IfcDerivedProfileDef

IfcDerivedProfileDef

Definition from IAI: The IfcDerivedProfileDef defines the profile by transformation from the parent profile. The transformation is given by a two dimensional transformation operator. Transformation include translation, rotation, and scaling. The latter can be uniform or non uniform. The derived profiles may be used to define sectioned spines.

HISTORY New entity in IFC Release 2x.
ISSUE: See issues for changes made in IFC Release 2x.

ILLUSTRATION:

	Parameter The IfcDerivedProfileDef is defined using the IfcCartesianTransformationOperator2D (CTO), which is applied to the parent profile definition. The example shows a uniform transformation.
	Parameter non uniform transformations can be created by using the IfcCartesianTransformationOperator2DnonUniform as a subtype of the 2D CTO.

Table: Derivation of derived profile definition

EXPRESS specification:

ENTITY IfcDerivedProfileDef

SUBTYPE OF (

IfcProfileDef);

ParentProfile

IfcProfileDef;

Operator

IfcCartesianTransformationOperator2D;

Label

OPTIONAL IfcLabel;

WHERE

WR1

SELF\IfcProfileDef.ProfileType = ParentProfile.ProfileType;

END_ENTITY;

Attribute definitions:

ParentProfile	:	The parent profile provides the origin of the transformation.
Operator	:	Transformation operator applied to the parent profile.
Label	:	The name by which the transformation may be refered to. The actual meaning of the name has to be defined in the context of applications.