/*
mensural-ligature-engraver.cc -- implement Mensural_ligature_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2002--2004 Juergen Reuter <reuter@ipd.uka.de>
- */
-#include "mensural-ligature.hh"
+ (c) 2002--2009 Juergen Reuter <reuter@ipd.uka.de>,
+ Pal Benko <benkop@freestart.hu>
+*/
+
#include "coherent-ligature-engraver.hh"
-#include "event.hh"
-#include "warn.hh"
-#include "item.hh"
-#include "spanner.hh"
-#include "rod.hh"
-#include "paper-column.hh"
+#include "font-interface.hh"
+#include "international.hh"
+#include "mensural-ligature.hh"
#include "note-column.hh"
-#include "rhythmic-head.hh"
#include "note-head.hh"
+#include "output-def.hh"
+#include "paper-column.hh"
+#include "pitch.hh"
+#include "rhythmic-head.hh"
+#include "spanner.hh"
#include "staff-symbol-referencer.hh"
-#include "paper-def.hh"
-#include "font-interface.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
/*
- * TODO: My resources on Franco of Cologne's rules claim that his
- * rules map ligature<->mensural timing in a non-ambigous way, but in
- * fact, as presented in these resources, the rules become ambigous as
- * soon as there appear durations other than breves within a ligature
- * with more than two heads (ligatura ternaria etc.). Hence, the
- * below implementation is an approximation of what I think the rules
- * could look like if forced to be non-ambigous. This should be
- * further investigated.
+ * TODO: accidentals are aligned with the first note;
+ * they must appear ahead.
*
- * TODO: The automat is quite complicated, and its design is error
- * prone (and most probably, it behaves wrong for some very special
- * cases). Maybe we can find a better paradigm for modelling Franco
- * of Cologne's rules?
+ * TODO: prohibit ligatures having notes differing only in accidentals
+ * (like \[ a\breve g as \])
*
- * TODO: dotted heads: when applying Franco of Cologne's mapping, put
- * dots *above* (rather than after) affected ligature heads.
+ * TODO: do something with multiple voices within a ligature. See
+ * for example:
+ * Ockeghem: Missa Ecce ancilla domini, bassus part, end of Christe.
*
- * TODO: prohibit multiple voices within a ligature.
- *
- * TODO: enhance robustness: in case of an illegal ligature (e.g. the
- * user events for a ligature that contains a minima or STATE_ERROR
- * is reached), automatically break the ligature into smaller, valid
- * pieces.
+ * TODO: enhance robustness: in case of an invalid ligature (e.g. the
+ * input specifies a ligature that contains a minima), automatically
+ * break the ligature into smaller, valid pieces. Such a piece may be
+ * a single note.
*/
+
class Mensural_ligature_engraver : public Coherent_ligature_engraver
{
protected:
virtual Spanner *create_ligature_spanner ();
- virtual void build_ligature (Spanner *ligature, Array<Grob_info> primitives);
-
+ virtual void build_ligature (Spanner *ligature, vector<Grob_info> primitives);
+ DECLARE_TRANSLATOR_LISTENER (ligature);
+
public:
TRANSLATOR_DECLARATIONS (Mensural_ligature_engraver);
private:
- int apply_transition (Array<Grob_info> primitives,
- int state, int input, int i);
- void transform_heads (Array<Grob_info> primitives);
- void propagate_properties (Spanner *ligature, Array<Grob_info> primitives);
- void fold_up_primitives (Array<Grob_info> primitives);
- void join_primitives (Array<Grob_info> primitives);
+ void transform_heads (vector<Grob_info> primitives);
+ void propagate_properties (Spanner *ligature, vector<Grob_info> primitives);
+ void fold_up_primitives (vector<Grob_info> primitives);
};
+IMPLEMENT_TRANSLATOR_LISTENER (Mensural_ligature_engraver, ligature);
+void
+Mensural_ligature_engraver::listen_ligature (Stream_event *ev)
+{
+ Ligature_engraver::listen_ligature (ev);
+}
Mensural_ligature_engraver::Mensural_ligature_engraver ()
{
+ brew_ligature_primitive_proc =
+ Mensural_ligature::brew_ligature_primitive_proc;
}
Spanner *
Mensural_ligature_engraver::create_ligature_spanner ()
{
- return make_spanner ("MensuralLigature");
+ return make_spanner ("MensuralLigature", SCM_EOL);
}
-/*
- * The following lines implement a finite state automat. Given a
- * sequence of durations (Longa, Brevis, Semibrevis) or
- * end-of-ligature-event as input, the automat outputs a sequence of
- * events for grobs that form a proper ligature.
