Represents a 3D model that can be used by a MapMarker3D to be shown on the map.

Geometry of 3D marker can be provided in form of a Wavefront OBJ file as specified in http://www.martinreddy.net/gfx/3d/OBJ.spec or as mesh built via MeshBuilder.

1. Creating MapMarker3DModel from OBJ file

For OBJ files, HERE SDK only supports the following set of features of the OBJ specification:

• Triangle Meshes
• Following vertex attributes must be present:
  • Vertex Position
  • Vertex Normal
  • Texture Coordinates
  • Geometry must be indexed (contain an Index Buffer)
  • Face element

HERE SDK does not support:

• Multi Texturing
• Materials (mtllib [external .mtl file name] )
  • Lines
  • Higher Order Surfaces
  • Vendor specific extensions

For supported texture formats, HERE SDK allows the following formats to be specified: JPG, PNG, GPU compressed texture formats: ECT1 (OpenGL only), YUV, ASTC, KTX.

2. Creating MapMarker3DModel programatically

A 3D mesh can be specified programatically using MeshBuilder and passed to MapMarker3DModel constructor. This method supports creating a mesh from quads and triangles. Textured geometry is also supported, the mesh faces need to have texture coordinates and a texture file needs to be passed along with the mesh to MapMarker3DModel constructor.