62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
goog.require('ol.Attribution');
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goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.control');
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goog.require('ol.extent');
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goog.require('ol.layer.Tile');
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goog.require('ol.proj');
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goog.require('ol.source.OSM');
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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.proj.get('EPSG:3857');
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var projectionExtent = projection.getExtent();
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var size = ol.extent.getWidth(projectionExtent) / 256;
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var resolutions = new Array(14);
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var matrixIds = new Array(14);
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for (var z = 0; z < 14; ++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] = 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.Tile({
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source: new ol.source.OSM(),
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opacity: 0.7
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}),
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new ol.layer.Tile({
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opacity: 0.7,
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source: new ol.source.WMTS({
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attributions: 'Tiles © <a href="http://services.arcgisonline.com/arcgis/rest/' +
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'services/Demographics/USA_Population_Density/MapServer/">ArcGIS</a>',
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url: 'http://services.arcgisonline.com/arcgis/rest/' +
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'services/Demographics/USA_Population_Density/MapServer/WMTS/',
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layer: '0',
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matrixSet: 'EPSG:3857',
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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: ol.extent.getTopLeft(projectionExtent),
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resolutions: resolutions,
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matrixIds: matrixIds
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}),
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style: 'default',
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wrapX: true
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})
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})
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],
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target: 'map',
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controls: ol.control.defaults({
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attributionOptions: /** @type {olx.control.AttributionOptions} */ ({
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collapsible: false
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})
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}),
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view: new ol.View({
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center: [-11158582, 4813697],
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zoom: 4
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})
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});
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