#include "colors.inc"
  camera {
    location <10, 2, -30>
    look_at <10,1,0>
    angle 40
  }

  light_source { <300, 300, -700> White }
  light_source { <0, 0, -7> Red }

  background { color Blue}


plane { y, -12
    texture {
      pigment {
        checker
        color Brown
        color Yellow
      }
    }
  }  

#declare TeePeeTex = texture {
    pigment {
      color rgb <1, 1, 1,>
    }
    finish {
      ambient .2
      diffuse .6
      reflection 0.5
    }
  }

bicubic_patch {
    type 1 flatness 0.0100 u_steps 3 v_steps 3,
    <0, 0, 0>,
    <0, 0, 1>,
    <0, 0, 2>,
    <0, 0, 3>,

    <3, 0, 0>,
    <3, 5, 1>,
    <3, 5, 2>,
    <3, 0, 3>,

    <6, 5, 0>,
    <6, 5, 1>,
    <6, 5, 2>,
    <6, 5, 3>,

    <9, 5, 0>,
    <9, 4, 1>,
    <9, 4, 2>,
    <9, 5, 3>
    texture {
      TeePeeTex
   }
}

bicubic_patch {
    type 1 flatness 0.0100 u_steps 3 v_steps 3,
    <9, 5, 0>,
    <9, 4, 1>,
    <9, 4, 2>,
    <9, 5, 3>,

    <11, 4, -1>,
    <11, 4, 1>,
    <11, 4, 2>,
    <11, 4, 4>,

    <13, 3, -2>,
    <13, 5, 1>,
    <13, 5, 2>,
    <13, 3, 5>,

    <16, 0, -3>,
    <16, 7, 1>,
    <16, 7, 2>,
    <16, 0, 6>


    texture {
      TeePeeTex
   }
}


sphere { <0,0,0>, 0.1 texture{pigment{Yellow}} }
sphere { <0,0,1>, 0.1 texture{pigment{Yellow}} }
sphere { <0,0,2>, 0.1 texture{pigment{Yellow}} }
sphere { <0,0,3>, 0.1 texture{pigment{Yellow}} }

sphere { <3,0,0>, 0.1 texture{pigment{Yellow}} }
sphere { <3,5,1>, 0.1 texture{pigment{Yellow}} }
sphere { <3,5,2>, 0.1 texture{pigment{Yellow}} }
sphere { <3,0,3>, 0.1 texture{pigment{Yellow}} }

sphere { <6,5,0>, 0.1 texture{pigment{Yellow}} }
sphere { <6,5,1>, 0.1 texture{pigment{Yellow}} }
sphere { <6,5,2>, 0.1 texture{pigment{Yellow}} }
sphere { <6,5,3>, 0.1 texture{pigment{Yellow}} }

sphere { <9,5,0>, 0.1 texture{pigment{Yellow}} }
sphere { <9,4,1>, 0.1 texture{pigment{Yellow}} }
sphere { <9,4,2>, 0.1 texture{pigment{Yellow}} }
sphere { <9,5,3>, 0.1 texture{pigment{Yellow}} }

sphere { <11,4,-1>, 0.1 texture{pigment{Yellow}} }
sphere { <11,4,1>, 0.1 texture{pigment{Yellow}} }
sphere { <11,4,2>, 0.1 texture{pigment{Yellow}} }
sphere { <11,4,4>, 0.1 texture{pigment{Yellow}} }

sphere { <13,3,-2>, 0.1 texture{pigment{Yellow}} }
sphere { <13,5,1>, 0.1 texture{pigment{Yellow}} }
sphere { <13,5,2>, 0.1 texture{pigment{Yellow}} }
sphere { <13,3,5>, 0.1 texture{pigment{Yellow}} }

sphere { <16,0,-3>, 0.1 texture{pigment{Yellow}} }
sphere { <16,7,1>, 0.1 texture{pigment{Yellow}} }
sphere { <16,7,2>, 0.1 texture{pigment{Yellow}} }
sphere { <16,0,6>, 0.1 texture{pigment{Yellow}} }