/*
   The puzzling fancy triangle.
   Why did it work with fanciness = 5, but not with fanciness = 6 ?
   I wish I had thought of this and done it on purpose.

   Before ever getting to a good solid draw_distance function,
   draw_fancier has been called 6 times, each time dividing
   the distance by three. They are integer divisions, so after
   a while the distance being drawn was always zero.

   This is the original version with the mistake in it, a corrected
   version (using doubles) is below.


#include "library.h"

void draw_fancier(const int dist, const int fanciness)
{ if (fanciness == 0)
    draw_distance(dist);
  else
  { draw_fancier(dist/3, fanciness - 1);
    turn_left_by_degrees(60);
    draw_fancier(dist/3, fanciness - 1);
    turn_right_by_degrees(120);
    draw_fancier(dist/3, fanciness - 1);
    turn_left_by_degrees(60);
    draw_fancier(dist/3, fanciness - 1); } }

void draw_triangle(const int side, const int fanciness)
{ draw_fancier(side, fanciness);
  turn_right_by_degrees(120);
  draw_fancier(side, fanciness);
  turn_right_by_degrees(120);
  draw_fancier(side, fanciness);
  turn_right_by_degrees(120); }

void main()
{ make_window(600, 600);
  set_pen_color(color::black);
  move_to(300, 150);
  set_heading_degrees(120);
  draw_triangle(300, 6); }

*/

#include "library.h"

void draw_fancier(const double dist, const int fanciness)
{ if (fanciness == 0)
    draw_distance(dist);
  else
  { draw_fancier(dist/3, fanciness - 1);
    turn_left_by_degrees(60);
    draw_fancier(dist/3, fanciness - 1);
    turn_right_by_degrees(120);
    draw_fancier(dist/3, fanciness - 1);
    turn_left_by_degrees(60);
    draw_fancier(dist/3, fanciness - 1); } }

void draw_triangle(const double side, const int fanciness)
{ draw_fancier(side, fanciness);
  turn_right_by_degrees(120);
  draw_fancier(side, fanciness);
  turn_right_by_degrees(120);
  draw_fancier(side, fanciness);
  turn_right_by_degrees(120); }

void main()
{ make_window(600, 600);
  set_pen_color(color::black);
  move_to(300, 50);
  set_heading_degrees(150);
  draw_triangle(400, 6); }