In article <386c87de@news.povray.org>, Nieminen Juha 
<war### [at] punarastascstutfi> wrote:

> Chris Huff <chr### [at] yahoocom> wrote:
> : Another advantage could be the increased precision, aren't color_maps 
> : limited to 255 levels of color?
> 
>   Says who?

I don't know. Which is why I didn't state it as a fact. :-)
I know they are limited to 255 entries, but I don't know how much 
precision a float value derived from a color_map would have. I haven't 
taken a close look at that part of the code. But the patterns can return 
double precision values, and they don't have to interpret a color_map to 
do so. This makes slightly less flexibility, you can't alter the 
waveform with a color_map, but could be a lot faster.

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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