IfcConnectedFaceSet

Natural language names
deGruppe verbundender Flächen
enConnected Face Set
frEnsemble de faces connectées
Semantic definitions at the entity
Entity definition

NOTE  Definition according to ISO/CD 10303-42:1992
A connected_face_set is a set of faces such that the domain of faces together with their bounding edges and vertices is connected.
NOTE  Entity adapted from connected_face_set defined in ISO 10303-42.
HISTORY  New entity in IFC1.0

Informal Propositions:

  1. The union of the domains of the faces and their bounding loops shall be arcwise connected.
Attribute definitions
#AttributeTypeCardinalityDescription C
1CfsFacesIfcFaceS[1:?] The set of faces arcwise connected along common edges or vertices.X
Inherited definitions from supertypes
Entity inheritance IfcClosedShell IfcOpenShell IfcTopologicalRepresentationItem IfcRepresentationItem
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
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. 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. X
IfcTopologicalRepresentationItem
IfcConnectedFaceSet
1CfsFacesIfcFaceS[1:?] The set of faces arcwise connected along common edges or vertices.X
Formal representations
XSD Specification
 <xs:element name="IfcConnectedFaceSet" type="ifc:IfcConnectedFaceSet" substitutionGroup="ifc:IfcTopologicalRepresentationItem" nillable="true"/>
 <xs:complexType name="IfcConnectedFaceSet">
  <xs:complexContent>
   <xs:extension base="ifc:IfcTopologicalRepresentationItem">
    <xs:sequence>
     <xs:element name="CfsFaces">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcFace" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcFace"/>
       <xs:attribute ref="ifc:cType" fixed="set"/>
       <xs:attribute ref="ifc:arraySize" use="optional"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcConnectedFaceSet
 SUPERTYPE OF(ONEOF(IfcClosedShell, IfcOpenShell))
 SUBTYPE OF (IfcTopologicalRepresentationItem);
  CfsFaces : SET [1:?] OF IfcFace;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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