Getting started (1)Display a mapStyles (11)Add a default markerAdd an animated icon to the mapAdd a generated icon to the mapGenerate and add a missing icon to the mapAdd a stretchable image to the mapAdd an icon to the mapDisplay a map with a custom styleRender world copiesDisplay a satellite mapChange a map's styleDisplay a mapLayers (40)Display buildings in 3DExtrude polygons for 3D indoor mappingAdd a 3D modelAdd an animated icon to the mapAdd a generated icon to the mapGenerate and add a missing icon to the mapAdd a stretchable image to the mapAdd an icon to the mapAdjust a layer's opacityAnimate a lineAnimate a series of imagesAnimate a pointChange building color based on zoom levelChange the case of labelsDisplay HTML clusters with custom propertiesCreate and style clustersChange a layer's color with buttonsAdd a custom style layerStyle circles with a data-driven propertyStyle lines with a data-driven propertyDisplay and style rich text labelsAdd a pattern to a polygonAdd a new layer below labelsAdd a GeoJSON lineDraw GeoJSON pointsAdd a GeoJSON polygonCreate a heatmap layerAdd hillshadingAdd an imageDisplay line that crosses 180th meridianCreate a gradient line using an expressionAdd multiple geometries from one GeoJSON sourceStyle ocean depth dataShow and hide layersChange worldview of administrative boundariesUpdate a choropleth layer by zoom levelVariable label placementAdd a videoVisualize population densityUse a fallback imageSources (16)Animate a lineAnimate a series of imagesAnimate a pointAdd a canvas sourceJoin local JSON data with vector tile geometriesAdd hillshadingAdd an imageDisplay line that crosses 180th meridianAdd live realtime dataUpdate a feature in realtimeAdd a raster tile sourceAdd a third party vector tile sourceCreate a time sliderAdd a vector tile sourceAdd a videoAdd a WMS sourceUser interaction (27)Adjust a layer's opacityCustomize camera animationsCenter the map on a clicked symbolChange a layer's color with buttonsAnimate 3D buildings based on ambient soundsDisable map rotationCreate a draggable MarkerCreate a draggable pointFilter features within map viewFilter symbols by text inputFilter symbols by toggling a listCreate a hover effectDisplay a non-interactive mapChange a map's languageMeasure distancesGet coordinates of the mouse pointerHighlight features containing similar dataSelect features around a clicked pointGet features under the mouse pointerRestrict map panning to an areaChange a map's styleCreate a time sliderToggle interactionsChange worldview of administrative boundariesUpdate a choropleth layer by zoom levelHighlight features within a bounding boxFit to the bounds of a LineStringCamera (13)Animate map camera around a pointAnimate a point along a routeCustomize camera animationsCenter the map on a clicked symbolFit a map to a bounding boxSlowly fly to a locationFly to a locationNavigate the map with game-like controlsJump to a series of locationsOffset the vanishing point using paddingPlay map locations as a slideshowFly to a location based on scroll positionSet pitch and bearingControls and overlays (17)Animate a markerChange the default position for attributionAdd custom icons with MarkersDisable scroll zoomView a fullscreen mapLocate the userSwipe between mapsDisplay driving directionsShow drawn polygon areaAdd a geocoderAdd a marker using a place nameDisplay map navigation controlsShow polygon information on clickDisplay a popup on clickDisplay a popup on hoverDisplay a popupAttach a popup to a marker instanceGeocoder (10)Supplement forward geocoding search results from another data sourceAccept coordinates as input to a geocoderLimit geocoder results to a named regionUse a custom render function with a geocoderUse the geocoder without a mapPlace the geocoder input outside the mapUse a custom camera animation with a geocoderLocalize the geocoder to a given languageAdd a geocoderSet a point after Geocoder resultBrowser support (1)Check if Mapbox GL JS is supportedInternationalization support (2)Use locally generated ideographsAdd support for right-to-left scripts

Animate 3D buildings based on ambient sounds

Connects the runtime styling API with the Web Audio API, creating a map where the 3D buildings dance to the rhythm of your ambient environment.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Animate 3D buildings based on ambient sounds</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://api.mapbox.com/mapbox-gl-js/v1.12.0/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v1.12.0/mapbox-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 FROM
// https://account.mapbox.com
mapboxgl.accessToken = '<your access token here>';
/* global Promise */
// Use a minimal variant of the Mapbox Dark style, with certain features removed.
