In article <3952db8e@news.povray.org>, "Bob Hughes" 
<per### [at] aolcom?subject=PoV-News:> wrote:

> But I still don't understand anything about eval_pigment yet.

It is quite simple:
A pigment simply defines a color for each point in space, using a color, 
image, or pattern + color_map. The eval_pigment returns the rgb color of 
the pigment at a specified point of space.
Since a color is basically a vector, you can use this to pattern 
interesting displacements like wind-blown grass, rock placement in a 
stream, smoke particles, etc...you can get much more variation and 
control than you would get with just turbulence.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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