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Display Buildings in 3D

Display Buildings in 3D

Extrude building footprints into 3D using fill-extrusion layers.

const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [16.3738, 48.2082],
        zoom: 16,
        pitch: 45,
        bearing: -17.6,
        attributionControl: { compact: false }
    });

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

    map.on('load', () => {
        const layers = map.getStyle().layers;
        let labelLayerId;
        for (const layer of layers) {
            if (layer.type === 'symbol' && layer.layout['text-field']) {
                labelLayerId = layer.id;
                break;
            }
        }

        map.addSource('buildings', {
            type: 'vector',
            url: 'https://demotiles.maplibre.org/tiles/tiles.json'
        });

        map.addLayer({
            id: '3d-buildings',
            source: 'buildings',
            'source-layer': 'building',
            filter: ['==', 'extrude', 'true'],
            type: 'fill-extrusion',
            minzoom: 15,
            paint: {
                'fill-extrusion-color': '#aaa',
                'fill-extrusion-height': ['interpolate', ['linear'], ['zoom'], 15, 0, 15.05, ['get', 'height']],
                'fill-extrusion-base': ['interpolate', ['linear'], ['zoom'], 15, 0, 15.05, ['get', 'min_height']],
                'fill-extrusion-opacity': 0.6
            }
        }, labelLayerId);
    });
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Display Buildings in 3D – Maptoolkit Maps JS</title>
    <meta property="og:description" content="Extrude building footprints into 3D using fill-extrusion layers." />
    <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>
<script>
    const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [16.3738, 48.2082],
        zoom: 16,
        pitch: 45,
        bearing: -17.6,
        attributionControl: { compact: false }
    });

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

    map.on('load', () => {
        const layers = map.getStyle().layers;
        let labelLayerId;
        for (const layer of layers) {
            if (layer.type === 'symbol' && layer.layout['text-field']) {
                labelLayerId = layer.id;
                break;
            }
        }

        map.addSource('buildings', {
            type: 'vector',
            url: 'https://demotiles.maplibre.org/tiles/tiles.json'
        });

        map.addLayer({
            id: '3d-buildings',
            source: 'buildings',
            'source-layer': 'building',
            filter: ['==', 'extrude', 'true'],
            type: 'fill-extrusion',
            minzoom: 15,
            paint: {
                'fill-extrusion-color': '#aaa',
                'fill-extrusion-height': ['interpolate', ['linear'], ['zoom'], 15, 0, 15.05, ['get', 'height']],
                'fill-extrusion-base': ['interpolate', ['linear'], ['zoom'], 15, 0, 15.05, ['get', 'min_height']],
                'fill-extrusion-opacity': 0.6
            }
        }, labelLayerId);
    });
</script>
</body>
</html>
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