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8.14.2.2 IfcLightDistributionCurveEnum

8.14.2.2.1 Semantic definition

There are three kinds of light distribution curves, see Figure 1.

8.14.2.2.2 Type values

Type	Description
`TYPE_A`	Type A is basically not used. For completeness the Type A Photometry equals the Type B rotated 90° around the Z-Axis counter clockwise.
`TYPE_B`	Type B is sometimes used for floodlights. The B-Plane System has a horizontal axis. B-Angles are valid from -180° to +180° with B 0° at the bottom and B180°/B-180° at the top, β-Angles are valid from -90° to +90°. Figure B
`TYPE_C`	Type C is the recommended standard system. The C-Plane system equals a globe with a vertical axis. C-Angles are valid from 0° to 360°, γ-Angles are valid from 0° (south pole) to 180° (north pole). Figure C
`NOTDEFINED`	Not defined.

8.14.2.2.3 Formal representation

TYPE IfcLightDistributionCurveEnum = ENUMERATION OF
(TYPE_A
,TYPE_B
,TYPE_C
,NOTDEFINED);
END_TYPE;

8.14.2.2.4 References

IfcLightIntensityDistribution

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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 2024-07-16T16:07:28+02:00

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