source file of the GNU LilyPond music typesetter
- (c) 1999--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1999--2004 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "beaming.hh"
-#include "musical-request.hh"
+#include "event.hh"
#include "beam.hh"
#include "stem.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "engraver-group-engraver.hh"
-#include "bar.hh"
+#include "bar-line.hh"
#include "rest.hh"
#include "engraver.hh"
#include "item.hh"
#include "spanner.hh"
+#include "duration.hh"
/*
TODO: figure what to do in grace?
*/
class Auto_beam_engraver : public Engraver
{
-public:
- Auto_beam_engraver ();
- VIRTUAL_COPY_CONS (Translator);
-
+ TRANSLATOR_DECLARATIONS(Auto_beam_engraver);
protected:
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
+ virtual void process_music ();
virtual void finalize ();
virtual void acknowledge_grob (Grob_info);
- virtual void create_grobs ();
+ virtual void process_acknowledged_grobs ();
private:
bool test_moment (Direction, Moment);
void consider_begin (Moment);
void consider_end (Moment);
- Spanner* create_beam_p ();
+ Spanner* create_beam ();
void begin_beam ();
void end_beam ();
void junk_beam ();
shortest_mom is the shortest note in the beam.
*/
Moment shortest_mom_;
- Spanner *finished_beam_p_;
- Link_array<Item>* stem_l_arr_p_;
+ Spanner *finished_beam_;
+ Link_array<Item>* stems_;
- int count_i_;
+ int count_;
Moment last_add_mom_;
-
/*
Projected ending of the beam we're working on.
*/
Moment extend_mom_;
Moment beam_start_moment_;
Moment beam_start_location_;
+
+ bool subdivide_beams_;
+ Moment beat_length_;
// We act as if beam were created, and start a grouping anyway.
- Beaming_info_list*grouping_p_;
- Beaming_info_list*finished_grouping_p_;
+ Beaming_info_list*grouping_;
+ SCM beam_settings_ ; // ugh. should protect ?
+
+ Beaming_info_list*finished_grouping_;
};
-ADD_THIS_TRANSLATOR (Auto_beam_engraver);
+void
+Auto_beam_engraver::process_music ()
+{
+ if (gh_string_p (get_property ("whichBar")))
+ {
+ consider_end (shortest_mom_);
+ junk_beam ();
+ }
+}
+
Auto_beam_engraver::Auto_beam_engraver ()
{
- count_i_ = 0;
- stem_l_arr_p_ = 0;
- shortest_mom_ = Moment (1, 8);
- finished_beam_p_ = 0;
- finished_grouping_p_ = 0;
- grouping_p_ = 0;
+ count_ = 0;
+ stems_ = 0;
+ shortest_mom_ = Moment (Rational (1, 8));
+ finished_beam_ = 0;
+ finished_grouping_ = 0;
+ grouping_ = 0;
+ beam_settings_ = SCM_EOL;
}
/*
bool
Auto_beam_engraver::test_moment (Direction dir, Moment test_mom)
{
- SCM wild = gh_list (ly_symbol2scm ("*"), ly_symbol2scm ("*"), SCM_UNDEFINED);
+ Moment now = now_mom();
+ if (dir == START
+ && now.grace_part_)
+ {
+ return false;
+ }
+
+ SCM wild = scm_list_n (ly_symbol2scm ("*"), ly_symbol2scm ("*"), SCM_UNDEFINED);
SCM function;
if (dir == START)
- function = gh_list (ly_symbol2scm ("begin"), SCM_UNDEFINED);
+ function = scm_list_n (ly_symbol2scm ("begin"), SCM_UNDEFINED);
else
- function = gh_list (ly_symbol2scm ("end"), SCM_UNDEFINED);
+ function = scm_list_n (ly_symbol2scm ("end"), SCM_UNDEFINED);
- Moment one_beat = *unsmob_moment( get_property ("beatLength"));
- int num = *unsmob_moment (get_property("measureLength")) / one_beat;
- int den = one_beat.den_i ();
- SCM time = gh_list (gh_int2scm (num), gh_int2scm (den), SCM_UNDEFINED);
+ Moment one_beat = *unsmob_moment (get_property ("beatLength"));
