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"Steely" <Rob### [at] hamburg de> wrote in message
news:web.3f8ca0086f671e0faeb8ce9d0@news.povray.org...
> when replacing "bumps" with "gradient" or "marble" or other patterns, I
can
> see the effect I expected, but with bumps there is only an effect in the
> background, near the horizon, and in the foreground happens nothing.
>
> What am I making wrong?
Nothing... except for using phase in the bumps normal instead of the
color_map. It's just that phase doesn't work some patterns at all; and for a
few others, not in normals. So you can still animate the colors, just not
the surface normal. Unless you use a different pattern, of course.
The background might be appearing to change a little due to pixel jitter,
perhaps.
See the documentation index, look for phase. Section 6.7.12.2 Frequency and
Phase tells about it.
--
Bob H.
http://www.3digitaleyes.com
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