79c8afdba8
To have the same path (starting with `ol/`, without `.js`) as in the documentation. The support was added in the webpack config in #8928
63 lines
1.3 KiB
JavaScript
63 lines
1.3 KiB
JavaScript
import Map from 'ol/Map';
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import View from 'ol/View';
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import Point from 'ol/geom/Point';
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import Draw from 'ol/interaction/Draw';
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import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer';
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import {OSM, Vector as VectorSource} from 'ol/source';
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import {Icon, Stroke, Style} from 'ol/style';
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const raster = new TileLayer({
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source: new OSM()
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});
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const source = new VectorSource();
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const styleFunction = function(feature) {
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const geometry = feature.getGeometry();
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const styles = [
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// linestring
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new Style({
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stroke: new Stroke({
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color: '#ffcc33',
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width: 2
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})
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})
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];
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geometry.forEachSegment(function(start, end) {
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const dx = end[0] - start[0];
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const dy = end[1] - start[1];
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const rotation = Math.atan2(dy, dx);
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// arrows
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styles.push(new Style({
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geometry: new Point(end),
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image: new Icon({
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src: 'data/arrow.png',
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anchor: [0.75, 0.5],
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rotateWithView: true,
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rotation: -rotation
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})
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}));
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});
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return styles;
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};
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const vector = new VectorLayer({
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source: source,
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style: styleFunction
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});
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const map = new Map({
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layers: [raster, vector],
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target: 'map',
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view: new View({
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center: [-11000000, 4600000],
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zoom: 4
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})
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});
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map.addInteraction(new Draw({
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source: source,
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type: 'LineString'
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}));
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