IFC 4.3.0.1 (IFC4X3) development

4.9.1.3.2 Type Body AdvancedBrep Geometry

The following diagram shows the generic classes and relationships used when applying this concept. In addition, concepts may have particular importance to common or standardised industry practices and scenarios. For these specific usage scenarios, the tables below shows a recommended list of general usage patterns that users may adopt.

G IfcTypeProduct IfcTypeProduct 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ApplicableOccurrence [0:1] 6. HasPropertySets [1:?]      Types [0:1] 7. RepresentationMaps [1:?] 8. Tag [0:1]      ReferencedBy [0:?] IfcRepresentationMap IfcRepresentationMap 1. MappingOrigin [1:1] 2. MappedRepresentation [1:1]      HasShapeAspects [0:?]      MapUsage [0:?] IfcTypeProduct:RepresentationMaps1->IfcRepresentationMap:IfcRepresentationMap0 IfcShapeRepresentation IfcShapeRepresentation 1. ContextOfItems [1:1] 2. RepresentationIdentifier [0:1] RepresentationType 3. RepresentationType [0:1] Geometry 4. Items [1:?]      RepresentationMap [0:1]      LayerAssignments [0:?]      OfProductRepresentation [0:?]      OfShapeAspect [0:1] IfcRepresentationMap:MappedRepresentation1->IfcShapeRepresentation:IfcShapeRepresentation0 IfcAxis2Placement3D IfcAxis2Placement3D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. Axis [0:1] 3. RefDirection [0:1] IfcRepresentationMap:MappingOrigin1->IfcAxis2Placement3D:IfcAxis2Placement3D0 IfcAxis2Placement2D IfcAxis2Placement2D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. RefDirection [0:1] IfcRepresentationMap:MappingOrigin1->IfcAxis2Placement2D:IfcAxis2Placement2D0 IfcGeometricRepresentationContext IfcGeometricRepresentationContext 1. ContextIdentifier [0:1] 2. ContextType [0:1]      RepresentationsInContext [0:?] 3. CoordinateSpaceDimension [1:1] 4. Precision [0:1] 5. WorldCoordinateSystem [1:1] 6. TrueNorth [0:1]      HasSubContexts [0:?]      HasCoordinateOperation [0:1] IfcShapeRepresentation:ContextOfItems1->IfcGeometricRepresentationContext:IfcGeometricRepresentationContext0 IfcLabel_0 IfcLabel IfcShapeRepresentation:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 IfcLabel_1 IfcLabel IfcShapeRepresentation:RepresentationType1->IfcLabel_1:IfcLabel0 IfcAdvancedBrep IfcAdvancedBrep      LayerAssignment [0:1]      StyledByItem [0:1] 1. Outer [1:1] IfcShapeRepresentation:Items1->IfcAdvancedBrep:IfcAdvancedBrep0 IfcClosedShell IfcClosedShell      LayerAssignment [0:1]      StyledByItem [0:1] 1. CfsFaces [1:?] IfcAdvancedBrep:Outer1->IfcClosedShell:IfcClosedShell0 IfcAdvancedFace IfcAdvancedFace      LayerAssignment [0:1]      StyledByItem [0:1] 1. Bounds [1:?]      HasTextureMaps [0:?] 2. FaceSurface [1:1] 3. SameSense [1:1] IfcClosedShell:CfsFaces1->IfcAdvancedFace:IfcAdvancedFace0 IfcFaceOuterBound IfcFaceOuterBound      LayerAssignment [0:1]      StyledByItem [0:1] 1. Bound [1:1] 2. Orientation [1:1] IfcAdvancedFace:Bounds1->IfcFaceOuterBound:IfcFaceOuterBound0 IfcBSplineSurfaceWithKnots IfcBSplineSurfaceWithKnots      LayerAssignment [0:1]      StyledByItem [0:1] 1. UDegree [1:1] 2. VDegree [1:1] 3. ControlPointsList [2:?] 4. SurfaceForm [1:1] 5. UClosed [1:1] 6. VClosed [1:1] 7. SelfIntersect [1:1] 8. UMultiplicities [2:?] 9. VMultiplicities [2:?] 10. UKnots [2:?] 11. VKnots [2:?] 