IfcTopologicalRepresentationItem

Semantic definitions at the entity

Entity definition

NOTE Definition according to ISO/CD 10303-42:1992
The topological representation item is the supertype for all the topological representation items in the geometry resource.

NOTE Entity adapted from topological_representation_item defined in ISO 10303-42.

HISTORY New entity in IFC1.5

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcRepresentationItem
	LayerAssignment	IfcPresentationLayerAssignment @AssignedItems	S[0:1]	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.	X
	StyledByItem	IfcStyledItem @Item	S[0:1]	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.	X
IfcTopologicalRepresentationItem

Formal representations

XSD Specification

 <xs:element name="IfcTopologicalRepresentationItem" type="ifc:IfcTopologicalRepresentationItem" abstract="true" substitutionGroup="ifc:IfcRepresentationItem" nillable="true"/>

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

  <xs:complexContent>

   <xs:extension base="ifc:IfcRepresentationItem"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcTopologicalRepresentationItem

 ABSTRACT SUPERTYPE OF(ONEOF(IfcConnectedFaceSet, IfcEdge, IfcFace, IfcFaceBound, IfcLoop, IfcPath, IfcVertex))

 SUBTYPE OF (IfcRepresentationItem);

END_ENTITY;

 EXPRESS-G diagram

	Topologische Repräsentation - Element
	Topological Representation Item
	Item de représentation topologique