IfcVertexPoint

Semantic definitions at the entity

Entity definition

NOTE Definition according to ISO/CD 10303-42:1992
A vertex point is a vertex which has its geometry defined as a point.

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

HISTORY New entity in IFC2x.

Informal Propositions:

The domain of the vertex is formally defined to be the domain of its vertex point.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
1	VertexGeometry	IfcPoint		The geometric point, which defines the position in geometric space of the vertex.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
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. 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.	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. IFC2x3 CHANGE The inverse attribute StyledByItem has been added.	X
IfcTopologicalRepresentationItem
IfcVertex
IfcVertexPoint
1	VertexGeometry	IfcPoint		The geometric point, which defines the position in geometric space of the vertex.	X

Formal representations

XML Specification

 <xs:element name="IfcVertexPoint" type="ifc:IfcVertexPoint" substitutionGroup="ifc:IfcVertex" nillable="true"/>

 <xs:complexType name="IfcVertexPoint">

  <xs:complexContent>

   <xs:extension base="ifc:IfcVertex">

    <xs:sequence>

     <xs:element name="VertexGeometry" type="ifc:IfcPoint" nillable="true"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcVertexPoint

 SUBTYPE OF (IfcVertex);

  VertexGeometry : IfcPoint;

END_ENTITY;

 EXPRESS-G diagram

	Vertexpunkt - Topologie
	Vertex Point
	Sommet (point)