Most of our feature handle these common tags:
- colour=color description (word or hexadecimal RGB value)
- height=number in meters
- min_height=number in meters
The ground elevation is done in a distance adaptive way to get something more precise while zooming closer to the ground. Elevation data comes from DEM3 with a maximum precision of 90m.
 Buildings & building:part
We are based on OpenStreetMap simple 3D building specification
over that base:
- building:part not fully included in a building are ignored.
- building:part inherits every building* tags from their parent building if they're not overrided on the part (color, roof shape, height etc).
- height is generated semi-randomly from way_id if neither specified with height tag nor with building:levels tag (we use 3m/levels).
- building:part polygons are removed from the outline polygon they intersects unless the outline is tag with building:part=yes.
- outline with building:part=no or building:parts=vertical/horizontal are ignored.
 "Special" buildings
We're using a proprietary modeled building database (check the Eiffel Tower) transfered as a binary form.
They can be disabled using the "F4 specific buildings" button in the graphic options window.
We support simple roof shapes from roof:shape, building:roof:shape and building:shape tags:
flat [default], pyramidal, pyramid, hipped, half-hipped (rendered as hipped), skillion, gabled, pitched, dome, onion, mansard, gambrel, round, sawtooth
We generate buildings with man_made=chimney or tower:type=cooling using an Hyperboloid shape.
We handle building:part=steps with roof:shape=skillion (if step:height is not specified we'll use 16cm).
Roofs ridges are generated using a straight skeleton algorithm.
If roof:orientation=across we will use th optimal oriented bounding box (oBox) to find the smallest edge of the building.
If roof height if not defined it will be generated:
Dome, Mansard, Gambrel and Round will use oBox minimal size to determine height.
Skillion will use 25% of building total height.
Others shape will use 4m.
Walls height is computed as height - roof:height.
If building=roof or wall=no walls won't be generated.
Colors are mapped upon this table
Hex colors are applied "as is".
When no colors are set, we're using a material to color table.
Reflect rate table:
glass = 30% gold = 20% mirror = 99%
Walls will use building:facade:material, building:material or material tags.
Roofs will use roof:material or building:roof:material tags.
 Urban details
We generate wide polygons for barrier=wall|hedge and textured polygons for barrier=fence.
If a building got a man_made=chimney or tower:type=cooling we ad a white smoke effect on top taking account of current wind direction and speed.
A Venus de Milo model is pushed on elements with monument=statue artwork_type|artwork:type=sculpture|statue. We handle height and min_height tags.
 Street lamps
A specific model is added on highway=street_lamp points.
 Wind generator
A specific animated model is added on power=generator and generator:source=wind points.
 Petroleum well
A specific animated model is added on man_made=petroleum_well points.
 Construction cranes
A specific animated model is added semi-randomly on landuse=construction polygons.
 Power lines and poles
We handle power=line|minor_line with a black wireframe style with specific models for power=pole|tower points. The tag cables=(number) works on power=line.
A specific model is added on man_made=lighthouse polygons and points. Height is taken from height tag or deduced from seamark tags.
We semi-randomly add graves on landuse=cemetery or amenity=grave_yard polygons.
Animated particle generator is added on amenity=fountain polygons and points.
A specific animated flag model is added on golf=pin|hole (last point of lines, center of polygons or position of points) and man_made=flagpole.
A specific model is randomly added on lines with waterway=river|canal and boat:yes|designated|permissive or route=ferry.
A specific model is added on points with aerialway=pylon. Cables are renderered on lines with aerialway=cable_car|j-bar|t-bar|platter|drag_lift|gondola|chair_lift|mixed_lift. Animated gondolas are added along aerialway=cable_car|gondola|chair_lift.
 Natural details
The water effect is injected inside the ground texture tiles and its wave direction is global to the whole world.
 Trees, Forests, Scrubs
Trees are inserted:
- onto points with natural=tree
- semi-randomly along lines with natural=tree_row
- semi-randomly inside geometries with landuse=forest|orchard or natural=wood
We handle deciduous, conifer and palm trees, they are taken semi-randomly according to the current latitude if not specified in osm tags.
Bush are inserted:
- semi-randomly inside geometries with natural=heath|scrub
Polygons with landuse=vineyard are randomly filled with aligned hedges.
A specific model is added on natural=stone and megalith_type=true points, lines and polygons.
Clouds, rain, snow... are rendered using worldweatheronline API, we cache its response with a 1° precision for 2h.
Wind direction and speed is forwarded to the clouds dome and the chimney smoke effects.