IFC 4.3.0.1 (IFC4X3_TC1)

4.8.1.8.2.1 FootPrint GeomSet PolyCurve Geometry

This specialization of the footprint representation uses indexed curves to represent boundaries.

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 IfcProduct IfcProduct 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. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] IfcProductDefinitionShape IfcProductDefinitionShape 1. Name [0:1] 2. Description [0:1] 3. Representations [1:?]      ShapeOfProduct [1:?]      HasShapeAspects [0:?] IfcProduct:Representation1->IfcProductDefinitionShape:IfcProductDefinitionShape0 IfcShapeRepresentation IfcShapeRepresentation 1. ContextOfItems [1:1] Identifier 2. RepresentationIdentifier [0:1] Type 3. RepresentationType [0:1] Items 4. Items [1:?]      RepresentationMap [0:1]      LayerAssignments [0:?]      OfProductRepresentation [0:?]      OfShapeAspect [0:1] IfcProductDefinitionShape:Representations1->IfcShapeRepresentation:IfcShapeRepresentation0 IfcLabel_0 IfcLabel IfcShapeRepresentation:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 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_1 IfcLabel IfcShapeRepresentation:RepresentationType1->IfcLabel_1:IfcLabel0 IfcGeometricCurveSet IfcGeometricCurveSet      LayerAssignment [0:1]      StyledByItem [0:1] 1. Elements [1:?] IfcShapeRepresentation:Items1->IfcGeometricCurveSet:IfcGeometricCurveSet0 constraint_0 =FootPrint IfcLabel_0->constraint_0 constraint_1 =GeometricCurveSet IfcLabel_1->constraint_1 IfcIndexedPolyCurve IfcIndexedPolyCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [1:1] 2. Segments [1:?] 3. SelfIntersect [0:1] IfcGeometricCurveSet:Elements1->IfcIndexedPolyCurve:IfcIndexedPolyCurve0 IfcCartesianPointList2D IfcCartesianPointList2D      LayerAssignment [0:1]      StyledByItem [0:1] 1. CoordList [1:?] 2. TagList [1:?] IfcIndexedPolyCurve:Points1->IfcCartesianPointList2D:IfcCartesianPointList2D0 IfcArcIndex IfcArcIndex IfcIndexedPolyCurve:Segments1->IfcArcIndex:IfcArcIndex0 IfcLineIndex IfcLineIndex IfcIndexedPolyCurve:Segments1->IfcLineIndex:IfcLineIndex0 IfcBoolean IfcBoolean IfcIndexedPolyCurve:SelfIntersect1->IfcBoolean:IfcBoolean0 IfcLengthMeasure IfcLengthMeasure IfcCartesianPointList2D:CoordList1->IfcLengthMeasure:IfcLengthMeasure0
Figure 4.8.1.8.2.1.A

General Usage

ApplicableEntity
IfcElement
Table 4.8.1.8.2.1.B