In article <3caca91b@news.povray.org>,
 "Corey Woodworth" <cdw### [at] mpinetnet> wrote:

> Ok I made a pic with an all white background by making the actual background
> white. I also added an infinte plane that is white with an ambient of .4 as
> a floor. I did this because I wanted the objects I placed in the scene to
> have shadows on a floor but still have the floor indistinguishable from the
> sky. My first problem is that ambient .4 really lightens up the shadows but
> if I lower the ambient the horizon becomes visible. My other problem is I
> want to make this pic alpha transparent. When I do so the white background
> becomes transparent but the floor doesn't. Is there a way I can give the
> floor a no_image tag or something similar but still let shadows be cast on
> it.

That would be meaningless, of course...you can't have shadows on nothing.
There are several simple ways to solve this, the easiest would be: Just 
don't use an infinite plane. Use a box or something just large enough 
for the shadows, but not big enough for light fading to make a 
difference. Using a diffuse slightly larger than 1 would help make the 
edge invisible.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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