Defined in File Ifc4x1.h
IfcSurfaceStyle: public Ifc4x1::IfcPresentationStyle¶
IfcSurfaceStyle is an assignment of one or many surface style elements to a surface, defined by subtypes of IfcSurface, IfcFaceBasedSurfaceModel, IfcShellBasedSurfaceModel, or by subtypes of IfcSolidModel. The positive direction of the surface normal relates to the positive side. In case of solids the outside of the solid is to be taken as positive side.
NOTE: The surface style is often referred to as material definition in rendering applications.
NOTE Corresponding ISO 10303 entity: surface_style_usage and surface_side_style. Please refer to ISO/IS 10303-46:1994 for the final definition of the formal standard. The surface style definition in regard to support of rendering has been greatly expanded beyond the scope of ISO/IS 10303-46.
HISTORY New Entity in IFC 2.x.
An indication of which side of the surface to apply the style.