// Exemplo de arquivo de descricao de cena para POV-ray
// Last edited on 2010-03-04 15:44:01 by stolfi

// ======================================================================
// 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 < 1.00, 0.80, 0.10 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_nota = 
  texture{
    pigment{ color rgb < 0.00, 0.80, 0.00 > }
  }

#declare tx_metal = 
  texture{
	pigment{color rgb < 1.00, 0.00, 0.00 > }
	 finish{ reflection 0.30 }
	}

#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
  }

#declare tx_xadrez2 =
  texture{
    pigment{ checker color rgb < 0.00, 0.00, 0.00 >, color rgb < 1.00, 1.00, 1.00 > }
    finish{ diffuse 1.0 ambient 1.0 }
    scale 5.0
  }


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

// Partes da cena:
  
 
  
#declare tronco = 
  cylinder{
    < +0.00, +0.00, +0.00 >,
    < +0.00, +0.00, +5.00 >,
    1.00
  }	




#declare chao = 
	box{
		<+20.00,-20.00,-1.00>,
		<-20.00,+20.00,-0.00>
	}






#include "eixos.inc"

#macro tronco1(n,raio)
   cylinder{
	< 0, 0,  0>,
	< 0, 0, n-1 >,
	raio
      }
#end


#macro nota(n,raio)
   box{
	< 0, 0,0  >,
	< 0, 0.5, 0.5 >
      }
#end

// Aqui está a cena, finalmente:
#macro arvore(n,raio)
  #if (n=1)
    object{nota(n,raio*0.75) texture{tx_nota}}
  #else
  union{
    object{tronco1(n,raio) texture{tx_fosca}}
    object{arvore(n-1,raio*0.6) rotate x*180/n translate<0,0,n-1>}
    object{arvore(n-1,raio*0.6) rotate -x*180/n translate<0,0,n-1>}
  }
  #end
#end

union{
  object{ chao texture{tx_xadrez2} }
  object{ eixos(3.00) }
  object{ arvore(8,1)}
}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 50.0;
#declare dir_camera = < 8.00, 0.00, 4.00 >;
#declare dist_camera = 100.0;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)