// 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_preta = 
  texture{
    pigment{ color rgb < 0.20, 0.20, 0.20 > }
    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_rosquinha = 
 texture{
   pigment{ color rgb < 0.566, 0.276, 0.076 > }
   finish{ diffuse 0.9 ambient 0.1 }
 }

#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
  }

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

#declare raio = 2.000;

// Partes da cena:
  
#declare bolinha = 
  sphere{ < 0,0,0 >, 0.60 }
 
#declare bolota = 
  sphere{ < 0,0,0 >, 1.50 }
 
#declare bola =
  sphere{
    < 0.00, 0.00, 0.00 >, raio 
    texture{ tx_plastico }
  }
  
#declare pino = 
  cylinder{
    < -2.00, +2.00, -1.00 >,
    < +2.00, -2.00, +1.00 >,
    0.75
    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 smallArm = 
  cylinder{
	<0,0, 0>
	<0,2, 0>
	0.1
	texture{tx_fosca}
}

#declare pin =  cylinder{
	<-1,0, 0>
	<+1,0, 0>
	0.15
    texture{tx_preta}
}

#declare roda = 
    union{
      difference{
	cylinder{
	  <0,0, 0>
	  <0.5,0, 0>
	  0.5
      }
      object{pin}
    }
}
#declare chao = 
  box{ <-70,-70,-4>, <+70,+70,-3> }

#declare flatPick = 
  box{ <-1,0,-0.05>, <+1,+2,+0.05>  texture{tx_fosca} }



#declare baseCone = cone { <0,0,0> , 0.8, <0,0,5>, 0.1 texture{tx_fosca}}
#declare leaf = union{
	difference{
	  box {<-0.1, -0.1, 0>,<+0.1, +0.1, 0.1> texture{tx_fosca} scale<1,3,10>}
	  cylinder{ <+0.2,0, 0>, <-0.2,0, 0>, 0.3 translate<0,0,0.5>}
	}
	cylinder{ <+0.1,0, 0>, <-0.1,0, 0>, 0.3 translate<0,0,0.5>}
}
#declare baseArm = union{
    object{baseCone scale 0.4}
    object{leaf translate<0,0,5> scale 0.4}
}
#macro arvore(n)

  #if (n=0)
	object{baseArm}
  #else
	union{
	  object{baseCone scale 0.5*n}
	  object{leaf scale 0.5 translate<0,0,(2.5*n)> }
	  object{arvore(n-1) rotate<45,0,-90> translate<0,0,1.5*n> }
	  object{arvore(n-1) rotate<45,0,30> translate<0,0,1.5*n> }
	  object{arvore(n-1)rotate<45,0,150> translate<0,0,1.5*n>}
	}
  #end
#end


#include "eixos.inc"

// Aqui está a cena, finalmente:
object{ chao texture{ tx_xadrez }  }

object{arvore(4) translate<2,2,-3> scale 0.3}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 0.00 >;
#declare raio_cena = 6.0;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 70.0;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)