#include "colors.inc"
#include "stones.inc"

camera{location <5,15,-20>
       look_at<0,0,0>
      }
       
      
light_source{<1000,1000,-1000> White}


sky_sphere
{
  pigment
  {
    gradient y
    color_map { [0.0 color rgb <0.7,0.7,1.0>] [1.0 color blue 0.5] }
  }
}
       



#declare base = torus{5,2scale <1,1.1,1>}


#declare halft = 
difference{
torus{2,.5 rotate 90*x scale 1.3*x}
box{<-5,-5,-5><0,5,5>}
}





#declare tire=
difference{
object{base pigment{Gray50}}

#declare i=1;
#while(i<25)
object{halft pigment{Gray60} rotate 25*x translate<5.1,0,0> rotate 15*i*y}
#declare i=i+1;
#end
}


object{tire rotate <90 90,0> translate <-6,0,3>}
object{tire rotate <90 90,0> translate <6,0,3>}
object{tire rotate <90 90,0> translate <-6,0,25>}
object{tire rotate <90 90,0> translate <6,0,25>}