source file of the GNU LilyPond music typesetter
- (c) 1999 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1999--2002 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "chord.hh"
+#include "musical-request.hh"
#include "warn.hh"
+#include "debug.hh"
+#include "music-list.hh"
+#include "musical-request.hh"
-Chord::Chord (Array<Musical_pitch> pitch_arr)
+
+SCM
+Chord::base_pitches (SCM tonic)
{
- pitch_arr_ = pitch_arr;
+ SCM base = SCM_EOL;
+
+ SCM major = Pitch (0, 2, 0).smobbed_copy ();
+ SCM minor = Pitch (0, 2, -1).smobbed_copy ();
+
+ base = gh_cons (tonic, base);
+ base = gh_cons (ly_pitch_transpose (ly_car (base), major), base);
+ base = gh_cons (ly_pitch_transpose (ly_car (base), minor), base);
+
+ return scm_reverse_x (base, SCM_EOL);
}
-// construct from parser output
-// urg: should split this up into understandable chunks
-Chord::Chord (Musical_pitch tonic, Array<Musical_pitch>* add_arr_p, Array<Musical_pitch>* sub_arr_p, Musical_pitch* inversion_p)
+SCM
+Chord::transpose_pitches (SCM tonic, SCM pitches)
{
- for (int i = 0; i < add_arr_p->size (); i++)
- {
- Musical_pitch p = tonic;
- Musical_pitch q = (*add_arr_p)[i];
- // duh, c7 should mean <c bes>
- if (q.notename_i_ == 6)
- q.accidental_i_--;
- p.transpose (q);
- (*add_arr_p)[i] = p;
- }
- add_arr_p->sort (Musical_pitch::compare);
- for (int i = 0; i < sub_arr_p->size (); i++)
+ /* map?
+ hoe doe je lambda in C?
+ */
+ SCM transposed = SCM_EOL;
+ for (SCM i = pitches; gh_pair_p (i); i = ly_cdr (i))
{
- Musical_pitch p = tonic;
- Musical_pitch q = (*sub_arr_p)[i];
- // duh, c7 should mean <c bes>
- if (q.notename_i_ == 6)
- q.accidental_i_--;
- p.transpose (q);
- (*sub_arr_p)[i] = p;
- }
- sub_arr_p->sort (Musical_pitch::compare);
-
- Musical_pitch third (2);
- Musical_pitch mthird (2, -1);
- Musical_pitch missing;
- missing = tonic;
- missing.transpose (third);
-
- Musical_pitch p;
- p = tonic;
- p.transpose (third);
- p.transpose (mthird);
-
- /*
- must have minimum at 5 (3 is added automatically as missing)
- */
- if (!add_arr_p->size ())
- add_arr_p->push (p);
- else if ((add_arr_p->top () < p) && (add_arr_p->top ().notename_i_ != p.notename_i_))
- add_arr_p->push (p);
- add_arr_p->sort (Musical_pitch::compare);
-
- Array<Musical_pitch> triads;
- triads.push (third); // c e
- triads.push (mthird); // d f
- triads.push (mthird); // e g
- triads.push (third); // f a
- triads.push (third); // g b
- triads.push (mthird); // a c
- triads.push (mthird); // b d
-
- /*
- if first addition is 4, assume sus4 and don't add third implicitely
- */
- Musical_pitch sus (3);
- sus.transpose (tonic);
- if (add_arr_p->size ())
- if ((*add_arr_p)[0] == sus)
- missing.transpose (mthird);
-
- /*
- add missing triads
- */
- for (int i = 0; i < add_arr_p->size ();)
- {
- Musical_pitch p = (*add_arr_p)[i];
- if (p > missing)
- while (p > missing)
- {
- if (p.notename_i_ != missing.notename_i_)
- {
- if ((missing.notename_i_ - tonic.notename_i_ + 7) % 7 == 6)
- {
- Musical_pitch special_seven = missing;
- Musical_pitch lower (0, -1);
- special_seven.transpose (lower);
- add_arr_p->insert (special_seven, i++);
- }
- else
- add_arr_p->insert (missing, i++);
- }
- missing.transpose (triads[(missing.notename_i_ - tonic.notename_i_ + 7) % 7]);
- }
- else if (p.notename_i_ == missing.notename_i_)
- missing.transpose (triads[(missing.notename_i_ - tonic.notename_i_ + 7) % 7]);
- else
- i++;
+ transposed = gh_cons (ly_pitch_transpose (tonic, ly_car (i)),
+ transposed);
}
+ return scm_reverse_x (transposed, SCM_EOL);
+}
- /*
- add tonic
- */
- if (!add_arr_p->size () || ((*add_arr_p)[0] != tonic))
- add_arr_p->insert (tonic, 0);
+/*
+ burp, in SCM duw je gewoon een (if (= (step x) 7) (...)) door pitches
- /*
- add all that aren't subtracted
- */
- for (int i = 0; i < add_arr_p->size (); i++)
+ Lower step STEP.
