news:401a93a3$1@news.povray.org...
> "Greg M. Johnson" wrote in message news:40187a33$1@news.povray.org...
> > Here's a modification of Daniel's code.  Why is there a distortion in x
> > but not z??
>
> If you use (x*blah, y*blah, z) instead of (x*blah, y, z*blah) you get what
you
> expect to see. The question is: Why? Is f_noise_generator right-handed?

The reason is that function n,n works as an image_map, which exists in the
x,y plane (and from top to bottom in the y direction IIRC). The z in this
case isn't taken into account.

G.


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