Animate map camera around a point | NMaps GL JS Docs

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.

<!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" />
<script src="https://cdn.ndrive.com/nmapsgl/v.1.6.8/nmaps-gl.js"></script>
<link href="https://cdn.ndrive.com/nmapsgl/v.1.6.8/nmaps-gl.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>
	// TO MAKE THE MAP APPEAR YOU MUST ADD YOUR ACCESS TOKEN
	nmapsgl.accessToken = '<your access token here>';
	
const map = new nmapsgl.Map({
container: 'map',
style: 'Streets',
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 (let i = 0; i < layers.length; i++) {
if (layers[i].type === 'symbol' && layers[i].layout['text-field']) {
// remove text labels
map.removeLayer(layers[i].id);
}
}
 
map.addLayer({
'id': '3d-buildings',
'source': 'ndrive-map',
'source-layer': 'building',
'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>