Renderdog wrote:
> 
> Ken wrote:
> >
> >Christopher James Huff wrote:
> >>
> >> If it is coincident with or intersects the surface, sometimes it will
> >> get hit first and the transmitted ray will miss the other surface, so
> >> you see the interior of the second object through the transparent one.
> >> Since the interior is in shadow, it is dark.
> >>
> >> The only way to avoid this in the intersecting surface case would be to
> >> change the way POV handles non-refracting transparency.
> >
> >Or he may need to increase the max_trace_level in the global settings block
> >a bit.
> 
> My first suspect was max_trace_level, but increasing it didn't help. Looks
> like I'll have to keep my objects away from the wall or not use transparency
> and mask off the non-leaf parts.
> 
> Since the wall is an isosurface, perhaps increasing the accuracy would help,
> or (if it's an option) maybe making the wall shadowless.
> 
> Thanks Christopher and Ken for your help.

How do you create an alpha channel?  Can POV do it?  Or do you need to
use a picture editor?

Thanks.

-- 
Tom A.
"Archie!  You are headstrong.  I am imperious.  It's a miracle 
we get along as well as we do." - Nero Wolf
Deja mail is gone.  Look for me at raugost at yahoo . com

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