19aeb04141
Thanks @marcjansen for spotting this. To make the epsg-4326 example work, I also had to change the WMS version to 1.1.1.
53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
goog.require('ol.Collection');
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goog.require('ol.Coordinate');
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goog.require('ol.Map');
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goog.require('ol.RendererHint');
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goog.require('ol.View2D');
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goog.require('ol.control.ScaleLineUnits');
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goog.require('ol.layer.TileLayer');
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goog.require('ol.projection');
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goog.require('ol.source.TiledWMS');
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var epsg4326 = ol.projection.getFromCode('EPSG:4326');
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// We give the single image source a set of resolutions. This prevents the
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// source from requesting images of arbitrary resolutions.
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var projectionExtent = epsg4326.getExtent();
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var maxResolution = Math.max(
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projectionExtent.maxX - projectionExtent.minX,
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projectionExtent.maxY - projectionExtent.minY) / 256;
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var resolutions = new Array(10);
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for (var i = 0; i < 10; ++i) {
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resolutions[i] = maxResolution / Math.pow(2.0, i);
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}
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var layers = new ol.Collection([
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new ol.layer.TileLayer({
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source: new ol.source.TiledWMS({
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url: 'http://vmap0.tiles.osgeo.org/wms/vmap0',
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crossOrigin: null,
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version: '1.1.1',
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params: {
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'LAYERS': 'basic',
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'FORMAT': 'image/jpeg'
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},
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projection: epsg4326
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})
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})
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]);
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var map = new ol.Map({
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layers: layers,
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// The OSgeo server does not set cross origin headers, so we cannot use WebGL
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renderers: [ol.RendererHint.CANVAS, ol.RendererHint.DOM],
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scaleLineControl: true,
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scaleLineUnits: ol.control.ScaleLineUnits.DEGREES,
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target: 'map',
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view: new ol.View2D({
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projection: epsg4326,
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center: new ol.Coordinate(0, 0),
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zoom: 2
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})
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});
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