POV-Ray : Newsgroups : povray.beta-test : Advanced diffuse_back Beta34 example scene : Re: Advanced diffuse_back Beta34 example scene Server Time
7 Jul 2024 07:26:46 EDT (-0400)
  Re: Advanced diffuse_back Beta34 example scene  
From: Mr
Date: 25 Aug 2009 04:20:00
Message: <web.4a939daea86904972205c79a0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Mr schrieb:
> >> [1] As for backside vs. frontside diffuse term, it should be noted that
> >> light making it though to the other side of the object is unavailable
> >> for diffuse reflection on this side.
> >
> > Does that mean that all the rest should add up to one and the back diffuse can
> > still go anywhere between 0 and 1 again? (sorry to ask again)
>
> No, sorry, that's a misunderstanding; what I meant to point out was that
> to get realistic results, when you increase back-side diffuse value (=
> more light gets through to the other side), you should decrease the
> front-side diffuse value accordingly (= less light stays on /this/ side).
>
> Thus, you should make sure that:
>
>    diffuse(front) + diffuse(back) + specular + phong  <=  1.0

Thanks. This way seemed more logical from the start but that's perfectly clear
now.


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