#include "colors.inc"
  camera {
    location <10, 1, -5>
    look_at 0
    angle 36
  }
  light_source { <1000, -100, -500> White }
  // Green spotlight
light_source {
   <0, 0, 0> color Green
   cylinder
   point_at <-0.5, -0.5, 0>
   tightness 1
   radius .2
   falloff 1
}
light_source {
   <0, 0, 0> color Green
   cylinder
   point_at <-0.5, 0.5, 0>
   tightness 1
   radius .2
   falloff 1
}
light_source {
   <0, 0, 0> color Green
   cylinder
   point_at <-0.5, 0, 0.5>
   tightness 1
   radius .2
   falloff 1
}
light_source {
   <0, 0, 0> color Green
   cylinder
   point_at <-0.5, 0, -0.5>
   tightness 1
   radius .2
   falloff 1
}
//  plane { y, -1.5
//    pigment { checker Green White }
//  }
  difference {
  difference {
      sphere { <0, 0, 0>, 1.1
        pigment { White }
      }
      sphere { <0, 0, 0>, 1
        pigment { White }
      }
   
   }
   box { <0,-2,-2> <2,2,2> }
   }