注：定义根据ISO/CD 10303-42:1992

顶点是将其几何体定义为点的顶点。

注：实体改编自ISO 10303-42中定义的顶点。

IFC2x中的历史新实体。

 

非正式提议：

顶点的域被正式定义为其顶点的域。

 

 

 

#	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
IfcVertex
IfcVertexPoint
1	VertexGeometry	IfcPoint	[1:1]	The geometric point, which defines the position in geometric space of the vertex.	X

 

EXPRESS Specification

ENTITY IfcVertexPoint
 SUBTYPE OF (IfcVertex);
  VertexGeometry : IfcPoint;
END_ENTITY;