Animate a marker | Mapbox GL JS

Animate the position of a Marker by updating its location on each frame.

JavaScript

React

JavaScript

React


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Animate a marker</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.8.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.8.0/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: [0, 0],
        zoom: 2
    });

    // Add a new Marker.
    const marker = new mapboxgl.Marker({
        color: '#F84C4C' // color it red
    });

    // Define the animation.
    function animateMarker(timestamp) {
        const radius = 20;

        /* 
        Update the data to a new position 
        based on the animation timestamp. 
        The divisor in the expression `timestamp / 1000` 
        controls the animation speed.
         */
        marker.setLngLat([
            Math.cos(timestamp / 1000) * radius,
            Math.sin(timestamp / 1000) * radius
        ]);

        /* 
        Ensure the marker is added to the map. 
        This is safe to call if it's already added.
        */
        marker.addTo(map);

        // Request the next frame of the animation.
        requestAnimationFrame(animateMarker);
    }

    // Start the animation.
    requestAnimationFrame(animateMarker);
</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',
      // Choose from Mapbox's core styles, or make your own style with Mapbox Studio
      style: 'mapbox://styles/mapbox/streets-v12',
      center: [0, 0],
      zoom: 2
    });

    // Add a new Marker.
    const marker = new mapboxgl.Marker({
      color: '#F84C4C' // color it red
    });

    // Define the animation.
    function animateMarker(timestamp) {
      const radius = 20;

      /*
            Update the data to a new position
            based on the animation timestamp.
            The divisor in the expression `timestamp / 1000`
            controls the animation speed.
            */
      marker.setLngLat([
        Math.cos(timestamp / 1000) * radius,
        Math.sin(timestamp / 1000) * radius
      ]);

      /*
            Ensure the marker is added to the mapRef.
            This is safe to call if it's already added.
            */
      marker.addTo(mapRef.current);

      // Request the next frame of the animation.
      requestAnimationFrame(animateMarker);
    }

    // Start the animation.
    requestAnimationFrame(animateMarker);

    // Clean up by removing marker and map on component unmount
    return () => {
      marker.remove();
      mapRef.current.remove();
    };
  }, []);

  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。

追加の開発者リソース

このexampleは役に立ちましたか？