In article <4037d7b3@news.povray.org>, "Hughes, B." <omn### [at] charternet> 
wrote:

> sphere_sweep doesn't seem to accept all the points given it by #while loop,
> from what I've found.

  ??? and why not ?

#declare sphereRadius = ...;
#declare myPoint = <0, 0, 0>;
#declare index = 0;

#declare mySphereSweep = sphere_sweep {
  cubic_spline
  n,
  #while (index<n)
    #set myPoint = compute x,y,z for index's point;
    <myPoint.x, myPoint.y, myPoint.z>, sphereRadius
    #set index=index+1;
  #end
  }

then use :
  object { mySphereSweep texture { } }

a+

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