// Exemplo de arquivo de descricao de cena para POV-ray
// Last edited on 2003-09-04 15:25:26 by stolfi

// ======================================================================
// CÂMERA 

camera {
  location  <  -20.00, 20.00, 20.00 >  // Posição do observador.
  right     -0.75*x                // Largura RELATIVA da imagem.
  up        1.00*y                 // Altura RELATIVA da imagem.      
  sky       y                      // Qual direção é "para cima"?
  look_at   <  -2.00, 0.00, 0.00 >  // Para onde a câmera está apontando.
} 
// Nota: os parâmetros "right" e "up" devem ter a mesma proporção
// que os parâmetros ${WIDTH} e ${HEIGHT} no Makefile.

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

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

#declare raio = 2.000;

  plane { y, -2
   texture {
    pigment { checker color rgb < 0.20, 0.20, 0.30 >, color rgb < 0.30, 0.20, 0.30 > }
    finish { ambient 0.1 diffuse 0.9 }
   scale 0.5
   }
  }
  
#declare bz_name = "Asas";
#declare bz_scale = 0.4;
 
// PARTE 1

#declare A11 = <0,0,0>;
#declare A12 = <3,0,0.25>;
#declare A13 = <6,0,0.5>;
#declare A14 = <9,0,0.75>;

#declare A21 = <0,10,1.0>;
#declare A22 = <5,10,0.75>;
#declare A23 = <10,10,0.5>;
#declare A24 = <15,10,0.25>;

#declare A31 = <0,0,0>;
#declare A32 = <5,0,0.25>;
#declare A33 = <10,0,0.5>;
#declare A34 = <15,0,0.75>;

#declare A41 = <0,0,1.0>;
#declare A42 = <3,0,0.75>;
#declare A43 =  <6,0,0.5>;
#declare A44 =  <9,0,0.25>;
      
// PARTE 2

#declare B11 = <0,0,0>;
#declare B12 = <3,0,0.25>;
#declare B13 = <6,0,0.5>;
#declare B14 = <9,0,0.75>;

#declare B21 = <0,-10,1.0>;
#declare B22 = <5,-10,0.75>;
#declare B23 = <10,-10,0.5>;
#declare B24 = <15,-10,0.25>;

#declare B31 = <0,0,0>;
#declare B32 = <5,0,0.25>;
#declare B33 = <10,0,0.5>;
#declare B34 = <15,0,0.75>;

#declare B41 = <0,0,1.0>;
#declare B42 = <3,0,0.75>;
#declare B43 =  <6,0,0.5>;
#declare B44 =  <9,0,0.25>;

// PARTE 3

#declare C11 = <0,0,0>;
#declare C12 = <-3,0,0.25>;
#declare C13 = <-6,0,0.5>;
#declare C14 = <-9,0,0.75>;

#declare C21 = <0,-10,1.0>;
#declare C22 = <-5,-10,0.75>;
#declare C23 = <-10,-10,0.5>;
#declare C24 = <-15,-10,0.25>;

#declare C31 = <0,0,0>;
#declare C32 = <-5,0,0.25>;
#declare C33 = <-10,0,0.5>;
#declare C34 = <-15,0,0.75>;

#declare C41 = <0,0,1.0>;
#declare C42 = <-3,0,0.75>;
#declare C43 =  <-6,0,0.5>;
#declare C44 =  <-9,0,0.25>;

// PARTE 4

#declare D11 = <0,0,0>;
#declare D12 = <-3,0,0.25>;
#declare D13 = <-6,0,0.5>;
#declare D14 = <-9,0,0.75>;

#declare D21 = <0,10,1.0>;
#declare D22 = <-5,10,0.75>;
#declare D23 = <-10,10,0.5>;
#declare D24 = <-15,10,0.25>;

#declare D31 = <0,0,0>;
#declare D32 = <-5,0,0.25>;
#declare D33 = <-10,0,0.5>;
#declare D34 = <-15,0,0.75>;

#declare D41 = <0,0,1.0>;
#declare D42 = <-3,0,0.75>;
#declare D43 =  <-6,0,0.5>;
#declare D44 =  <-9,0,0.25>;


//#include "bz_things.inc"

#declare Asa1 =
  union{
    bicubic_patch {
      type 0
      flatness 0
      u_steps 4
      v_steps 4
      A11,A12,A13,A14,
      A21,A22,A23,A24,
      A31,A32,A33,A34,
      A41,A42,A43,A44
      
      pigment { color rgb <0.6,0.3,0.7> }
    }
   // object { Asa1 }
  }

  #declare Asa2 =
  union{
    bicubic_patch {
      type 0
      flatness 0
      u_steps 4
      v_steps 4
      B11,B12,B13,B14,
      B21,B22,B23,B24,
      B31,B32,B33,B34,
      B41,B42,B43,B44
      
      pigment { color rgb <0.7,0.4,0.2> }
    }
   // object { Asa1 }
  }

  #declare Asa3 =
  union{
    bicubic_patch {
      type 0
      flatness 0
      u_steps 4
      v_steps 4
      C11,C12,C13,C14,
      C21,C22,C23,C24,
      C31,C32,C33,C34,
      C41,C42,C43,C44
      
      pigment { color rgb <0.5,0.6,0.4> }
    }
   // object { Asa1 }
  }
  
  #declare Asa4 =
  union{
    bicubic_patch {
      type 0
      flatness 0
      u_steps 4
      v_steps 4
      D11,D12,D13,D14,
      D21,D22,D23,D24,
      D31,D32,D33,D34,
      D41,D42,D43,D44
      
      pigment { color rgb <0.3,0.4,0.7> }
    }
   // object { Asa1 }
  }
// Aqui está a cena, finalmente:
  
union{
object{Asa1}
object{Asa2}
object{Asa3}
object{Asa4}

}