X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fbeam.hh;h=3b61792aebfde302494e8d9df480313e69c0a59d;hb=e0ab7a37fa31290d42c9e5534ac5480c7d9f4a8f;hp=d1e28ee4f683b36674f128a5fa15b7ba59812a68;hpb=0d2593e4ef1f3d1eb6994223f1de8f6c8fbcd066;p=lilypond.git

diff --git a/lily/include/beam.hh b/lily/include/beam.hh
index d1e28ee4f6..3b61792aeb 100644
--- a/lily/include/beam.hh
+++ b/lily/include/beam.hh
@@ -1,52 +1,133 @@
 /*
   beam.hh -- part of GNU LilyPond
 
-  (c) 1996,97 Han-Wen Nienhuys
+  source file of the LilyPond music typesetter
+
+  (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
 #ifndef BEAM_HH
 #define BEAM_HH
+
+#include "grob-interface.hh"
+#include "std-vector.hh"
 #include "lily-proto.hh"
-#include "directional-spanner.hh"
-#include "plist.hh"
+#include "stem-info.hh"
+
+/*
+  TODO: move quanting in separate file.
+*/
+struct Beam_quant_parameters
+{
+  Real INTER_QUANT_PENALTY;
+  Real SECONDARY_BEAM_DEMERIT;
+  Real STEM_LENGTH_DEMERIT_FACTOR;
+  Real REGION_SIZE;
 
-/** 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 {
+  /*
+    threshold to combat rounding errors.
+  */
+  Real BEAM_EPS;
+
+  // possibly ridiculous, but too short stems just won't do
+  Real STEM_LENGTH_LIMIT_PENALTY;
+  Real DAMPING_DIRECTION_PENALTY;
+  Real MUSICAL_DIRECTION_FACTOR;
+  Real HINT_DIRECTION_PENALTY;
+  Real IDEAL_SLOPE_FACTOR;
+  Real ROUND_TO_ZERO_SLOPE;
+
+  void fill (Grob *him);
+};
+
+struct Beam_segment
+{
+  int vertical_count_;
+  Interval horizontal_; 
+  Beam_segment ();
+};
+
+struct Beam_stem_segment 
+{
+  Beam_stem_segment ();
+
+  Grob *stem_;
+  Real width_;
+  Real stem_x_;
+  int rank_;
+  vsize stem_index_;
+  bool gapped_;
+  Direction dir_;
+  int max_connect_;
+  
+};
+
+
+bool operator <(Beam_stem_segment const &a, Beam_stem_segment const &b);
+
+class Beam
+{
 public:
-    Link_array<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();
-    void add(Stem*);
-    
-
-    void set_grouping(Rhythmic_grouping def, Rhythmic_grouping current);
-    void set_stemlens();
-    SPANNER_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_dependency(Score_elem*, Score_elem*);
-
-    virtual void do_print() const;
+  static int normal_stem_count (Grob *);
+  static Grob *first_normal_stem (Grob *);
+  static Grob *last_normal_stem (Grob *);
+  DECLARE_GROB_INTERFACE();
+  static void add_stem (Grob *, Grob *);
+  static bool is_cross_staff (Grob *);
+  static bool is_knee (Grob *);
+  static void set_beaming (Grob *, Beaming_pattern const *);
+  static void set_stemlens (Grob *);
+  static int get_beam_count (Grob *me);
+  static Real get_beam_translation (Grob *me);
+  static Real get_thickness (Grob *me);
+  static void connect_beams (Grob *me);
+  static vector<Beam_segment> get_beam_segments (Grob *me_grob, Grob **common); 
+  static Interval no_visible_stem_positions (Grob *me, Interval default_value);
+  
+  DECLARE_SCHEME_CALLBACK (rest_collision_callback, (SCM element, SCM prev_off));
+  DECLARE_SCHEME_CALLBACK (print, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_stem_shorten, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_positions, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_least_squares_positions, (SCM, SCM));
+  DECLARE_SCHEME_CALLBACK (calc_normal_stems, (SCM));  
+  DECLARE_SCHEME_CALLBACK (calc_concaveness, (SCM));
+  DECLARE_SCHEME_CALLBACK (set_stem_lengths, (SCM));
+  DECLARE_SCHEME_CALLBACK (calc_cross_staff, (SCM));
+
+  /* position callbacks */
+  DECLARE_SCHEME_CALLBACK (shift_region_to_valid, (SCM, SCM));
+  DECLARE_SCHEME_CALLBACK (slope_damping, (SCM, SCM));
+  DECLARE_SCHEME_CALLBACK (quanting, (SCM, SCM));
+  
+static Real score_slopes_dy (Real, Real, Real, Real, Real, bool, Beam_quant_parameters const *);
 
+  static Real score_stem_lengths (vector<Grob*> const &stems,
+				  vector<Stem_info> const &stem_infos,
+				  vector<Real> const &base_stem_ys,
+				  vector<Real> const &stem_xs,
+				  Real xl, Real xr,
+				  bool knee,
+				  Real yl, Real yr, Beam_quant_parameters const *);
+  static Real score_forbidden_quants (Real, Real,
+				      Real, Real, Real, Real,
+				      Drul_array<int>, Direction, Direction,
+				      Beam_quant_parameters const *);
+
+  static int get_direction_beam_count (Grob *me, Direction d);
 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 *, Direction);
+  static void consider_auto_knees (Grob *);
+  static void set_stem_shorten (Grob *);
+  static Real calc_stem_y (Grob *, Grob *s, Grob **c,
+			   Real, Real, Direction,
+			   Drul_array<Real> pos, bool french);
+  static int forced_stem_count (Grob *);
 };
 
-#endif // BEAM_HH
+
+#endif /* BEAM_HH */