patch::: 1.5.40.jcn1

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

diff --git a/lily/include/beam.hh b/lily/include/beam.hh
index a85858bad82c9c62d78ca0b0056c2778c9a61118..c0c7c2893333ce6a871bcfab4913beda7991ccb4 100644 (file)
--- a/lily/include/beam.hh
+++ b/lily/include/beam.hh
@@ -1,51 +1,55 @@
 /*
-  beam.hh -- part of LilyPond
+  beam.hh -- part of GNU LilyPond
 
-  (c) 1996,97 Han-Wen Nienhuys
+  (c) 1996--2002 Han-Wen Nienhuys
 */
 
 #ifndef BEAM_HH
 #define BEAM_HH
-#include "proto.hh"
-#include "directional-spanner.hh"
-#include "plist.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 */
-struct Beam:  public Directional_spanner {
-    PointerList<Stem*> stems;
-    /// the slope of the beam in posns / point (dimension)   
-    Real slope;
-
-    /// position of leftmost end of beam  
-    Real left_pos;
-   
-
-    /* *************** */
-NAME_MEMBERS(Beam);
-    
-    virtual Interval do_width()const;    
-    Offset center() const;
-    Spanner *do_break_at(PCol *,  PCol *) const;
-    Beam();
-    void add(Stem*);
-    
-
-    void set_default_dir();
-    void do_pre_processing();
-    void do_post_processing();
-
-    void do_print() const;
-    void set_grouping(Rhythmic_grouping def, Rhythmic_grouping current);
-    void set_stemlens();
-    ~Beam();
+
+#include "lily-proto.hh"
+#include "lily-guile.hh"
+
+
+
+class Beam
+{
+public:
+  static int visible_stem_count (Grob*);
+  static Item* first_visible_stem (Grob*);
+  static Item* last_visible_stem (Grob*);
+  static bool has_interface (Grob*);
+  DECLARE_SCHEME_CALLBACK (rest_collision_callback, (SCM element, SCM axis));
+  Beam (SCM);
+  static void add_stem (Grob*,Grob*);
+  static void set_beaming (Grob*,Beaming_info_list *);
+  static void set_stemlens (Grob*);
+  static int get_multiplicity (Grob*me);
+  DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
+  DECLARE_SCHEME_CALLBACK (before_line_breaking, (SCM ));
+  DECLARE_SCHEME_CALLBACK (after_line_breaking, (SCM ));
+  DECLARE_SCHEME_CALLBACK (end_after_line_breaking, (SCM));
+
+  /* position callbacks */
+  DECLARE_SCHEME_CALLBACK (least_squares, (SCM));
+  DECLARE_SCHEME_CALLBACK (check_concave, (SCM));
+  DECLARE_SCHEME_CALLBACK (slope_damping, (SCM));
+  DECLARE_SCHEME_CALLBACK (quantise_position, (SCM));
+
+  static Molecule stem_beams (Grob*,Item *here, Item *next, Item *prev,
+                             Real dydx);
 
 private:
-    Molecule stem_beams(Stem *here, Stem *next, Stem *prev)const;
-    void solve_slope();
-    Molecule*brew_molecule_p()const;
+  static Direction get_default_dir (Grob*);
+  static void set_stem_directions (Grob*);
+  static void consider_auto_knees (Grob*);
+  static void set_stem_shorten (Grob*);
+  static Real calc_stem_y_f (Grob*, Item* s, Interval pos);
+  static Real check_stem_length_f (Grob*, Interval pos);
+  static void set_stem_lengths (Grob*);
+  static Interval quantise_interval (Grob*, Interval pos, Direction quant_dir);
+  static int forced_stem_count (Grob*);
 };
 
-#endif // BEAM_HH
+#endif /* BEAM_HH */