I want to add 2 or 3 floors for each building using MapBox GL, but when i try using the addlayer, the colours are getting overriden but no layers or floors are added. Been stuck with this for some time now.
I want 3d extrusions of floors in a building.
Tried putting this into a button click as well, but still it is not returning expected results.
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.39.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.39.1/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>
mapboxgl.accessToken = 'pk.eyJ1IjoiZGFuc3dpY2siLCJhIjoiY2l1dTUzcmgxMDJ0djJ0b2VhY2sxNXBiMyJ9.25Qs4HNEkHubd4_Awbd8Og';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v9',
center: [-87.61694, 41.86625],
zoom: 15.99,
pitch: 40,
bearing: 20
});
map.on('load', function() {
map.addLayer({
'id': 'room-extrusion10',
'type': 'fill-extrusion',
'source': 'composite',
'source-layer': 'building',
'paint': {
'fill-extrusion-color': 'blue',
'fill-extrusion-height': {
'type': 'identity',
'property': 'height'
},
'fill-extrusion-base': {
'type': 'identity',
'property': 'max_height'
},
'fill-extrusion-opacity': 1
}
});
map.addLayer({
'id': 'room-extrusion11',
'type': 'fill-extrusion',
'source': 'composite',
'source-layer': 'building',
'paint': {
'fill-extrusion-color': 'red',
'fill-extrusion-height': {
'type': 'identity',
'property': 'height'
},
'fill-extrusion-base': {
'type': 'identity',
'property': 'min_height'
},
'fill-extrusion-opacity': 1
}
},'room-extrusion10');
});
</script>
</body>
</html>
fill-extrusion-heightandfill-extrusion-baseare the paint properties that control the lower and upper height (in meters) of a fill-extrusion feature. In your example these are styled with identity functions based on building height data from OpenStreetMap (in the Mapbox Streets data source), causing them to imitate real-world building shapes (as best as they are mapped). In order to create a fill-extrusion layer that spans only one floor you'd wantfill-extrusion-height: 3(or however tall, in meters, you perceive one story to be) andfill-extrusion-base: 0for the first floor; the second would be height=6 and base=3, and so forth.Note that in all released versions of Mapbox GL JS, multiple fill-extrusion layers don't render correctly with respect to each other. This is fixed in master and will be included in the next release this month.