12. KnotSpec [1:1] IfcAdvancedFace:FaceSurface1->IfcBSplineSurfaceWithKnots:IfcBSplineSurfaceWithKnots0 IfcEdgeLoop IfcEdgeLoop      LayerAssignment [0:1]      StyledByItem [0:1] 1. EdgeList [1:?] IfcFaceOuterBound:Bound1->IfcEdgeLoop:IfcEdgeLoop0 IfcBoolean_2 IfcBoolean IfcFaceOuterBound:Orientation1->IfcBoolean_2:IfcBoolean0 IfcCartesianPoint_3 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcBSplineSurfaceWithKnots:ControlPointsList1->IfcCartesianPoint_3:IfcCartesianPoint0 IfcInteger_2 IfcInteger IfcBSplineSurfaceWithKnots:UDegree1->IfcInteger_2:IfcInteger0 IfcInteger_3 IfcInteger IfcBSplineSurfaceWithKnots:VDegree1->IfcInteger_3:IfcInteger0 IfcBSplineSurfaceForm IfcBSplineSurfaceForm IfcBSplineSurfaceWithKnots:SurfaceForm1->IfcBSplineSurfaceForm:IfcBSplineSurfaceForm0 IfcLogical_2 IfcLogical IfcBSplineSurfaceWithKnots:UClosed1->IfcLogical_2:IfcLogical0 IfcLogical_3 IfcLogical IfcBSplineSurfaceWithKnots:VClosed1->IfcLogical_3:IfcLogical0 IfcLogical_4 IfcLogical IfcBSplineSurfaceWithKnots:SelfIntersect1->IfcLogical_4:IfcLogical0 IfcInteger_4 IfcInteger IfcBSplineSurfaceWithKnots:UMultiplicities1->IfcInteger_4:IfcInteger0 IfcInteger_5 IfcInteger IfcBSplineSurfaceWithKnots:VMultiplicities1->IfcInteger_5:IfcInteger0 IfcParameterValue_1 IfcParameterValue IfcBSplineSurfaceWithKnots:UKnots1->IfcParameterValue_1:IfcParameterValue0 IfcParameterValue_2 IfcParameterValue IfcBSplineSurfaceWithKnots:VKnots1->IfcParameterValue_2:IfcParameterValue0 IfcKnotType_1 IfcKnotType IfcBSplineSurfaceWithKnots:KnotSpec1->IfcKnotType_1:IfcKnotType0 IfcOrientedEdge IfcOrientedEdge      LayerAssignment [0:1]      StyledByItem [0:1] 1. EdgeStart [1:1] 2. EdgeEnd [1:1] 3. EdgeElement [1:1] 4. Orientation [1:1] IfcEdgeLoop:EdgeList1->IfcOrientedEdge:IfcOrientedEdge0 IfcEdgeCurve IfcEdgeCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. EdgeStart [1:1] 2. EdgeEnd [1:1] 3. EdgeGeometry [1:1] 4. SameSense [1:1] IfcOrientedEdge:EdgeElement1->IfcEdgeCurve:IfcEdgeCurve0 IfcBoolean_1 IfcBoolean IfcOrientedEdge:Orientation1->IfcBoolean_1:IfcBoolean0 IfcBSplineCurveWithKnots IfcBSplineCurveWithKnots      LayerAssignment [0:1]      StyledByItem [0:1] 1. Degree [1:1] 2. ControlPointsList [2:?] 3. CurveForm [1:1] 4. ClosedCurve [1:1] 5. SelfIntersect [1:1] 6. KnotMultiplicities [2:?] 7. Knots [2:?] 8. KnotSpec [1:1] IfcEdgeCurve:EdgeGeometry1->IfcBSplineCurveWithKnots:IfcBSplineCurveWithKnots0 IfcVertexPoint_0 IfcVertexPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. VertexGeometry [1:1] IfcEdgeCurve:EdgeStart1->IfcVertexPoint_0:IfcVertexPoint0 IfcVertexPoint_1 IfcVertexPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. VertexGeometry [1:1] IfcEdgeCurve:EdgeEnd1->IfcVertexPoint_1:IfcVertexPoint0 IfcBoolean_0 IfcBoolean IfcEdgeCurve:SameSense1->IfcBoolean_0:IfcBoolean0 IfcInteger_0 IfcInteger IfcBSplineCurveWithKnots:Degree1->IfcInteger_0:IfcInteger0 IfcCartesianPoint_0 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcBSplineCurveWithKnots:ControlPointsList1->IfcCartesianPoint_0:IfcCartesianPoint0 IfcBSplineCurveForm IfcBSplineCurveForm IfcBSplineCurveWithKnots:CurveForm1->IfcBSplineCurveForm:IfcBSplineCurveForm0 IfcLogical_0 IfcLogical IfcBSplineCurveWithKnots:ClosedCurve1->IfcLogical_0:IfcLogical0 IfcLogical_1 IfcLogical IfcBSplineCurveWithKnots:SelfIntersect1->IfcLogical_1:IfcLogical0 IfcInteger_1 IfcInteger IfcBSplineCurveWithKnots:KnotMultiplicities1->IfcInteger_1:IfcInteger0 IfcParameterValue_0 IfcParameterValue IfcBSplineCurveWithKnots:Knots1->IfcParameterValue_0:IfcParameterValue0 IfcKnotType_0 IfcKnotType IfcBSplineCurveWithKnots:KnotSpec1->IfcKnotType_0:IfcKnotType0 IfcCartesianPoint_1 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcVertexPoint_0:VertexGeometry1->IfcCartesianPoint_1:IfcCartesianPoint0 IfcCartesianPoint_2 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcVertexPoint_1:VertexGeometry1->IfcCartesianPoint_2:IfcCartesianPoint0
Figure 4.9.1.3.2.A

General Usage

ApplicableEntity
IfcTypeProduct
Table 4.9.1.3.2.B

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