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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 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionElementType.htm'>IfcDistributionElementType</a> 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] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a> IfcRepresentationMap 1. MappingOrigin [1:1] 2. MappedRepresentation [1:1]      HasShapeAspects [0:?]      MapUsage [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionElementType.htm'>IfcDistributionElementType</a>:RepresentationMaps1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:IfcRepresentationMap0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a> 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] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:MappedRepresentation1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a>:IfcShapeRepresentation0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a> IfcAxis2Placement3D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. Axis [0:1] 3. RefDirection [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:MappingOrigin1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a>:IfcAxis2Placement3D0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement2D.htm'>IfcAxis2Placement2D</a> IfcAxis2Placement2D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. RefDirection [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:MappingOrigin1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement2D.htm'>IfcAxis2Placement2D</a>:IfcAxis2Placement2D0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGeometricRepresentationContext.htm'>IfcGeometricRepresentationContext</a> 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] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a>:ContextOfItems1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGeometricRepresentationContext.htm'>IfcGeometricRepresentationContext</a>:IfcGeometricRepresentationContext0 IfcLabel_0 IfcLabel <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a>:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 IfcLabel_1 IfcLabel <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a>:RepresentationType1->IfcLabel_1:IfcLabel0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLightSource.htm'>IfcLightSource</a> IfcLightSource      LayerAssignment [0:1]      StyledByItem [0:1] 1. Name [0:1] 2. LightColour [1:1] 3. AmbientIntensity [0:1] 4. Intensity [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcShapeRepresentation.htm'>IfcShapeRepresentation</a>:Items1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLightSource.htm'>IfcLightSource</a>:IfcLightSource0
Figure 4.1.8.1.4.A

General Usage

ApplicableEntity
IfcDistributionFlowElementType
Table 4.1.8.1.4.B

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