OSM Buildings is a JavaScript library for visualizing OpenStreetMaps building geometry on interactive maps.
Everything is stabilizing now, entering beta state.
Deprecation notice
Former methods loadData(), setData(), setStyle(), setDate() are deprecated since v0.2.2
Equivalent replacements are load(), set(), style(), date().
Example http://osmbuildings.org/
It's safe use the master branch for production.
For further information visit http://osmbuildings.org, follow @osmbuildings on Twitter or report issues here on Github.
Documentation
Integration with Leaflet
Link Leaflet and OSM Buildings files in your HTML head section.
<head>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css">
<script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script>
<script src="OSMBuildings-Leaflet.js"></script>
</head>Initialize the map engine and add a map tile layer.
Position is set to Berlin at zoom level 17, I'm using MapBox tiles here.
var map = new L.Map('map').setView([52.52020, 13.37570], 17);
new L.TileLayer('http://{s}.tiles.mapbox.com/v3/<YOUR KEY HERE>/{z}/{x}/{y}.png',
{ attribution: 'Map tiles © <a href="http://mapbox.com">MapBox</a>', maxZoom: 17 }).addTo(map);Add the buildings layer.
new OSMBuildings(map).load();As a popular alternative, you could pass a GeoJSON FeatureCollection object.
Geometry types Polygon, Multipolygon and GeometryCollection are supported.
Make sure the building coordinates are projected in EPSG:4326.
Height units m, ft, yd, mi are accepted, no given unit defaults to meters.
var geoJSON = {
"type": "FeatureCollection",
"features": [{
"type": "Feature",
"geometry": {
"type": "Polygon",
"coordinates": [[
[13.37356, 52.52064],
[13.37350, 52.51971],
[13.37664, 52.51973],
[13.37594, 52.52062],
[13.37356, 52.52064]
]]
},
"properties": {
"wallColor": "rgb(255,0,0)",
"roofColor": "rgb(255,128,0)",
"height": 500,
"minHeight": 0
}
}]
};
new OSMBuildings(map).set(geoJSON);Integration with OpenLayers
Link OpenLayers and OSM Buildings files in your HTML head section.
<head>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script src="OSMBuildings-OpenLayers.js"></script>
</head>Initialize the map engine and add a map tile layer.
Position is set to Berlin at zoom level 17.
var map = new OpenLayers.Map('map');
map.addControl(new OpenLayers.Control.LayerSwitcher());
var osm = new OpenLayers.Layer.OSM();
map.addLayer(osm);
map.setCenter(
new OpenLayers.LonLat(13.37570, 52.52020)
.transform(
new OpenLayers.Projection('EPSG:4326'),
map.getProjectionObject()
),
17
);Add the buildings layer.
new OSMBuildings(map).load();API
Constructors
| Constructor | Description |
|---|---|
| new OSMBuildings(map) | Initializes the buildings layer for a given map engine. Currently Leaflet and OpenLayers are supported. |
Constants
| Option | Type | Description |
|---|---|---|
| ATTRIBUTION | String | Holds OSM Buildings copyright information. |
| VERSION | String | Holds current version information. |
Methods
| Method | Description |
|---|---|
| style({Object}) | Set default styles. See below for details. |
| date(new Date(2015, 15, 1, 10, 30))) | Set date/time for shadow projection. |
| each({Function}) | A callback wrapper to override each feature's properties on read. Return false in order to skip a particular feature. Callback receives a feature object as argument. |
| click({Function}) | A callback wrapper to handle click events on features. Callback receives an object { featureId{number,string}, lat{float}, lon{float} } as argument. |
| set({GeoJSON FeatureCollection}) | Just add GeoJSON data to your map. |
| load({Provider}) | Without parameter, it loads OpenStreetMap data tiles via an OSM Buildings proxy. This proxy enables transparent data filtering and caching. Interface of such provider is to be published. |
| getDetails(id, {Function}) | Convenience method to load additional feature information from data provider. Callback function receives a GeoJSON FeatureCollection. |
| screenshot({Boolean}) | Creates a screenshot of all visible OSM Buildings content and returns it as data URL. Parameter indicates, whether browser should display the image directly. |
Styles
| Option | Type | Description |
|---|---|---|
| color/wallColor | String | Defines the objects default primary color. I.e. #ffcc00, rgb(255,200,200), rgba(255,200,200,0.9) |
| roofColor | String | Defines the objects default roof color. |
| shadows | Boolean | Enables or disables shadow rendering, default: enabled |
Data
OSM Tags used
| GeoJSON property | OSM Tags |
|---|---|
| height | height, building:height, levels, building:levels |
| minHeight | min_height, building:min_height, min_level, building:min_level |
| color/wallColor | building:color, building:colour |
| material | building:material, building:facade:material, building:cladding |
| roofColor | roof:color, roof:colour, building:roof:color, building:roof:colour |
| roofMaterial | roof:material, building:roof:material |
| shape | building:shape[=cylinder,sphere] |
| roofShape | roof:shape[=dome] |
| roofHeight | roof:height |
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