[Radiance-general] Gendaylit Visible radiation

[Julien Boutillier]

Hi Lars, 

I have try with -ab 1 and the result is the same.

I search information about Perey algorithm which is used in gendaylit, and I understand my result now! 

Thanks for your help, 

Julien

Le 2 févr. 2013 à 07:12, Lars O. Grobe a écrit :

> Hi Julien!
> 
>> I don't forget to apply the skyfunc to a glow modifier. Here  is 2 files which describe my sky. Did I make something wrong? 
> 
> Seams to be ok in there.
> 
>> I use rtrace to calculate the irradiance in a point high in the sky (100meter). -ab parameter is equal to 0, I don't need interreflexion for this case (...)
> 
> Could you please try with -ab 1? Your glow is effective only in the indirect calculation. rtrace calculates irradiance on a virtual diffuse surface, so the glow is hit over at least one bounce.
> 
> I have to admit that I tend to forget the exact behavior of rtrace here and cannot test it. The -I may internally increase -ab, but I would not expect it.
> 
> Cheers, Lars.
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