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IfcReferenceGeometry

Definition from IAI: Supertype for various types of reference geometry entities with Placement attribute provided. Reference geometry entities can be used to define the connectivity in a network.

The reference geometry is given for potential use in future extensions of IFC.

HISTORY New entity in IFC Release 1.5. Has been renamed from IfcReferenceGeometryAid in IFC 2x.
ISSUE: See issues for changes made in IFC Release 2x.

EXPRESS specification:

ENTITY IfcReferenceGeometry
ABSTRACT SUPERTYPE OF (ONEOF(IfcReferenceEdge, IfcReferenceVertex, IfcReferenceFace));
Placement  :  OPTIONAL IfcAxis2Placement;
END_ENTITY;

Attribute definitions:

Placement  :  Placement, relative to another object in the project.

References (3):

Name Type Referred through Express-G
IfcReferenceEdge Entity
Supertype
Diagram 1
IfcReferenceFace Entity
Supertype
Diagram 1
IfcReferenceVertex Entity
Supertype
Diagram 1

Inheritance graph

ENTITY IfcReferenceGeometry;
ENTITY IfcReferenceGeometry;
Placement  :  OPTIONAL IfcAxis2Placement;
END_ENTITY;