// 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 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 < 1.00, 0.00, 0.00 > }
    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
  }

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

#declare raio = 2.000;
#declare origem = <0,0,0>;
#declare centro = <10,20,30>*2;
// Partes da cena:
  
/*#declare bolinhaPerna1 =
  sphere{ origem, 0.2 }
 
#declare bolinhaPerna2 =
  sphere{<2,0,0>, 0.2 }

#declare bolinhaPerna3 =
  sphere{<0,2,0>, 0.2 }

#declare bolinhaPerna4 =
  sphere{<2,2,0>, 0.2 }
 
#declare perna1 = cylinder {<0, 0, 0.05>, <0, 0, 4>, 0.2 }
#declare perna2 = cylinder {<2, 0, 0.05>, <2, 0, 2>, 0.2 }
#declare perna3 = cylinder {<0, 2, 0.05>, <0, 2, 4>, 0.2 }
#declare perna4 = cylinder {<2, 2, 0.05>, <2, 2, 2>, 0.2 }
#declare assento = box{<-0.2, -0.2, 1.8>, <2.2,2.2,2.2>}
#declare canto1 = cone {<0,0,6>, 0.3
  <0,0,0>, 0
}
#declare canto3 = cone {<0,2,6>, 0.3
  <0,2,0>, 0
}
#declare encosto = box {<-0.2,0,3>, <0.2,2,4>}
#declare buraco = cone {<0,1,3.5>, 0
  <1,1,3.5>, 3
}


#declare bola =
  sphere{
    origem, raio 
    texture{ tx_plastico }
  }
  
#declare pino = 
  cylinder{
    < 2.00, -2.00, -1.00 >,
    < -2.00, 2.00, +1.00 >,
    0.5
    texture{ tx_fosca }
  }
  
#declare furo = 
  cylinder{
    < -1.00, -2.00, -2.00 >,
    < +1.00, +2.00, +2.00 >,
    0.75*raio
    texture{ tx_fosca }
  }

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

#declare peao =
  union{
    cone{ <0,0,0>,0.1
    <0,0,0.2>,0 texture {tx_plastico} pigment { color rgb < 1.00, 1.00, 0.00 > } translate <0,0,0.4>}
    box{<-0.1,-0.1,0>, <0.1,0.1,0.2> texture {tx_plastico} pigment { color rgb < 1.00, 1.00, 0.00 > } translate <0,0,0.2>}
    sphere{<0,0,0>, 0.2 texture {tx_plastico}  pigment { color rgb < 1.00, 1.00, 0.00 > }}
    
  }

#declare dama =
  union {
    sphere{<0,0,0>, 0.1 texture {tx_plastico} translate <0,0,0.4>}
    cone{ <0,0,0>,0.1
    <0,0,0.2>,0 texture {tx_plastico} translate <0,0,0.2> }
    box{<-0.1,-0.1,0>, <0.1,0.1,0.2> texture {tx_plastico}}
    
  }

#declare tabuleiro = difference {
  cylinder {<0,0,0>, <0,0,0.0001>, 2 texture {tx_vidro}}
  cylinder {<0,0,1>, <0,0,-1>, 1  texture {tx_plastico}}
}

#macro cria ( m,n )
  #declare i = 1;
  #while (i <= m)
    object {tabuleiro translate <0,0,-i/10> scale <i,i,1>}
    #declare j = 1;
    #while (j <= n)
      #if (mod(i,2) = 0 & mod(j,2) = 0)
        object{dama translate <i,j,-i/10>} 
      #end
      #if (mod(i,2) = 1 & mod(j,2) = 1)
        object{peao translate <i,j,-i/10>}
      #end
      #declare j = j+1;
    #end
    #declare i = i+1;
  #end

#end

#include "eixos.inc"


 cria(4,4) 
//object {peao}
// Aqui est� a cena, finalmente:
/*
pe
union{
  object{ eixos(3.00) }

  union {
    object{ bolinhaPerna1 texture{ tx_xadrez }  pigment{ color rgb < 1.00, 1.00, 0.00 > }}
    difference {
      object{perna1 texture {tx_plastico}  pigment{ color rgb < 0.80, 0.70, 0.50 > }}
      object{canto1 texture {tx_plastico}}
    }
  }
  union {
    object{ bolinhaPerna2 texture{ tx_xadrez }   pigment{ color rgb < 1.00, 1.00, 0.00 > }}
    object{perna2 texture {tx_plastico}  pigment{ color rgb < 0.80, 0.70, 0.50 > }}
  }
  union {
    object{ bolinhaPerna3 texture{ tx_xadrez }  pigment{ color rgb < 1.00, 1.00, 0.00 > } }
        difference {
      object{perna3 texture {tx_plastico}  pigment{ color rgb < 0.80, 0.70, 0.50 > }}
      object{canto3 texture {tx_plastico}}
    }
  }
  union {
    object{ bolinhaPerna4 texture{ tx_xadrez } pigment{ color rgb < 1.00, 1.00, 0.00 > } }
    object{perna4 texture {tx_plastico}  pigment{ color rgb < 0.80, 0.70, 0.50 > }}
  }
  object {assento texture {tx_fosca } pigment{ color rgb < 0.20, 0.20, 0.20 > }}
  difference { object {encosto texture {tx_vidro}}
   object {buraco texture {tx_plastico}}
  }
  object{ bolota  translate < -2,+1,+3 > texture{ tx_espelho } }
  object{ bolinha translate < +5,+4,+2 > texture{ tx_vidro }
    interior { ior 1.01 }
}*/


#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 6.0;
#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)