2 beam.hh -- part of GNU LilyPond
4 (c) 1996--1999 Han-Wen Nienhuys
10 #include "lily-proto.hh"
11 #include "directional-spanner.hh"
12 #include "stem-info.hh"
15 /** a beam connects multiple stems.
17 Beam adjusts the stems its owns to make sure that they reach the
18 beam and that point in the correct direction
22 damping: amount of beam slope damping. (int)
24 should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
28 class Beam : public Directional_spanner {
31 The beams should be prevented to conflict with the stafflines,
32 especially at small slopes.
34 enum Quantisation { NONE, NORMAL, TRADITIONAL, TEST };
35 enum Dir_algorithm { /* DOWN=-1, UP=1, */ MAJORITY=2, MEAN, MEDIAN };
37 Link_array<Stem> stems_;
38 /// the slope of the beam in posns / point (dimension)
41 /// position of leftmost end of beam
44 /** should beam pos / slope be quantised? 0: no, 1: yes, 2: traditional
47 Quantisation quantisation_;
49 /// maximum number of beams (for opening-up of beam-spacing)
52 Array<Stem_info> sinfo_;
55 void add_stem (Stem*);
56 Stem_info get_stem_info (Stem*);
58 void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
60 VIRTUAL_COPY_CONS(Score_element);
63 virtual Interval do_width () const;
64 Offset center () const;
65 Direction get_default_dir () const;
66 void set_direction (Direction);
69 virtual void do_pre_processing ();
70 virtual void do_post_processing ();
71 virtual void do_substitute_element_pointer (Score_element*, Score_element*);
72 virtual void do_print() const;
73 virtual void quantise_left_y (bool extend_b);
74 virtual Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
75 virtual void calculate_slope ();
76 virtual Real check_stemlengths_f (bool set_b);
77 virtual void solve_slope ();
78 virtual void quantise_dy ();
79 virtual Molecule*do_brew_molecule_p () const;