// Last edited on 2017-05-07 20:30:27 by stolfilocal
// Processed by remove-cam-lights

background{ color rgb < 1.00, 0.60, 0.85 > }

#declare tx_plastico =
  texture{
    pigment{ color rgb < 0.11, 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_cinza =
  texture{
    pigment{ color rgb < 0.75, 0.75, 0.75 > }
    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
  }

#declare raio = 0.500;
#declare Ra = 0.750;

#macro interpola_1(tt,tt0,vv0,tt1,vv1)
  #local c = ( (tt-tt0)/(tt1-tt0) );
  (vv0 + c*(vv1-vv0))
#end

#macro gera_segmento_1(m,p0,r0,p1,r1)
  union {
    #declare i = 0;
    #while (i<(m+1))
      #declare p = interpola_1(i,0,p0,m,p1);
      #declare r = interpola_1(i,0,r0,m,r1);
      sphere{ p, r }
      #declare i = i + 1;
    #end
  }
#end

#macro interpola_3(tt,tt0,tt1,A,B,C,D)
  #local AB = interpola_1(tt,tt0,A,tt1,B);
  #local BC = interpola_1(tt,tt0,B,tt1,C);
  #local CD = interpola_1(tt,tt0,C,tt1,D);
  #local ABC = interpola_1(tt,tt0,AB,tt1,BC);
  #local BCD = interpola_1(tt,tt0,BC,tt1,CD);
  #local ABCD = interpola_1(tt,tt0,ABC,tt1,BCD);
  ABCD
#end

#macro gera_segmento_3(m,p0,r0,p1,r1,p2,r2,p3,r3)
  union {
    #declare i = 0;
    #while (i<(m+1))
      #declare p = interpola_3(i,0,m,p0,p1,p2,p3);
      #declare r = interpola_3(i,0,m,r0,r1,r2,r3);
      sphere{ p, r }
      #declare i = i + 1;
    #end
  }
#end

#macro define_tentaculo_3(semente,n,PA,RA,PB,RB,PC,RC,PD,RD)
  #declare roleta = seed(semente);
  #declare i = 0;
  #while (i < (n-1))
    #declare PD[i] = PA[i+1] = (PC[i]+PB[i+1])/2;
    #declare i = i+1;
  #end
  #declare i = 0;
  #while (i < n)
    PB[i] = <>;
    RB[i] = 0.5*rand(roleta);
    #declare i = i+1;
  #end
#end

#macro gera_tentaculo_3(m,n,PA,RA,PB,RB,PC,RC,PD,RD)
  object { gera_segmento_3(m,PA,RA,PB,RB,PC,RC,PD,RD) }
#end

#macro gera_monstro(m,n)
  union {
    cylinder{ <0,0,0>, <0,0,5>, 1.5 }
    #declare i = 0;
    #while (i<n)
      #declare i = i+1;
    #end
  }
#end

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

#include "eixos.inc"

union{
  #declare p0 = <0,0,1>;
  #declare p1 = <0,0,9>;
  #declare p2 = <0,3,3>;
  #declare p3 = <0,-3,6>;
  // object { eixos(7.00) }
  object {chao    texture{tx_xadrez}}
  object { gera_segmento_3(50,p0,0.5,p2,2,p3,1,p1,1)
      texture{tx_fosca}}
}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 5.00 >;
#declare raio_cena = 8.0;
#declare dir_camera = < 14.00, -7.00, 4.00 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.00;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)