// 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_branca = 
  texture{
    pigment{ color rgb < 2, 2, 2> }
  }

#declare tx_preta = 
  texture{
    pigment{ color rgb < 0, 0, 0> }
  }

#declare tx_madeira =
  texture{
    pigment{ color rgb < 0.80, 0.55, 0.40 > }
    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
  }

#declare tx_hyperglass = 
	texture {
		pigment { color rgb < 0.90 , 0.15 , 0.15 > filter 0.28 }
		finish { diffuse 0.33 ambient 0.55 }
	}

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

// Observacao: Quando usa essa razao aurea, o dodecaedro "degenera", porem o 
// icosaedro fica perfeito.. .Quando se usa a razao aurea (sqrt(5)-1)/2 o
// dodecaedro fica perfeito mas o icosaedro nao...
#declare phi = ((sqrt(3)-1)/2);
#declare dfo = 2;

#macro dodecaedro()
	union {
		intersection {
			plane { <1,0,phi> , dfo }
			plane { <1,0,-phi> , dfo }
			plane { <-1,0,phi> , dfo }
			plane { <-1,0,-phi> , dfo }
			plane { <phi,1,0> , dfo }
			plane { <phi,-1,0> , dfo }
			plane { <-phi,1,0> , dfo }
			plane { <-phi,-1,0> , dfo }
			plane { <0,phi,1> , dfo }
			plane { <0,phi,-1> , dfo }
			plane { <0,-phi,1> , dfo }
			plane { <0,-phi,-1> , dfo }
		}
	}
#end

#macro cubo()

union {
	intersection {
		plane { <1,0,0> , dfo }
		plane { <-1,0,0> , dfo }
		plane { <0,1,0> , dfo }
		plane { <0,-1,0> , dfo }
		plane { <0,0,1> , dfo }
		plane { <0,0,-1> , dfo }
	}
}

#end

#macro octaedro()
	union {
		intersection {
			plane { <1,1,1> , dfo }
			plane { <1,1,-1> , dfo }
			plane { <1,-1,1> , dfo }
			plane { <1,-1,-1> , dfo }
			plane { <-1,1,1> , dfo }
			plane { <-1,1,-1> , dfo }
			plane { <-1,-1,1> , dfo }
			plane { <-1,-1,-1> , dfo }
		}	
	}
#end

#macro icosaedro()
	union {
		intersection {
			octaedro()
			object { dodecaedro() scale scl }
		}
	}

#end

#macro semiregular()
	union {
		intersection {
			object { cubo() scale scl2}
			object { octaedro() }
		}
	}
#end

#declare scl = 1.00;
#declare scl2 = 0.87;

#declare chao = box { <-40,-40,-1> , <20,20,0> }

#include "eixos.inc"

union {
	object { chao texture { tx_xadrez } rotate<0,90,30> translate<-15,0,-3> }
	object { icosaedro() texture { tx_hyperglass } interior { ior 1.5 }  translate<0,3,2> rotate<0,0,30> }
	object { semiregular() texture { tx_vidro } interior { ior 3 }  translate<0,-5,1> rotate<0,0,45> }
}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 10;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 16.0;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)