Add custom fog to a map | Mapbox GL JS

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.

JavaScript

React

JavaScript

React

<!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/v3.5.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.5.1/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>

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(() => {
    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;

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