Intuitive CityGML Import

The City Model Import function allows you to import all 3D city model data that conforms to PLATEAU's 3D City Model Standard Product Specification (2nd Edition Series) into your Unreal levels as input.

You can specify a range of import by selecting a rectangle in map.

CityGML shape data cannot be visualized in the game engine in its original format, so it is converted to polygon mesh at the time of import. The converted polygon mesh is visualized as a mesh actor in the Unreal level. When converting to a polygon mesh, you can select the unit of merging from primary(buildings, roads, etc.), atomic(walls, roof surfaces, etc.), or area(all land actors within a 100m x 100m area are merged).

3D City Model Adjustment:

You can adjust the appearance of the 3D city model imported into the level with the import function.

• Switch visibility based on LOD and city object type

• Align plane objects to ground

• Change material based on type or attributes

Export of 3D City Models to FBX, OBJ, glTF:

Imported 3D city models can be exported in 3D file formats.

• Export to OBJ, FBX, and glTF

• Exclusion of actors set to be hidden by the city model adjustment function

• Output coordinate system can be selected from Local (coordinates in the Unreal level) and Plane Cartesian (planar Cartesian coordinates)

• Output mesh coordinate axis settings

Road Network

• Generate road network for better looking roads and traffic simulation.

API for Accessing Attributes in 3D City Models:

APIs to access attributes in 3D city models are provided. The API provides access to all attribute information contained in CityGML. The names of Unreal components in the imported 3D city model correspond to their IDs in CityGML, so you can specify the name of each actor to the API to retrieve its associated attribute information.