// CORES E TEXTURAS

// background{ color rgb < 0.75, 0.80, 0.85 > }
background{ color rgb < 0.90, 0.20, 0.85 > }

#declare tx_tabuleiro = 
  texture{
    pigment{ color rgb < 0.7, 0.50, 0.40 > }
    //finish{ diffuse 0.8 ambient 0.1 specular 0.5 roughness 0.005 }
  }

#declare tx_pecas = 
  texture{
    pigment{ color rgb < 1.00, 0.80, 0.10 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_espelho = 
  texture{
    pigment{ color rgb < 1.00, 0.85, 0.30 > }
    // finish{ diffuse 0.2 reflection 0.7*< 1.00, 0.85, 0.30 > ambient 0.1 }
    finish{ diffuse 0.2 reflection 1.0*< 1.00, 1.00, 1.00 > ambient 0.1 }
  }

#declare tx_vidro = 
  texture{
    pigment{ color rgb < 0.85, 0.95, 1.00 > filter 0.70 }
    finish{ diffuse 0.03 reflection 0.25 ambient 0.02 specular 0.25 roughness 0.005 }
  }


#declare tx_xadrez =
  texture{
    pigment{ checker color rgb < 0.10, 0.32, 0.60 >, color rgb < 1.00, 0.97, 0.90 > }
    finish{ diffuse 0.9 ambient 0.1 }
    scale 2.0
  }

#include "eixos.inc"

#declare raio_tabuleiro = 50.0;

#declare tabuleiro = 
  cylinder{
    < +0.00, +0.00, -2.00 >,
    < +0.00, +0.00, +0.00 >,
    raio_tabuleiro
    texture{ tx_tabuleiro }
  }

#declare peao =
  union{
    cylinder{
      < +0.00, +0.00, +0.00 >,
      < +0.00, +0.00, +1.00 >,
      2.00
      texture{ tx_pecas }
    }
    cone{
      < +0.00, +0.00, +1.00 >,
      2.00
      < +0.00, +0.00, +4.00 >,
      1.00
      texture{ tx_pecas }
    }
    cylinder{
      < +0.00, +0.00, +4.00 >,
      < +0.00, +0.00, +5.00 >,
      1.00
      texture{ tx_pecas }
    }
    sphere{
    < 0.00, 0.00, +6.00 >,
    1.00
    texture{ tx_pecas }
    }
  }

#declare rainha =
  union{
    cylinder{
      < +0.00, +0.00, +0.00 >,
      < +0.00, +0.00, +1.50 >,
      3.00
      texture{ tx_pecas }
    }
    cone{
      < +0.00, +0.00, +1.50 >,
      3.00
      < +0.00, +0.00, +6.00 >,
      1.50
      texture{ tx_pecas }
    }
    cylinder{
      < +0.00, +0.00, +6.00 >,
      < +0.00, +0.00, +7.50 >,
      1.50
      texture{ tx_pecas }
    }
    cone{
      < +0.00, +0.00, +7.50 >,
      1.50
      < +0.00, +0.00, +9.00 >,
      2.00
      texture{ tx_pecas }
    }
    sphere{
    < 0.00, 0.00, +10.50 >,
    1.50
    texture{ tx_pecas }
    }
  }

object{ tabuleiro }

// #local pos_x = 0.0;
// #local pos_y = 0.0;

#macro desenhar_circulo(raio)
  #local theta = radians(360.0) / n;
  #local i = 0;
  #while (i < n)
    #local pos_x = raio * cos(i * theta);
    #local pos_y = raio * sin(i * theta);
    #if (mod(i, 4) = 0)
      object { rainha
               translate < pos_x, pos_y, 0 >
             }
    #else
      object { peao
               translate < pos_x, pos_y, 0 >
             }
    #end
    #local i = i + 1;
  #end
#end

#macro desenhar_tudo(m, n)
  desenhar_circulo(raio_tabuleiro - 5.0)
  desenhar_circulo((raio_tabuleiro - 5.0) * (m - 1) / m)
#end

#local nfileiras = 9;
#local ncasas = 27;

desenhar_tudo(nfileiras, ncasas)


// object{ eixos(raio_tabuleiro * 1.25) }

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 20.00 >;
#declare raio_cena = raio_tabuleiro * 1.5;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)