// Quarto exercicio de MP004
// Last edited on 2001-06-02 16:09:00 by Marcus Macedo 

background{ color rgb < 0.9, 0.9, 0.9 > }

light_source {
  < 0.00, 6.00, 6.00 >
  color rgb < 1.00, 1.00, 1.00 >
} 

camera {
  location  < 5.00, 5.00, 4.20 >
  right     < -0.60, 0.00, 0.00 >
  up        <  0.00, 0.00, 0.80 >
  sky       <  0.00, 0.00, 1.00 >
  look_at   <  0.00, 0.00, 2.00 >
} 

#declare vermelho = rgb < 1.00, 0.00, 0.00 >
 
#declare branco = < 0.90, 0.90, 0.90 >
 
#declare amarelo = < 1.00, 0.75, 0.00 >

#declare tx_ouro =
  texture {
    pigment { rgb amarelo }
    finish { 
      ambient 0.05 diffuse 0.05
      reflection amarelo
      specular 0.20 roughness 0.05
    }
  }
 
#declare tx_prata =
  texture {
    pigment { rgb branco }
    finish { 
      ambient 0.05 diffuse 0.05
      reflection 0.85*branco
      specular 0.20 roughness 0.05
    }
  }

#declare tx_rubi =
  texture {
    finish {
      ambient 0.1 diffuse 0.1
      reflection 0.2
      specular 1 roughness 0.001
    }
    pigment { color vermelho filter 0.8 }
  }

#declare cone_de_vidro_vermelho =
  cone {
    < 0.0, 0.0, 1.0>, 1.0
    < 0.0, 0.0, 3.0>, 0.3
    texture{ tx_rubi }
  }

#declare bola_de_ouro = 
  sphere {
    < 0.0, 0.0, 3.5 >, 0.5 
    texture { tx_ouro }
  }

#declare toro_da_base_1 =
  torus { 1.0, 0.25 sturm texture{ tx_prata } rotate 90*x translate < 0, 0, 0.75 > }

#declare toro_da_base_2 =
  torus { 1.0, 0.25 sturm texture{ tx_prata } rotate 90*x translate < 0, 0, 0.25 > }

#declare chao_xadrez =
  plane { z, 0 pigment { checker < 0, 0, 0 >, < 1, 1, 1 > } }

// Aqui está a cena, finalmente:

object { chao_xadrez }
object { toro_da_base_2 }
object { toro_da_base_1 } 
object { cone_de_vidro_vermelho hollow interior{ior 1.5} } 
object { bola_de_ouro }