#version 3.5;

global_settings {
  assumed_gamma 1.0
  max_trace_level 50
  radiosity{
    pretrace_start    1/4
    pretrace_end      4/image_width
    count             1600
    nearest_count     10
    error_bound       0.15
    recursion_limit   2
    minimum_reuse     0.006
    low_error_factor  0.5
    brightness        1
    save_file "ookoos02.radiositydata"
  }
}

camera {
  location  <-1, 15, -15>
  angle 80
  look_at   <-2, 0, 0>
  right     image_width/image_height*x
  
}

background { color rgb 0 }


light_source {
  <0, 0, 0>
  color rgb 20
  translate <20, 2, 0>  
}

box {
  <-.1, -.1, -50> < .1, 5, 10>
  texture {
    pigment {color rgb <.4, .4, .6>}
    finish {diffuse .4 ambient 0}
  }
}

box {
  <-7, -.1, 15> <4, 15, 15.1>
  texture {
    pigment {color rgb 1}
    finish {diffuse 1 ambient 0}
  }
}

#declare M_Glass= material {
  texture {
    pigment {rgbt 1}
    finish {
      ambient 0.0
      diffuse 0.05
      specular 0.6
      roughness 0.005
      reflection {
        0.1, 0.4
        fresnel on
      }
      conserve_energy
    }
  }
  interior {
    ior 1.5
  }
}

sphere {
  <-4, 3, -1> 3

  material { M_Glass }
}

plane { y, 0 material {texture {pigment {color rgb <.6, .6, .4>} finish {diffuse .4 ambient 0}}} }