// Last edited on 2019-07-17 00:46:21 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_vermelho =
  texture{
    pigment{ color rgb < 0.80, 0.10, 0.10 > }
    finish{ diffuse 0.8 ambient 0.1 specular 0.5 roughness 0.005 }
  }

#declare tx_pink =
  texture{
    pigment{ color rgb < 0.98, 0.05, 0.75 > }
    finish{ diffuse 0.8 ambient 0.2 specular 0.5 roughness 0.005 }
  }

#declare tx_orange =
  texture{
    pigment{ color rgb < 0.98, 0.20, 0.20 > }
    finish{ diffuse 0.8 ambient 0.1 specular 0.5 roughness 0.05 }
  }

#declare tx_verde =
  texture{
    pigment{ color rgb < 0.20, 0.90, 0.10 > }
    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_xadrez =
  texture{
    pigment{ checker color rgb < 0.00, 0.0, 0.00 >, color rgb < 1.00, 0.97, 0.90 > }
    finish{ diffuse 0.9 ambient 0.1 }
    scale 1.0
  }

#declare bola =
  union {

          sphere{ < 0,0,2 >, 1.50
          texture{ tx_verde }
          }
  }

#include "eixos.inc"

#macro interpolalin(t0, v0, t1, v1, tt)
        #local r=(tt-t0)/(t1-t0);
        #local s=1-r;
        #local vv=s*v0+r*v1;
        vv
#end

#macro arcobezier(t0,t1,A,B,C,D,tt)
        #local AB=interpolalin(t0,A,t1,B,tt);
        #local BC=interpolalin(t0,B,t1,C,tt);
        #local CD=interpolalin(t0,C,t1,D,tt);

        #local ABC=interpolalin(t0,AB,t1,BC,tt);
        #local BCD=interpolalin(t0,BC,t1,CD,tt);

        #local ABCD=interpolalin(t0,ABC,t1,BCD,tt);
        ABCD
#end

#macro curvas()
        union{
                #declare t0=0.00;
                #declare t1=0.99;

                #declare A=<0,0,0>;
                #declare B=<0,10,0>;
                #declare C=<0,10,5>;
                #declare D=<0,10,10>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate arcobezier(t0,t1,A,B,C,D,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare A=<0,10,10>;
                #declare B=<-3,7,14>;
                #declare C=<-3,3,5>;
                #declare D=<0,0,10>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate arcobezier(t0,t1,A,B,C,D,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare A=<0,0,10>;
                #declare B=<3,-3,12>;
                #declare C=<5,2,13>;
                #declare D=<2,5,15>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate arcobezier(t0,t1,A,B,C,D,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare A=<2,5,15>;
                #declare B=<5,5,7>;
                #declare C=<2,2,3>;
                #declare D=<0,0,0>;
                #declare tt=t0;

                #while(tt<t1)
                        object{ bola translate arcobezier(t0,t1,A,B,C,D,tt)}
                        #declare tt = tt+0.01;
                #end

        }
#end

#macro palito()
        union{
                #declare t0=0.00;
                #declare t1=0.40;

                #declare v0=<0,0,0>;
                #declare v1=<0,10,0>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate interpolalin(t0,v0,t1,v1,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare v0=<0,10,0>;
                #declare v1=<0,10,10>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate interpolalin(t0,v0,t1,v1,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare v0=<0,10,10>;
                #declare v1=<0,0,10>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate interpolalin(t0,v0,t1,v1,tt)}
                        #declare tt = tt+0.01;
                #end

                #declare v0=<0,0,10>;
                #declare v1=<0,0,0>;
                #declare tt=t0;
                #while(tt<t1)
                        object{ bola translate interpolalin(t0,v0,t1,v1,tt)}
                        #declare tt = tt+0.01;
                #end

        }
#end

#macro roda(a,b,n,r)

        union{
                #while (a<b)
                        object { bola translate <r*sin(a), 0, r*cos(a)> }
                        #declare a = a+1/n;
                #end
        }
#end

object{curvas()}

// object{ eixos(15.00) }

#include "camlight.inc"
#declare centro_cena = < 10.00, +10.00, 12.00>;
#declare raio_cena = 18.0;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 30*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)