57 lines
1.3 KiB
JavaScript
57 lines
1.3 KiB
JavaScript
import Fill from '../src/ol/style/Fill.js';
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import GeoJSON from '../src/ol/format/GeoJSON.js';
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import Map from '../src/ol/Map.js';
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import Stroke from '../src/ol/style/Stroke.js';
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import Style from '../src/ol/style/Style.js';
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import VectorLayer from '../src/ol/layer/Vector.js';
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import VectorSource from '../src/ol/source/Vector.js';
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import View from '../src/ol/View.js';
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import {fromLonLat} from '../src/ol/proj.js';
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const highlightStyle = new Style({
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fill: new Fill({
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color: '#EEE',
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}),
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stroke: new Stroke({
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color: '#3399CC',
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width: 2,
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}),
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});
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const vector = new VectorLayer({
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background: 'white',
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source: new VectorSource({
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url: 'https://openlayers.org/data/vector/us-states.json',
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format: new GeoJSON(),
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}),
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});
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const map = new Map({
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layers: [vector],
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target: 'map',
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view: new View({
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center: fromLonLat([-100, 38.5]),
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zoom: 4,
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multiWorld: true,
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}),
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});
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const selected = [];
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const status = document.getElementById('status');
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map.on('singleclick', function (e) {
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map.forEachFeatureAtPixel(e.pixel, function (f) {
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const selIndex = selected.indexOf(f);
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if (selIndex < 0) {
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selected.push(f);
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f.setStyle(highlightStyle);
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} else {
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selected.splice(selIndex, 1);
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f.setStyle(undefined);
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}
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});
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status.innerHTML = ' ' + selected.length + ' selected features';
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});
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