+ int num = int ((*unsmob_moment (get_property ("measureLength")) / one_beat).main_part_);
+ int den = one_beat.den ();
+ SCM time = scm_list_n (scm_int2num (num), scm_int2num (den), SCM_UNDEFINED);
- SCM type = gh_list (gh_int2scm (test_mom.num_i ()),
- gh_int2scm (test_mom.den_i ()), SCM_UNDEFINED);
+ SCM type = scm_list_n (scm_int2num (test_mom.num ()),
+ scm_int2num (test_mom.den ()), SCM_UNDEFINED);
SCM settings = get_property ("autoBeamSettings");
/* first guess */
/* begin beam at any position
- (and fallback for end) */
+ (and fallback for end) */
Moment moment (0);
/* end beam at end of beat */
}
/* second guess: property generic time exception */
- SCM m = gh_assoc (gh_append3 (function, wild, time), settings);
+ SCM m = scm_assoc (gh_append3 (function, wild, time), settings);
- if (m != SCM_BOOL_F && unsmob_moment (gh_cdr (m)))
- moment = * unsmob_moment (gh_cdr (m));
+ if (m != SCM_BOOL_F && unsmob_moment (ly_cdr (m)))
+ moment = * unsmob_moment (ly_cdr (m));
/* third guess: property time exception, specific for duration type */
- m = gh_assoc (gh_append3 (function, type, time), settings);
- if (m != SCM_BOOL_F && unsmob_moment (gh_cdr (m)))
- moment = * unsmob_moment (gh_cdr (m));
+ m = scm_assoc (gh_append3 (function, type, time), settings);
+ if (m != SCM_BOOL_F && unsmob_moment (ly_cdr (m)))
+ moment = * unsmob_moment (ly_cdr (m));
/* fourth guess [user override]: property plain generic */
- m = gh_assoc (gh_append3 (function, wild, wild), settings);
- if (m != SCM_BOOL_F && unsmob_moment (gh_cdr (m)))
- moment = * unsmob_moment (gh_cdr (m));
+ m = scm_assoc (gh_append3 (function, wild, wild), settings);
+ if (m != SCM_BOOL_F && unsmob_moment (ly_cdr (m)))
+ moment = * unsmob_moment (ly_cdr (m));
/* fifth guess [user override]: property plain, specific for duration type */
- m = gh_assoc (gh_append3 (function, type, wild), settings);
- if (m != SCM_BOOL_F && unsmob_moment (gh_cdr (m)))
- moment = * unsmob_moment (gh_cdr (m));
+ m = scm_assoc (gh_append3 (function, type, wild), settings);
+ if (m != SCM_BOOL_F && unsmob_moment (ly_cdr (m)))
+ moment = * unsmob_moment (ly_cdr (m));
Rational r;
- if (moment)
+ if (moment.to_bool ())
{
/* Ugh? measurePosition can be negative, when \partial
We may have to fix this elsewhere (timing translator)
Moment length = * unsmob_moment (get_property ("measureLength"));
pos = length - pos;
}
- r = pos.mod_rat (moment);
+ r = pos.main_part_.mod_rat (moment.main_part_);
}
else
{
/* but ending is not */
r = 1;
}
+
return !r;
}
void
Auto_beam_engraver::consider_begin (Moment test_mom)
{
- bool off = to_boolean (get_property ("noAutoBeaming"));
- if (!stem_l_arr_p_ && ! off)
+ bool on = to_boolean (get_property ("autoBeaming"));
+ if (!stems_ && on)
{
bool b = test_moment (START, test_mom);
if (b)
void
Auto_beam_engraver::consider_end (Moment test_mom)
{
- if (stem_l_arr_p_)
+ if (stems_)
{
/* Allow already started autobeam to end:
- don't check for noAutoBeaming */
+ don't check for autoBeaming */
bool b = test_moment (STOP, test_mom);
if (b)
end_beam ();
}
Spanner*
-Auto_beam_engraver::create_beam_p ()
+Auto_beam_engraver::create_beam ()
{
- Spanner* beam_p = new Spanner (get_property ("Beam"));
- Beam::set_interface (beam_p);
-
- for (int i = 0; i < stem_l_arr_p_->size (); i++)
+ if (to_boolean (get_property ("skipTypesetting")))
+ {
+ return 0;
+ }
+
+ Spanner* beam = new Spanner (beam_settings_);
+ for (int i = 0; i < stems_->size (); i++)
{
/*
watch out for stem tremolos and abbreviation beams
*/
- if (Stem::beam_l ((*stem_l_arr_p_)[i]))
+ if (Stem::get_beam ((*stems_)[i]))
{
- scm_unprotect_object (beam_p->self_scm ());
+ scm_gc_unprotect_object (beam->self_scm ());
return 0;
}
- Beam::add_stem (beam_p,(*stem_l_arr_p_)[i]);
+ Beam::add_stem (beam, (*stems_)[i]);
}
- announce_grob (beam_p, 0);
+ announce_grob(beam, SCM_EOL);
- return beam_p;
+ return beam;
}
void
Auto_beam_engraver::begin_beam ()
{
- assert (!stem_l_arr_p_);
- stem_l_arr_p_ = new Link_array<Item>;
- assert (!grouping_p_);
- grouping_p_ = new Beaming_info_list;
+ if (stems_ || grouping_ )
+ {
+ programming_error ("already have autobeam");
+ return;
+ }
+
+ stems_ = new Link_array<Item>;
+ grouping_ = new Beaming_info_list;
+ beam_settings_ = get_property ("Beam");
+
beam_start_moment_ = now_mom ();
beam_start_location_ = *unsmob_moment (get_property ("measurePosition"));
+ subdivide_beams_ = gh_scm2bool(get_property("subdivideBeams"));
+ beat_length_ = *unsmob_moment (get_property ("beatLength"));
}
-
void
Auto_beam_engraver::junk_beam ()
{
- assert (stem_l_arr_p_);
+ if (!stems_)
+ return ;
+
+ delete stems_;
+ stems_ = 0;
+ delete grouping_;
+ grouping_ = 0;
+ beam_settings_ = SCM_EOL;
- delete stem_l_arr_p_;
- stem_l_arr_p_ = 0;
- delete grouping_p_;
- grouping_p_ = 0;
- shortest_mom_ = Moment (1, 8);
+ shortest_mom_ = Moment (Rational (1, 8));
}
void
Auto_beam_engraver::end_beam ()
{
- if (stem_l_arr_p_->size () < 2)
+ if (stems_->size () < 2)
{
junk_beam ();
}
else
{
- finished_beam_p_ = create_beam_p ();
- if (finished_beam_p_)
- finished_grouping_p_ = grouping_p_;
- delete stem_l_arr_p_;
- stem_l_arr_p_ = 0;
- grouping_p_ = 0;
- shortest_mom_ = Moment (1, 8);
+ finished_beam_ = create_beam ();
+ if (finished_beam_)
+ finished_grouping_ = grouping_;
+ delete stems_;
+ stems_ = 0;
+ grouping_ = 0;
+ beam_settings_ = SCM_EOL;
}
+
+ shortest_mom_ = Moment (Rational (1, 8));
}
void
Auto_beam_engraver::typeset_beam ()
{
- if (finished_beam_p_)
+ if (finished_beam_)
{
- finished_grouping_p_->beamify ();
- Beam::set_beaming (finished_beam_p_, finished_grouping_p_);
- typeset_grob (finished_beam_p_);
- finished_beam_p_ = 0;
+ finished_grouping_->beamify(beat_length_, subdivide_beams_);
+ Beam::set_beaming (finished_beam_, finished_grouping_);
+ typeset_grob (finished_beam_);
+ finished_beam_ = 0;
- delete finished_grouping_p_;
- finished_grouping_p_= 0;
+ delete finished_grouping_;
+ finished_grouping_= 0;
}
}
void
Auto_beam_engraver::start_translation_timestep ()
{
- count_i_ = 0;
+ count_ = 0;
/*
don't beam over skips
*/
- if (stem_l_arr_p_)
+ if (stems_)
{
Moment now = now_mom ();
if (extend_mom_ < now)
void
Auto_beam_engraver::stop_translation_timestep ()
{
-
typeset_beam ();
}
/* finished beams may be typeset */
typeset_beam ();
/* but unfinished may need another announce/acknowledge pass */
- if (stem_l_arr_p_)
+ if (stems_)
junk_beam ();
}
-bool
-Auto_beam_engraver::same_grace_state_b (Grob* e)
-{
- bool gr = e->get_grob_property ("grace") == SCM_BOOL_T;
- SCM wg =get_property ("weAreGraceContext");
- return (to_boolean (wg)) == gr;
-}
void
Auto_beam_engraver::acknowledge_grob (Grob_info info)
{
- if (!same_grace_state_b (info.elem_l_))
- return;
-
- if (stem_l_arr_p_)
+ if (stems_)
{
- if (Beam::has_interface (info.elem_l_))
