release: 1.1.37

[lilypond.git] / lily / include / beam.hh

diff --git a/lily/include/beam.hh b/lily/include/beam.hh
index ad775b7a3c8e60db44ab0967c36a14fbd66d8005..fcf477430e5241d3f3ee0ce5e0a4bd9a167ee56f 100644 (file)
--- a/lily/include/beam.hh
+++ b/lily/include/beam.hh
@@ -1,50 +1,82 @@
 /*
   beam.hh -- part of GNU LilyPond
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--1999 Han-Wen Nienhuys
 */
 
 #ifndef BEAM_HH
 #define BEAM_HH
+
 #include "lily-proto.hh"
 #include "directional-spanner.hh"
-#include "plist.hh"
+#include "stem-info.hh"
+
+
+/** a beam connects multiple stems.
+
+  Beam adjusts the stems its owns to make sure that they reach the
+  beam and that point in the correct direction
+
+elt property:
+
+damping: amount of beam slope damping. (int)
+
+should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams 
 
-/** a beam connects multiple stems Beam adjusts the stems its owns to
-  make sure that they reach the beam and that point in the correct
-  direction */
-class Beam:  public Directional_spanner {
+
+*/
+class Beam : public Directional_spanner  {
 public:
-  Link_array<Stem> stems;
+  /** 
+    The beams should be prevented to conflict with the stafflines, 
+    especially at small slopes.
+    */
+  enum Quantisation { NONE, NORMAL, TRADITIONAL, TEST };
+  enum Dir_algorithm { /* DOWN=-1, UP=1, */ MAJORITY=2, MEAN, MEDIAN };
+
+  Link_array<Stem> stems_;
   /// the slope of the beam in posns / point (dimension)   
-  Real slope;
+  Real slope_f_;
+  /// the slope as solved; not quantised or damped
+  Real solved_slope_f_;
 
   /// position of leftmost end of beam  
-  Real left_pos;
-   
+  Real left_y_;
+
+  /** should beam pos / slope be quantised? 0: no, 1: yes, 2: traditional
+      JUNKME.
+   */
+  Quantisation quantisation_;
+  
+  /// maximum number of beams (for opening-up of beam-spacing)
+  int multiple_i_;
 
-  /* *************** */
-  DECLARE_MY_RUNTIME_TYPEINFO;
+  Array<Stem_info> sinfo_;
+  
   Beam();
-  void add (Stem*);
+  void add_stem (Stem*);
+  Stem_info get_stem_info (Stem*);
 
   void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
-  void set_stemlens();
-  SCORE_ELEM_CLONE(Beam);
-protected:
-  virtual Interval do_width() const;    
-  virtual Offset center() const;
-  virtual void set_default_dir();
-  virtual void do_pre_processing();
-  virtual void do_post_processing();
-  virtual void do_substitute_dependent (Score_elem*, Score_elem*);
+  void set_stemlens ();
+  VIRTUAL_COPY_CONS(Score_element);
 
+protected:
+  virtual Interval do_width () const;    
+  Offset center () const;
+  void set_default_dir ();
+  void set_steminfo ();
+  virtual void do_pre_processing ();
+  virtual void do_post_processing ();
+  virtual void do_substitute_element_pointer (Score_element*, Score_element*);
   virtual void do_print() const;
-
-private:
-  Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
-  void solve_slope();
-  Molecule*brew_molecule_p() const;
+  virtual void quantise_left_y (bool extend_b);
+  virtual Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
+  virtual void calculate_slope ();
+  virtual Real check_stemlengths_f (bool set_b);
+  virtual void solve_slope ();
+  virtual void quantise_dy ();
+  virtual Molecule*do_brew_molecule_p () const;
 };
 
 #endif // BEAM_HH