Add a Canvas Source

Use an animated HTML canvas as a map source to draw dynamic content.

const API_KEY = 'toursprung';

    const canvas = document.getElementById('canvas');
    const ctx = canvas.getContext('2d');

    let phase = 0;
    function animate() {
        ctx.clearRect(0, 0, 400, 400);
        for (let i = 0; i < 6; i++) {
            const x = 200 + Math.cos(phase + i * Math.PI / 3) * 120;
            const y = 200 + Math.sin(phase + i * Math.PI / 3) * 120;
            const r = 30 + Math.sin(phase * 2 + i) * 15;
            ctx.beginPath();
            ctx.arc(x, y, r, 0, Math.PI * 2);
            ctx.fillStyle = `hsla(${(phase * 60 + i * 60) % 360}, 80%, 55%, 0.7)`;
            ctx.fill();
        }
        phase += 0.02;
        requestAnimationFrame(animate);
    }
    animate();

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [13.5, 47.5],
        zoom: 6,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    map.on('load', () => {
        map.addSource('canvas-source', {
            type: 'canvas',
            canvas: 'canvas',
            coordinates: [
                [9.5, 49.1],
                [17.2, 49.1],
                [17.2, 46.4],
                [9.5, 46.4]
            ],
            animate: true
        });

        map.addLayer({
            id: 'canvas-layer',
            type: 'raster',
            source: 'canvas-source',
            paint: { 'raster-opacity': 0.85 }
        });
    });

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Add a Canvas Source – Maptoolkit Maps JS</title>
    <meta property="og:description" content="Use an animated HTML canvas as a map source to draw dynamic content." />
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.css" />
    <style>
        html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
        #map { width: 100%; height: 100%; }
    </style>
</head>
<body>
<div id="map"></div>
<canvas id="canvas" style="display:none;" width="400" height="400"></canvas>
<script>
    const API_KEY = 'toursprung';

    const canvas = document.getElementById('canvas');
    const ctx = canvas.getContext('2d');

    let phase = 0;
    function animate() {
        ctx.clearRect(0, 0, 400, 400);
        for (let i = 0; i < 6; i++) {
            const x = 200 + Math.cos(phase + i * Math.PI / 3) * 120;
            const y = 200 + Math.sin(phase + i * Math.PI / 3) * 120;
            const r = 30 + Math.sin(phase * 2 + i) * 15;
            ctx.beginPath();
            ctx.arc(x, y, r, 0, Math.PI * 2);
            ctx.fillStyle = `hsla(${(phase * 60 + i * 60) % 360}, 80%, 55%, 0.7)`;
            ctx.fill();
        }
        phase += 0.02;
        requestAnimationFrame(animate);
    }
    animate();

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [13.5, 47.5],
        zoom: 6,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    map.on('load', () => {
        map.addSource('canvas-source', {
            type: 'canvas',
            canvas: 'canvas',
            coordinates: [
                [9.5, 49.1],
                [17.2, 49.1],
                [17.2, 46.4],
                [9.5, 46.4]
            ],
            animate: true
        });

        map.addLayer({
            id: 'canvas-layer',
            type: 'raster',
            source: 'canvas-source',
            paint: { 'raster-opacity': 0.85 }
        });
    });
</script>
</body>
</html>

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