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	C
1	VertexGeometry	IfcPoint	[1:1]	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	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

Formal representations

XSD 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)