+ If step == 0, lower all.
+ */
+SCM
+Chord::lower_step (SCM tonic, SCM pitches, SCM step)
+{
+ SCM lowered = SCM_EOL;
+ for (SCM i = pitches; gh_pair_p (i); i = ly_cdr (i))
{
- Musical_pitch p = (*add_arr_p)[i];
- int j = 0;
- for (; j < sub_arr_p->size (); j++)
- if (p == (*sub_arr_p)[j])
- {
- sub_arr_p->del (j);
- j = -1;
- break;
- }
- if (j == sub_arr_p->size ())
- pitch_arr_.push (p);
+ SCM p = ly_car (i);
+ if (gh_equal_p (step_scm (tonic, ly_car (i)), step)
+ || gh_scm2int (step) == 0)
+ {
+ p = ly_pitch_transpose (p, Pitch (0, 0, -1).smobbed_copy ());
+ }
+ lowered = gh_cons (p, lowered);
}
+ return scm_reverse_x (lowered, SCM_EOL);
+}
- for (int i = 0; i < sub_arr_p->size (); i++)
- warning (_f ("invalid subtraction: not part of chord: %s",
- (*sub_arr_p)[i].str ()));
-
- if (inversion_p)
+/* Return member that has same notename, disregarding octave or alterations */
+SCM
+Chord::member_notename (SCM p, SCM pitches)
+{
+ /* If there's an exact match, make sure to return that */
+ SCM member = gh_member (p, pitches);
+ if (member == SCM_BOOL_F)
{
- int i = 0;
- for (; i < pitch_arr_.size (); i++)
- if ((pitch_arr_[i].notename_i_ == inversion_p->notename_i_)
- && (pitch_arr_[i].accidental_i_ == inversion_p->accidental_i_))
- break;
- if (i == pitch_arr_.size ())
- warning (_f ("invalid inversion pitch: not part of chord: %s",
- inversion_p->str ()));
- else
- {
- /*
- urg
- should be run-time switchable "chordInversionPreserve", howto?
-
- there are two ways commonly used to rearrange a chord with
- an inversion:
-
- 1. rebuild pitch list, taking inversion as base
- */
-#if 0
- rebuild_from_base (i);
-#else
+ for (SCM i = pitches; gh_pair_p (i); i = ly_cdr (i))
+ {
/*
- or
- 2. insert inversion as lowest (at first position)
- */
- rebuild_with_bass (i);
-#endif
+ Urg, eindelijk gevonden: () != #f, kan maar niet aan wennen.
+ Anders kon iets korter...
+ */
+ if (unsmob_pitch (p)->notename_i_
+ == unsmob_pitch (ly_car (i))->notename_i_)
+ {
+ member = ly_car (i);
+ break;
+ }
}
- delete inversion_p;
}
+ else
+ member = ly_car (member);
+ return member;
}
-String
-Chord::banter_str (Musical_pitch* inversion) const
+/* Return member that has same notename and alteration, disregarding octave */
+SCM
+Chord::member_pitch (SCM p, SCM pitches)
{
- Musical_pitch tonic = pitch_arr_[0];
-
- Array<Musical_pitch> scale;
- scale.push (Musical_pitch (0)); // c
- scale.push (Musical_pitch (1)); // d
- scale.push (Musical_pitch (2)); // e
- scale.push (Musical_pitch (3)); // f
- scale.push (Musical_pitch (4)); // g
- scale.push (Musical_pitch (5)); // a
- // 7 always means 7-...
