132 lines
2.6 KiB
JavaScript
132 lines
2.6 KiB
JavaScript
import Feature from '../src/ol/Feature.js';
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import Map from '../src/ol/Map.js';
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import Point from '../src/ol/geom/Point.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 {Fill, RegularShape, Stroke, Style} from '../src/ol/style.js';
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const stroke = new Stroke({color: 'black', width: 2});
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const fill = new Fill({color: 'red'});
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const styles = {
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'square': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 4,
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radius: 10,
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angle: Math.PI / 4,
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}),
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}),
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'rectangle': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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radius: 10 / Math.SQRT2,
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radius2: 10,
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points: 4,
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angle: 0,
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scale: [1, 0.5],
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}),
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}),
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'triangle': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 3,
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radius: 10,
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rotation: Math.PI / 4,
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angle: 0,
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}),
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}),
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'star': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 5,
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radius: 10,
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radius2: 4,
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angle: 0,
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}),
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}),
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'cross': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 4,
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radius: 10,
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radius2: 0,
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angle: 0,
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}),
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}),
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'x': new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 4,
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radius: 10,
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radius2: 0,
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angle: Math.PI / 4,
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}),
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}),
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'stacked': [
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new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 4,
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radius: 5,
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angle: Math.PI / 4,
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displacement: [0, 10],
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}),
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}),
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new Style({
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image: new RegularShape({
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fill: fill,
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stroke: stroke,
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points: 4,
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radius: 10,
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angle: Math.PI / 4,
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}),
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}),
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],
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};
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const styleKeys = [
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'x',
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'cross',
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'star',
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'triangle',
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'square',
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'rectangle',
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'stacked',
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];
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const count = 250;
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const features = new Array(count);
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const e = 4500000;
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for (let i = 0; i < count; ++i) {
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const coordinates = [2 * e * Math.random() - e, 2 * e * Math.random() - e];
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features[i] = new Feature(new Point(coordinates));
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features[i].setStyle(
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styles[styleKeys[Math.floor(Math.random() * styleKeys.length)]]
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);
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}
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const source = new VectorSource({
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features: features,
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});
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const vectorLayer = new VectorLayer({
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source: source,
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});
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const map = new Map({
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layers: [vectorLayer],
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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: 2,
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}),
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});
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