POV-Ray : Newsgroups : povray.advanced-users : light_group inconsistency? : Re: light_group inconsistency? Server Time
3 Jul 2024 04:49:23 EDT (-0400)
  Re: light_group inconsistency?  
From: Reactor
Date: 22 Mar 2009 16:40:01
Message: <web.49c6a15b55c0a5ffab66910f0@news.povray.org>
Darren New <dne### [at] sanrrcom> wrote:
> Reactor wrote:
> > but they always cast a shadow from global light_sources.
>
> I don't know if this has any relevance, but there's actually three objects
> to be considered: The light, the object casting the shadow, and the object
> the shadow is cast upon.
>
> In other words, if the statue casts a shadow on the floor, perhaps it's
> because the *floor* is illuminated by global lights, even if the statue isn't.
>
> --
>    Darren New, San Diego CA, USA (PST)
>    My fortune cookie said, "You will soon be
>    unable to read this, even at arm's length."

That is an interesting perspective that I hadn't considered, but I think my
expectation was that the illumination and shadows would be together.  That is,
if a light doesn't illuminate an object, then it probably shouldn't be shadowed
by it, either.

-Reactor


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.