2 beam.hh -- part of GNU LilyPond
4 (c) 1996,97 Han-Wen Nienhuys
9 #include "lily-proto.hh"
10 #include "directional-spanner.hh"
13 /** a beam connects multiple stems.
15 Beam adjusts the stems its owns to make sure that they reach the
16 beam and that point in the correct direction */
17 class Beam: public Directional_spanner {
20 The beams should be prevented to conflict with the stafflines,
21 especially at small slopes.
23 enum Quantisation { NONE, NORMAL, TRADITIONAL, TEST };
25 Link_array<Stem> stems_;
26 /// the slope of the beam in posns / point (dimension)
29 /// position of leftmost end of beam
31 /// should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
33 /// should beam pos / slope be quantised? 0: no, 1: yes, 2: traditional
34 Quantisation quantisation_;
35 /// maximum number of beams (for opening-up of beam-spacing)
39 DECLARE_MY_RUNTIME_TYPEINFO;
43 void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
45 SCORE_ELEM_CLONE (Beam);
48 virtual Interval do_width () const;
49 Offset center () const;
50 void set_default_dir ();
51 virtual void do_pre_processing ();
52 virtual void do_post_processing ();
53 virtual void do_substitute_dependent (Score_elem*, Score_elem*);
55 virtual void do_print() const;
57 virtual void quantise_left_y (bool extend_b);
58 virtual Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
59 virtual void solve_slope ();
60 virtual void quantise_dy ();
61 virtual Molecule*brew_molecule_p () const;