マーカーをアニメーション化 | Mapbox GL JS | ドキュメント

各フレームの位置をアップデートして、マーカーの位置をアニメーション化します。

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>マーカーをアニメーション化</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.14.1/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',
style: 'mapbox://styles/mapbox/streets-v11',
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>