 | Lichtquelle - diffus |
 | Light Source Ambient |
 | Source de lumière ambiante |
NOTE Definition according to ISO 10303-46:
The light source ambient entity is a subtype of light source. It lights a surface independent of the surface's orientation and position.
NOTE Corresponding ISO 10303 entity: light_source_ambient. Please refer to ISO/IS 10303-46:1994, p. 31 for the final definition of the formal standard.
NOTE In addition to the attributes as defined in ISO 10303-46 the additional property from ISO/IEC 14772-1:1997 (VRML) AmbientIntensity is inherited from the supertype.
HISTORY New entity in IFC2x, renamed and enhanced in IFC2x2.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRepresentationItem | |||||
| LayerAssignment | IfcPresentationLayerAssignment @AssignedItems | S[0:1] | Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.
IFC2x3 CHANGE The inverse attribute LayerAssignments has been added. IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed. | X | |
| StyledByItem | IfcStyledItem @Item | S[0:1] | Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.
IFC2x3 CHANGE The inverse attribute StyledByItem has been added. | X | |
| IfcGeometricRepresentationItem | |||||
| IfcLightSource | |||||
| 1 | Name | IfcLabel | ? | The name given to the light source in presentation. | X |
| 2 | LightColour | IfcColourRgb | Definition from ISO/CD 10303-46:1992: Based on the current lighting model, the colour of the light to be used for shading. Definition from VRML97 - ISO/IEC 14772-1:1997: The color field specifies the spectral color properties of both the direct and ambient light emission as an RGB value. | X | |
| 3 | AmbientIntensity | IfcNormalisedRatioMeasure | ? | Definition from VRML97 - ISO/IEC 14772-1:1997: The ambientIntensity specifies the intensity of the ambient emission from the light. Light intensity may range from 0.0 (no light emission) to 1.0 (full intensity). | X |
| 4 | Intensity | IfcNormalisedRatioMeasure | ? | Definition from VRML97 - ISO/IEC 14772-1:1997: The intensity field specifies the brightness of the direct emission from the ligth. Light intensity may range from 0.0 (no light emission) to 1.0 (full intensity). | X |
| IfcLightSourceAmbient | |||||
<xs:element name="IfcLightSourceAmbient" type="ifc:IfcLightSourceAmbient" substitutionGroup="ifc:IfcLightSource" nillable="true"/>
<xs:complexType name="IfcLightSourceAmbient">
<xs:complexContent>
<xs:extension base="ifc:IfcLightSource"/>
</xs:complexContent>
</xs:complexType>
ENTITY IfcLightSourceAmbient
SUBTYPE OF (IfcLightSource);
END_ENTITY;
EXPRESS-G diagram
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