IFC 4.3.0.1 (IFC4X3) development

8.7.2.8 IfcSurfaceOrFaceSurface

8.7.2.8.1 Semantic definition

IfcSurfaceOrFaceSurface provides the option to either select a geometric surface (IfcSurface and subtypes) within a geometric model, or a face with associated surface geometry and coordinates (IfcFaceSurface) within a topological model.

8.7.2.8.2 Type values

Type
IfcFaceBasedSurfaceModel
IfcFaceSurface
IfcSurface
Table 8.7.2.8.A

8.7.2.8.3 Formal representation

TYPE IfcSurfaceOrFaceSurface = SELECT
	(IfcFaceBasedSurfaceModel
	,IfcFaceSurface
	,IfcSurface);
END_TYPE;

8.7.2.8.4 References

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