//Plucker's Conoid, a Type 8 Steiner surface
//by Adam Coffman

camera {
    location  <1.7,0,2.5>
    look_at   <0,-1,0>
      }
 #include "colors.inc"
 #include "woods.inc"
 background{White}
 poly { 3 <
    0,0,-1,1,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0>
    sturm 
    texture { 
    T_Wood11
    rotate y*90
         }
    finish{ambient 0.1 reflection 0.2
           phong 0.1
           phong_size 30
 }
    rotate x*90     scale <1,1.7,1>
    bounded_by { cylinder{<0,-5,0>,<0,5,0>,1.5} }
    clipped_by { bounded_by }   
    }
  light_source{<40,30,0> White} 
  light_source{<30,-10,0> White}