+ if (Beam::has_interface (info.grob_))
{
end_beam ();
}
- else if (Bar::has_interface (info.elem_l_))
+ else if (Bar_line::has_interface (info.grob_))
{
end_beam ();
}
- else if (Rest::has_interface (info.elem_l_))
+ else if (Rest::has_interface (info.grob_))
{
end_beam ();
}
}
- if (Stem::has_interface (info.elem_l_))
+ if (Stem::has_interface (info.grob_))
{
- Item* stem_l = dynamic_cast<Item *> (info.elem_l_);
-
- Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.req_l_);
- if (!rhythmic_req)
+ Item* stem = dynamic_cast<Item *> (info.grob_);
+ Music* m = info.music_cause ();
+ if (!m->is_mus_type ("rhythmic-event"))
{
programming_error ("Stem must have rhythmic structure");
return;
/*
Don't (start) auto-beam over empty stems; skips or rests
*/
- if (!Stem::heads_i (stem_l))
+ if (!Stem::head_count (stem))
{
- if (stem_l_arr_p_)
+ if (stems_)
end_beam ();
return;
}
- if (Stem::beam_l (stem_l))
+ if (Stem::get_beam (stem))
{
- if (stem_l_arr_p_)
+ if (stems_)
junk_beam ();
return ;
}
- int durlog = unsmob_duration (rhythmic_req->get_mus_property ("duration"))->duration_log ();
+ int durlog = unsmob_duration (m->get_mus_property ("duration"))->duration_log ();
if (durlog <= 2)
{
- if (stem_l_arr_p_)
+ if (stems_)
end_beam ();
return;
}
- Moment dur = unsmob_duration (rhythmic_req->get_mus_property ("duration"))->length_mom ();
+
+ /*
+ ignore grace notes.
+ */
+ if (bool (beam_start_location_.grace_part_) != bool (now_mom ().grace_part_))
+ return ;
+
+
+ Moment dur = unsmob_duration (m->get_mus_property ("duration"))->get_length ();
/* FIXME:
This comment has been here since long:
consider_begin (shortest_mom_);
#endif
- if (!stem_l_arr_p_)
+ if (!stems_)
return;
Moment now = now_mom ();
- grouping_p_->add_stem (now - beam_start_moment_ + beam_start_location_,
+ grouping_->add_stem (now - beam_start_moment_ + beam_start_location_,
durlog - 2);
- stem_l_arr_p_->push (stem_l);
+ stems_->push (stem);
last_add_mom_ = now;
- extend_mom_ = extend_mom_ >? now + rhythmic_req->length_mom ();
+ extend_mom_ = (extend_mom_ >? now) + m->get_length ();
}
}
void
-Auto_beam_engraver::create_grobs ()
+Auto_beam_engraver::process_acknowledged_grobs ()
{
- if (!count_i_)
+ if (!count_)
{
consider_end (shortest_mom_);
consider_begin (shortest_mom_);
}
- else if (count_i_ > 1)
+ else if (count_ > 1)
{
- if (stem_l_arr_p_)
+ if (stems_)
{
Moment now = now_mom ();
if ((extend_mom_ < now)
- || ((extend_mom_ == now) && (last_add_mom_ != now )))
+ || ((extend_mom_ == now) && (last_add_mom_ != now)))
{
end_beam ();
}
- else if (!stem_l_arr_p_->size ())
+ else if (!stems_->size ())
{
junk_beam ();
}
}
}
-
- /*
- count_i_++ ->
-
- auto-beam-engraver.cc:459: warning: value computed is not used (gcc: 2.96) */
- count_i_ = count_i_ + 1;
+
+ count_ ++;
}
+
+ENTER_DESCRIPTION (Auto_beam_engraver,
+/* descr */ "Generate beams based on measure characteristics and observed "
+"Stems. Uses beatLength, measureLength and measurePosition to decide "
+"when to start and stop a beam. Overriding beaming is done through "
+"@ref{Stem_engraver} properties stemLeftBeamCount and "
+"stemRightBeamCount. "
+,
+/* creats*/ "Beam",
+/* accepts */ "",
+/* acks */ "stem-interface rest-interface beam-interface bar-line-interface",
+/* reads */ "autoBeaming autoBeamSettings beatLength subdivideBeams",
+/* write */ "");
projects / lilypond.git / blobdiff