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I posted an image in p.b.i. under the title of "Lines on isosurfaces."
I asked for help about a trivial problem and discovered a more serious
one. I am using essentially a step function in an isosurface. I find
that mega refuses to give me any diffuse reflection for this object.
I was using the cells function, I found a similar problem with my
homemade version using ceiling and noise3d.
#declare celly=function{pigment{cells}}
#declare fnoise=16;//40;
isosurface{
function{y/160-
celly((x+1000)/fnoise,y/fnoise,(z+1000)/fnoise)
}
accuracy 0.01
threshold 0.0 // .03
contained_by {sphere{0,600}
pigment{SeaGreen} normal{bumps}
finish{ambient 0.2}
}
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