79c8afdba8
To have the same path (starting with `ol/`, without `.js`) as in the documentation. The support was added in the webpack config in #8928
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
import Map from 'ol/Map';
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import View from 'ol/View';
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import MVT from 'ol/format/MVT';
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import VectorTileLayer from 'ol/layer/VectorTile';
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import {get as getProjection} from 'ol/proj';
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import VectorTileSource from 'ol/source/VectorTile';
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import {Fill, Icon, Stroke, Style, Text} from 'ol/style';
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import TileGrid from 'ol/tilegrid/TileGrid';
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const key = 'pk.eyJ1IjoiYWhvY2V2YXIiLCJhIjoiRk1kMWZaSSJ9.E5BkluenyWQMsBLsuByrmg';
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// Calculation of resolutions that match zoom levels 1, 3, 5, 7, 9, 11, 13, 15.
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const resolutions = [];
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for (let i = 0; i <= 8; ++i) {
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resolutions.push(156543.03392804097 / Math.pow(2, i * 2));
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}
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// Calculation of tile urls for zoom levels 1, 3, 5, 7, 9, 11, 13, 15.
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function tileUrlFunction(tileCoord) {
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return ('https://{a-d}.tiles.mapbox.com/v4/mapbox.mapbox-streets-v6/' +
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'{z}/{x}/{y}.vector.pbf?access_token=' + key)
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.replace('{z}', String(tileCoord[0] * 2 - 1))
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.replace('{x}', String(tileCoord[1]))
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.replace('{y}', String(tileCoord[2]))
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.replace('{a-d}', 'abcd'.substr(
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((tileCoord[1] << tileCoord[0]) + tileCoord[2]) % 4, 1));
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}
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const map = new Map({
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layers: [
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new VectorTileLayer({
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source: new VectorTileSource({
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attributions: '© <a href="https://www.mapbox.com/map-feedback/">Mapbox</a> ' +
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'© <a href="https://www.openstreetmap.org/copyright">' +
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'OpenStreetMap contributors</a>',
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format: new MVT(),
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tileGrid: new TileGrid({
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extent: getProjection('EPSG:3857').getExtent(),
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resolutions: resolutions,
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tileSize: 512
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}),
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tileUrlFunction: tileUrlFunction
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}),
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style: createMapboxStreetsV6Style(Style, Fill, Stroke, Icon, Text)
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})
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],
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target: 'map',
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view: new View({
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center: [0, 0],
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minZoom: 1,
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zoom: 2
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})
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});
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