IFC 4.3.2.20241204 (IFC4X3_ADD2) under development

8.14.3.3 IfcLightSource

ABSTRACT This definition may not be instantiated

8.14.3.3.1 Semantic definition

8.14.3.3.2 Entity inheritance

8.14.3.3.3 Attributes

# Attribute Type Description
IfcRepresentationItem (2)
Click to show 2 hidden inherited attributes
IfcLightSource (4)
1 Name OPTIONAL IfcLabel

The name given to the light source in presentation.

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.

3 AmbientIntensity OPTIONAL 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).

4 Intensity OPTIONAL IfcNormalisedRatioMeasure

Definition from VRML97 - ISO/IEC 14772-1:1997: The intensity field specifies the brightness of the direct emission from the light. Light intensity may range from 0.0 (no light emission) to 1.0 (full intensity).

Table 8.14.3.3.A

8.14.3.3.4 Formal representation

ENTITY IfcLightSource
ABSTRACT SUPERTYPE OF (ONEOF
(IfcLightSourceAmbient
,IfcLightSourceDirectional
,IfcLightSourceGoniometric
,IfcLightSourcePositional))
SUBTYPE OF (IfcGeometricRepresentationItem);
Name : OPTIONAL IfcLabel;
LightColour : IfcColourRgb;
AmbientIntensity : OPTIONAL IfcNormalisedRatioMeasure;
Intensity : OPTIONAL IfcNormalisedRatioMeasure;
END_ENTITY;

8.14.3.3.5 References

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4 contributor(s):
Last change: Improve definition split (#876) * bring back headers headers were previously removed by mistake, now bringing them back * add new lines and rename the tag add the word 'short' in it * unify newlines make exactly one newline before and two after the tag * resolving typos Because bringing back headers required to go back in time to previous version, I'm now re-resolving the issues: #861, #860, #856 by ArturTomczak on 7/16/2024, 2:07:28 PM

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