- */
-
-/*
- * This enumeration represents the set of possible input values to the
- * automat. There may (potentially) be any sequence of Longa, Brevis,
- * and Semibrevis duration symbols fed into the automat, with a final
- * EndOfLigature symbol to terminate the ligature. Other durations
- * are explicitly prohibited. Depending on the note's pitch of the
- * preceding and the current input, the melodic line may be ascending
- * or descending. Per definition, the melodic line must either ascend
- * or descend, because if the pitches were twice the same, the two
- * notes would be merged into a single one (as long as not resulting
- * in a prohibited duration). In the case of the EndOfLigature
- * symbol, the melodic line is undefined (but we still have ascending
- * and descending case for the sake of consistency, making the automat
- * simpler).
- */
-enum Ligature_input
-{
- // Ascending/Descending Longa/Brevis/Semibrevis/EndOfLigature
- INPUT_AL = 0,
- INPUT_DL,
- INPUT_AB,
- INPUT_DB,
- INPUT_AS,
- INPUT_DS,
- INPUT_AE,
- INPUT_DE,
-};
-
-/*
- * This enumeration represents all possible internal states of the
- * automat. Besides the generic states START, ERROR, and END, the
- * remaining states L, B, S, and SS describe pending values from the
- * sequence of input values that have not yet been transformed to
- * proper output values, including the melodic direction
- * (ascending/descending) for state L.
- */
-enum Ligature_state
+void
+Mensural_ligature_engraver::transform_heads (vector<Grob_info> primitives)
{
- // aL = ascending Longa, dL descending Longa, B = Brevis, S =
- // Semibrevis, SS = 2 Semibreves
- STATE_START = 0,
- STATE_aL,
- STATE_dL,
- STATE_B,
- STATE_S,
- STATE_SS,
- STATE_ERROR,
- STATE_END,
-};
+ if (primitives.size () < 2)
+ {
+ warning (_ ("ligature with less than 2 heads -> skipping"));
+ return;
+ }
+ int prev_pitch = 0;
+ bool at_beginning = true;
-/*
- * The following array represents the transitions of the automat:
- * given some state and input, it maps to a new state, according (with
- * the limitations as described above) to the rules of Franco of
- * Cologne.
- */
-const int/*new state*/ transition_state[/*old state*/][8/*input*/] =
-{
- {STATE_aL, STATE_dL, STATE_B, STATE_B,
- STATE_S, STATE_S, STATE_ERROR, STATE_ERROR}, // was: STATE_START
- {STATE_aL, STATE_dL, STATE_B, STATE_START,
- STATE_ERROR, STATE_ERROR, STATE_END, STATE_END}, // was: STATE_aL
- {STATE_aL, STATE_dL, STATE_B, STATE_START,
- STATE_ERROR, STATE_ERROR, STATE_END, STATE_END}, // was: STATE_dL
- {STATE_aL, STATE_dL, STATE_B, STATE_START,
- STATE_ERROR, STATE_ERROR, STATE_END, STATE_END}, // was: STATE_B
- {STATE_ERROR, STATE_ERROR, STATE_ERROR, STATE_ERROR,
- STATE_SS, STATE_SS, STATE_ERROR, STATE_ERROR}, // was: STATE_S
- {STATE_aL, STATE_dL, STATE_B, STATE_B,
- STATE_S, STATE_S, STATE_END, STATE_END}, // was: STATE_SS
- {STATE_ERROR, STATE_ERROR, STATE_ERROR, STATE_ERROR,
- STATE_ERROR, STATE_ERROR, STATE_ERROR, STATE_ERROR}, // was: STATE_ERROR
- {STATE_ERROR, STATE_ERROR, STATE_ERROR, STATE_ERROR,
- STATE_ERROR, STATE_ERROR, STATE_ERROR, STATE_ERROR}, // was: STATE_END
-};
+ // needed so that we can check whether
+ // the previous note can be turned into a flexa
+ bool prev_brevis_shape = false;
-/*
- * The following array represents the output of the automat while
- * switching from one state to another: given some state and input, it
- * maps to the output produced when switching to the next state,
- * according (with the limitations as described above) to the rules of
- * Franco of Cologne.
