67 lines
1.6 KiB
JavaScript
67 lines
1.6 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import _ol_View_ from '../src/ol/View.js';
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import Point from '../src/ol/geom/Point.js';
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import Draw from '../src/ol/interaction/Draw.js';
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import TileLayer from '../src/ol/layer/Tile.js';
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import _ol_layer_Vector_ from '../src/ol/layer/Vector.js';
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import _ol_source_OSM_ from '../src/ol/source/OSM.js';
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import _ol_source_Vector_ from '../src/ol/source/Vector.js';
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import _ol_style_Icon_ from '../src/ol/style/Icon.js';
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import _ol_style_Stroke_ from '../src/ol/style/Stroke.js';
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import _ol_style_Style_ from '../src/ol/style/Style.js';
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var raster = new TileLayer({
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source: new _ol_source_OSM_()
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});
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var source = new _ol_source_Vector_();
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var styleFunction = function(feature) {
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var geometry = feature.getGeometry();
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var styles = [
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// linestring
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new _ol_style_Style_({
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stroke: new _ol_style_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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var dx = end[0] - start[0];
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var dy = end[1] - start[1];
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var rotation = Math.atan2(dy, dx);
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// arrows
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styles.push(new _ol_style_Style_({
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geometry: new Point(end),
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image: new _ol_style_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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var vector = new _ol_layer_Vector_({
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source: source,
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style: styleFunction
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});
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var map = new Map({
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layers: [raster, vector],
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target: 'map',
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view: new _ol_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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