POV-Ray : Newsgroups : povray.unofficial.patches : 'normal' is not taken into account in radiosity : Re: 'normal' is not taken into account in radiosity Server Time
2 Sep 2024 22:17:43 EDT (-0400)
  Re: 'normal' is not taken into account in radiosity  
From: Hans-Detlev Fink
Date: 16 Nov 1999 09:37:02
Message: <38316646.7BA14820@pecos.no.spam.de>
Hi!

Sorry to intervene here, I'm one of the slope patch authors, you know
;-)

Ben Birdsey wrote:
> 
>         You're right, it doesn't take the normal into account.
> 
>         Right now, radiosity is just a way of calculating the AMBIENT light at
> different points.  This is the same reason the slope mapped texture
> doesn't show with ambient light either.  ( turn the radiosity off and
> crank up the "ambient_light" in "global_settings" and check it out).

  Using the latest slope patch based on 3.1g I cannot reproduce what you
describe. A slope dependant texture on a bump mapped sphere shows
quite well, even with pure ambient light (radiosity off). Of course,
the bumps are invisible then, but the texture is. (And it follows the
perturbed normals, not only the pure geometric normal.)

  But maybe it's different with the superpatch.

-Hans-


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