2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
5 Jan Nieuwenhuizen <janneke@gnu.org>
7 LilyPond is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 LilyPond is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
24 #include "grob-interface.hh"
25 #include "std-vector.hh"
26 #include "lily-proto.hh"
27 #include "stem-info.hh"
36 struct Beam_stem_segment
51 bool operator <(Beam_stem_segment const &a, Beam_stem_segment const &b);
56 static int normal_stem_count (Grob *);
57 static Grob *first_normal_stem (Grob *);
58 static Grob *last_normal_stem (Grob *);
59 DECLARE_GROB_INTERFACE();
60 static void add_stem (Grob *, Grob *);
61 static bool is_cross_staff (Grob *);
62 static bool is_knee (Grob *);
63 static void set_beaming (Grob *, Beaming_pattern const *);
64 static void set_stemlens (Grob *);
65 static int get_beam_count (Grob *me);
66 static Real get_beam_translation (Grob *me);
67 static Real get_beam_thickness (Grob *me);
68 static void connect_beams (Grob *me);
69 static vector<Beam_segment> get_beam_segments (Grob *me_grob, Grob **common);
70 static Interval no_visible_stem_positions (Grob *me, Interval default_value);
72 DECLARE_SCHEME_CALLBACK (rest_collision_callback, (SCM element, SCM prev_off));
73 DECLARE_SCHEME_CALLBACK (print, (SCM));
74 DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
75 DECLARE_SCHEME_CALLBACK (calc_stem_shorten, (SCM));
76 DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
77 DECLARE_SCHEME_CALLBACK (calc_positions, (SCM));
78 DECLARE_SCHEME_CALLBACK (calc_least_squares_positions, (SCM, SCM));
79 DECLARE_SCHEME_CALLBACK (calc_normal_stems, (SCM));
80 DECLARE_SCHEME_CALLBACK (calc_concaveness, (SCM));
81 DECLARE_SCHEME_CALLBACK (set_stem_lengths, (SCM));
82 DECLARE_SCHEME_CALLBACK (calc_cross_staff, (SCM));
84 /* position callbacks */
85 DECLARE_SCHEME_CALLBACK (shift_region_to_valid, (SCM, SCM));
86 DECLARE_SCHEME_CALLBACK (slope_damping, (SCM, SCM));
87 DECLARE_SCHEME_CALLBACK (quanting, (SCM, SCM));
89 static int get_direction_beam_count (Grob *me, Direction d);
92 friend class Beam_scoring_problem;
94 static Direction get_default_dir (Grob *);
95 static void set_stem_directions (Grob *, Direction);
96 static void consider_auto_knees (Grob *);
97 static void set_stem_shorten (Grob *);
98 static int forced_stem_count (Grob *);
99 static Real calc_stem_y (Grob *, Grob *s, Grob **c,
100 Real, Real, Direction,
101 Drul_array<Real> pos, bool french);