[Radiance-general] mkillum to produce zero radiance (sealing geometry)

[Jack de Valpine]

Hi Lars,

You should have a separate material as follows:

void illum seal.illum
0
0
3 0 0 0

Apply this to seal illum geometry. The only illums you should need to 
send to mkillum are that actual ones to be used for secondary sources.

-Jack

Lars O. Grobe wrote:

> Hi List!
>
> I have a scene containing to modifiers that should be converted to 
> illums by mkillum. The first, called illum, should be the actual light 
> source for indirect calculation. That is well documented with mkillum. 
> The second is to "seal" geometry only. That means, the modified 
> surfaces are so small, that I can neglect them to reduce the number of 
> light sources in the indirect calculation. RwR chapter 13.1 suggests 
> to seal such geometry with zero-radiance illums, but doesn't propose 
> how to set them. So that is the point where I am, can I somehow give 
> this zero-radiance as an option to mkillum?
>
> Thank You, CU Lars.
>
>
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