IFC (IFC4X3_ADD2) official IfcFaceBound Semantic definition Entity inheritance 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
IfcFaceBound (2)
1 Bound IfcLoop

The loop which will be used as a face boundary.

2 Orientation IfcBoolean

This indicated whether (TRUE) or not (FALSE) the loop has the same sense when used to bound the face as when first defined. If sense is FALSE the senses of all its component oriented edges are implicitly reversed when used in the face.

Table Examples Formal representation

ENTITY IfcFaceBound
 SUBTYPE OF (IfcTopologicalRepresentationItem);
	Bound : IfcLoop;
	Orientation : IfcBoolean;
END_ENTITY; References

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Is this page difficult to understand? Let us know! Changelog IFC4

  • attribute Orientation type, Changed from "boolean" to "IfcBoolean"