IfcVertexPoint

Natural language names
Vertexpunkt - Topologie
Vertex Point
Sommet (point)
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:

  1. The domain of the vertex is formally defined to be the domain of its vertex point.
Attribute definitions
#AttributeTypeCardinalityDescription G
1VertexGeometryIfcPoint The geometric point, which defines the position in geometric space of the vertex. X
Inherited definitions from supertypes
Entity inheritance IfcVertex IfcTopologicalRepresentationItem IfcRepresentationItem
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRepresentationItem
LayerAssignmentIfcPresentationLayerAssignment
@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
StyledByItemIfcStyledItem
@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
1VertexGeometryIfcPoint 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;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcPointOrVertexPoint

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