4.1.7.1.3.1 Axis 2D Geometry
The 'Axis' representation using 'Curve2D' representation type is predominately used to align material layer sets to geometric representations of standard walls.
The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:
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
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
IfcBoundedCurve
IfcBoundedCurve
LayerAssignment
[0:1]
StyledByItem
[0:1]
IfcShapeRepresentation :Items1->IfcBoundedCurve :IfcBoundedCurve0
constraint_0
=Axis
IfcLabel_0->constraint_0
constraint_1
=Curve2D
IfcLabel_1->constraint_1
Figure 4.1.7.1.3.1.A
General UsageTable 4.1.7.1.3.1.B