Add custom fog to a map
This example uses setFog to add a custom atmosphere effect to a map. It transitions between night and day to change the mood of the environment.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add custom fog to a map</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.9.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.9.1/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';
(async () => {
const map = new mapboxgl.Map({
container: 'map',
zoom: 13,
center: [6.6301, 45.35625],
pitch: 80,
bearing: 160,
interactive: false,
// Choose from Mapbox's core styles, or make your own style with Mapbox Studio
style: 'mapbox://styles/mapbox/satellite-v9'
});
await map.once('style.load');
// Add daytime fog
map.setFog({
'range': [-1, 2],
'horizon-blend': 0.3,
'color': 'white',
'high-color': '#add8e6',
'space-color': '#d8f2ff',
'star-intensity': 0.0
});
// Add 3D terrain
map.addSource('mapbox-dem', {
'type': 'raster-dem',
'url': 'mapbox://mapbox.terrain-rgb',
'tileSize': 512,
'maxzoom': 14
});
map.setTerrain({
'source': 'mapbox-dem',
'exaggeration': 1.5
});
// Run a timing loop to switch between day and night
await map.once('idle');
let lastTime = 0.0;
let animationTime = 0.0;
let cycleTime = 0.0;
let night = true;
const initialBearing = map.getBearing();
function frame(time) {
const elapsedTime = (time - lastTime) / 1000.0;
animationTime += elapsedTime;
cycleTime += elapsedTime;
if (cycleTime >= 10.0) {
if (night) {
// night fog styling
map.setFog({
'range': [-1, 2],
'horizon-blend': 0.3,
'color': '#242B4B',
'high-color': '#161B36',
'space-color': '#0B1026',
'star-intensity': 0.8
});
} else {
// day fog styling
map.setFog({
'range': [-1, 2],
'horizon-blend': 0.3,
'color': 'white',
'high-color': '#add8e6',
'space-color': '#d8f2ff',
'star-intensity': 0.0
});
}
night = !night;
cycleTime = 0.0;
}
const rotation = initialBearing + animationTime * 2.0;
map.setBearing(rotation % 360);
lastTime = time;
window.requestAnimationFrame(frame);
}
window.requestAnimationFrame(frame);
})();
</script>
</body>
</html>
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.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',
zoom: 13,
center: [6.6301, 45.35625],
pitch: 80,
bearing: 160,
interactive: false,
style: 'mapbox://styles/mapbox/satellite-v9'
});
mapRef.current.once('style.load').then(() => {
mapRef.current.setFog({
range: [-1, 2],
'horizon-blend': 0.3,
color: 'white',
'high-color': '#add8e6',
'space-color': '#d8f2ff',
'star-intensity': 0.0
});
mapRef.current.addSource('mapbox-dem', {
type: 'raster-dem',
url: 'mapbox://mapbox.terrain-rgb',
tileSize: 512,
maxzoom: 14
});
mapRef.current.setTerrain({
source: 'mapbox-dem',
exaggeration: 1.5
});
mapRef.current.once('idle').then(() => {
let lastTime = 0.0;
let animationTime = 0.0;
let cycleTime = 0.0;
let night = true;
const initialBearing = mapRef.current.getBearing();
function frame(time) {
const elapsedTime = (time - lastTime) / 1000.0;
animationTime += elapsedTime;
cycleTime += elapsedTime;
if (cycleTime >= 10.0) {
if (night) {
// night fog styling
mapRef.current.setFog({
range: [-1, 2],
'horizon-blend': 0.3,
color: '#242B4B',
'high-color': '#161B36',
'space-color': '#0B1026',
'star-intensity': 0.8
});
} else {
// day fog styling
mapRef.current.setFog({
range: [-1, 2],
'horizon-blend': 0.3,
color: 'white',
'high-color': '#add8e6',
'space-color': '#d8f2ff',
'star-intensity': 0.0
});
}
night = !night;
cycleTime = 0.0;
}
const rotation = initialBearing + animationTime * 2.0;
mapRef.current.setBearing(rotation % 360);
lastTime = time;
window.requestAnimationFrame(frame);
}
window.requestAnimationFrame(frame);
});
});
return () => mapRef.current.remove();
}, []);
return <div id="map" ref={mapContainerRef} style={{ height: '100%' }} />;
};
export default MapboxExample;
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.Was this example helpful?