Lutz-Peter Hooge schrieb in Nachricht ...
>I'm not very happy with the bottom of the big stone on the top of the
>columns: it looks not rough enough.


Just an idea: are you sure, that your contained_by-object does not cut of
the roughness at the bottom?
If that's not the case, you could add the pigment directly to the
y-component (like in +((y+platenorm(x,y,z)*0.1)*rb)^b) of the formula, too.
That might work as well.

Marc-Hendrik

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