/*
  slur.hh -- declare Slur

  (c) 1996--2000 Han-Wen Nienhuys
*/

#ifndef SLUR_HH
#define SLUR_HH

#include "lily-guile.hh"
#include "lily-proto.hh"
#include "rod.hh"

/**

   de-uglify-parameters -- list of 3 real constants. They define the
     valid areas for the middle control points. Used in de_uglyfy.
     They are a bit empirical.

   details -- alist containing contaning a few magic constants.

   note-columns -- list of elt pointers to note columns.

   attachment -- cons of symbols, '(LEFT-TYPE . RIGHT-TYPE), where
     both types may be alongside-stem, stem, head or loose-end
   
   direction -- up or down?

   y-free -- ? 
   
   control-points --


   
   Read-only
   =========
   
   extremity-rules --

   extremity-offset-alist --

   thickness --

*/
class Slur
{
public:
  static void add_column (Score_element*me,Score_element*col);
  static SCM brew_molecule (SCM);
  static void set_interface (Score_element*);
  static bool  has_interface (Score_element*);
  static Array<Offset> get_encompass_offset_arr (Score_element*me) ;
  static Bezier get_curve (Score_element*me) ;
  static Direction get_default_dir (Score_element*me) ;
  static SCM after_line_breaking (SCM);
  static SCM set_spacing_rods (SCM);
private:  
  static Real get_first_notecolumn_y (Score_element *me, Direction dir);
  static Offset broken_trend_offset (Score_element *me, Direction dir);
  static Offset get_attachment (Score_element*me,Direction dir, Score_element**common) ;
  static void de_uglyfy (Score_element*me,Slur_bezier_bow* bb, Real default_height);
  static void set_extremities (Score_element*me);
  static void set_control_points (Score_element*me);
  static Offset encompass_offset (Score_element*me,Score_element *col,Score_element**common);
};

#endif // SLUR_HH