// Last edited on 2003-12-14 19:51:56 by stolfi
// Exemplo de arquivo de descricao de cena para POV-ray

// ======================================================================
#declare zoom = 0.9;

#declare ctr = < 0, 0, 0 >;
#declare camDir = < 10,0,60 >*0.9;

camera {
  location   ctr + 1.00*camDir
  right      1.00*x
  up         1.00*z
  sky        z
  look_at    ctr
}
 

// ======================================================================
// FONTES DE LUZ

light_source {
  10 * < 50, -10.0, +10.0 >              // Posição da lâmpada.
  color rgb 1.2 * < 1.00, 1.00, 1.00 >   // Intensidade e corda luz.
} 

light_source {
  10 * < -50.0, 10.0, 70.0 >             // Posição da lâmpada.
  color rgb 0.8 * < 1.00, 1.00, 1.00 >   // Intensidade e corda luz.
} 

light_source {
  10 * < 0.0, -10.0, 10.0 >             // Posição da lâmpada.
  color rgb 0.9 * < 1.00, 1.00, 1.00 >   // Intensidade e corda luz.
} 

// ======================================================================
// DESCRIÇÃO DA CENA 
#declare C = 1/255;
background{ color rgb < 0.95, 0.90, 0.68 > }


#declare cor_cristal = <0.9,0.7,1>;
#declare tx_cristal = 
  texture {
    finish{
      ambient 0.1 diffuse 0.1
      reflection 0.15
      specular 1 roughness 0.001
    }
    pigment { color cor_cristal filter 1 }
  }

#declare cor_espelho = <0.1,0.1,0.2>;
#declare tx_espelho =
  texture {
    pigment { rgb cor_espelho }
    finish { ambient 0.05 
       diffuse 0.05 
       reflection 0.95
       specular 0.20 roughness 0.05 
     }
  }
#declare cor_metal = <0.4,0.4,0.4>;
#declare tx_metalica =
  texture {
    pigment { rgb cor_metal }
    finish { ambient 0.1 
       diffuse 0.1
       specular 1
             roughness .001 
       reflection {0.75 metallic}
     }
  }

#declare azul = 
  texture {
    pigment { color rgb < 0.10, 0.80, 1.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare amarelo = 
  texture {
    pigment { color rgb < 1.00, 0.80, 0.10 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare vermelho = 
  texture {
    pigment { color rgb < 1.0, 0.0, 0.0 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }
#declare verde = 
  texture {
    pigment { color rgb < 0.0, 1.0, 0.0 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }
#declare laranja = 
  texture {
    pigment { color rgb < 252*C, 200*C, 81*C > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare preto = 
  texture {
    pigment { color rgb < 0*C, 0*C, 0*C > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }
#declare xadrez =
texture {
pigment {checker color rgb <1,1,0.9>
  color rgb <0,0,0.9>
}
}

// Objetos
// Os eixos para auxilio
#declare  eixo_x = 
   cylinder {
    < -50, 0, 0 >,
    < 50, 0, 0 >,
    0.1
    texture { vermelho }
  }
#declare  eixo_y = 
   cylinder {
    < -50, 0, 0 >,
    < 50, 0, 0 >,
    0.1
    texture { verde }
    rotate <0,0,90>
  }
#declare  eixo_z = 
   cylinder {
    < -50, 0, 0 >,
    < 50, 0, 0 >,
    0.1
    texture { azul }
    rotate <90,90,0>
  }

#declare eixos = 
union{
  object{eixo_x}
  object{eixo_y}
  object{eixo_z}
}

//O Chao
#declare chao =
box{
  <-50,-50,0>,
  <50,50,-1>
  texture { xadrez }
}
//--------------------------------------------------------//
//
#declare corte = 
cylinder{
  <0,0,-6>,
  <0,0,0>,
  5
  texture{tx_cristal}
  }
            
#declare fact = 0.3;
#declare placa =
difference {
   object{
     box{
     <-10,-10,-1>,
     <10,10,-5>
     texture{tx_metalica}
     }
   }
   object{
    corte
    scale<2,2,1>
    translate<10,10,0>
   }
   object{
    corte
    scale<2,2,1>
    translate<10,-10,0>
   }
   object{
    corte
    scale<2,2,1>
    translate<-10,-10,0>
   }
   object{
    corte
    scale<2,2,1>
    translate<-10,10,0>
   }
}//difference

//Letra L
#declare letra_L = 
difference{
object{
box{
<-6,-10,-6>
<6,10,-1>
texture{azul}
}
}
object{
box{
<-1,-3,-7>
<7,11,-0>
texture{azul}
}
}
}//difference

//Letra I
#declare letra_I = 
box{
<-5,-2,-6>
<5,2,-1>
texture{verde}
}

//Letra V
#declare letra_V1 = 
union{
object{
box{
<-5,-2,-6>
<10,2,-1>
texture{vermelho}
}
rotate 30*z
translate<0,-4,0>
}

object{
box{
<-5,-2,-6>
<10,2,-1>
texture{vermelho}
}
rotate -30*z
translate<0,4,0>
}
}//union 

#declare letra_V =
difference{
object{letra_V1}
object{
box{
<-5,-3,-7>
<5,3,-0>
texture{vermelho}
}
rotate 90*z
translate <9,0,0>
}
object{
box{
<-5,-3,-7>
<5,3,-0>
texture{vermelho}
}
translate <0,6.5,0>
scale<6,0,0>
rotate 90*z
}
}



// Aqui está a cena, finalmente:

 sky_sphere {
    pigment {
      gradient z
      color_map {
        [(1-cos(radians( 30)))/2 color <247*C,230*C,255*C>]
        [(1-cos(radians(120)))/2 color <255*C,2*C,80*C>]
      }
      scale 10
      translate -1
    }
  }
union{
//object{eixos}
  object{placa
  scale<1.5,3,3>
        translate<0,0,1>}
object{letra_L
  rotate 90*z
  scale<0.3,0.3,0.6>
      translate<-2,-4.4,5>}
object{letra_I
  scale<0.6,0.6,0.6>
        translate<-2.3,0,5>}
object{letra_V
  scale<0.6,0.45,0.6>
        translate<-2.8,5.5,5>}

}