Class Ifc4::IfcVector

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4::IfcVector : public Ifc4::IfcGeometricRepresentationItem

Definition from ISO/CD 10303-42:1992: The vector is defined in terms of the direction and magnitude of the vector. The value of the magnitude attribute defines the magnitude of the vector.

NOTE: The magnitude of the vector can not be reliable calculated from the components of the Orientation attribute. This form of representation was selected to reduce problems with numerical instability. For example a vector of magnitude 2.0 mm and equally inclined to the coordinate axes could be represented with Orientation attribute of (1.0,1.0,1.0).

NOTE: Corresponding ISO 10303 entity: vector. Please refer to ISO/IS 10303-42:1994, p.27 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

Public Types

typedef IfcTemplatedEntityList<IfcVector> list

Public Functions

::Ifc4::IfcDirection *Orientation() const

The direction of the vector.

void setOrientation(::Ifc4::IfcDirection *v)
double Magnitude() const

The magnitude of the vector. All vectors of Magnitude 0.0 are regarded as equal in value regardless of the orientation attribute.

void setMagnitude(double v)
const IfcParse::entity &declaration() const
IfcVector(IfcEntityInstanceData *e)
IfcVector(::Ifc4::IfcDirection *v1_Orientation, double v2_Magnitude)

Public Static Functions

const IfcParse::entity &Class()