In article <39bf474c$1@news.povray.org>, "Bob Hughes" 
<per### [at] aolcom?subject=PoV-News:> wrote:

> Main thing I can think of is one word: absorption.  Without any these 
> glows tend to only accumulate the color intensity, so this animation 
> looks like some sort of hot plasma.  Other effects would always be 
> limited by that fact.  Well, I'm just making it seem a bad thing to 
> not be media-like really.  These glows aren't media obviously.  I 
> forgot, all that's needed is to place dark (negative?) glows in 
> somehow to mesh with the overlapping bright ones.  Sorry, I get 
> carried away when I have a thought.

I'm planning to add new rendeing modes like this very soon, but I have 
been a bit distracted with the blob/particle_system bug in the little 
time I have had left after school and work.
I might even be able to precompute the illumination of each scattering 
glow by tracing from it's center...not wonderfully accurate, but an 
interesting idea.
If you want a negative/subtractive glow, just use negative values in the 
color.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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