In article <39c230d5@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   With the colors at least. I don't remember if there's any other place 
> where the 4th and 5th components have a meaning.

The julia fractal and in macros. Maybe some other places. MegaPOV uses 
the vector syntax to pass parameters to built-in functions, but that 
syntax won't make it into 3.5.


>   For example, if you set the color of a light source larger than 1, it 
> will be brighter. It may also have some effect on things like fog, media, etc.

And if you make a light source with a negative color, it will make an 
"anti-light" source which darkens anything visible from the light source.
Fog isn't affected by light sources, but media would be.

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

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