- scale.push (Musical_pitch (6, -1)); // b
-
-
- for (int i = 0; i < scale.size (); i++)
- scale[i].transpose (tonic);
-
- //urg, should do translation in scheme.
- char const *acc[] = {"\\textflat\\textflat ", "\\textflat ", "", "\\textsharp " , "\\textsharp\\textsharp "};
- String tonic_str = tonic.str ();
- tonic_str = tonic_str.left_str (1).upper_str ()
- + acc[tonic.accidental_i_ + 2];
-
- String add_str;
- String sub_str;
- String sep_str;
- String sub_sep_str;
- int last_trap = 1;
- for (int i=1; i < pitch_arr_.size (); i++)
+ /* If there's an exact match, make sure to return that */
+ SCM member = gh_member (p, pitches);
+ if (member == SCM_BOOL_F)
{
- Musical_pitch p = pitch_arr_[i];
- int trap = p.notename_i_ - tonic.notename_i_
- + (p.octave_i_ - tonic.octave_i_) * 7;
- while (trap < 0)
- trap += 7;
- trap++;
- while (trap - last_trap > 2)
+ for (SCM i = pitches; gh_pair_p (i); i = ly_cdr (i))
{
- last_trap += 2;
- sub_str += sub_sep_str + "no" + to_str (last_trap);
- sub_sep_str = "/";
- }
- last_trap = trap;
- int accidental = p.accidental_i_ - scale[(trap - 1) % 7].accidental_i_;
- if ((trap == 3) && (accidental == -1))
- tonic_str += "m"; // hmm
- else if (accidental || (!(trap % 2) || ((i + 1 == pitch_arr_.size ()) && (trap > 5))))
- {
- add_str += sep_str;
- if ((trap == 7) && (accidental == 1))
- add_str += "maj7";
- else
- {
- add_str += to_str (trap);
- if (accidental)
- add_str += accidental < 0 ? "-" : "+";
- // catch "C4/no3"; remove "no3"
- if (trap == 4)
- {
- int i = sub_str.index_i ("no3");
- if (i != -1)
- sub_str = sub_str.nomid_str (i, 3);
- if (!sub_str.length_i ())
- sub_sep_str = "";
- }
- }
- sep_str = "/";
+ if (unsmob_pitch (p)->notename_i_
+ == unsmob_pitch (ly_car (i))->notename_i_
+ && unsmob_pitch (p)->alteration_i_
+ == unsmob_pitch (ly_car (i))->alteration_i_)
+ {
+ member = ly_car (i);
+ break;
+ }
}
}
+ else
+ member = ly_car (member);
+ return member;
+}
- String inversion_str;
- if (inversion)
- {
- inversion_str = inversion->str ();
- inversion_str = "/" + inversion_str.left_str (1).upper_str ()
- + acc[tonic.accidental_i_ + 2];
+SCM
+Chord::step_scm (SCM tonic, SCM p)
+{
+ /* De Pitch intervaas is nog beetje sleutelgat? */
+ int i = unsmob_pitch (p)->notename_i_
+ - unsmob_pitch (tonic)->notename_i_
+ + (unsmob_pitch (p)->octave_i_
+ - unsmob_pitch (tonic)->octave_i_) * 7;
+ while (i < 0)
+ i += 7;
+ i++;
+ return gh_int2scm (i);
+}
- }
+/*
+ Assuming that PITCHES is a chord, with tonic (CAR PITCHES), find
+ missing thirds, only considering notenames. Eg, for
- if (sub_str.length_i ())
- sub_str = sep_str + sub_str;
- String str = tonic_str + "$^{" + add_str + sub_str + "}$" + inversion_str;
- return str;
-}
+ PITCHES = c gis d'
+
+ return
+
+ MISSING = e b'
-int
-Chord::find_tonic_i () const
+*/
+SCM
+Chord::missing_thirds (SCM pitches)
{
- /*
- find tonic
-
- first try: base of longest line of triads
- */
- int tonic_i = 0;
- int longest_i = 0;
- for (int i = 0; i < pitch_arr_.size (); i++)
