The following code should produce something looking like a "vulcano
crater"
using a lathe object.

However, the center portion around the symmetry point (center of the
vulcano)
does not render properly.

This looks a bit like the bug concerning a too large value of EPSILON
which is
reported in this newsgroup.

I did, however, find any reference to EPSILON in config.ini. How can I
change it and
does it really solve the problem ?

// lathe rendering does not render properly in the vicinity of <0,0,0>
// Win95 4.00.950B PII 300
// Povray 3.1e.msvc.win32 (PII optimized)
// File by Stefan Hahn ste### [at] t-onlinede

global_settings { assumed_gamma 2.2 }


#declare eye = <-0.3,0.5,-0.3>

   lathe {
      linear_spline 4
      <0.000,0>
      <0.01,0.004>
      <0.02,0.0>
      <0.000,0>
      interior {ior 1.2} pigment {colour rgb<1,1,1>} finish{ambient 0.2
diffuse 0.8}
   }

camera {
   angle 1
   location eye
   up <0, 0.5, 0> right <0.6666, 0, 0>
   look_at <0,0,0>
}



light_source { <10, 100, -100> colour rgb<1,1,1> }

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