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Hi All!
I have a question to turbulence. As far as I know, should it be
(pseudo-)random. But if you look at a wood texture with turbulence
.15 you will see a "system". There are larger scaled areas oriented
perpendicular to the axises in a regular distance.
to see what I mean render:
plane {z,0
pigment { wood
color_map {[0.0 color red 1][1.0 color rgb 0]}
turbulence .15
}
finish {ambient 1}
}
camera{location z*40 look_at 0}
use (1-cos(pi*clock*2))*.1 instead of .15 in the turbulence statement
for a nice animation.
Now:
is it:
a) a 'feature' of turbulence caused by the fact that turbulence is
*pseudo* random
b) a bug and
b1)is already fixed in megapov/povray3.5
b2)is not fixed yet
b3)is not to fix
c)something else, that is: ________
I whould prefer b1) but I don't think so.
How can I da a workaround?
I just wanted to make a nice simple woodtexture, but those rings
telling me the growth per year show me an unreal 'turbuelence' in the
thickness.
Thanks in advance!
cukk
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