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February 22, 2018 16:07
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MapboxGL Century City
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| license: mit |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title>Display buildings in 3D</title> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/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.eyJ1IjoiYWxtY2NvbiIsImEiOiJDYXFYUW4wIn0.bvVdjJzPKs0PsGr4_NQfbA'; | |
| var map = new mapboxgl.Map({ | |
| style: 'mapbox://styles/mapbox/light-v9', | |
| center: [-118.413, 34.052], | |
| zoom: 15.5, | |
| pitch: 20, | |
| bearing: -35, | |
| hash: true, | |
| container: 'map' | |
| }); | |
| // The 'building' layer in the mapbox-streets vector source contains building-height | |
| // data from OpenStreetMap. | |
| map.on('load', function() { | |
| // Insert the layer beneath any symbol layer. | |
| var layers = map.getStyle().layers; | |
| var labelLayerId; | |
| for (var i = 0; i < layers.length; i++) { | |
| if (layers[i].type === 'symbol' && layers[i].layout['text-field']) { | |
| labelLayerId = layers[i].id; | |
| break; | |
| } | |
| } | |
| 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': .6 | |
| } | |
| }, labelLayerId); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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