Array<Offset> encompass_;
void blow_fit ();
+ void de_uglyfy ();
void calc_default ();
void to_canonic_form ();
void calc_tangent_controls ();
+ Real calc_enclosed_area_f () const;
+ void minimise_enclosed_area ();
+ Array<Offset> area_gradient_offset_arr ();
+
Real fit_factor () const;