4.1.8.1.4 Type Lighting Geometry
For elements that emit light such as lamps or light fixtures, this represents the light emission of the item having IfcShapeRepresentation .RepresentationType of 'LightSource' and containing one or more IfcLightSource subtypes.
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
IfcDistributionElementType
IfcDistributionElementType
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:?]
9. ElementType
[0:1]
IfcRepresentationMap
IfcRepresentationMap
1. MappingOrigin
[1:1]
2. MappedRepresentation
[1:1]
HasShapeAspects
[0:?]
MapUsage
[0:?]
IfcDistributionElementType :RepresentationMaps1->IfcRepresentationMap :IfcRepresentationMap0
IfcShapeRepresentation
IfcShapeRepresentation
1. ContextOfItems
[1:1]
2. RepresentationIdentifier
[0:1]
Type
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
IfcLightSource
IfcLightSource
LayerAssignment
[0:1]
StyledByItem
[0:1]
1. Name
[0:1]
2. LightColour
[1:1]
3. AmbientIntensity
[0:1]
4. Intensity
[0:1]
IfcShapeRepresentation :Items1->IfcLightSource :IfcLightSource0
Figure 4.1.8.1.4.A
General UsageTable 4.1.8.1.4.B