var tileLayer = new L.TileLayer(),
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layerGroup = new L.LayerGroup([tileLayer]);
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expect(layerGroup.toGeoJSON()).toEqual({
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type: 'GeometryCollection',
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geometries: []
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});
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});
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});
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@ -147,6 +147,102 @@ L.extend(L.GeoJSON, {
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}
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});
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L.extend(L.GeoJSON, {
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latLngToCoords: function (latLng) {
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return [latLng.lng, latLng.lat];
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},
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latLngsToCoords: function (latLngs) {
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var coords = [],
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i, len;
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for (i = 0, len = latLngs.length; i < len; i++) {
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coords.push(L.GeoJSON.latLngToCoords(latLngs[i]));
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}
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return coords;
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}
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});
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L.Marker.include({
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toGeoJSON: function () {
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return {
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type: 'Point',
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coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
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};
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}
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});
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L.Polyline.include({
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toGeoJSON: function () {
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return {
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type: 'LineString',
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coordinates: L.GeoJSON.latLngsToCoords(this.getLatLngs())
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};
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}
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});
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L.Polygon.include({
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toGeoJSON: function () {
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var coords = [L.GeoJSON.latLngsToCoords(this.getLatLngs())],
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i, len, hole;
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coords[0].push(coords[0][0]);
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if (this._holes) {
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for (i = 0, len = this._holes.length; i < len; i++) {
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hole = L.GeoJSON.latLngsToCoords(this._holes[i]);
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hole.push(hole[0]);
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coords.push(hole);
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}
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}
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return {
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type: 'Polygon',
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coordinates: coords
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};
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}
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});
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(function () {
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function includeMulti(Klass, type) {
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Klass.include({
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toGeoJSON: function () {
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var coords = [];
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this.eachLayer(function (layer) {
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coords.push(layer.toGeoJSON().coordinates);
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});
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return {
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type: type,
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coordinates: coords
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};
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}
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});
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}
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includeMulti(L.MultiPolyline, 'MultiLineString');
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includeMulti(L.MultiPolygon, 'MultiPolygon');
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}());
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L.LayerGroup.include({
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toGeoJSON: function () {
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var geoms = [];
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this.eachLayer(function (layer) {
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if (layer.toGeoJSON) {
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geoms.push(layer.toGeoJSON());
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}
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});
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return {
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type: 'GeometryCollection',
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geometries: geoms
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};
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}
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});
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L.geoJson = function (geojson, options) {
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return new L.GeoJSON(geojson, options);
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};
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