|Flächenmodell (basierend auf Einzelflächen)|
|Face Based Surface Model|
The IfcFaceBasedSurfaceModel represents the a shape by connected face sets. The connected faces have a dimensionality 2 and are placed in a coordinate space of dimensionality 3.
NOTE Definition according to ISO/CD 10303-42:1992
A face based surface model is described by a set of connected face sets of dimensionality 2. The connected face sets shall not intersect except at edges and vertices, except that a face in one connected face set may overlap a face in another connected face set, provided the face boundaries are identical. There shall be at least one connected face set.
A connected face set may exist independently of a surface model.
NOTE Entity adapted from face_based_surface_model defined in ISO 10303-42.
HISTORY New entity in IFC2x.
IFC4 CHANGE The entity has been deprecated and shall not be used. The entity IfcFacetedBrep shall be used instead.
|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|
|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|
|1||FbsmFaces||IfcConnectedFaceSet||S[1:?]||The set of connected face sets comprising the face based surface model.||X|
|IfcDimensionCount||[1:1]||The space dimensionality of this class, it is always 3.||X|
<xs:element name="IfcFaceBasedSurfaceModel" type="ifc:IfcFaceBasedSurfaceModel" substitutionGroup="ifc:IfcGeometricRepresentationItem" nillable="true"/>
<xs:element ref="ifc:IfcConnectedFaceSet" maxOccurs="unbounded"/>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcConnectedFaceSet"/>
<xs:attribute ref="ifc:cType" fixed="set"/>
<xs:attribute ref="ifc:arraySize" use="optional"/>
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