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

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

#declare tx_plastico = 
  texture{
    pigment{ color rgb < 0.10, 0.80, 1.00 > }
    finish{ diffuse 0.8 ambient 0.1 specular 0.5 roughness 0.005 }
  }

#declare tx_fosca = 
  texture{
    pigment{ color rgb < 1.0, 1.0, 1.0 > }
    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 }
  }

#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
  }

// ======================================================================
// DESCRICAO DA CENA 

#declare raio = 1.000;
#declare space = 2.000;

// Partes da cena:


// peao
#declare base_peao = 
  cylinder{
    < 0, 0.00, 0.00 >
    < 0, 0.00, 0.50 >,
    raio
    texture{ tx_fosca }
  }

#declare coluna_peao = 
  cylinder{
    < 0, 0.00, 0.50 >
    < 0, 0.00, 1.50 >,
    raio * 0.5
    texture{ tx_fosca }
  }

#declare topo_peao = 
  sphere{
    < 0, 0.00, 2.00 >
    raio * 0.8
    texture{ tx_fosca }
  }

// peoes

#declare peao = 
    union{
        object{ base_peao }
        object{ coluna_peao }
        object{ topo_peao }
    }

#declare R1 = 4;
#declare R2 = 4;
#declare R3 = 6;
#declare PI = 3.1416;
#declare i = 0;

#while (i <= 2.0 * PI)


    #declare peao_x = sin(i) * R1;
    #declare peao_y = cos(i) * R1;

    object { peao translate <peao_x, peao_y> }


  #declare i = i + (PI / 4);
#end

// dama

#declare base_dama = 
  cylinder{
    < -space, 0.00, 0.00 >
    < -space, 0.00, 0.50 >,
    raio
    texture{ tx_fosca }
  }

#declare coluna_dama = 
  cylinder{
    < -space, 0.00, 0.50 >
    < -space, 0.00, 1.50 >,
    raio * 0.5
    texture{ tx_fosca }
  }

#declare topo_dama = 
  cylinder{
    < space, 0.00, 1.50 >
    < space, 0.00, 2.50 >,
    raio
    texture{ tx_fosca }
  }



// #declare chao = 
//   box{ <-20,-20,-1>, <+20,+20,0> }

#include "eixos.inc"

// Aqui est� a cena, finalmente:
#declare dama = 
    union{
        object{ base_dama }
        object{ coluna_dama }
        object{ topo_dama }
    }

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 20.0;
#declare dir_camera = < 0.00, 45.00, 45.00 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)