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In article <3d154105@news.povray.org> , "Slime" <slm### [at] slimeland com> wrote:
> I wish there were a better way to create random noise, but I sure as heck
> couldn't come up with one.
>
> The artifact is caused by the fact that while the first derivative of the
> function is continuous everywhere, the *second* derivative isn't necessarily
> continuous at any of the integral values of x,y, or z.
Your obervation might be correct also not worded very well, I have noticed a
similar "defect" and I actually think I know why it is there.
Thorsten
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Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde
Visit POV-Ray on the web: http://mac.povray.org
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