Defined in File Ifc4x3_rc1.h
public Ifc4x3_rc1::IfcGeometricRepresentationItem(Class Ifc4x3_rc1::IfcGeometricRepresentationItem)
public Ifc4x3_rc1::IfcBoundedCurve(Class Ifc4x3_rc1::IfcBoundedCurve)
public Ifc4x3_rc1::IfcConic(Class Ifc4x3_rc1::IfcConic)
public Ifc4x3_rc1::IfcLine(Class Ifc4x3_rc1::IfcLine)
public Ifc4x3_rc1::IfcOffsetCurve(Class Ifc4x3_rc1::IfcOffsetCurve)
public Ifc4x3_rc1::IfcPcurve(Class Ifc4x3_rc1::IfcPcurve)
public Ifc4x3_rc1::IfcSurfaceCurve(Class Ifc4x3_rc1::IfcSurfaceCurve)
IfcCurve: public Ifc4x3_rc1::IfcGeometricRepresentationItem¶
Definition from ISO/CD 10303-42:1992: A curve can be envisioned as the path of a point moving in its coordinate space.
NOTE: Corresponding ISO 10303 entity: curve, only the following subtypes have been incorporated into IFC: line as IfcLine, conic as IfcConic, bounded_curve as IfcBoundedCurve. Please refer to ISO/IS 10303-42:1994, p.37 for the final definition of the formal standard. The derived attribute Dim has been added (see also note at IfcGeometricRepresentationItem).
HISTORY: New entity in IFC Release 1.0
A curve shall be arcwise connected A curve shall have an arc length greater than zero.