8.20.3.16 IfcSubedge

8.20.3.16.1 Semantic definition

Informal Propositions

The domain of the subedge is formally defined to be the domain of the parent edge, as trimmed by the subedge start vertex and subedge end vertex.
The start vertex and end vertex shall be within the union of the domains of the vertices of the parent edge and the domain of the parent edge.

#	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. IFC2x3-CHANGE The inverse attribute LayerAssignments has been added. IFC4-CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
	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. IFC2x3-CHANGE The inverse attribute StyledByItem has been added.
IfcEdge (2)
1	EdgeStart	IfcVertex	Start point (vertex) of the edge.
2	EdgeEnd	IfcVertex	End point (vertex) of the edge. The same vertex can be used for both EdgeStart and EdgeEnd.
Click to show 4 hidden inherited attributes
IfcSubedge (1)
3	ParentEdge	IfcEdge	The Edge, or Subedge, which contains the Subedge.

Table 8.20.3.16.A

 ENTITY IfcSubedge
 SUBTYPE OF (IfcEdge);
	ParentEdge : IfcEdge;
END_ENTITY;