8.20.3.3 IfcConnectedFaceSet

8.20.3.3.1 Semantic definition

Informal Propositions

1. The union of the domains of the faces and their bounding loops shall be arcwise connected.

8.20.3.3.2 Entity inheritance

1. • IfcRepresentationItem
2. • IfcTopologicalRepresentationItem
   • IfcGeometricRepresentationItem
   • IfcMappedItem
   • IfcStyledItem
3. • IfcConnectedFaceSet
   • IfcEdge
   • IfcFace
   • IfcFaceBound
   • IfcLoop
   • IfcPath
   • IfcVertex
4. • IfcClosedShell
   • IfcOpenShell

8.20.3.3.3 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.
Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes
IfcConnectedFaceSet (1)
1	CfsFaces	SET [1:?] OF IfcFace	The set of faces arcwise connected along common edges or vertices.

8.20.3.3.4 Examples

• 

  Surface Model

8.20.3.3.5 Formal representation

ENTITY IfcConnectedFaceSet
 SUPERTYPE OF (ONEOF
	(IfcClosedShell
	,IfcOpenShell))
 SUBTYPE OF (IfcTopologicalRepresentationItem);
	CfsFaces : SET [1:?] OF IfcFace;
END_ENTITY;

8.20.3.3.6 References

• IfcClosedShell
• IfcFaceBasedSurfaceModel
• IfcOpenShell
• IfcTopologicalRepresentationItem