IFC 4.3.0.1 (IFC4X3_TC1)

8.20.3.17 IfcTopologicalRepresentationItem

ABSTRACT This definition may not be instantiated

8.20.3.17.1 Semantic definition

8.20.3.17.2 Entity inheritance

8.20.3.17.3 Attributes

# Attribute Type Description
IfcRepresentationItem (2)
LayerAssignment SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems

Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.

StyledByItem SET [0:1] OF IfcStyledItem FOR Item

Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.

Table 8.20.3.17.A

8.20.3.17.4 Formal representation

ENTITY IfcTopologicalRepresentationItem
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcConnectedFaceSet
	,IfcEdge
	,IfcFace
	,IfcFaceBound
	,IfcLoop
	,IfcPath
	,IfcVertex))
 SUBTYPE OF (IfcRepresentationItem);
END_ENTITY;

8.20.3.17.5 References