Class TIfcCartesianTransformationOperator

Fields

Unit

Declaration

type TIfcCartesianTransformationOperator = class abstract(TIfcRepresentationItem)

Description

An abstract supertype of different kinds of geometric transformations.

Spec: https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcCartesianTransformationOperator.htm

Hierarchy

TObject
TPersistent
TComponent
TIfcPersistent
TIfcRepresentationItem
TIfcCartesianTransformationOperator

Overview

Methods

	`function Scl: Single;`
	`function Scl2: Single; virtual;`
	`function Scl3: Single; virtual;`
	`function Axis1Vector: TVector3;`
	`function Axis2Vector: TVector3;`
	`function Axis3Vector: TVector3; virtual;`
	`procedure GetTransform(out Translation: TVector3; out Rotation: TVector4; out AScale: TVector3); virtual;`

Properties

	`property Axis1: TIfcDirection read FAxis1 write FAxis1;`
	`property Axis2: TIfcDirection read FAxis2 write FAxis2;`
	`property LocalOrigin: TIfcCartesianPoint read FLocalOrigin write FLocalOrigin;`
	`property Scale: TIfcReal read FScale write FScale;`

Description

Methods

	`function Scl: Single;`
The derived scale of the transformation, equal to scale if that is non-zero (it is zero if not specified in file), or 1.0 otherwise.

	`function Scl2: Single; virtual;`
The derived scale of the transformation along the axis 2 (normally the y axis).

	`function Scl3: Single; virtual;`
The derived scale of the transformation along the axis 3 (normally the z axis).

	`function Axis1Vector: TVector3;`
This item has no description.

	`function Axis2Vector: TVector3;`
This item has no description.

	`function Axis3Vector: TVector3; virtual;`
This item has no description.

	`procedure GetTransform(out Translation: TVector3; out Rotation: TVector4; out AScale: TVector3); virtual;`
This item has no description.

Properties

	`property Axis1: TIfcDirection read FAxis1 write FAxis1;`
The direction used to determine U[1], the derived X axis direction.

	`property Axis2: TIfcDirection read FAxis2 write FAxis2;`
The direction used to determine U[2], the derived Y axis direction.

	`property LocalOrigin: TIfcCartesianPoint read FLocalOrigin write FLocalOrigin;`
The required translation, specified as a cartesian point. The actual translation included in the transformation is from the geometric origin to the local origin.

	`property Scale: TIfcReal read FScale write FScale;`
The scaling value specified for the transformation.

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