55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
goog.require('ol.Coordinate');
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goog.require('ol.Extent');
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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.layer.TileLayer');
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goog.require('ol.projection');
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goog.require('ol.source.OpenStreetMap');
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goog.require('ol.source.WMTS');
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goog.require('ol.tilegrid.WMTS');
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var projection = ol.projection.get('EPSG:900913');
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var projectionExtent = projection.getExtent();
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var size = projectionExtent.getWidth() / 256;
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var resolutions = new Array(26);
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var matrixIds = new Array(26);
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for (var z = 0; z < 26; ++z) {
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// generate resolutions and matrixIds arrays for this WMTS
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resolutions[z] = size / Math.pow(2, z);
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matrixIds[z] = 'EPSG:900913:' + z;
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}
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var map = new ol.Map({
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layers: [
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new ol.layer.TileLayer({
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source: new ol.source.OpenStreetMap(),
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opacity: 0.7
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}),
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new ol.layer.TileLayer({
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source: new ol.source.WMTS({
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url: 'http://v2.suite.opengeo.org/geoserver/gwc/service/wmts/',
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layer: 'medford:buildings',
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matrixSet: 'EPSG:900913',
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format: 'image/png',
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projection: projection,
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tileGrid: new ol.tilegrid.WMTS({
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origin: projectionExtent.getTopLeft(),
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resolutions: resolutions,
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matrixIds: matrixIds
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}),
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style: '_null',
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crossOrigin: null, // FIXME: this should be the default
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extent: new ol.Extent(-13682835, 5204068, -13667473, 5221690)
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})
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})
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],
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renderer: ol.RendererHint.CANVAS,
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target: 'map',
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view: new ol.View2D({
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center: new ol.Coordinate(-13677832, 5213272),
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zoom: 13
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})
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});
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