Extrude polygons for 3D indoor mapping | Mapbox GL JS

This example demonstrates how to create a 3D indoor map.

It uses the get expression to set a fill-extrusion layer's fill-extrusion-height, fill-extrusion-base, and fill-extrusion-color paint properties using values from the GeoJSON source.

JavaScript

React

JavaScript

React


<!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">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.9.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.9.0/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
	// TO MAKE THE MAP APPEAR YOU MUST
	// ADD YOUR ACCESS TOKEN FROM
	// https://account.mapbox.com
	mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
    const map = new mapboxgl.Map({
        container: 'map',
        // Choose from Mapbox's core styles, or make your own style with Mapbox Studio
        style: 'mapbox://styles/mapbox/streets-v12',
        center: [-87.61694, 41.86625],
        zoom: 15.99,
        pitch: 40,
        bearing: 20,
        antialias: true
    });

    map.on('load', () => {
        map.addSource('floorplan', {
            'type': 'geojson',
            /*
             * Each feature in this GeoJSON file contains values for
             * `properties.height`, `properties.base_height`,
             * and `properties.color`.
             * In `addLayer` you will use expressions to set the new
             * layer's paint properties based on these values.
             */
            'data': 'https://docs.mapbox.com/mapbox-gl-js/assets/indoor-3d-map.geojson'
        });
        map.addLayer({
            'id': 'room-extrusion',
            'type': 'fill-extrusion',
            'source': 'floorplan',
            'paint': {
                // 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 to see through indoor walls.
                'fill-extrusion-opacity': 0.5
            }
        });
    });
</script>

</body>
</html>

このコードスニペットは、YOUR_MAPBOX_ACCESS_TOKENをあなたのMapboxアカウントのアクセストークンに置き換えるまで、期待通りに動作しません。

JavaScript

React


import React, { useEffect, useRef } from 'react';
import mapboxgl from 'mapbox-gl';

import 'mapbox-gl/dist/mapbox-gl.css';

const MapboxExample = () => {
  const mapContainerRef = useRef();
  const mapRef = useRef();

  useEffect(() => {
    // TO MAKE THE MAP APPEAR YOU MUST
    // ADD YOUR ACCESS TOKEN FROM
    // https://account.mapbox.com
    mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';

    mapRef.current = new mapboxgl.Map({
      container: 'map',
      style: 'mapbox://styles/mapbox/streets-v12',
      center: [-87.61694, 41.86625],
      zoom: 15.99,
      pitch: 40,
      bearing: 20,
      antialias: true
    });

    mapRef.current.on('load', () => {
      mapRef.current.addSource('floorplan', {
        type: 'geojson',
        data: 'https://docs.mapbox.com/mapbox-gl-js/assets/indoor-3d-map.geojson'
      });

      mapRef.current.addLayer({
        id: 'room-extrusion',
        type: 'fill-extrusion',
        source: 'floorplan',
        paint: {
          'fill-extrusion-color': ['get', 'color'],
          'fill-extrusion-height': ['get', 'height'],
          'fill-extrusion-base': ['get', 'base_height'],
          'fill-extrusion-opacity': 0.5
        }
      });
    });
  }, []);

  return <div id="map" ref={mapContainerRef} style={{ height: '100%' }}></div>;
};

export default MapboxExample;

このコードスニペットは、YOUR_MAPBOX_ACCESS_TOKENをあなたのMapboxアカウントのアクセストークンに置き換えるまで、期待通りに動作しません。

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