4.1.7.1.8.2.1 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 table 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 4.1.7.1.8.2.1.A
General UsageTable 4.1.7.1.8.2.1.B