- */
-const int/*output*/ transition_output[/*old state*/][8/*input*/] =
-{
- {MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE,
- MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE}, // was: STATE_START
- {MLP_sc, MLP_ss, MLP_sc, MLP_LB,
- MLP_NONE, MLP_NONE, MLP_sc, MLP_sc}, // was: STATE_aL
- {MLP_sc, MLP_ss, MLP_sc, MLP_LB,
- MLP_NONE, MLP_NONE, MLP_ss, MLP_ss}, // was: STATE_dL
- {MLP_ss, MLP_cs, MLP_ss, MLP_BB,
- MLP_NONE, MLP_NONE, MLP_ss, MLP_ss} , // was: STATE_B
- {MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE,
- MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE}, // was: STATE_S
- {MLP_SS, MLP_SS, MLP_SS, MLP_SS,
- MLP_SS, MLP_SS, MLP_SS, MLP_SS} , // was: STATE_SS
- {MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE,
- MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE}, // was: STATE_ERROR
- {MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE,
- MLP_NONE, MLP_NONE, MLP_NONE, MLP_NONE}, // was: STATE_END
-};
+ bool prev_semibrevis = false;
+ Item *prev_primitive = NULL;
-int
-Mensural_ligature_engraver::apply_transition (Array<Grob_info> primitives,
- int state, int input, int i)
-{
- int output = transition_output[state][input];
- Item *last_last_primitive = (i > 1) ?
- dynamic_cast<Item*> (primitives[i-2].grob_) : 0;
- Item *last_primitive = (i > 0) ?
- dynamic_cast<Item*> (primitives[i-1].grob_) : 0;
- Item *primitive = (i < primitives.size ()) ?
- dynamic_cast<Item*> (primitives[i].grob_) : 0;
- switch (output)
+ for (vsize i = 0, s = primitives.size (); i < s; i++)
{
- case MLP_NONE:
- // skip note head, expecting a primitive with two note heads
- break;
- case MLP_sc:
- case MLP_ss:
- case MLP_cs:
- // primitive with single note head
- if (!last_primitive)
- {
- programming_error ("last_primitive undefined");
- break;
- }
- last_primitive->set_property ("primitive", scm_int2num (output));
- break;
- case MLP_BB:
- case MLP_LB:
- // primitive with two note heads
- if (!last_primitive)
- {
- programming_error ("last_primitive undefined");
- break;
- }
- if (!primitive)
- {
- programming_error ("primitive undefined");
- break;
- }
- last_primitive->set_property ("primitive", scm_int2num (output));
- primitive->set_property ("primitive", scm_int2num (MLP_NONE));
- break;
- case MLP_SS:
- // delayed primitive with two note heads
- if (!last_last_primitive)
- {
- programming_error ("last_last_primitive undefined");
- break;
- }
- if (!last_primitive)
- {
- programming_error ("last_primitive undefined");
- break;
- }
- last_last_primitive->set_property ("primitive", scm_int2num (output));
- last_primitive->set_property ("primitive", scm_int2num (MLP_NONE));
- break;
- default:
- programming_error (_f ("unexpected case fall-through"));
- break;
- }
- return transition_state[state][input];
-}
+ Grob_info info = primitives[i];
+ Item *primitive = dynamic_cast<Item *> (info.grob ());
+ int duration_log = Rhythmic_head::duration_log (primitive);
-void
-Mensural_ligature_engraver::transform_heads (Array<Grob_info> primitives)
-{
- if (primitives.size () < 2)
- {
- warning (_f ("ligature with less than 2 heads -> skipping"));
- return;
+ Stream_event *nr = info.event_cause ();
+
+ /*
+ ugh. why not simply check for pitch?
+ */
+ if (!nr->in_event_class ("note-event"))
+ {
+ nr->origin ()->warning
+ (_ ("cannot determine pitch of ligature primitive -> skipping"));
+ at_beginning = true;
+ continue;
+ }
+
+ int pitch = unsmob_pitch (nr->get_property ("pitch"))->steps ();
+ int delta_pitch = 0;
+
+ if (at_beginning)
+ {
+ if (i == s - 1)
+ {
+ // we can get here after invalid input
+ nr->origin ()->warning
+ (_ ("single note ligature - skipping"));
+ break;
+ }
+ prev_semibrevis = prev_brevis_shape = false;
+ prev_primitive = NULL;
+ }
+ else
+ {
+ delta_pitch = pitch - prev_pitch;
+ if (delta_pitch == 0)
+ {
+ nr->origin ()->warning
+ (_ ("prime interval within ligature -> skipping"));
+ at_beginning = true;
+ primitive->set_property ("primitive",
+ scm_from_int (MLP_NONE));
+ continue;
+ }
+ }
+
+ if (duration_log < -3 // is this possible at all???
