gonzo wrote:
> I have some transparent spheres filled with scattering & emission media
> which look fine by themselves, and I want them hovering over a scene with
> ground fog in the background which also looks fine by itself, but when I
> combine them the spheres aren't transparent anymore.
> 
> How can I put the spheres in the scene without the container showing?
> 
> Or how can I get a background fog that's only in the background and doesn't
> interact with the foreground?

In my comprehension of the fog, it will adjust the final color of a 
pixel to the fog color based on the distance of collision between 
objects.  I think the fog cannot collision with your media inside the 
spheres, but only with the spheres themselves, thus making something 
possibly strange about the spheres.

I think, but I'm not sure at all that the only way to solve your problem 
would be to have a real atmosphere in your scene, a scene media of some 
sort, I think it's possible, I think it will solve your problem, but I'm 
not sure how well this will work.

Hope this helps at least a little!
   Xilo

-- 
Dedicated to audio/visual and interactive artwork.
http://www.geocities.com/simonlemieux/

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