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Extrude polygons for 3D indoor mapping

Extrude polygons for 3D indoor mapping

Create a 3D indoor map with the fill-extrude-height paint property.

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Extrude polygons for 3D indoor mapping</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.js"></script>
<link href="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.css" rel="stylesheet" />
<style>
	body { margin: 0; padding: 0; }
    #map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>

<div id="map"></div>
<script>
    goongjs.accessToken = 'wnicbAmnNkoMHNYUKWnlFHezV189FjmMwkNJ7hKW';
    var map = new goongjs.Map({
        container: 'map',
        style: 'https://tiles.goong.io/assets/goong_map_web.json',
        center: [-87.61694, 41.86625],
        zoom: 15.99,
        pitch: 40,
        bearing: 20,
        antialias: true
    });

    map.on('load', function () {
        map.addSource('floorplan', {
            // GeoJSON Data source used in vector tiles, documented at
            // https://gist.github.com/ryanbaumann/a7d970386ce59d11c16278b90dde094d
            'type': 'geojson',
            'data': 'https://docs.goong.io/assets/indoor-3d-map.geojson'
        });
        map.addLayer({
            'id': 'room-extrusion',
            'type': 'fill-extrusion',
            'source': 'floorplan',
            'paint': {
                // See the Mapbox Style Specification for details on data expressions.
                // https://docs.goong.io/style-spec/#expressions

                // Get the fill-extrusion-color from the source 'color' property.
                'fill-extrusion-color': ['get', 'color'],

                // Get fill-extrusion-height from the source 'height' property.
                'fill-extrusion-height': ['get', 'height'],

                // Get fill-extrusion-base from the source 'base_height' property.
                'fill-extrusion-base': ['get', 'base_height'],

                // Make extrusions slightly opaque for see through indoor walls.
                'fill-extrusion-opacity': 0.5
            }
        });
    });
</script>
</body>
</html>