$illumposition: Difference between revisions
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Note:$illumposition can be overridden per-entity on most entities (including prop_static) by using the lightingorigin KV.
Important:The default illumposition is not the origin of the model, but rather the center of the model, based upon the first sequence.
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When illuminating an animated or moving model in the engine, the lighting calculations are only done for the two brightest light sources. All the other lights, as well as bounced light from the environment, | {{this is a|QC command|name=$illumposition}} It sets the lighting origin for the model, relative to its origin. | ||
When illuminating an [[CBaseAnimating|animated or moving model]] in the engine, the lighting calculations are only done for the two brightest light sources, via the [[BSP (Source)#Worldlights|worldlights lump]]. All the other lights, as well as bounced light from the environment, are taken from a single [[ambient cube]]. | |||
You can optionally specify a bone name for the illum position. If you do, the position specified will be interpreted as being relative to the specified bone. | You can optionally specify a bone name for the illum position. If you do, the position specified will be interpreted as being relative to the specified bone. | ||
{{note|$illumposition can be overridden per-entity on most entities (including [[prop_static]]) by using the {{code|lightingorigin}} [[KV]].}} | |||
{{important|The default illumposition is ''not'' the origin of the model, but rather the center of the model, based upon the first [[$sequence|sequence]].}} | |||
== Syntax == | == Syntax == | ||
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Latest revision as of 21:13, 18 July 2025
$illumposition is a QC command available in all 
Source games. It sets the lighting origin for the model, relative to its origin.
When illuminating an animated or moving model in the engine, the lighting calculations are only done for the two brightest light sources, via the worldlights lump. All the other lights, as well as bounced light from the environment, are taken from a single ambient cube.
You can optionally specify a bone name for the illum position. If you do, the position specified will be interpreted as being relative to the specified bone.
Note:$illumposition can be overridden per-entity on most entities (including prop_static) by using the lightingorigin KV.Important:The default illumposition is not the origin of the model, but rather the center of the model, based upon the first sequence.Syntax
$illumposition (x) (y) (z) [optional bone name]
Examples
$illumposition 0.000 0.048 -0.115
$illumposition 0.000 9.21 4.00 ValveBiped.Bip01_Pelvis
See also