global_settings {
   assumed_gamma 1

   max_trace_level 50
   radiosity {}
}

camera{
  location <5, 9, 11>
  up       <0, 1, 0>
  right    <1, 0, 0>
  look_at  <0, -1, 0>
}

sphere {
  0, 10000

  hollow
  no_shadow

  pigment { rgb 1 }
  finish { diffuse 0 ambient 1 }
}

#local fchecker = function { pigment { checker } }

union{
  cylinder{ <-5,  3, -3>, <5,  3, -3>, 1/8 }
  cylinder{ <-5,   0, -3>, <5,   0, -3>, 1/8 }
  cylinder{ <-5, -3, -3>, <5, -3, -3>, 1/8 }

  cylinder{ <-5,  3, 0>, <5,  3, 0>, 1/8 }
  cylinder{ <-5,   0, 0>, <5,   0, 0>, 1/8 }
  cylinder{ <-5, -3, 0>, <5, -3, 0>, 1/8 }

  cylinder{ <-5,  3, 3>, <5,  3, 3>, 1/8 }
  cylinder{ <-5,   0, 3>, <5,   0, 3>, 1/8 }
  cylinder{ <-5, -3, 3>, <5, -3, 3>, 1/8 }

  cylinder{ < 3, -5, -3>, < 3, 5, -3>, 1/8 }
  cylinder{ <  0, -5, -3>, <  0, 5, -3>, 1/8 }
  cylinder{ <-3, -5, -3>, <-3, 5, -3>, 1/8 }

  cylinder{ < 3, -5, 0>, < 3, 5, 0>, 1/8 }
  cylinder{ <  0, -5, 0>, <  0, 5, 0>, 1/8 }
  cylinder{ <-3, -5, 0>, <-3, 5, 0>, 1/8 }

  cylinder{ < 3, -5, 3>, < 3, 5, 3>, 1/8 }
  cylinder{ <  0, -5, 3>, <  0, 5, 3>, 1/8 }
  cylinder{ <-3, -5, 3>, <-3, 5, 3>, 1/8 }

  cylinder{ <-3,  3, -5>, <-3,  3, 5>, 1/8 }
  cylinder{ <-3,   0, -5>, <-3,   0, 5>, 1/8 }
  cylinder{ <-3, -3, -5>, <-3, -3, 5>, 1/8 }

  cylinder{ <0,  3, -5>, <0,  3, 5>, 1/8 }
  cylinder{ <0,   0, -5>, <0,   0, 5>, 1/8 }
  cylinder{ <0, -3, -5>, <0, -3, 5>, 1/8 }

  cylinder{ <3,  3, -5>, <3,  3, 5>, 1/8 }
  cylinder{ <3,   0, -5>, <3,   0, 5>, 1/8 }
  cylinder{ <3, -3, -5>, <3, -3, 5>, 1/8 }

  quadric{ <1, 0, 1>, 0, 0, -1/4 }

  texture{ function { fchecker(x, y, z).gray }
   texture_map{
    [0 pigment {rgb 0 } finish { reflection {0, 1/2 metallic 1/2} 
ambient 0 diffuse 1 }]
    [1 pigment {rgb 0.8 } finish { reflection {0, 1 metallic 1/2} 
ambient 0 diffuse 1 }]
   }
  }
}

Rendering settings: 1000x1000, no AA.

The rendering freezes for several hours on 27%.

POV-Ray v3.6.1.icl8.win32

William

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