Animate map camera around a point
Animate the map camera around a point.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Animate map camera around a point</title>
<meta property="og:description" content="Animate the map camera around a point." />
<meta charset='utf-8'>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel='stylesheet' href='https://unpkg.com/maplibre-gl@5.1.0/dist/maplibre-gl.css' />
<script src='https://unpkg.com/maplibre-gl@5.1.0/dist/maplibre-gl.js'></script>
<style>
body { margin: 0; padding: 0; }
html, body, #map { height: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
const map = new maplibregl.Map({
container: 'map',
style:
'https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL',
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': '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>