To have an overview what the 3D model is, and how it fits into the entire database please refer to the Element_Overview chapter.
In this paper only the used structures are explained in full details.
Structures
There is a container data structure, which is a union that can hold the data of any 3D model component.
The structures below correspond to a specific 3D component; each of them represent one component type.
API_BodyType
API_PgonType
API_PedgType
API_EdgeType
API_VertType
API_VectType
API_UmatType
API_LghtType