+ || duration_log > 0)
+ {
+ nr->origin ()->warning
+ (_ ("mensural ligature: duration none of Mx, L, B, S -> skipping"));
+ primitive->set_property ("primitive",
+ scm_from_int (MLP_NONE));
+ at_beginning = true;
+ continue;
+ }
+
+ // apply_transition replacement begins
+ bool general_case = true;
+
+ // first check special cases
+ // 1. beginning
+ if (at_beginning)
+ {
+ // a. semibreves
+ if (duration_log == 0)
+ {
+ primitive->set_property ("primitive",
+ scm_from_int (MLP_UP | MLP_BREVIS));
+ prev_semibrevis = prev_brevis_shape = true;
+ general_case = false;
+ }
+ // b. descendens longa or brevis
+ else if (i < s - 1
+ && (unsmob_pitch (primitives[i + 1].event_cause ()
+ ->get_property ("pitch"))->steps () < pitch)
+ && duration_log > -3)
+ {
+ int left_stem = duration_log == -1 ? MLP_DOWN : 0;
+
+ primitive->set_property ("primitive",
+ scm_from_int (left_stem | MLP_BREVIS));
+ prev_brevis_shape = true;
+ prev_semibrevis = general_case = false;
+ }
+ }
+ // 2. initial semibrevis must be followed by another one
+ else if (prev_semibrevis)
+ {
+ prev_semibrevis = false;
+ if (duration_log == 0)
+ {
+ primitive->set_property ("primitive", scm_from_int (MLP_BREVIS));
+ general_case = false;
+ }
+ else
+ {
+ nr->origin ()->warning
+ (_ ("semibrevis must be followed by another one -> skipping"));
+ primitive->set_property ("primitive",
+ scm_from_int (MLP_NONE));
+ at_beginning = true;
+ continue;
+ }
+ }
+ // 3. semibreves are otherwise not allowed
+ else if (duration_log == 0)
+ {
+ nr->origin ()->warning
+ (_ ("semibreves can only appear at the beginning of a ligature,\n"
+ "and there may be only zero or two of them"));
+ primitive->set_property ("primitive",
+ scm_from_int (MLP_NONE));
+ at_beginning = true;
+ continue;
+ }
+ // 4. end, descendens
+ else if (i == s - 1 && delta_pitch < 0)
+ {
+ // brevis; previous note must be turned into flexa
+ if (duration_log == -1)
+ {
+ if (prev_brevis_shape)
+ {
+ prev_primitive->set_property
+ ("primitive",
+ scm_from_int
+ (MLP_FLEXA
+ | (scm_to_int (prev_primitive->get_property ("primitive"))
+ & MLP_DOWN)));
+ primitive->set_property ("primitive", scm_from_int (MLP_NONE));
+ break; // no more notes, no join
+ }
+ else
+ {
+ nr->origin ()->warning
+ (_ ("invalid ligatura ending:\n"
+ "when the last note is a descending brevis,\n"
+ "the penultimate note must be another one,\n"
+ "or the ligatura must be LB or SSB"));
+ primitive->set_property ("primitive", scm_from_int (MLP_NONE));
+ break;
+ }
+ }
+ // longa
+ else if (duration_log == -2)
+ {
+ primitive->set_property ("primitive", scm_from_int (MLP_BREVIS));
+ general_case = false;
+ }
+ // else maxima; fall through regular case below
+ }
+
+ if (general_case)
+ {
+ static int const shape[3] = {MLP_MAXIMA, MLP_LONGA, MLP_BREVIS};
+
+ primitive->set_property ("primitive",
+ scm_from_int (shape[duration_log + 3]));
+ prev_brevis_shape = duration_log == -1;
+ }
+
+ // join_primitives replacement
+ if (!at_beginning)
+ {
+ /*
+ if the previous note is longa-shaped and this note is lower,
+ then the joining line may hide the stem, so it is made longer
+ to serve as stem as well
+ */
+ if (delta_pitch < 0
+ && (scm_to_int (prev_primitive->get_property ("primitive"))
+ & MLP_LONGA))
+ {
+ delta_pitch -= 6;
+ // instead of number 6
+ // the legth of the longa stem should be queried something like
+ // Font_interface::get_default_font (ligature)->find_by_name
+ // ("noteheads.sM2mensural").extent (Y_AXIS).length ()
+ }
+ prev_primitive->set_property ("join-right-amount",
+ scm_from_int (delta_pitch));
+ // perhaps set add-join as well
+ }
+ at_beginning = false;
+ prev_primitive = primitive;
+ prev_pitch = pitch;
+ // apply_transition replacement ends
}
- int state = STATE_START;
- Pitch last_pitch, pitch;
- bool have_last_pitch = 0, have_pitch = 0;
- for (int i = 0; i < primitives.size (); i++) {
- last_pitch = pitch;
- have_last_pitch = have_pitch;
- Grob_info info = primitives[i];
- int duration_log =
- Note_head::get_balltype (dynamic_cast<Item*> (info.grob_));
-
- Music *nr = info.music_cause ();
-
- /*
- ugh. why not simply check for pitch?
