> Sweet!  Whenever I try to do something like that (pat a
> function into a rough sphere), I get discontinuities: the
> edge of the sphere.

#declare Cracko = function {
  pigment { crackle turbulence 0.1
            color_map { [0 color rgb 1]
                        [1 color rgb 0] } } }
isosurface { function { Cracko(x*2,y*2,z*2).gray-(1-(x*x+y*y+z*z)/3) }
             max_gradient 5
             contained_by { box { -3, 3 } }
             pigment { color White }
             finish { ambient 0 } }

> And they render too slow.  ;)
Oh yes. Especially with radiosity. These each took about an hour and a half
to render on a 1.2GHz iBook. Although perhaps I shouldn't have been playing
music on it at the same time(!).

B

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