// Last edited on 2003-12-14 20:26:48 by stolfi
// Exemplo de arquivo de descricao de cena para POV-ray
#include "colors.inc"

// ======================================================================

#declare ctr = < 2.00, 2.00, 2.00 >;
#declare camDir = (< 0.00,- 30.00, 7.00 >) - (< 2.00, 2.00, 2.00 >);

camera {
  location   ctr + 1.00*camDir
  right      -0.60*x
  up         0.60*z
  sky        z
  look_at    ctr
}
 

// ======================================================================
// FONTES DE LUZ

light_source {
  10 * < +50.0, +30.0, +50.0 >              // Posição da lâmpada.
  color rgb 1.2 * < 1.00, 1.00, 1.00 >   // Intensidade e corda luz.
} 

light_source {
  10 * <+50.0, -10.0, +10.0 >             // Posição da lâmpada.
  color rgb 0.8 * < 1.00, 1.00, 1.00 >   // Intensidade e corda luz.
} 

// ======================================================================
// DESCRIÇÃO DA CENA 

#declare cor1= <0,1,1>;
#declare cor3= <1,1,0>;
background{ color rgb < 0.75, 0.80, 0.85 > }
#declare tx_chao=texture { pigment {checker  Goldenrod
                                             LightSteelBlue}
                                finish{
                                   ambient 0.05 diffuse 0.05
                                    reflection 0.1
                                      specular 0.2 roughness 0.05}}
#declare cor2= <1,0,1>;

#declare tx_I=texture{ finish{
                       ambient 0.1 diffuse 0.1
                       reflection 0.25
                      specular 1 roughness 0.001}
                     pigment{color cor2 filter 1}}

#declare tx_L=texture { pigment {rgb cor3}
                                finish{
                                   ambient 0.1 diffuse 0.05
                                    reflection 0.4
                                      specular 0.3 roughness 0.1}}
                     

#declare tx_V=texture { pigment {rgb cor1}
                                finish{
                                   ambient 0.1 diffuse 0.05
                                    reflection 0.6
                                      specular 0.3 roughness 0.1}}

#declare chao = plane{z,0 texture{tx_chao}}

#declare L=difference{box{<-3,1,1>,<0,-2,4>}
                      box{<-2,1.5,2>,<0,-2.5,4.5>}
                      texture{tx_L}
                      interior{ior 1.5}
                     }

#declare I=union{cylinder{<2,0.5,1>,<2,0.5,4>,1}
                 sphere{<2,0.5,5>,0.5}
                 texture{tx_I}
                }

#declare V= cone{<5.5,0.5,1>,0.001
                 <5.5,0.5,4>,1.5
                 texture{tx_V}
                 interior{ior 2}
                 }

  
// Aqui está a cena, finalmente:

union{  
object{chao}
object{L}
object{I}
object{V}
}