POV-Ray : Newsgroups : povray.advanced-users : How to create realistic caustics? : Re: How to create realistic caustics? Server Time
7 Jul 2022 01:27:37 EDT (-0400)
  Re: How to create realistic caustics?  
From: Mr
Date: 12 Mar 2022 12:25:00
Message: <web.622cd6c5a728bcef34c7846e6830a892@news.povray.org>
Alain Martel <kua### [at] videotronca> wrote:

> > On 12/03/2022 6:30 am, Juergen wrote:
> >> The problem here is that first the complete scene is covered with the
> >> texture.
> >
> > Light Group Might be the solution.
> >
> > Light groups make it possible to create a union of light sources and
> > objects, where the objects in the group are illuminated by the lights in
> > the group or, if so desired, by the global light sources as well.
> >
> > m@
>
> Another solution could be the use of projected_thru attribute for a light.

> anti-shadow. Here, you just need a thin, untextured, box set just at the
> water level.
>
> light_group don't work with photons.
> projected_thru DO work with photons.

neat trick !


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