76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
import HeatmapLayer from '../../../../src/ol/layer/Heatmap.js';
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import Feature from '../../../../src/ol/Feature.js';
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import Point from '../../../../src/ol/geom/Point.js';
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import VectorSource from '../../../../src/ol/source/Vector.js';
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import Map from '../../../../src/ol/Map.js';
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import View from '../../../../src/ol/View.js';
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describe('ol.layer.Heatmap', function() {
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describe('constructor', function() {
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it('can be constructed without arguments', function() {
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const instance = new HeatmapLayer();
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expect(instance).to.be.an(HeatmapLayer);
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});
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});
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describe('hit detection', function() {
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it('hit detects two distinct features', function(done) {
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const target = document.createElement('div');
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target.style.width = '300px';
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target.style.height = '300px';
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document.body.appendChild(target);
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const feature = new Feature({geometry: new Point([0, 0]), id: 1, weight: 10});
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const feature2 = new Feature({geometry: new Point([14, 14]), id: 2, weight: 10});
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const source = new VectorSource({
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features: [feature, feature2]
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});
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const layer = new HeatmapLayer({
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source: source,
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blur: 10,
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radius: 10
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});
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const map = new 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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resolution: 0.1
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}),
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target: target
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});
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map.renderSync();
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function hitTest(coordinate) {
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const features = map.getFeaturesAtPixel(
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map.getPixelFromCoordinate(coordinate)
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);
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return features.length ? features[0] : null;
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}
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setTimeout(function() {
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let res;
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res = hitTest([0, 0]);
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expect(res).to.be(feature);
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res = hitTest([20, 0]);
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expect(res).to.be(null);
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res = hitTest([14, 14]);
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expect(res).to.be(feature2);
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res = hitTest([0, 14]);
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expect(res).to.be(null);
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document.body.removeChild(target);
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done();
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}, 100);
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});
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});
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});
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