// Exemplo de arquivo de descricao de cena para POV-ray
// Last edited on 2020-09-30 19:57:13 by jstolfi

// ======================================================================
// CORES E TEXTURAS

background{ color rgb < 0.5, 0.5, 0.5 > }



#declare branco = 
  texture{
    pigment{ color rgb < 1 1 1 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }
#declare preto = 
  texture{
    pigment{ color rgb < 0 0 0 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }


// ======================================================================
// DESCRI��O DA CENA 

#declare raio = 2.000;


#declare cubo =  
  box{ 
    <0,0,0>,<1,1,1> texture{branco}
  }
#declare esfera =
  sphere{ 
    <0.5,0.5,0.5>,0.5 texture{branco}
  }
#declare meu_cone =
  cone{
    <0.5,0.5,0>,0.5,<0.5,0.5,1>,0 texture{branco}
  }
#declare base=
  cylinder{
    <0,0,0>,<0,0,0.5>,1.5 texture{preto}
  }
#declare cilindro=
  cylinder{
    <0.5,0.5,0>,<0.5,0.5,1>,0.5 texture{branco}
  }
#declare dama=
  union{
    object{esfera}
    object{cilindro translate<0,0,1>}
    object{cubo translate<0,0,2>}
  }
#declare peao=
  union{
    object{meu_cone}
    object{object{meu_cone rotate 180*y} translate<1,0,2>}
    object{esfera translate<0,0,2> }
  }
#macro tabuleiro(m,n)
  object{cylinder{<0,0,0>,<0,0,-1>,10*m} texture{branco}}
  #declare i=1;
  #while(i<=m)
  #declare j=1;
    #while(j<=n)
      #if(i+j<6)
        union{object{base} object{peao translate<0,0,0.5>}translate<i*10,0,0> rotate z*(j*360/n)}
      #else
        #if(i+j>12)
          union{object{base} object{dama translate<0,0,0.5>}translate<i*10,0,0> rotate z*(j*360/n)}
        #else
          union{object{base} translate<i*10,0,0> rotate z*(j*360/n)}

        #end
      #end
      #declare j=j+1;
    #end
    #declare i=i+1;
  #end
  
#end
#include "eixos.inc"

// Aqui est� a cena, finalmente:
tabuleiro(10,5)

// union{
//   object{ eixos(3.00) }

//   object{ chao  translate < 0,0,-5 > texture{ tx_xadrez } }
//   object{ bolota  translate < -2,+1,+3 > texture{ tx_espelho } }
//   object{ bolinha translate < +5,+4,+2 > texture{ tx_vidro } 
//     interior { ior 1.01 }
//   }

//   difference{ 
//     union{
//       object{ bola } 
//       object{ pino }
//     }
//     object{ furo }
//   }
// }

#include "camlight.inc"
#declare centro_cena = < 0 ,0, 5 >;
#declare raio_cena = 20.0;
#declare dir_camera = < 0, 0.5, 1 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)