IfcLightDistributionData
Definition from IAI: The IfcLightDistributionData defines
the luminous intensity of a light source given at a particular main plane
angle. It is based on some standardized light distribution curves, the
MainPlaneAngle is either the
- A angle; if the IfcLightDistributionCurveEnum is set to
TYPE_A
- B angle; if the IfcLightDistributionCurveEnum is set to
TYPE_B
- C angle; if the IfcLightDistributionCurveEnum is set to
TYPE_C
For each MainPlaneAngle (considered as being the row of a table)
a list of SecondaryPlaneAngle's are given (considered to be the columns
of a table). They are either the:
- α angle; if the IfcLightDistributionCurveEnum is set to
TYPE_A
- β angle; if the IfcLightDistributionCurveEnum is set to
TYPE_B
- γ angle; if the IfcLightDistributionCurveEnum is set to
TYPE_C
For each pair of MainPlaneAngle and SecondaryPlaneAngle
the LuminousIntensity is provides (the unit is given by the
IfcUnitAssignment refering to the LuminousIntensityDistributionUnit,
normally cd/klm).
HISTORY: New entity in Release IFC2x
Edition 2.
EXPRESS specification:
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| ENTITY IfcLightDistributionData;
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Attribute definitions:
| MainPlaneAngle
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The main plane angle (A, B or C angles, according to the light distribution curve chosen).
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| SecondaryPlaneAngle
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The list of secondary plane angles (the α, β or γ angles) according to the light distribution curve chosen.
NOTE: The SecondaryPlaneAngle and LuminousIntensity lists are corresponding lists.
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| LuminousIntensity
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The luminous intensity distribution measure for this pair of main and secondary plane angles according
to the light distribution curve chosen.
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Inheritance graph
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| ENTITY IfcLightDistributionData;
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