Goong Documents
Ví dụ
Display buildings in 3D

Display buildings in 3D

Use extrusions to display buildings' height in 3D.

Edit in JSFiddleEdit in CodePen

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Display buildings in 3D</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({
        style: 'https://tiles.goong.io/assets/goong_map_web.json',
        center: [105.83991, 21.028],
        zoom: 15.5,
        pitch: 45,
        bearing: -17.6,
        container: 'map',
        antialias: true
    });

    // The 'building' layer in the streets vector source contains building-height
    // data from OpenStreetMap.
    map.on('load', function () {
        // Insert the layer beneath any symbol layer.
        var layers = map.getStyle().layers;

        var labelLayerId;
        for (var i = 0; i < layers.length; i++) {
            if (layers[i].type === 'symbol' && layers[i].layout['text-field']) {
                labelLayerId = layers[i].id;
                break;
            }
        }

        map.addLayer(
            {
                'id': '3d-buildings',
                'source': 'composite',
                'source-layer': 'VN_Building',
                'filter': ['==', 'extrude', 'true'],
                'type': 'fill-extrusion',
                'minzoom': 15,
                'paint': {
                    'fill-extrusion-color': '#aaa',

                    // use an 'interpolate' expression to add a smooth transition effect to the
                    // buildings as the user zooms in
                    '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>