/*
beam.hh -- part of GNU LilyPond
- (c) 1996--2000 Han-Wen Nienhuys
+ source file of the LilyPond music typesetter
+
+ (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
#ifndef BEAM_HH
#include "lily-proto.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 (urg?)
-
- 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
-
-
- molecule-callback --
-
- beam-thickness -- weight of beams, in staffspace
-
- beam-space-function -- function of type multiplicity -> real (in staffspace)
-
- default-neutral-direction -- which direction to choose if we're in
- the middle of the staff
-
- after-line-breaking-callback --
-
- damping -- damping factor (real).
-
- outer-stem-length-limit -- catch suspect beam slopes, set slope to zero if
- outer stem is lengthened more than this (in staffspace)
-
- slope-limit -- set slope to zero if slope is running away steeper than this.
-
-*/
class Beam
{
public:
- static int visible_stem_count (Score_element*);
- static Item* first_visible_stem (Score_element*);
- static Item* last_visible_stem (Score_element*);
- static bool has_interface (Score_element*);
- static void set_interface (Score_element*);
- static Real rest_collision_callback (Score_element *,Axis);
+ static int visible_stem_count (Grob*);
+ static Grob* first_visible_stem (Grob*);
+ static Grob* 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 (Score_element*,Score_element*);
- static void set_beaming (Score_element*,Beaming_info_list *);
- static void set_stemlens (Score_element*);
- static int get_multiplicity (Score_element*me);
- static SCM brew_molecule (SCM);
- static SCM before_line_breaking (SCM);
- static SCM after_line_breaking (SCM);
- static Molecule stem_beams (Score_element*,Item *here, Item *next, Item *prev);
-
+ static void add_stem (Grob*,Grob*);
+ static bool knee_b (Grob*);
+ static void set_beaming (Grob*,Beaming_info_list *);
+ static void set_stemlens (Grob*);
+ static int get_beam_count (Grob*me);
+ static void position_beam (Grob* me);
+ static Real get_beam_translation (Grob*me);
+ static Real get_thickness (Grob*me);
+
+ static void connect_beams (Grob*me);
+ DECLARE_SCHEME_CALLBACK (space_function, (SCM, SCM));
+ DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM));
+ DECLARE_SCHEME_CALLBACK (before_line_breaking, (SCM));
+ DECLARE_SCHEME_CALLBACK (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 (shift_region_to_valid, (SCM));
+ DECLARE_SCHEME_CALLBACK (quanting, (SCM));
+ static Real score_slopes_dy (Real, Real, Real, Real, Real, bool);
+
+ static Real score_stem_lengths (Link_array<Grob> const &stems,
+ Array<Stem_info> const &stem_infos,
+ Array<Real> const &base_stem_ys,
+ Array<Real> const &stem_xs,
+ Real xl, Real xr,
+ bool knee,
+ Real yl, Real yr);
+ static Real score_forbidden_quants (Real, Real,
+ Real, Real, Real, Real,
+ int, Direction, Direction);
+
+
+ static int get_direction_beam_count (Grob *me, Direction d);
private:
- static Direction get_default_dir (Score_element*);
- static void set_stem_directions (Score_element*);
- static void auto_knees (Score_element*);
- static bool auto_knee (Score_element*,String gap_str, bool interstaff_b);
- static void set_stem_shorten (Score_element*);
- static void calc_default_position_and_height (Score_element*,Real* y, Real* dy);
- static bool suspect_slope_b (Score_element*, Real y, Real dy);
- static Real calc_slope_damping_f (Score_element*, Real dy);
- static Real calc_stem_y_f (Score_element*, Item* s, Real y, Real dy);
- static Real check_stem_length_f (Score_element*, Real y, Real dy);
- static void set_stem_length (Score_element*, Real y, Real dy);
- static Real quantise_dy_f (Score_element*, Real dy);
- static Real quantise_y_f (Score_element*, Real y, Real dy, int quant_dir);
- static int forced_stem_count (Score_element*);
+ static Direction get_default_dir (Grob*);
+ static void set_stem_directions (Grob*, Direction );
+ static void consider_auto_knees (Grob*);
+ static void set_stem_shorten (Grob*);
+ static Real calc_stem_y (Grob*, Grob* s, Grob**c,
+ Real, Real,
+ Drul_array<Real> pos, bool french);
+ static void set_stem_lengths (Grob*);
+ static int forced_stem_count (Grob*);
};
-#endif // BEAM_HH
+const int REGION_SIZE = 2;
+
+#define DEBUG_QUANTING 1
+
+#endif /* BEAM_HH */
projects / lilypond.git / blobdiff