# a pyramid of spheres in front of a checkered plane, and over a
# reflective ground plane.
scene (400  x 400 x 255 ) {
  viewpoint:	(150 0 3000)
  lightsource {
    at:		(300 -1000 2500)
    intensity:	1.0
  }
  environment {
    rgb:        (0.0 0.0 0.0)
    shadow:     0.4
  }
  plane {
    at: (0 0 1 0)
    ka: 1.0
    kd: 1.0
    checkerboard: (32 (0.0 0.0 0.0) (0.5 0.5 0.5))
   }
  plane {
    at: (0 1 0 -300)
    kd: 0.0
    ka: 0.5
    ks: 0.5
    rgb: (0.0 0.0 0.0)
   }
  # bottom row left
  sphere {
    at: (50 250 10)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.25 0.0 0.0)
    n: 5.0
  }
  sphere {
    at: (50 250 110)
    radius: 50
    ka: 0.5
    kd: 0.0
    it: 1.1
    ks: 0.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  sphere {
    at: (50 250 210)
    radius: 50
    ka: 0.5
    kd: 0.0
    it: 1.1
    ks: 0.1
    kt: 0.9
    rgb: (0.25 0.0 0.0)
    n: 5.0
  }
  # bottom row middle
  sphere {
    at: (150 250 10)
    radius: 50
    ka: 0.5
    kd: 0.0
    it: 1.1
    ks: 0.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  sphere {
    at: (150 250 110)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.25 0.0 0.0)
    n: 5.0
  }
  sphere {
    at: (150 250 210)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  # bottom row right
  sphere {
    at: (250 250 10)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.25 0.0 0.0)
    n: 5.0
  }
  sphere {
    at: (250 250 110)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  sphere {
    at: (250 250 210)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.25 0.0 0.0)
    n: 5.0
  }
  # middle row left
  sphere {
    at: (100 179 60)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.0 0.25)
    n: 5.0
  }
  sphere {
    at: (100 179 160)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  # middle row right
  sphere {
    at: (200 179 60)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.25 0.0)
    n: 5.0
  }
  sphere {
    at: (200 179 160)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.0 0.0 0.25)
    n: 5.0
  }
  # top
  sphere {
    at: (150 108 110)
    radius: 50
    ka: 0.5
    kd: 0.0
    ks: 0.1
    it: 1.1
    kt: 0.9
    rgb: (0.25 0.25 0.25)
    n: 5.0
  }
  quadric {
    a: 1.0
    d: -350.0
    h: 1.0
    i: -100.0
    j: 130000.0
    ka: 0.3
    kd: 0.5
    ks: 0.1
    marble: (32.0 3.0)
  }
}