Defined in File Ifc4x1.h
IfcOuterBoundaryCurve: public Ifc4x1::IfcBoundaryCurve¶
Definition from ISO/CD 10303-42:1992 This is a special subtype of boundary curve which has the additional semantics of defining an outer boundary of a surface. No more than one such curve shall be included in the set of boundaries of a curve bounded surface.
NOTE Corresponding ISO 10303 entity: outer_boundary_curve. Please refer to ISO/IS 10303-42:1994, p.89 for the final definition of the formal standard.
HISTORY New entity in IFC2x4.