background { rgb .9 }
#default { pigment { rgb <1,.8,.6> } finish { specular .5 } }


#declare Objiii =  
difference {
box { -1,1 } 
cylinder { <-2,0,0>,<2,0,0>,0.8 } 
cylinder { <0,-2,0>,<0,2,0>,0.8 } 
cylinder { <0,0,-2>,<0,0,2>,0.8 } 
}
#if (clock < 4)
#switch(mod(clock,4))
#range(0,1)
screw 
#break
#range(2,3)
roll
#break
#end
 {
cristal
{ Objiii
  ,  60
}, 
#switch(mod(clock,4.0))
#case(0)
<0,0,0>,<0,0,90>
#break
#case(1)
1,<90,90,90>/sqrt(3)
#break
#case(2)
<0,0,0>,<90,0,0>
#break
#case(3)
1,<90,90,90>/sqrt(3)
#break
#end
 }
#end
#if (clock = 4)
object { Objiii }
#end
#if (clock = 5)
cristal { Objiii, 60 }
#end

camera { location <10.0,10,10> right x look_at <0,0,0> angle 13   }
light_source { <200,100,-150>, z }
light_source { <00,00,150>, 1 }
light_source { <200,100,100>, x }
light_source { 0, y }

sphere { <3,1,1>,0.1 pigment  {color rgb x }}
sphere { <1,3,1>,0.1 pigment {color rgb y }}
sphere { <1,1,3>,0.1 pigment {color rgb z }}