Animate map camera around a point | Mapbox GL JS

This example uses rotateTo, the JavaScript window.requestAnimationFrame() method to continuously rotate the map, and the interpolate expression operator to animate the map camera around a point.

JavaScript

React

JavaScript

React


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Animate map camera around a point</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/light-v11',
        center: [-87.62712, 41.89033],
        zoom: 15.5,
        pitch: 45
    });

    function rotateCamera(timestamp) {
        // clamp the rotation between 0 -360 degrees
        // Divide timestamp by 100 to slow rotation to ~10 degrees / sec
        map.rotateTo((timestamp / 100) % 360, { duration: 0 });
        // Request the next frame of the animation.
        requestAnimationFrame(rotateCamera);
    }

    map.on('load', () => {
        // Start the animation.
        rotateCamera(0);

        // Add 3D buildings and remove label layers to enhance the map
        const layers = map.getStyle().layers;
        for (const layer of layers) {
            if (layer.type === 'symbol' && layer.layout['text-field']) {
                // remove text labels
                map.removeLayer(layer.id);
            }
        }

        map.addLayer({
            'id': '3d-buildings',
            'source': 'composite',
            'source-layer': '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
            }
        });
    });
</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/light-v11',
      center: [-87.62712, 41.89033],
      zoom: 15.5,
      pitch: 45
    });

    function rotateCamera(timestamp) {
      mapRef.current.rotateTo((timestamp / 100) % 360, { duration: 0 });
      requestAnimationFrame(rotateCamera);
    }

    mapRef.current.on('load', () => {
      rotateCamera(0);

      const layers = mapRef.current.getStyle().layers;
      for (const layer of layers) {
        if (layer.type === 'symbol' && layer.layout['text-field']) {
          mapRef.current.removeLayer(layer.id);
        }
      }

      mapRef.current.addLayer({
        id: '3d-buildings',
        source: 'composite',
        '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
        }
      });
    });
  }, []);

  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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