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"Russell Towle" <rto### [at] inreach com> wrote:
> Unusual to see triangular bipyramids.
DualTetrahedron
//stacks
#declare Vmin=0;
#declare Vmax=pi;
//slices
#declare Umin=0;
#declare Umax=pi*2;
#declare Fx = function(u,v) { sin(u) * sin(v) }
#declare Fy = function(u,v) { cos(v) }
#declare Fz = function(u,v) { cos(u) * sin(v) }
spheroid(.8, 0.0, -0.5, 0.0,2,3,Fx,Fy,Fz,0)
spheroid_dome.inc required at this point which does several things over
Parametric().
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