- */
- if (!nr->is_mus_type ("note-event"))
- {
- info.music_cause ()->origin ()->warning (_f ("can not determine pitch of ligature primitive -> skipping"));
- i++;
- state = STATE_START;
- have_pitch = 0;
- continue;
- }
- else
- {
- pitch = *unsmob_pitch (nr->get_property ("pitch"));
- have_pitch = 1;
- }
-
- int delta_pitch;
-
- if (!have_last_pitch)
- {
- delta_pitch = 0; // first pitch; delta undefined
- }
- else
- {
- delta_pitch = (pitch.steps () - last_pitch.steps ());
- if (Pitch::compare (last_pitch, pitch) == 0)
- {
- info.music_cause ()->origin ()->warning (_f ("prime interval within ligature -> skipping"));
- i++;
- state = STATE_START;
- have_pitch = 0;
- continue;
- }
- }
-
- if ((duration_log < -2) || (duration_log > 0))
- {
- info.music_cause ()->origin ()->warning (_f ("mensural ligature: duration none of L, B, S -> skipping"));
- i++;
- state = STATE_START;
- have_pitch = 0;
- continue;
- }
-
- int input = (duration_log + 2) * 2 + ((delta_pitch < 0) ? 1 : 0);
- state = apply_transition (primitives, state, input, i);
- // TODO: if (state == STATE_ERROR) { ... }
- }
-
- state = apply_transition (primitives, state, INPUT_AE, primitives.size ());
- // TODO: if (state == STATE_ERROR) { ... }
}
/*
*/
void
Mensural_ligature_engraver::propagate_properties (Spanner *ligature,
- Array<Grob_info> primitives)
+ vector<Grob_info> primitives)
{
- Real thickness = robust_scm2double (ligature->get_property ("thickness"), 1.4);
- thickness *= ligature->get_paper ()->get_dimension (ly_symbol2scm ("linethickness"));
+ Real thickness
+ = robust_scm2double (ligature->get_property ("thickness"), 1.4);
+ thickness
+ *= ligature->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+
+ Real head_width
+ = Font_interface::get_default_font (ligature)->
+ find_by_name ("noteheads.sM1mensural").extent (X_AXIS).length ();
+ Real flexa_width
+ = robust_scm2double (ligature->get_property ("flexa-width"), 2);
+ Real maxima_head_width
+ = Font_interface::get_default_font (ligature)->
+ find_by_name ("noteheads.sM1neomensural").extent (X_AXIS).length ();
- Real head_width =
- Font_interface::get_default_font (ligature)->
- find_by_name ("noteheads--1mensural").extent (X_AXIS).length ();
- Real flexa_width = robust_scm2double (ligature->get_property ("flexa-width"), 2);
flexa_width *= Staff_symbol_referencer::staff_space (ligature);
Real half_flexa_width = 0.5 * (flexa_width + thickness);
- for (int i = 0; i < primitives.size (); i++)
+ for (vsize i = 0; i < primitives.size (); i++)
{
- Item *primitive = dynamic_cast<Item*> (primitives[i].grob_);
- int output = ly_scm2int (primitive->get_property ("primitive"));
+ Item *primitive = dynamic_cast<Item *> (primitives[i].grob ());
+ int output = scm_to_int (primitive->get_property ("primitive"));
primitive->set_property ("thickness",
- scm_make_real (thickness));
- switch (output) {
+ scm_from_double (thickness));
+
+ switch (output & MLP_ANY)
+ {
case MLP_NONE:
primitive->set_property ("head-width",
- scm_make_real (half_flexa_width));
+ scm_from_double (half_flexa_width));
break;
- case MLP_sc:
- case MLP_ss:
- case MLP_cs:
+ case MLP_BREVIS:
+ case MLP_LONGA:
primitive->set_property ("head-width",
- scm_make_real (head_width));
+ scm_from_double (head_width));
break;
- case MLP_BB:
- case MLP_LB:
- case MLP_SS:
+ case MLP_MAXIMA:
primitive->set_property ("head-width",
- scm_make_real (half_flexa_width));
+ scm_from_double (maxima_head_width));
+ break;
+ case MLP_FLEXA:
