2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2011 Mike Solomon <mike@apollinemike.com>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 #include "engraver.hh"
23 #include "note-head.hh"
24 #include "pointer-group-interface.hh"
26 class Beam_collision_engraver : public Engraver
29 vector<Grob *> active_beams_;
30 vector<Grob *> signaled_beams_;
31 vector<Grob *> end_beams_;
32 vector<Grob *> covered_grobs_;
33 vector<Grob *> covered_interior_grobs_;
35 DECLARE_ACKNOWLEDGER (note_head);
36 DECLARE_ACKNOWLEDGER (accidental);
37 DECLARE_ACKNOWLEDGER (clef);
38 DECLARE_ACKNOWLEDGER (key_signature);
39 DECLARE_ACKNOWLEDGER (time_signature);
40 DECLARE_ACKNOWLEDGER (beam);
41 DECLARE_END_ACKNOWLEDGER (beam);
42 void stop_translation_timestep ();
44 TRANSLATOR_DECLARATIONS (Beam_collision_engraver);
48 Beam_collision_engraver::stop_translation_timestep ()
50 for (vsize i = 0; i < covered_interior_grobs_.size (); i++)
51 for (vsize j = 0; j < active_beams_.size (); j++)
52 Pointer_group_interface::add_grob (active_beams_[j], ly_symbol2scm ("covered-grobs"), covered_interior_grobs_[i]);
54 covered_interior_grobs_.clear ();
56 for (vsize i = 0; i < active_beams_.size (); i++)
57 for (vsize j = 0; j < signaled_beams_.size (); j++)
58 if (active_beams_[i] == signaled_beams_[j])
60 signaled_beams_.erase (signaled_beams_.begin () + j);
66 in auto beaming, end beams are signaled with their beams at a later timestep.
67 we need to scrub these.
69 for (vsize i = 0; i < end_beams_.size (); i++)
70 for (vsize j = 0; j < signaled_beams_.size (); j++)
71 if (end_beams_[i] == signaled_beams_[j])
73 signaled_beams_.erase (signaled_beams_.begin () + j);
77 vsize orig_size = active_beams_.size ();
79 for (vsize i=0; i < signaled_beams_.size (); i++)
80 active_beams_.push_back (signaled_beams_[i]);
82 for (vsize i = 0; i < covered_grobs_.size (); i++)
83 for (vsize j = 0; j < active_beams_.size (); j++)
86 if (Grob *stem = unsmob_grob (covered_grobs_[i]->get_object ("stem")))
87 if (Grob *beam = unsmob_grob (stem->get_object ("beam")))
88 if (beam == active_beams_.at (j))
91 Pointer_group_interface::add_grob (active_beams_.at (j), ly_symbol2scm ("covered-grobs"), covered_grobs_[i]);
94 covered_grobs_.clear ();
96 for (vsize i = 0; i < signaled_beams_.size (); i++)
97 for (vsize j = 0; j < orig_size; j++)
98 Pointer_group_interface::add_grob (active_beams_[j], ly_symbol2scm ("covered-grobs"), signaled_beams_[i]);
100 signaled_beams_.clear ();
102 for (vsize i = 0; i < end_beams_.size (); i++)
103 for (vsize j = 0; j < active_beams_.size (); j++)
104 if (end_beams_[i] == active_beams_[j])
106 active_beams_.erase (active_beams_.begin () + j);
113 Beam_collision_engraver::Beam_collision_engraver () {}
116 Beam_collision_engraver::acknowledge_note_head (Grob_info i)
118 covered_grobs_.push_back (i.grob ());
122 Beam_collision_engraver::acknowledge_accidental (Grob_info i)
124 covered_grobs_.push_back (i.grob ());
128 Beam_collision_engraver::acknowledge_clef (Grob_info i)
130 covered_interior_grobs_.push_back (i.grob ());
134 Beam_collision_engraver::acknowledge_key_signature (Grob_info i)
136 covered_interior_grobs_.push_back (i.grob ());
140 Beam_collision_engraver::acknowledge_time_signature (Grob_info i)
142 covered_interior_grobs_.push_back (i.grob ());
146 Beam_collision_engraver::acknowledge_beam (Grob_info i)
148 signaled_beams_.push_back (i.grob ());
152 Beam_collision_engraver::acknowledge_end_beam (Grob_info i)
154 end_beams_.push_back (i.grob ());
157 #include "translator.icc"
159 ADD_ACKNOWLEDGER (Beam_collision_engraver, note_head);
160 ADD_ACKNOWLEDGER (Beam_collision_engraver, accidental);
161 ADD_ACKNOWLEDGER (Beam_collision_engraver, clef);
162 ADD_ACKNOWLEDGER (Beam_collision_engraver, key_signature);
163 ADD_ACKNOWLEDGER (Beam_collision_engraver, time_signature);
164 ADD_ACKNOWLEDGER (Beam_collision_engraver, beam);
165 ADD_END_ACKNOWLEDGER (Beam_collision_engraver, beam);
167 ADD_TRANSLATOR (Beam_collision_engraver,
169 "Help beams avoid colliding with notes and clefs in other voices.",