4.8.1.8 Lighting Geometry

Elements emitting light provide a 'Lighting' representation. Examples of such elements include lamps and light fixtures. Such representation may be used for 3D rendering or lighting design.

The representation identifier and type and the only allowed single representation item of the 'Lighting' representation are:

Figure 103 illustrates an instance diagram.

Lighting GeometryIfcElementIfcProductDefinitionShapeIfcShapeRepresentationIfcGeometricRepresentationContextIfcLabelIfcLabelIfcLightSourceIfcColourRgb

Figure 103 — Lighting Geometry

mvdXML Specification
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="a0002f8b-7b38-44ff-9bbb-862d6ccd54b1" name="Lighting Geometry" applicableSchema="IFC4" applicableEntity="IfcElement">
  <Rules>
    <AttributeRule AttributeName="Representation">
      <EntityRules>
        <EntityRule EntityName="IfcProductDefinitionShape">
          <AttributeRules>
            <AttributeRule AttributeName="Representations">
              <EntityRules>
                <EntityRule EntityName="IfcShapeRepresentation">
                  <AttributeRules>
                    <AttributeRule AttributeName="ContextOfItems">
                      <EntityRules>
                        <EntityRule EntityName="IfcGeometricRepresentationContext" />
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
                      <EntityRules>
                        <EntityRule EntityName="IfcLabel">
                          <AttributeRules>
                            <AttributeRule Description="Value=Lighting" AttributeName="Value=Lighting" />
                          </AttributeRules>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Type" AttributeName="RepresentationType">
                      <EntityRules>
                        <EntityRule EntityName="IfcLabel">
                          <AttributeRules>
                            <AttributeRule Description="Value=LightSource" AttributeName="Value=LightSource" />
                          </AttributeRules>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Items" AttributeName="Items">
                      <EntityRules>
                        <EntityRule EntityName="IfcLightSource">
                          <AttributeRules>
                            <AttributeRule AttributeName="LightColour">
                              <EntityRules>
                                <EntityRule EntityName="IfcColourRgb" />
                              </EntityRules>
                            </AttributeRule>
                          </AttributeRules>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                  </AttributeRules>
                </EntityRule>
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="Name" />
            <AttributeRule AttributeName="Description" />
          </AttributeRules>
        </EntityRule>
      </EntityRules>
    </AttributeRule>
  </Rules>
</ConceptTemplate>

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