+ primitive->set_property ("head-width",
+ scm_from_double (half_flexa_width));
primitive->set_property ("flexa-width",
- scm_make_real (flexa_width));
+ scm_from_double (flexa_width));
break;
default:
- programming_error (_f ("unexpected case fall-through"));
+ programming_error (_ ("unexpected case fall-through"));
break;
- }
+ }
}
}
void
-Mensural_ligature_engraver::fold_up_primitives (Array<Grob_info> primitives)
+Mensural_ligature_engraver::fold_up_primitives (vector<Grob_info> primitives)
{
Item *first = 0;
- Real distance = 0;
- for (int i = 0; i < primitives.size (); i++)
+ Real distance = 0.0;
+ Real dot_shift = 0.0;
+ for (vsize i = 0; i < primitives.size (); i++)
{
- Item *current = dynamic_cast<Item*> (primitives[i].grob_);
+ Item *current = dynamic_cast<Item *> (primitives[i].grob ());
if (i == 0)
{
first = current;
+ dot_shift = 1.5 * Staff_symbol_referencer::staff_space (first);
}
- get_set_column (current, first->get_column ());
+ move_related_items_to_column (current, first->get_column (),
+ distance);
- if (i > 0)
- {
- current->translate_axis (distance, X_AXIS);
- }
-
- distance +=
- ly_scm2double (current->get_property ("head-width")) -
- ly_scm2double (current->get_property ("thickness"));
- }
-}
+ distance
+ += scm_to_double (current->get_property ("head-width"))
+ - scm_to_double (current->get_property ("thickness"));
-void
-Mensural_ligature_engraver::join_primitives (Array<Grob_info> primitives)
-{
- Pitch last_pitch;
- for (int i = 0; i < primitives.size (); i++)
- {
- Grob_info info = primitives[i];
- Pitch pitch = *unsmob_pitch (info.music_cause ()->get_property ("pitch"));
- if (i > 0)
- {
- Item *primitive = dynamic_cast<Item*> (info.grob_);
- int output = ly_scm2int (primitive->get_property ("primitive"));
- if (output & MLP_ANY)
+ if (Rhythmic_head::dot_count (current) > 0)
+ // Move dots above/behind the ligature.
+ {
+ if (i + 1 < primitives.size ())
+ // dot in the midst => move above head
+ {
+ // FIXME: Amount of vertical dot-shift should depend on
+ // pitch.
+ //
+ // FIXME: dot placement is horizontally slightly off.
+ Rhythmic_head::get_dots (current)->translate_axis (dot_shift, Y_AXIS);
+ }
+ else
+ // trailing dot => move behind head
{
- int delta_pitch = (pitch.steps () - last_pitch.steps ());
- primitive->set_property ("join-left-amount",
- scm_int2num (delta_pitch));
+ double head_width =
+ scm_to_double (current->get_property ("head-width"));
+ Rhythmic_head::get_dots (current)->
+ translate_axis (head_width, X_AXIS);
}
}
- last_pitch = pitch;
}
}
void
Mensural_ligature_engraver::build_ligature (Spanner *ligature,
- Array<Grob_info> primitives)
+ vector<Grob_info> primitives)
{
transform_heads (primitives);
propagate_properties (ligature, primitives);
fold_up_primitives (primitives);
- join_primitives (primitives);
}
-ENTER_DESCRIPTION (Mensural_ligature_engraver,
-/* descr */ "Handles Mensural_ligature_events by glueing special ligature heads together.",
-/* creats*/ "MensuralLigature",
-/* accepts */ "ligature-event",
-/* acks */ "note-head-interface rest-interface",
-/* reads */ "",
-/* write */ "");
+ADD_ACKNOWLEDGER (Mensural_ligature_engraver, rest);
+ADD_ACKNOWLEDGER (Mensural_ligature_engraver, note_head);
+
+ADD_TRANSLATOR (Mensural_ligature_engraver,
+ /* doc */
+ "Handle @code{Mensural_ligature_events} by glueing special"
+ " ligature heads together.",
+
+ /* create */
+ "MensuralLigature ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );