#include "colors.inc"


camera {
   location <5.0, 2, 1>
   up <0.0, 1.0, 0.0>
   right <4/3, 0.0, 0.0> 
   look_at <0, 0, 0.0>
}


light_source { <-5, 15, 5> color White }

bicubic_patch { 
  type 1 flatness 0.1  u_steps 8  v_steps 8
  < 0.0, 0.0, 2.0>, < 1.0, 0.0, 0.0>, < 2.0, 0.0, 0.0>, < 3.0, 0.0, -2.0>,
  < 0.0, 1.0, 0.0>, < 1.0, 1.0, 0.0>, < 2.0, 1.0, 0.0>, < 3.0, 1.0,  0.0>,
  < 0.0, 2.0, 0.0>, < 1.0, 2.0, 0.0>, < 2.0, 2.0, 0.0>, < 3.0, 2.0,  0.0>,
  < 0.0, 3.0, 2.0>, < 1.0, 3.0, 0.0>, < 2.0, 3.0, 0.0>, < 3.0, 3.0, -2.0>

  pigment { rgbf<1,1,1,0.5> }
  translate <-1.5,-1.5,0>
  rotate y*45
  rotate z*90
  rotate y*45
}

union {
cylinder {< 0.0, 0.0, 2.0>, < 1.0, 0.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 0.0, 0.0>, < 2.0, 0.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 0.0, 0.0>, < 3.0, 0.0, -2.0>, 0.05 pigment { Red }}

cylinder {< 0.0, 1.0, 0.0>, < 1.0, 1.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 1.0, 0.0>, < 2.0, 1.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 1.0, 0.0>, < 3.0, 1.0,  0.0>, 0.05 pigment { Red }}

cylinder {< 0.0, 2.0, 0.0>, < 1.0, 2.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 2.0, 0.0>, < 2.0, 2.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 2.0, 0.0>, < 3.0, 2.0,  0.0>, 0.05 pigment { Red }}

cylinder {< 0.0, 3.0, 2.0>, < 1.0, 3.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 3.0, 0.0>, < 2.0, 3.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 3.0, 0.0>, < 3.0, 3.0, -2.0>, 0.05 pigment { Red }}



cylinder {< 0.0, 0.0, 2.0>, < 0.0, 1.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 0.0, 1.0, 0.0>, < 0.0, 2.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 0.0, 2.0, 0.0>, < 0.0, 3.0, 2.0>, 0.05 pigment { Red }}

cylinder {< 1.0, 0.0, 0.0>, < 1.0, 1.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 1.0, 0.0>, < 1.0, 2.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 1.0, 2.0, 0.0>, < 1.0, 3.0, 0.0>, 0.05 pigment { Red }}

cylinder {< 2.0, 0.0, 0.0>, < 2.0, 1.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 1.0, 0.0>, < 2.0, 2.0, 0.0>, 0.05 pigment { Red }}
cylinder {< 2.0, 2.0, 0.0>, < 2.0, 3.0, 0.0>, 0.05 pigment { Red }}

cylinder {< 3.0, 0.0, -2.0>, < 3.0, 1.0,  0.0>, 0.05 pigment { Red }}
cylinder {< 3.0, 1.0,  0.0>, < 3.0, 2.0,  0.0>, 0.05 pigment { Red }}
cylinder {< 3.0, 2.0,  0.0>, < 3.0, 3.0, -2.0>, 0.05 pigment { Red }}
translate <-1.5,-1.5,0>
rotate y*45
rotate z*90
rotate y*45
}