Class Ifc4x1::IfcPcurve

Nested Relationships

This class is a nested type of Struct Ifc4x1.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4x1::IfcPcurve : public Ifc4x1::IfcCurve

Definition from ISO/CD 10303-42:1992: A pcurve is a curve which lies on the basis of a surface and is defined in the parameter space of that surface. The basis curve is a curve defined in the two-dimensional parametric space of a reference basis surface. Although it is defined by a curve in two dimensional space, the variables involved are u and v, which occur in the parametric representation of the referenced surface, rather than the x, y, Cartesian coordinates.

The basis curve is only defined within the parametric range of the surface.

NOTE Corresponding ISO 10303 entity: pcurve. Please refer to ISO/IS 10303-42:1994, p.59 for the final definition of the formal standard. The definition of IfcPCurve derivates from pcurve. The following changes have been made: The BasisCurve replaces the definition of reference_to_curve since there is no requirement of having same dimensionality within the representation context.

HISTORY New class in IFC2x4.

Public Types

typedef IfcTemplatedEntityList<IfcPcurve> list

Public Functions

::Ifc4x1::IfcSurface *BasisSurface() const
void setBasisSurface(::Ifc4x1::IfcSurface *v)
::Ifc4x1::IfcCurve *ReferenceCurve() const
void setReferenceCurve(::Ifc4x1::IfcCurve *v)
const IfcParse::entity &declaration() const
IfcPcurve(IfcEntityInstanceData *e)
IfcPcurve(::Ifc4x1::IfcSurface *v1_BasisSurface, ::Ifc4x1::IfcCurve *v2_ReferenceCurve)

Public Static Functions

const IfcParse::entity &Class()