// Primeiro exercicio de MC930
// Eduardo Hideki Tanaka (970563)
// data: 28/09/2000

background{ color rgb < 0.00, 0.08, 0.02 > }

light_source {
  < 5.00, -10.00, 7.00 >
  color rgb < 1.00, 1.00, 1.00 >
} 

camera {
  location  <  3.00, -5.00, 10.00 >
  right     < -1.20, 0.00, 0.00 >
  up        <  0.00, 0.00, 0.90 >
  sky       <  0.00, 0.00, 1.00 >
  look_at   <  5.00, 5.00, 6.00 >
} 

#declare tinta_cinza = 
  texture {
    pigment { color rgb < 1.00, 0.80, 1.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare tinta_cinza_escuro = 
  texture {
    pigment { color rgb < 0.80, 0.80, 1.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare tinta_vermelha = 
  texture {
    pigment { color rgb < 1.00, 0.10, 0.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare tinta_azul = 
  texture {
    pigment { color rgb < 0.00, 0.10, 1.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare tinta_laranja = 
  texture {
    pigment { color rgb < 1.00, 0.50, 0.10 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare esfera =
  sphere {
    < 6.50, 2.50, 5.50 >, 1.50 
    texture { tinta_vermelha }
  }

#declare cilindro_grande = 
  cylinder {
    < 1.00, 5.00, 4.00 >,
    < 1.00, 5.00, 9.00 >,
    1.00
    texture { tinta_laranja }
  }  

#declare cilindro_pequeno = 
  cylinder {
    < 4.00, 5.00, 4.00 >,
    < 4.00, 5.00, 7.00 >,
    1.00
    texture { tinta_laranja }
  }  

#declare cubo = 
  box {
    < 8.00, 7.00, 4.00 >,
    < 10.70, 9.70, 6.70 >
    texture { tinta_azul }
  }  

#declare cilindro_furado = 
  cylinder {
    < 3.00, 2.50, 4.00 >,
    < 3.00, 2.50, 5.80 >,
    1.00
    texture { tinta_cinza }
  }

#declare furo = 
  cylinder {
    < 3.00, 2.50, 4.90 >,
    < 3.00, 2.50, 6.00 >,
    0.80
    texture { tinta_cinza_escuro }
  }  

// A cena é formada aqui...
union {
    object { esfera }
    object { cilindro_grande }
    object { cilindro_pequeno }
    object { cubo }
    difference {
       object { cilindro_furado }
       object { furo }
    }
}