1110da37e1
Previously, ol.geom.Polygon was a transitive dependency of ol.proj (since ol.proj requires ol.sphere.NORMAL, and all spheres were capable of generating circular polygons). Instead, ol.proj should be lower-level. Since it deals only with coordinate arrays, it shouldn't depend on all of the geometry code. By adding a static `circular` function to `ol.geom.Polygon`, the dependency tree makes more sense. If you want to create a polygon that approximates a circle on a sphere, you require `ol.geom.Polygon` and `ol.Sphere` (or one of the constants). This makes room for geometries to have a `transform` method that takes projection-like arguments (meaning that `ol.geom.Geometry` will require `ol.proj`).
46 lines
1.0 KiB
JavaScript
46 lines
1.0 KiB
JavaScript
goog.require('ol.Feature');
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goog.require('ol.Map');
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goog.require('ol.View2D');
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goog.require('ol.geom.Polygon');
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goog.require('ol.layer.Tile');
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goog.require('ol.layer.Vector');
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goog.require('ol.source.TileWMS');
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goog.require('ol.source.Vector');
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goog.require('ol.sphere.WGS84');
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var vectorSource = new ol.source.Vector();
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var map = new ol.Map({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.TileWMS({
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url: 'http://vmap0.tiles.osgeo.org/wms/vmap0',
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params: {
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'VERSION': '1.1.1',
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'LAYERS': 'basic',
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'FORMAT': 'image/jpeg'
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}
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})
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}),
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new ol.layer.Vector({
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source: vectorSource
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})
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],
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renderer: 'canvas',
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target: 'map',
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view: new ol.View2D({
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projection: 'EPSG:4326',
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center: [0, 0],
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zoom: 2
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})
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});
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var radius = 800000;
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for (var x = -180; x < 180; x += 30) {
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for (var y = -90; y < 90; y += 30) {
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var circle = ol.geom.Polygon.circular(ol.sphere.WGS84, [x, y], radius, 64);
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vectorSource.addFeature(new ol.Feature(circle));
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}
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}
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