47 lines
1.2 KiB
JavaScript
47 lines
1.2 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 TileLayer from '../src/ol/layer/Tile.js';
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import {transformExtent} from '../src/ol/proj.js';
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import _ol_source_TileJSON_ from '../src/ol/source/TileJSON.js';
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function transform(extent) {
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return transformExtent(extent, 'EPSG:4326', 'EPSG:3857');
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}
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var extents = {
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India: transform([68.17665, 7.96553, 97.40256, 35.49401]),
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Argentina: transform([-73.41544, -55.25, -53.62835, -21.83231]),
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Nigeria: transform([2.6917, 4.24059, 14.57718, 13.86592]),
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Sweden: transform([11.02737, 55.36174, 23.90338, 69.10625])
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};
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var base = new TileLayer({
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source: new _ol_source_TileJSON_({
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url: 'https://api.tiles.mapbox.com/v3/mapbox.world-light.json?secure',
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crossOrigin: 'anonymous'
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})
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});
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var overlay = new TileLayer({
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extent: extents.India,
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source: new _ol_source_TileJSON_({
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url: 'https://api.tiles.mapbox.com/v3/mapbox.world-black.json?secure',
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crossOrigin: 'anonymous'
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})
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});
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var map = new Map({
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layers: [base, overlay],
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target: 'map',
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view: new View({
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center: [0, 0],
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zoom: 1
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})
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});
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for (var key in extents) {
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document.getElementById(key).onclick = function(event) {
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overlay.setExtent(extents[event.target.id]);
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};
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}
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