IfcParameterizedProfileDef

Semantic definitions at the entity

Entity definition

The parameterized profile definition defines a 2D position coordinate system to which the parameters of the different profiles relate to. All profiles are defined centric to the origin of the position coordinate system, or more specific, the origin [0.,0.] shall be in the center of the bounding box ~~gravity~~ of the profile.

The Position attribute of the IfcParameterizedProfileDef is used to position the profile within the XY plane of the underlying coordinate system of the swept surface geometry, the swept area solid or the sectioned spine. It can be used to position the profile at any cardinal point that becomes the origin [0.,0.,0.] of the extruded or rotated surface or solid.

HISTORY New entity in Release IFC2x Edition 2.

IFC2x Platform CHANGE The IfcParameterizedProfileDef is introduced as an intermediate new abstract entity that unifies the definition and usage of the position coordinate system for all parameterized profiles. The Position attribute has been removed at all subtypes (like IfcRectangleProfileDef, IfcCircleProfileDef, etc.).
IFC2x Edition 3 CHANGE All profile origins are now in the center of the bounding box.

Attribute definitions

#	Attribute	Type	Cardinality	Description	A
3	Position	IfcAxis2Placement2D	[1:1]	Position coordinate system of the parameterized profile definition.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	A
IfcProfileDef
1	ProfileType	IfcProfileTypeEnum	[1:1]	Defines the type of geometry into which this profile definition shall be resolved, either a curve or a surface area. In case of curve the profile should be referenced by a swept surface, in case of area the profile should be referenced by a swept area solid.	X
2	ProfileName	-		This attribute is out of scope for this model view definition and shall not be set.
IfcParameterizedProfileDef
3	Position	IfcAxis2Placement2D	[1:1]	Position coordinate system of the parameterized profile definition.	X

Formal representations

XSD Specification

 <xs:element name="IfcParameterizedProfileDef" type="ifc:IfcParameterizedProfileDef" abstract="true" substitutionGroup="ifc:IfcProfileDef" nillable="true"/>

 <xs:complexType name="IfcParameterizedProfileDef" abstract="true">

  <xs:complexContent>

   <xs:extension base="ifc:IfcProfileDef">

    <xs:sequence>

     <xs:element name="Position" type="ifc:IfcAxis2Placement2D" nillable="true"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcParameterizedProfileDef

 ABSTRACT SUPERTYPE OF(ONEOF(IfcCShapeProfileDef, IfcCircleProfileDef, IfcIShapeProfileDef, IfcLShapeProfileDef, IfcRectangleProfileDef, IfcTShapeProfileDef, IfcUShapeProfileDef, IfcZShapeProfileDef))

 SUBTYPE OF (IfcProfileDef);

  Position : IfcAxis2Placement2D;

END_ENTITY;

 EXPRESS-G diagram