IfcLightIntensityDistribution

Definition from IAI: The 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.

> HISTORY: New entity in Release IFC2x Edition 2.

EXPRESS specification:

ENTITY IfcLightIntensityDistribution;
LightDistributionCurve | : | IfcLightDistributionCurveEnum;
DistributionData | : | LIST [1:?] OF IfcLightDistributionData;
END_ENTITY;

Attribute definitions:

LightDistributionCurve | : | Standardized light distribution curve used to define the luminous intensity of the light in all directions.
DistributionData | : | 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.

Inheritance graph

ENTITY IfcLightIntensityDistribution;
ENTITY IfcLightIntensityDistribution;
LightDistributionCurve | : | IfcLightDistributionCurveEnum;
DistributionData | : | LIST [1:?] OF IfcLightDistributionData;
END_ENTITY;