debug/vector/vector-canvas.html - main - githubmirror/Leaflet

debug/vector/vector-canvas.html
105 строк3 KB
Simon Legner
Rename `Map` to `LeafletMap` and keep `Map` as alias (#9892)
11 ноя 2025, 21:28
11 ноя 2025, 21:282e9b617
<!doctype html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>Leaflet debug page - Vector Canvas</title>
		<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0" />
		<link rel="stylesheet" href="../../dist/leaflet.css" />
		<link rel="stylesheet" href="../css/screen.css" />
		<script type="importmap">
			{
				"imports": {
					"leaflet": "../../dist/leaflet-src.js"
				}
			}
		</script>
	</head>
	<body>
		<div id="map"></div>
		<button id="removePath" type="button">Remove path</button>
		<button id="removeCircle" type="button">Remove circle</button>
		<button id="removeAll" type="button">Remove all layers</button>
		<script type="module">
			import {TileLayer, LatLng, Canvas, Polyline, LeafletMap, LayerGroup, LatLngBounds, Circle, CircleMarker, Polygon} from 'leaflet';
			import route from './route.js';

			const osm = new TileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {maxZoom: 18});
			const latlngs = route.map(p => new LatLng(p[0], p[1]));

			const canvas = new Canvas();
			const path = new Polyline(latlngs, {renderer: canvas});
			const map = new LeafletMap('map', {layers: [osm], preferCanvas: true});
			const group = new LayerGroup();

			map.fitBounds(new LatLngBounds(latlngs));

			const circleLocation = new LatLng(51.508, -0.11);
			const circleOptions = {
				color: 'red',
				fillColor: 'yellow',
				fillOpacity: 0.7,
				renderer: canvas
			};

			const circle = new Circle(circleLocation, 500000, circleOptions);
			const circleMarker = new CircleMarker(circleLocation, {fillColor: 'blue', fillOpacity: 1, stroke: false});

			group.addLayer(circle).addLayer(circleMarker);

			circle.bindPopup('I am a circle');
			circleMarker.bindPopup('I am a circle marker');

			group.addLayer(path);
			path.bindPopup('I am a polyline');

			const p1 = latlngs[0];
			const p2 = latlngs[Math.round(route.length / 4)];
			const p3 = latlngs[Math.round(route.length / 3)];
			const p4 = latlngs[Math.round(route.length / 2)];
			const p5 = latlngs[route.length - 1];
			const polygonPoints = [p1, p2, p3, p4, p5];

			const h1 = new LatLng(p1.lat, p1.lng);
			const h2 = new LatLng(p2.lat, p2.lng);
			const h3 = new LatLng(p3.lat, p3.lng);
			const h4 = new LatLng(p4.lat, p4.lng);
			const h5 = new LatLng(p5.lat, p5.lng);

			h1.lng += 20;
			h2.lat -= 5;
			h3.lat -= 5;
			h4.lng -= 10;
			h5.lng -= 8;
			h5.lat += 10;

			const holePoints = [h5, h4, h3, h2, h1];
			const polygon = new Polygon([polygonPoints, holePoints], {
				fillColor: '#333',
				color: 'green',
				renderer: canvas
			});
			group.addLayer(polygon);

			const line = new Polyline([h1, h4, h5], {
				dashArray: '5, 5'
			});
			group.addLayer(line);

			polygon.bindPopup('I am a polygon');

			const circleMarker2 = new CircleMarker([25.5, 0], {
				dashArray: '5, 5',
				fillColor: 'red',
				color: 'green',
				renderer: canvas
			});
			group.addLayer(circleMarker2);

			map.addLayer(group);

			document.getElementById('removePath').addEventListener('click', () => group.removeLayer(path));
			document.getElementById('removeCircle').addEventListener('click', () => group.removeLayer(circle));
			document.getElementById('removeAll').addEventListener('click', () => group.clearLayers());
		</script>
	</body>
</html>