I'm currently trying to get a sphere sweep approximation of my 
signiature and for some reason the object produced is full of tiny holes.

I've looked at all the info about self-shadowing and tolerance but no 
matter how I set the tolerance, the sweep looks like it's 
disintegrating. Besides, this isn't self shadowing as far as I can tell, 
the missing parts aren't just dark, they're transparent.


//This is the code I'm working with
global_settings{assumed_gamma 1.2}
camera {orthographic location<0,0,-5> look_at<0,0,0>}

light_source{<0,0,-30> color rgb 2}

sphere_sweep {
  b_spline
  10
  <-1.5,1,0>,0.03
  <0,1,0>,0.03
  <1,1,0>,0.03
  <1.4,1.2,0>,0.03
  <1.2,1.4,0>,0.03
  <1,1.2,0>,0.03
  <1,-1,0>,0.03
  <1.03,-1.03,0>,0.03
  <1.06,0,0>,0.03
  <2,0,0>,0.03
  //tolerance 1.0e-6
  pigment{color rgb <1,0,0>}
  finish{phong 1}
  translate<-2,0,0>
}
//end code fragment

Any ideas?

-Pete

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