/*
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 "stem-info.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 */
+/** 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 {
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();
- SCORE_ELEM_CLONE(Beam);
+ /**
+ 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_f_;
+ /// the slope as solved; not quantised or damped
+ Real solved_slope_f_;
+
+ /// position of leftmost end of beam
+ Real left_y_;
+ /// should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
+ int damping_i_;
+ /// should beam pos / slope be quantised? 0: no, 1: yes, 2: traditional
+ Quantisation quantisation_;
+ /// maximum number of beams (for opening-up of beam-spacing)
+ int multiple_i_;
+
+ /// vertical align distance between staffs
+ Drul_array<Real> vertical_align_drul_;
+
+ Array<Stem_info> sinfo_;
+
+ Beam();
+ void add_stem (Stem*);
+
+ void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
+ void set_stemlens ();
+ VIRTUAL_COPY_CONS(Score_element);
+
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*);
-
- 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 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_dependent (Score_element*, Score_element*);
+
+ virtual void do_print() 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