/*
beam.hh -- part of GNU LilyPond
- (c) 1996--1999 Han-Wen Nienhuys
+ (c) 1996--2002 Han-Wen Nienhuys
*/
#ifndef BEAM_HH
#define BEAM_HH
#include "lily-proto.hh"
-#include "directional-spanner.hh"
+#include "lily-guile.hh"
+#include "stem-info.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
-
-elt property:
-
-damping: amount of beam slope damping. (int)
-
-should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
-
-slope_quantisation: 'none, 'normal or 'traditional
-
-*/
-class Beam : public Directional_spanner {
+class Beam
+{
public:
-
- int stem_count () const;
- Stem* stem (int) const;
- Stem* stem_top () const;
- int visible_stem_count () const;
- Stem* first_visible_stem () const;
- Stem* last_visible_stem () const;
-
- /**
- the slope of the beam in (staffpositions) per (X-dimension, in PT).
- UGH. standardise this for once and for all.
- */
- Real slope_f_;
-
- /// position of leftmost end of beam
- Real left_y_;
-
- /**
- */
-
- Beam ();
- void add_stem (Stem*);
-
- void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
- void set_beaming (Beaming_info_list *);
- void set_stemlens ();
- VIRTUAL_COPY_CONS(Score_element);
- int multiplicity_i () const;
-
-protected:
- Offset center () const;
- Direction get_default_dir () const;
- void set_direction (Direction);
- void set_stem_shorten ();
- bool auto_knee (SCM gap, bool interstaff_b);
- bool auto_knees ();
+ static int visible_stem_count (Grob*);
+ static Item* first_visible_stem (Grob*);
+ static Item* last_visible_stem (Grob*);
+ static bool has_interface (Grob*);
+ DECLARE_SCHEME_CALLBACK (rest_collision_callback, (SCM element, SCM axis));
+ Beam (SCM);
+ static void add_stem (Grob*,Grob*);
+ static void set_beaming (Grob*,Beaming_info_list *);
+ static void set_stemlens (Grob*);
+ static int get_multiplicity (Grob*me);
+ static Real get_interbeam (Grob*me);
+ DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
+ DECLARE_SCHEME_CALLBACK (before_line_breaking, (SCM ));
+ DECLARE_SCHEME_CALLBACK (after_line_breaking, (SCM ));
+ DECLARE_SCHEME_CALLBACK (end_after_line_breaking, (SCM));
+
+ /* position callbacks */
+ DECLARE_SCHEME_CALLBACK (least_squares, (SCM));
+ DECLARE_SCHEME_CALLBACK (check_concave, (SCM));
+ DECLARE_SCHEME_CALLBACK (slope_damping, (SCM));
+ DECLARE_SCHEME_CALLBACK (quanting, (SCM));
+ static Real score_slopes_dy (Grob*, Real,Real,Real,Real);
+ static Real score_stem_lengths (Link_array<Grob>,
+ Array<Stem_info>,
+ Array<Real>, Array<Real>, Array<int>,
+ Grob*,Real , Real);
+ static Real score_forbidden_quants (Grob*, Real, Real,
+ Real, Real, Real, Real,
+ int);
- virtual void do_pre_processing ();
- virtual void do_post_processing ();
- virtual void do_print() const;
- virtual Molecule*do_brew_molecule_p () const;
-
- Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
+
+ static Molecule stem_beams (Grob*,Item *here, Item *next, Item *prev,
+ Real dydx);
private:
- void calculate_slope ();
- Real check_stemlengths_f (bool set_b);
- void solve_slope ();
-
- void quantise_left_y (bool extend_b);
- void quantise_dy ();
-
+ static Direction get_default_dir (Grob*);
+ static void set_stem_directions (Grob*);
+ static void consider_auto_knees (Grob*);
+ static void set_stem_shorten (Grob*);
+ static Real calc_stem_y (Grob*, Grob* s, Interval pos);
+ static void set_stem_lengths (Grob*);
+ static int forced_stem_count (Grob*);
};
-#endif // BEAM_HH
+#endif /* BEAM_HH */