camera {
  angle 30
  location <10, 10, 11>
  look_at <0, 0, 1>
}

light_source {
  <0, 0, 10>
  <1.0, 1.0, 1.0>
  spotlight
  radius 10
  falloff 15
  point_at <0, 0, 1>
}

light_source {
  <10, 0, 1>
  <1.0, 1.0, 1.0>
  spotlight
  radius 10
  falloff 15
  point_at <0, 0, 1>
}

light_source {
  <0, 10, 1>
  <1.0, 1.0, 1.0>
  spotlight
  radius 10
  falloff 15
  point_at <0, 0, 1>
}

box {
  <-2, -2, -2>
  <100, 100, 100>
  hollow
  pigment {
    rgb <1.0, 1.0, 1.0>
  }
}

#declare init = union {
  prism {
    linear_spline
    linear_sweep
    -0.001
    2.001
    9
    <0.000, 0.000>, <0.250, 0.000>, <0.375, 0.250>, <0.750, 0.250>, <0.750, 0.000>, <1.000, 0.000>, <1.000, 1.000>, <0.500, 1.000>, <0.000, 0.000>
    translate <-0.5, -1.0, -0.5>
  }

  prism {
    linear_spline
    linear_sweep
    -0.001
    2.001
    9
    <0.000, 0.000>, <0.600, 0.000>, <1.000, 1.000>, <0.750, 1.000>, <0.450, 0.250>, <0.250, 0.250>, <0.250, 1.000>, <0.000, 1.000>, <0.000, 0.000>
    translate <-0.5, -1.0, -0.5>
    rotate <-90, 0, 180>
  }

  prism {
    linear_spline
    linear_sweep
    -0.001
    2.001
    12
    <0.000, 0.000>, <0.250, 0.000>, <0.250, 0.333>, <0.667, 0.000>, <1.000, 0.000>, <0.375, 0.500>, <1.000, 1.000>, <0.667, 1.000>, <0.250, 0.667>, <0.250, 1.000>, <0.000, 1.000>, <0.000, 0.000>
    translate <-0.5, -1.0, -0.5>
    rotate <0, 0, -90>
  }

  rotate <-90, -90, 0>
}

#declare pegs = union {
  cylinder {
    <-0.75, -0.75, -0.5>
    <-0.75, -0.75, 0.5>
    0.125
  }

  cylinder {
    <-0.75, 0.75, -0.5>
    <-0.75, 0.75, 0.5>
    0.125
  }

  cylinder {
    <0.75, -0.75, -0.5>
    <0.75, -0.75, 0.5>
    0.125
  }

  cylinder {
    <0.75, 0.75, -0.5>
    <0.75, 0.75, 0.5>
    0.125
  }
}

merge {
  difference {
    box {
      <-1.0, -1.0, -1.0>
      <1.0, 1.0, 0.0>
    }

    object {
      init
    }
  }

  object {
    pegs
  }

  pigment {
    rgbf <1.0, 0.8, 0.6, 1.0>
  }
  finish {
    reflection 1.0
  }
}

difference {
  difference {
    box {
      <-1.0, -1.0, 0.0>
      <1.0, 1.0, 1.0>
    }

    object {
      init
    }
  }

  object {
    pegs
  }

  translate <0.0, 0.0, 2.0>
  pigment {
    rgbf <1.0, 0.8, 0.6, 1.0>
  }
  finish {
    reflection 1.0
  }
}