Definition from ISO/CD 10303-42:1992: An elementary surface
(IfcElementarySurface) is a simple analytic surface with defined parametric
NOTE Corresponding STEP entity: elementary_surface. Only the subtype
plane is incorporated as IfcPlane. The derived attribute Dim has been added
(see also note at IfcGeometricRepresentationItem). Please refer to ISO/IS
10303-42:1994, p. 69 for the final definition of the formal standard.
HISTORY New class in IFC Release 1.5
|| The position and orientation of the surface. This attribute is used in the definition of the parameterization
of the surface.
|| The space dimensionality of this class, derived from the dimensionality of the Position.