// Last edited on 2011-05-13 13:02:30 by stolfi

background{ color rgb < 0.75, 0.85, 0.80 > }

#local tx_xadrez = 
  texture{
    pigment{ 
      checker 
        color rgb < 0.100, 1.000, 0.800 >, 
        color rgb < 1.000, 0.800, 0.400 >
    }
    finish{ ambient 0.1 diffuse 0.9 }
  }

#local tx_xadrez_cinza = 
  texture{
    pigment{ 
      checker 
        color rgb < 1.000, 1.000, 1.000 >, 
        color rgb < 0.800, 0.800, 0.800 >
    }
    finish{ ambient 0.1 diffuse 0.9 }
  }

#local tx_teste_A = 
  texture{
    pigment{ 
      granite
      color_map{
        [ 0.000 color rgb < 1.000, 0.900, 0.100 > transmit 1.000  ]
        [ 1.000 color rgb < 1.000, 0.100, 0.100 > transmit 0.000  ]
      }
      scale 3
    }
    finish{ ambient 0.1 diffuse 0.9 }
  }

#local tx_teste_B = 
  texture{
    pigment{ 
      checker
        color rgb < 1.000, 0.900, 0.100 > filter 1.000,
        color rgb < 1.000, 0.100, 0.100 > filter 0.000
      scale 3
    }
    finish{ ambient 0.1 diffuse 0.9 }
  }

#local tx_teste_C = 
  texture{
    pigment{ 
      checker
        color rgb < 1.000, 0.900, 0.100 > transmit 1.000,
        color rgb < 1.000, 0.100, 0.100 > transmit 0.000
      scale 3
    }
    finish{ ambient 0.1 diffuse 0.9 }
  }

#local tx_teste_D = // Vidro colorido.
  texture{
    pigment{ 
      color rgb < 1.000, 0.900, 0.100 > filter 0.600
    }
    finish{ ambient 0.0 diffuse 0.0 reflection 0.4 }
    normal{ granite 0.05 scale 5 }
  }
  
#local tx_luz = 
  texture{
    pigment{ color rgb < 1.000, 0.950, 0.930 > }
    finish{ ambient 1.0 }
  }

#local tx_teste_Z = 
  texture{
    pigment{ color rgb < 0.100, 0.900, 1.000 > }
    finish{ ambient 0.1 diffuse 0.9 }
    normal{ granite 0.2 scale < 1, 1, 20 > }
  }
  
plane{ z, 0 texture{ tx_xadrez_cinza } translate -10*z }

sphere{ <0,0,0>, 3.5 texture{ tx_teste_Z }  interior{ ior 1.5 } }

box{ < +4, 2, 2 >, < +6, 6, 6 > texture{ tx_luz } }

// plane{ y, 0 texture{ tx_xadrez_cinza } translate -10*y }
// sphere{ <-4,0,0>, 2.0 texture{ tx_xadrez } }
// sphere{ <+4,0,0>, 3.5 texture{ tx_teste_B } }
// sphere{ <+4,0,0>, 2.0 texture{ tx_xadrez } }

#declare cam_ctr = < 0, 0, 0 >; 
#declare cam_rad = 9; 
#declare cam_dir = <1,15,8>;