61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import View from '../src/ol/View.js';
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import {defaults as defaultControls} from '../src/ol/control.js';
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import {getWidth, getTopLeft} from '../src/ol/extent.js';
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import TileLayer from '../src/ol/layer/Tile.js';
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import {get as getProjection} from '../src/ol/proj.js';
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import OSM from '../src/ol/source/OSM.js';
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import WMTS from '../src/ol/source/WMTS.js';
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import WMTSTileGrid from '../src/ol/tilegrid/WMTS.js';
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const projection = getProjection('EPSG:3857');
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const projectionExtent = projection.getExtent();
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const size = getWidth(projectionExtent) / 256;
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const resolutions = new Array(14);
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const matrixIds = new Array(14);
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for (let 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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const map = new Map({
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layers: [
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new TileLayer({
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source: new OSM(),
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opacity: 0.7
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}),
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new TileLayer({
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opacity: 0.7,
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source: new WMTS({
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attributions: 'Tiles © <a href="https://services.arcgisonline.com/arcgis/rest/' +
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'services/Demographics/USA_Population_Density/MapServer/">ArcGIS</a>',
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url: 'https://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 WMTSTileGrid({
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origin: 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: defaultControls({
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attributionOptions: {
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collapsible: false
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}
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}),
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view: new 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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