cb6995d71a
* Replace Math.log2 with ol/math.log2 * TypedArray.from() browser compatibility fallback * listen for input and change events for range
58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import TileLayer from '../src/ol/layer/WebGLTile.js';
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import View from '../src/ol/View.js';
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import XYZ from '../src/ol/source/XYZ.js';
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const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
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const attributions =
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'<a href="https://www.maptiler.com/copyright/" target="_blank">© MapTiler</a> ' +
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'<a href="https://www.openstreetmap.org/copyright" target="_blank">© OpenStreetMap contributors</a>';
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const variables = {
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exposure: 0,
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contrast: 0,
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saturation: 0,
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};
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const layer = new TileLayer({
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style: {
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exposure: ['var', 'exposure'],
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contrast: ['var', 'contrast'],
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saturation: ['var', 'saturation'],
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variables: variables,
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},
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source: new XYZ({
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crossOrigin: 'anonymous', // TODO: determine if we can avoid this
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attributions: attributions,
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url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
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maxZoom: 20,
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}),
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});
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const map = new Map({
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target: 'map',
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layers: [layer],
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view: new View({
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center: [0, 0],
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zoom: 0,
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}),
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});
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let variable;
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for (variable in variables) {
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const name = variable;
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const element = document.getElementById(name);
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const value = variables[name];
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element.value = value.toString();
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document.getElementById(name + '-value').innerText = value.toFixed(2);
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const listener = function (event) {
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const value = parseFloat(event.target.value);
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document.getElementById(name + '-value').innerText = value.toFixed(2);
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const updates = {};
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updates[name] = value;
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layer.updateStyleVariables(updates);
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};
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element.addEventListener('input', listener);
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element.addEventListener('change', listener);
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}
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