+ SCM thirds = SCM_EOL;
+
+ /* is the third c-e, d-f, etc. small or large? */
+ int minormajor_a[] = {0, -1, -1, 0, 0, -1, -1};
+ for (int i=0; i < 7; i++)
+ thirds = gh_cons (Pitch (0, 2, minormajor_a[i]).smobbed_copy (),
+ thirds);
+ thirds = scm_vector (scm_reverse_x (thirds, SCM_EOL));
+
+ SCM tonic = ly_car (pitches);
+ SCM last = tonic;
+ SCM missing = SCM_EOL;
+
+ for (SCM i = pitches; gh_pair_p (i);)
{
- int no_triad_i = 0;
- int last_i = pitch_arr_[i % pitch_arr_.size ()].notename_i_;
- int j = 0;
- for (; j < pitch_arr_.size (); j++)
+ SCM p = ly_car (i);
+ int step = gh_scm2int (step_scm (tonic, p));
+
+ if (unsmob_pitch (last)->notename_i_ == unsmob_pitch (p)->notename_i_)
{
- int cur_i = pitch_arr_[(i + j + 1) % pitch_arr_.size ()].notename_i_;
- int gap = cur_i - last_i;
- while (gap < 0)
- gap += 7;
- gap %= 7;
- if (gap == 2)
- last_i = cur_i;
- else
- no_triad_i++;
+ int third = (unsmob_pitch (last)->notename_i_
+ - unsmob_pitch (tonic)-> notename_i_ + 7) % 7;
+ last = ly_pitch_transpose (last, scm_vector_ref (thirds, gh_int2scm (third)));
}
- if (j - no_triad_i > longest_i)
+
+ if (step > gh_scm2int (step_scm (tonic, last)))
{
- longest_i = j - no_triad_i;
- tonic_i = i;
+ while (step > gh_scm2int (step_scm (tonic, last)))
+ {
+ missing = gh_cons (last, missing);
+ int third = (unsmob_pitch (last)->notename_i_
+ - unsmob_pitch (tonic)->notename_i_ + 7) % 7;
+ last = ly_pitch_transpose (last, scm_vector_ref (thirds,
+ gh_int2scm (third)));
+ }
+ }
+ else
+ {
+ i = ly_cdr (i);
}
}
+
+ return lower_step (tonic, missing, gh_int2scm (7));
+}
+
+/* Return PITCHES with PITCH added not as lowest note */
+SCM
+Chord::add_above_tonic (SCM pitch, SCM pitches)
+{
+ /* Should we maybe first make sure that PITCH is below tonic? */
+ if (pitches != SCM_EOL)
+ while (Pitch::less_p (pitch, ly_car (pitches)) == SCM_BOOL_T)
+ pitch = ly_pitch_transpose (pitch, Pitch (1, 0, 0).smobbed_copy ());
+
+ pitches = gh_cons (pitch, pitches);
+ return scm_sort_list (pitches, Pitch::less_p_proc);
+}
- /*
- second try: note after biggest gap
- */
- int biggest_i = 0;
- // if (longest_i)
- if (longest_i <= 1)
- for (int i = 0; i < pitch_arr_.size (); i++)
- {
- int gap = pitch_arr_[i].notename_i_
- - pitch_arr_[(i - 1 + pitch_arr_.size ())
- % pitch_arr_.size ()].notename_i_;
- while (gap < 0)
- gap += 7;
- gap %= 7;
- if (gap > biggest_i)
- {
- biggest_i = gap;
- tonic_i = i;
- }
- }
- return tonic_i;
+/* Return PITCHES with PITCH added as lowest note */
+SCM
+Chord::add_below_tonic (SCM pitch, SCM pitches)
+{
+ if (pitches != SCM_EOL)
+ while (Pitch::less_p (ly_car (pitches), pitch) == SCM_BOOL_T)
+ pitch = ly_pitch_transpose (pitch, Pitch (-1, 0, 0).smobbed_copy ());
+ return gh_cons (pitch, pitches);
}
-void
-Chord::rebuild_from_base (int base_i)
+
+
+/*
+ Parser stuff
+
+ Construct from parser output:
+
+ PITCHES is the plain chord, it does not include bass or inversion
+
+ Part of Chord:: namespace for now, because we do lots of
+ chord-manipulating stuff.