var map = new mapboxgl.Map({
style: 'mapbox://styles/examples/cj68bstx01a3r2rndlud0pwpv',
center: {
lng: -74.00649562332922,
lat: 40.70811328605049
},
zoom: 15,
pitch: 55,
container: 'map',
antialias: true
});
map.addControl(new mapboxgl.FullscreenControl());
map.on('load', function () {
var bins = 16;
var maxHeight = 200;
var binWidth = maxHeight / bins;
// Divide the buildings into 16 bins based on their true height, using a layer filter.
for (var i = 0; i < bins; i++) {
map.addLayer({
'id': '3d-buildings-' + i,
'source': 'composite',
'source-layer': 'building',
'filter': [
'all',
['==', 'extrude', 'true'],
['>', 'height', i * binWidth],
['<=', 'height', (i + 1) * binWidth]
],
'type': 'fill-extrusion',
'minzoom': 15,
'paint': {
'fill-extrusion-color': '#aaa',
'fill-extrusion-height-transition': {
duration: 0,
delay: 0
},
'fill-extrusion-opacity': 0.6
}
});
}
// Older browsers might not implement mediaDevices at all, so we set an empty object first
if (navigator.mediaDevices === undefined) {
navigator.mediaDevices = {};
}
// Some browsers partially implement mediaDevices. We can't just assign an object
// with getUserMedia as it would overwrite existing properties.
// Here, we will just add the getUserMedia property if it's missing.
if (navigator.mediaDevices.getUserMedia === undefined) {
navigator.mediaDevices.getUserMedia = function (constraints) {
// First get ahold of the legacy getUserMedia, if present
var getUserMedia =
navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
// Some browsers just don't implement it - return a rejected promise with an error
// to keep a consistent interface
if (!getUserMedia) {
return Promise.reject(
new Error(
'getUserMedia is not implemented in this browser'
)
);
}
// Otherwise, wrap the call to the old navigator.getUserMedia with a Promise
return new Promise(function (resolve, reject) {
getUserMedia.call(navigator, constraints, resolve, reject);
});
};
}
navigator.mediaDevices
.getUserMedia({ audio: true })
.then(function (stream) {
// Set up a Web Audio AudioContext and AnalyzerNode, configured to return the
// same number of bins of audio frequency data.
var audioCtx = new (window.AudioContext ||
window.webkitAudioContext)();
var analyser = audioCtx.createAnalyser();
analyser.minDecibels = -90;
analyser.maxDecibels = -10;
analyser.smoothingTimeConstant = 0.85;
var source = audioCtx.createMediaStreamSource(stream);
source.connect(analyser);
analyser.fftSize = bins * 2;
var dataArray = new Uint8Array(bins);
function draw(now) {
analyser.getByteFrequencyData(dataArray);
// Use that data to drive updates to the fill-extrusion-height property.
var avg = 0;
for (var i = 0; i < bins; i++) {
avg += dataArray[i];
map.setPaintProperty(
'3d-buildings-' + i,
'fill-extrusion-height',
10 + 4 * i + dataArray[i]
);
}
avg /= bins;
// Animate the map bearing and light color over time, and make the light more
// intense when the audio is louder.
map.setBearing(now / 500);
map.setLight({
color:
'hsl(' +
((now / 100) % 360) +
',' +
Math.min(50 + avg / 4, 100) +
'%,50%)',
intensity: Math.min(1, (avg / 256) * 10)
});
requestAnimationFrame(draw);
}
requestAnimationFrame(draw);
})
.catch(function (err) {
console.log('The following gUM error occured: ' + err);
});
});
</script>
</body>
</html>
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