/*
beam.hh -- part of GNU LilyPond
- (c) 1996--1999 Han-Wen Nienhuys
+ (c) 1996--2000 Han-Wen Nienhuys
*/
#ifndef BEAM_HH
#define BEAM_HH
#include "lily-proto.hh"
-#include "directional-spanner.hh"
+#include "spanner.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 (urg?)
-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
+ elt_properties:
+ y-position: real (position of left edge)
+ height: real (dy)
+ damping: amount of beam slope damping. (int)
+ should beam slope be damped? 0: no, 1: yes, 100000: horizontal beams
*/
-class Beam : public Directional_spanner
+class Beam : public Spanner
{
public:
+ static SCM brew_molecule (SCM);
+
int stem_count () const;
Stem* stem (int) const;
Stem* first_visible_stem () const;
Stem* last_visible_stem () const;
- /**
- the slope of the beam in dy/dx
- */
- Real dydx_f_;
-
- /// position of leftmost end of beam
- Real left_y_;
-
- Beam ();
+ Beam (SCM);
void add_stem (Stem*);
void set_grouping (Rhythmic_grouping def, Rhythmic_grouping current);
void set_beaming (Beaming_info_list *);
int get_multiplicity () const;
-protected:
+public:
- virtual void do_pre_processing ();
- virtual void do_post_processing ();
- virtual Molecule*do_brew_molecule_p () const;
+ SCM member_before_line_breaking ();
+ static SCM before_line_breaking (SCM);
+ SCM member_after_line_breaking ();
+ static SCM after_line_breaking (SCM);
+ SCM member_brew_molecule () const;
Molecule stem_beams (Stem *here, Stem *next, Stem *prev) const;
private:
- Direction calc_default_dir () const;
+ Direction get_default_dir () const;
void set_stem_directions ();
void auto_knees ();
bool auto_knee (String gap_str, bool interstaff_b);
void set_stem_shorten ();
- void calc_position_and_height (Real* y, Real* dy) const;
+ void calc_default_position_and_height (Real* y, Real* dy) const;
bool suspect_slope_b (Real y, Real dy) const;
Real calc_slope_damping_f (Real dy) const;
Real calc_stem_y_f (Stem* s, Real y, Real dy) const;
Real quantise_dy_f (Real dy) const;
Real quantise_y_f (Real y, Real dy, int quant_dir);
int forced_stem_count () const;
-
};
#endif // BEAM_HH