8.14.3.2 IfcLightIntensityDistribution
8.14.3.2.1 Semantic definition
IfcLightIntensityDistribution defines the the luminous intensity of a light source that changes according to the direction of the ray. It is based on some standardized light distribution curves, which are defined by the LightDistributionCurve attribute.
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New entity in IFC2x2.
8.14.3.2.2 Entity inheritance
8.14.3.2.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcLightIntensityDistribution (2) | |||
| 1 | LightDistributionCurve | IfcLightDistributionCurveEnum |
Standardized light distribution curve used to define the luminous intensity of the light in all directions. |
| 2 | DistributionData | LIST [1:?] OF IfcLightDistributionData |
Light distribution data applied to the light source. It is defined by a list of main plane angles (B or C according to the light distribution curve chosen) that includes (for each B or C angle) a second list of secondary plane angles (the β or γ angles) and the according luminous intensity distribution measures. |
8.14.3.2.4 Formal representation
ENTITY IfcLightIntensityDistribution;
LightDistributionCurve : IfcLightDistributionCurveEnum;
DistributionData : LIST [1:?] OF IfcLightDistributionData;
END_ENTITY;
