Class Ifc4::IfcCurve

• Defined in File Ifc4.h

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

• public Ifc4::IfcGeometricRepresentationItem (Class Ifc4::IfcGeometricRepresentationItem)

Derived Types

• public Ifc4::IfcBoundedCurve (Class Ifc4::IfcBoundedCurve)

• public Ifc4::IfcConic (Class Ifc4::IfcConic)

• public Ifc4::IfcLine (Class Ifc4::IfcLine)

• public Ifc4::IfcOffsetCurve2D (Class Ifc4::IfcOffsetCurve2D)

• public Ifc4::IfcOffsetCurve3D (Class Ifc4::IfcOffsetCurve3D)

• public Ifc4::IfcPcurve (Class Ifc4::IfcPcurve)

• public Ifc4::IfcSurfaceCurve (Class Ifc4::IfcSurfaceCurve)

Class Documentation

class Ifc4::IfcCurve : public Ifc4::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

Informal proposition:

A curve shall be arcwise connected A curve shall have an arc length greater than zero.

Subclassed by Ifc4::IfcBoundedCurve, Ifc4::IfcConic, Ifc4::IfcLine, Ifc4::IfcOffsetCurve2D, Ifc4::IfcOffsetCurve3D, Ifc4::IfcPcurve, Ifc4::IfcSurfaceCurve

Public Types

typedef IfcTemplatedEntityList<IfcCurve> list

Public Functions

const IfcParse::entity &declaration() const

IfcCurve(IfcEntityInstanceData *e)

IfcCurve()

Public Static Functions

const IfcParse::entity &Class()