Files
openlayers/examples/vector-tiles-4326.js
2019-10-04 14:07:13 +02:00

51 lines
1.5 KiB
JavaScript

import View from '../src/ol/View.js';
import MVT from '../src/ol/format/MVT.js';
import VectorTileSource from '../src/ol/source/VectorTile.js';
import TileGrid from '../src/ol/tilegrid/TileGrid.js';
import olms from 'ol-mapbox-style';
import {defaultResolutions} from 'ol-mapbox-style/util.js';
const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
// Match the server resolutions
const maxResolution = 360 / 512;
defaultResolutions.length = 14;
for (let i = 0; i < 14; ++i) {
defaultResolutions[i] = maxResolution / Math.pow(2, i + 1);
}
olms('map', 'https://api.maptiler.com/maps/basic-4326/style.json?key=' + key).then(function(map) {
// Custom tile grid for the EPSG:4326 projection
const tileGrid = new TileGrid({
extent: [-180, -90, 180, 90],
tileSize: 512,
resolutions: defaultResolutions
});
const mapboxStyle = map.get('mapbox-style');
// Replace the source with a EPSG:4326 projection source for each vector tile layer
map.getLayers().forEach(function(layer) {
const mapboxSource = layer.get('mapbox-source');
if (mapboxSource && mapboxStyle.sources[mapboxSource].type === 'vector') {
const source = layer.getSource();
layer.setSource(new VectorTileSource({
format: new MVT(),
projection: 'EPSG:4326',
urls: source.getUrls(),
tileGrid: tileGrid
}));
}
});
// Configure the map with a view with EPSG:4326 projection
map.setView(new View({
projection: 'EPSG:4326',
zoom: mapboxStyle.zoom,
center: mapboxStyle.center
}));
});