// Last edited on 2013-12-11 11:16:27 by stolfilocal
// Processed by remove-cam-lights

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_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_azul =
  texture{
    pigment{ color rgb < 0.00, 0.00, 1.00 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_vermelho =
  texture{
    pigment{ color rgb < 1.00, 0.00, 0.00 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_verde =
  texture{
    pigment{ color rgb < 0.00, 1.00, 0.00 > }
    finish{ diffuse 0.9 ambient 0.1 }

#declare tx_amarelo =
  texture{
    pigment{ color rgb < 1.00, 1.00, 0.00 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_cinza =
  texture{
    pigment{ color rgb < 0.80, 0.80, 0.80 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_grafite =
  texture{
    pigment{ color rgb < 0.70, 0.70, 0.70 > }
    finish{ diffuse 0.7  ambient 0.1 specular 0.25  }
  }

#declare tx_prata =
  texture{
    pigment{ color rgb < 0.75, 0.75, 0.75 > }
    finish{ diffuse 0.9  ambient 0.3 specular 0.25  }
  }

#declare tx_preto =
  texture{
    pigment{ color rgb < 0.2, 0.2, 0.2 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

}

#macro bola( r )
  union{
        sphere{ < 0,0,0 >, r }          // r = 0.2
  }
#end

#declare cabeca =
  sphere{ < 0,0,0 >, 1 }

#macro interpola2(p0, p1, tt)

 #local p = (1-tt)*p0 + tt*p1 ;
  p

#end

#macro desenha(p0, p1, n)

  #declare nn = 0;

union{

  #while(nn < n)

    object{ bola(0.5*(n - nn)/n) translate interpola2(p0, p1, nn/n) texture{tx_azul} }
    #declare  nn = nn + 1;
  #end

}

#end

#macro interpola4(p0, p1, p2, p3, tt)

  #local p01 = interpola2(p0,p1,tt);
  #local p12 = interpola2(p1,p2,tt);

  #local p23 = interpola2(p2,p3,tt);

  #local p012 = interpola2(p01,p2,tt);

  #local p123 = interpola2(p12,p3,tt);

  #local p0123 = interpola2(p012,p123,tt);
   p0123

#end

#macro curva(p0, p1, p2, p3, N)

  #declare nn = 0;

union{

  #while(nn < N)

    object{ bola(0.4*(N - nn)/N) translate interpola4(p0, p1, p2, p3, nn/N) texture{tx_azul} }
    #declare  nn = nn + 1;
  #end

}

#end

#macro polvo( )

  #if(clock < 0.5)

    #local A = <0,0,0>;
    #local B = <3,1*clock*clock,2*clock>;
    #local C = <1.5,1.0*clock,2.5*clock>;
    #local D = <2.5,2*clock*clock*clock,3*clock*clock*clock>;

  #else

    #local A = <0,0,0>;
    #local B = <3,1*(1-clock)*(1-clock),2*(1-clock)>;
    #local C = <1.5,1.0*(1-clock),2.5*(1-clock)>;
    #local D = <2.5,2*(1-clock)*(1-clock),3*(1-clock)*(1-clock)*(1-clock)>;

  #end

  object { curva( A, B, C, D ,100 ) translate <0.5,0,0>}

  object { curva( A, -B, C, -D ,100 ) translate <-0.5,0,0>}

  object { curva( A, B, C, D ,100 ) rotate <-45,45,45> }

  object { cabeca translate< 0, 0, 0.5 > texture{ tx_azul } }

#end

#include "eixos.inc"

union{

  object{ eixos(3.00) }

  polvo()

}

#include "camlight.inc"

#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 6.0;
#declare dir_camera = < 14.00, 40.00, 4.00 >;
#declare dist_camera = 16.0;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)