Folks,
I wanted to create some irregular spheres ... I created two of these using:

isosurface {
   function { f_sphere(x, y, z, 1)-f_noise3d(x, y, z) }
   contained_by { box { <-2,-2,-2>, <2,2,2> } }
}

this was performed twice.  My problem is that BOTH shapes were identical.  I
had imagined that multiple calls to f_noise3d() would have resulted in
different shapes.

Is this correct?  Any way I can preturb the output of f_noise3d()?

Neil

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