+*/
+SCM
+Chord::tonic_add_sub_to_pitches (SCM tonic, SCM add, SCM sub)
{
- Musical_pitch last (0, 0, -5);
- Array<Musical_pitch> new_arr;
- for (int i = 0; i < pitch_arr_.size (); i++)
+ /* urg: catch dim modifier: 3rd, 5th, 7th, .. should be lowered */
+ bool dim_b = false;
+ for (SCM i = add; gh_pair_p (i); i = ly_cdr (i))
{
- Musical_pitch p = pitch_arr_[(base_i + i) % pitch_arr_.size ()];
- if (p < last)
- {
- p.octave_i_ = last.octave_i_;
- if (p < last)
- p.octave_i_++;
+ Pitch* p = unsmob_pitch (ly_car (i));
+ /* Ugr
+ This chord modifier stuff should really be fixed
+ Cmaj7 yields C 7/7-
+ */
+ if (p->octave_i () == -100)
+ {
+ p->octave_i_ = 0;
+ dim_b = true;
}
- new_arr.push (p);
- last = p;
}
- pitch_arr_ = new_arr;
-}
+ add = transpose_pitches (tonic, add);
+ add = lower_step (tonic, add, gh_int2scm (7));
+ add = scm_sort_list (add, Pitch::less_p_proc);
+ add = ly_unique (add);
+
+ sub = transpose_pitches (tonic, sub);
+ sub = lower_step (tonic, sub, gh_int2scm (7));
+ sub = scm_sort_list (sub, Pitch::less_p_proc);
+
+ /* default chord includes upto 5: <1, 3, 5> */
+ add = gh_cons (tonic, add);
+ SCM tmp = add;
+
+ SCM fifth = ly_last (base_pitches (tonic));
+ int highest_step = gh_scm2int (step_scm (tonic, ly_last (tmp)));
+ if (highest_step < 5)
+ tmp = ly_snoc (fifth, tmp);
+ else if (dim_b)
+ {
+ add = lower_step (tonic, add, gh_int2scm (5));
+ add = lower_step (tonic, add, gh_int2scm (7));
+ }
-void
-Chord::rebuild_insert_inversion (int tonic_i)
-{
- Musical_pitch inversion = pitch_arr_.get (0);
- rebuild_from_base (tonic_i - 1);
- if (pitch_arr_.size ())
+ /* find missing thirds */
+ SCM missing = missing_thirds (tmp);
+ if (highest_step < 5)
+ missing = ly_snoc (fifth, missing);
+
+ /* if dim modifier is given: lower all missing */
+ if (dim_b)
+ missing = lower_step (tonic, missing, gh_int2scm (0));
+
+ /* if additions include any 3, don't add third */
+ SCM third = ly_cadr (base_pitches (tonic));
+ if (member_notename (third, add) != SCM_BOOL_F)
+ missing = scm_delete (third, missing);
+
+ /* if additions include any 4, assume sus4 and don't add third implicitely
+ C-sus (4) = c f g (1 4 5) */
+ SCM sus = ly_pitch_transpose (tonic, Pitch (0, 3, 0).smobbed_copy ());
+ if (member_notename (sus, add) != SCM_BOOL_F)
+ missing = scm_delete (third, missing);
+
+ /* if additions include some 5, don't add fifth */
+ if (member_notename (fifth, add) != SCM_BOOL_F)
+ missing = scm_delete (fifth, missing);
+
+ /* complete the list of thirds to be added */
+ add = gh_append2 (missing, add);
+ add = scm_sort_list (add, Pitch::less_p_proc);
+
+ SCM pitches = SCM_EOL;
+ /* Add all that aren't subtracted */
