// Exemplo de arquivo de descricao de cena para POV-ray
// Last edited on 2003-07-31 12:50:37 by stolfi
#include "colors.inc"

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

camera {
  location  < 0.00,- 40.00,4.00 >  // Posição do observador.
  right     <-0.6,0,0>                 // Largura RELATIVA da imagem.
  up        <0,0,0.8>                 // Altura RELATIVA da imagem.      
  sky       <0,0,1>                      // Qual direção é "para cima"?
  look_at   <1.00, 4.00,3.00 >  // 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 

#declare A11=<-0.3,0,2>;
#declare A12=<-0.2,0.3,2>;
#declare A13=<0.2,0.3,2>;
#declare A14=<0.3,0,2>;
#declare A21=<-0.7,0,1.5>;
#declare A22=<-0.5,0.8,1.5>;
#declare A23=<0.5,0.8,1.5>;
#declare A24=<0.7,0,1.5>;
#declare A31=<-0.7,0,0.5>;
#declare A32=<-0.5,0.6,0.5>;
#declare A33=<0.5,0.6,0.5>;
#declare A34=<0.7,0,0.5>;
#declare A41=<-0.3,0,0>;
#declare A42=<-0.2,0.3,0>;;
#declare A43=<0.2,0.3,0>;
#declare A44=<0.3,0,0>;

#declare B11=<-0.4,0.6,0.7>;
#declare B12=<-0.3,0.6,0.7>;
#declare B13=<-0.2,0.6,0.7>;
#declare B14=<-0.1,0.6,0.7>;
#declare B21=<-0.37,0.6,0.6>;
#declare B22=<-0.33,0.6,0.6>;
#declare B23=<-0.17,0.6,0.6>;
#declare B24=<-0.13,0.6,0.6>;
#declare B31=<-0.32,0.6,0.4>;
#declare B32=<-0.28,0.6,0.4>;
#declare B33=<-0.22,0.6,0.4>;
#declare B34=<-0.18,0.6,0.4>;
#declare B41=<-0.28,0.6,0.3>;
#declare B42=<-0.26,0.6,0.2>;
#declare B43=<-0.24,0.6,0.2>;
#declare B44=<-0.22,0.6,0.3>;


#declare bz_scale = 0.17;
#include "bz-things.inc"

#declare ret1 = 
  union{
    bicubic_patch{
      type 1
      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 {Flesh }
    }
    object { bz_grid_A }
  }

#declare ret2 = 
  union{
    bicubic_patch{
      type 1
      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{White }
    }
    object { bz_grid_B }
  }
background{ color rgb < 0.75, 0.80, 0.85 > }
union{
object{ret1}
object{ret1 scale <1,-1,1>}
object{ret2 translate<0.1,0,0.5>}
object{ret2 scale<-1,1,1> translate<-0.1,0,0.5>}
scale<1.5,2,0.5> rotate -180*y rotate 60*x}