// http://xahlee.org/3d/index.html

#include "colors.inc"

// 3 orthogonal cylinders
merge {
 cylinder { <2,0,0>,<-2,0,0>, 1.1 open}
 cylinder { <0,0,2>,<0,0,-2>, 1.1 open}
 cylinder { <0,2,0>,<0,-2,0>, 1.1 open}
 pigment { Gray filter 0 } // filter is for transparency
}

camera {
  location <4,3,-2>*1.2
  look_at 0
}
light_source { <10, 10, 10> White }

plane { y, -2 // y means <0,1,0>
  pigment { checker Red White }
}