[Radiance-general] mixfunc for dichroic film?

[Greg Ward]

Hi Guilio,

That is correct -- Radiance only finds virtual source objects using 
mirror or prism material types directly.  It doesn't even look if you 
have a modifier in front of the material in the chain (e.g., you 
reference a pattern before the material).

I recently made a change that allows Radiance to find ordinary sources 
when the source material is further down the modifier chain or 
alias'ed, but I didn't do this for virtual source materials, whose 
surfaces must still be modified directly.  Actually, I should make the 
change so aliases and intervening modifiers work properly with virtual 
source material types -- there's no reason not to.   This still won't 
work for mixtures, in any case.

Mixtures don't make a lot of sense for sources or virtual source 
materials the way Radiance is designed, in my opinion.

-Greg

> From: Giulio Antonutto <Giulio.Antonutto at arup.com>
> Date: March 1, 2004 9:21:32 AM PST
>
> I tried simulating caustics in Radiance classic (3.6a) by using mixfunc
> (mirror + plastic with pattern)
> I realized that Radiance does not look for virtual sources into mixed
> definitions:
> could you confirm that?
>
> cheers,
>
> giulio
>
>
> PS sorry for the slightly different topic, it is just another 
> mix-question
> to add...
>