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 Beam adjusts the stems its owns to
14 make sure that they reach the beam and that point in the correct
16 class Beam: public Directional_spanner {
18 enum Pos { NONE, SIT = 1, STRADDLE = 2, HANG = 4, INTER = 8 };
20 Link_array<Stem> stems;
21 /// the slope of the beam in posns / point (dimension)
24 /// position of leftmost end of beam
29 DECLARE_MY_RUNTIME_TYPEINFO;
33 void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
35 SCORE_ELEM_CLONE (Beam);
38 virtual Interval do_width () const;
39 Offset center () const;
40 void set_default_dir ();
41 virtual void do_pre_processing ();
42 virtual void do_post_processing ();
43 virtual void do_substitute_dependent (Score_elem*, Score_elem*);
45 virtual void do_print() const;
47 virtual void quantise_left_y (Beam::Pos pos, bool extend_b);
48 virtual Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
49 virtual void solve_slope ();
50 virtual void quantise_yspan ();
51 virtual Molecule*brew_molecule_p () const;