During my attempts to convert terrain made in FME (using the TINGenerator transformer) to IFC geometry, I have only managed to successfully store volumes. These are made by extruding flat surfaces to 3D extrusions. Then use the GeometryPropertySetter to set the Geometry Name to "Body". Then i store them with an Ifc writer named "IfcProxy". If I open this file with Solibri model viewer, it shows as a cube (screenshot 1).
However, i cannot seem to store a flat object using this method. (Screenshot 2)
Do you have any idea as of how to store flat geometry (instead of solid) using the IFC format writer?
