// Editado por Edson Daniel dos Santos Mani Junior, 
// RA 104832.
// Exemplo de arquivo de descricao de cena para POV-ray
// Feito por Stolfi

#include "eixos.inc"
#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 0.00 >;
#declare raio_cena = 15.0;
#declare dir_camera = < 3.00, -5.00, 8.00 >;
#declare dist_camera = 15.0;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)


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

background{ color rgb < 0.50, 0.50, 0.50 > }

#declare vermelho_fosco = texture
{
  pigment{ color rgb <1.00, 0.00, 0.00>}
  finish { diffuse 1 specular 0.2 }
}

#declare verde_fosco = texture
{
  pigment{ color rgb <0.00, 1.00, 0.00>}
  finish { diffuse 1 specular 0.2 }
}

#declare azul_fosco = texture
{
  pigment{ color rgb <0.00, 0.00, 1.00>}
  finish { diffuse 1 specular 0.2 }
}

#declare branco_fosco = texture
{
  pigment{ color rgb <1.00, 1.00, 1.00>}
  finish { diffuse 1 specular 0.2 }
}

#declare azul_fosco = texture
{
  pigment{ color rgb <0.00, 0.00, 1.00>}
  finish { diffuse 1 specular 0.2 }
}

#declare cinza_fosco = texture
{
  pigment{ color rgb <0.40, 0.40, 0.40>}
  finish { diffuse 1 specular 0.2 }
}

#declare marrom_fosco = texture
{
  pigment{ color rgb <0.60, 0.30, 0.20>}
  finish { diffuse 1 specular 0.2 }
}


#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
  }

#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 }
  }

// ======================================================================
// DESCRIÇÃO DA CENA 

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

#macro arvore(n,alt,larg)
  
  #if(n = 0)
    box{ <-larg,-larg,-larg>, <larg,larg,larg> texture{verde_fosco} }

  #else

     union
    {
      /*Tronco */
      object{ cylinder{<0,0,0>,<0,0,alt>,larg  texture {cinza_fosco}}}
      
      
        object{ arvore(n-1,alt,larg)  rotate< 0,-30,0 > translate <0,0,alt> }
        object{ arvore(n-1,alt,larg)  rotate <30,0,0> translate <0,0,alt> }
        object{ arvore(n-1,alt,larg)  rotate< 0,30,0 > translate <0,0,alt> }
      
      
     }

    #end
#end


/*Aqui comeca a cen1a. */
union
{
  object{ eixos(3.00) }

  object{ chao  translate < 0,0,-5 > texture{ marrom_fosco } }

  object{ arvore(3,3,0.5)  texture{azul_fosco }}
}