+ for (SCM i = add; gh_pair_p (i); i = ly_cdr (i))
{
- inversion.octave_i_ = pitch_arr_[0].octave_i_ - 1;
- while (inversion < pitch_arr_[0])
- inversion.octave_i_++;
+ SCM p = ly_car (i);
+ SCM s = member_notename (p, sub);
+ if (s != SCM_BOOL_F)
+ sub = scm_delete (s, sub);
+ else
+ pitches = gh_cons (p, pitches);
}
- for (int i = 0; i < pitch_arr_.size (); i++)
- if (pitch_arr_[i] > inversion)
- {
- pitch_arr_.insert (inversion, i);
- break;
- }
+ pitches = scm_sort_list (pitches, Pitch::less_p_proc);
+
+ for (SCM i = sub; gh_pair_p (i); i = ly_cdr (i))
+ warning (_f ("invalid subtraction: not part of chord: %s",
+ unsmob_pitch (ly_car (i))->str ()));
+
+ return pitches;
}
-void
-Chord::rebuild_with_bass (int bass_i)
+
+/* --Het lijkt me dat dit in het paarse gedeelte moet. */
+Simultaneous_music *
+Chord::get_chord (SCM tonic, SCM add, SCM sub, SCM inversion, SCM bass, SCM dur)
{
- Musical_pitch inversion = pitch_arr_.get (bass_i);
- // is lowering fine, or should others be raised?
- if (pitch_arr_.size ())
- while (inversion > pitch_arr_[0])
- inversion.octave_i_--;
- pitch_arr_.insert (inversion, 0);
+ SCM pitches = tonic_add_sub_to_pitches (tonic, add, sub);
+ SCM list = SCM_EOL;
+ if (inversion != SCM_EOL)
+ {
+ /* If inversion requested, check first if the note is part of chord */
+ SCM s = member_pitch (inversion, pitches);
+ if (s != SCM_BOOL_F)
+ {
+ /* Then, delete and add as base note, ie: the inversion */
+ pitches = scm_delete (s, pitches);
+ Note_req* n = new Note_req;
+ n->set_mus_property ("pitch", ly_car (add_below_tonic (s, pitches)));
+ n->set_mus_property ("duration", dur);
+ n->set_mus_property ("inversion", SCM_BOOL_T);
+ list = gh_cons (n->self_scm (), list);
+ scm_gc_unprotect_object (n->self_scm ());
+ }
+ else
+ warning (_f ("invalid inversion pitch: not part of chord: %s",
+ unsmob_pitch (inversion)->str ()));
+ }
+
+ /* Bass is easy, just add if requested */
+ if (bass != SCM_EOL)
+ {
+ Note_req* n = new Note_req;
+ n->set_mus_property ("pitch", ly_car (add_below_tonic (bass, pitches)));
+ n->set_mus_property ("duration", dur);
+ n->set_mus_property ("bass", SCM_BOOL_T);
+ list = gh_cons (n->self_scm (), list);
+ scm_gc_unprotect_object (n->self_scm ());
+ }
+
+ for (SCM i = pitches; gh_pair_p (i); i = ly_cdr (i))
+ {
+ Note_req* n = new Note_req;
+ n->set_mus_property ("pitch", ly_car (i));
+ n->set_mus_property ("duration", dur);
+ list = gh_cons (n->self_scm (), list);
+ scm_gc_unprotect_object (n->self_scm ());
+ }
+
+ Simultaneous_music*v = new Request_chord (SCM_EOL);
+ v->set_mus_property ("elements", list);
+
+ return v;
}
+
+
projects / lilypond.git / blobdiff