/*
- spacing-spanner.cc -- implement Spacing_spanner
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1999--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "spacing-spanner.hh"
#include <math.h>
#include <cstdio>
-using namespace std;
-
#include "spacing-options.hh"
#include "international.hh"
#include "main.hh"
#include "paper-column.hh"
#include "paper-score.hh"
#include "pointer-group-interface.hh"
+#include "separation-item.hh"
+#include "skyline-pair.hh"
#include "spaceable-grob.hh"
#include "spacing-interface.hh"
#include "staff-spacing.hh"
#include "system.hh"
#include "warn.hh"
-vector<Grob*>
+vector<Grob *>
Spacing_spanner::get_columns (Grob *me_grob)
{
- Spanner *me = dynamic_cast<Spanner*> (me_grob);
- vector<Grob*> all (get_root_system (me)->used_columns ());
- vsize start = binary_search (all, (Grob*)me->get_bound (LEFT),
- &Paper_column::less_than);
- vsize end = binary_search (all, (Grob*) me->get_bound (RIGHT),
- &Paper_column::less_than);
-
- all = vector<Grob*>::vector<Grob*> (all.begin () + start,
- all.begin () + end + 1);
+ Spanner *me = dynamic_cast<Spanner *> (me_grob);
+ vector<Grob *> all (get_root_system (me)->used_columns ());
+ vsize start = binary_search (all, (Grob *)me->get_bound (LEFT),
+ &Paper_column::less_than);
+ vsize end = binary_search (all, (Grob *) me->get_bound (RIGHT),
+ &Paper_column::less_than);
+
+ all = vector<Grob *> (all.begin () + start,
+ all.begin () + end + 1);
return all;
}
*/
Spacing_options options;
options.init_from_grob (me);
- vector<Grob*> cols = Spacing_spanner::get_columns (me);
+ vector<Grob *> cols = Spacing_spanner::get_columns (me);
set_explicit_neighbor_columns (cols);
prune_loose_columns (me, &cols, &options);
*/
MAKE_SCHEME_CALLBACK (Spacing_spanner, calc_common_shortest_duration, 1);
-SCM
+SCM
Spacing_spanner::calc_common_shortest_duration (SCM grob)
{
Spanner *me = unsmob_spanner (grob);
- vector<Grob*> cols (get_columns (me));
-
+ vector<Grob *> cols (get_columns (me));
+
/*
ascending in duration
*/
for (vsize i = 0; i < cols.size (); i++)
{
if (Paper_column::is_musical (cols[i]))
- {
- Moment *when = unsmob_moment (cols[i]->get_property ("when"));
-
- /*
- ignore grace notes for shortest notes.
- */
- if (when && when->grace_part_)
- continue;
-
- SCM st = cols[i]->get_property ("shortest-starter-duration");
- Moment this_shortest = *unsmob_moment (st);
- assert (this_shortest.to_bool ());
- shortest_in_measure = min (shortest_in_measure, this_shortest.main_part_);
- }
+ {
+ Moment *when = unsmob_moment (cols[i]->get_property ("when"));
+
+ /*
+ ignore grace notes for shortest notes.
+ */
+ if (when && when->grace_part_)
+ continue;
+
+ SCM st = cols[i]->get_property ("shortest-starter-duration");
+ Moment this_shortest = *unsmob_moment (st);
+ assert (this_shortest.to_bool ());
+ shortest_in_measure = min (shortest_in_measure, this_shortest.main_part_);
+ }
else if (!shortest_in_measure.is_infinity ()
- && Paper_column::is_breakable (cols[i]))
- {
- vsize j = 0;
- for (; j < durations.size (); j++)
- {
- if (durations[j] > shortest_in_measure)
- {
- counts.insert (counts.begin () + j, 1);
- durations.insert (durations.begin () + j, shortest_in_measure);
- break;
- }
- else if (durations[j] == shortest_in_measure)
- {
- counts[j]++;
- break;
- }
- }
-
- if (durations.size () == j)
- {
- durations.push_back (shortest_in_measure);
- counts.push_back (1);
- }
-
- shortest_in_measure.set_infinite (1);
- }
+ && Paper_column::is_breakable (cols[i]))
+ {
+ vsize j = 0;
+ for (; j < durations.size (); j++)
+ {
+ if (durations[j] > shortest_in_measure)
+ {
+ counts.insert (counts.begin () + j, 1);
+ durations.insert (durations.begin () + j, shortest_in_measure);
+ break;
+ }
+ else if (durations[j] == shortest_in_measure)
+ {
+ counts[j]++;
+ break;
+ }
+ }
+
+ if (durations.size () == j)
+ {
+ durations.push_back (shortest_in_measure);
+ counts.push_back (1);
+ }
+
+ shortest_in_measure.set_infinite (1);
+ }
}
- int max_idx = -1;
+ vsize max_idx = VPOS;
int max_count = 0;
for (vsize i = durations.size (); i--;)
{
if (counts[i] >= max_count)
- {
- max_idx = i;
- max_count = counts[i];
- }
+ {
+ max_idx = i;
+ max_count = counts[i];
+ }
}
SCM bsd = me->get_property ("base-shortest-duration");
if (Moment *m = unsmob_moment (bsd))
d = m->main_part_;
- if (max_idx >= 0)
+ if (max_idx != VPOS)
d = min (d, durations[max_idx]);
return Moment (d).smobbed_copy ();
void
Spacing_spanner::generate_pair_spacing (Grob *me,
- Paper_column *left_col, Paper_column *right_col,
- Paper_column *after_right_col,
- Spacing_options const *options)
+ Paper_column *left_col, Paper_column *right_col,
+ Paper_column *after_right_col,
+ Spacing_options const *options)
{
if (Paper_column::is_musical (left_col))
{
if (!Paper_column::is_musical (right_col)
- && options->float_nonmusical_columns_
- && after_right_col
- && Paper_column::is_musical (after_right_col))
- {
- /*
- TODO: should generate rods to prevent collisions.
- */
- musical_column_spacing (me, left_col, after_right_col, options);
- right_col->set_object ("between-cols", scm_cons (left_col->self_scm (),
- after_right_col->self_scm ()));
- }
+ && (options->float_nonmusical_columns_ || to_boolean (right_col->get_property ("maybe-loose")))
+ && after_right_col
+ && Paper_column::is_musical (after_right_col))
+ {
+ /*
+ TODO: should generate rods to prevent collisions.
+ */
+ musical_column_spacing (me, left_col, after_right_col, options);
+ right_col->set_object ("between-cols", scm_cons (left_col->self_scm (),
+ after_right_col->self_scm ()));
+ }
else
- musical_column_spacing (me, left_col, right_col, options);
+ musical_column_spacing (me, left_col, right_col, options);
if (Item *rb = right_col->find_prebroken_piece (LEFT))
- musical_column_spacing (me, left_col, rb, options);
+ musical_column_spacing (me, left_col, rb, options);
}
else
{
/*
- The case that the right part is broken as well is rather
- rare, but it is possible, eg. with a single empty measure,
- or if one staff finishes a tad earlier than the rest.
+ The case that the right part is broken as well is rather
+ rare, but it is possible, eg. with a single empty measure,
+ or if one staff finishes a tad earlier than the rest.
*/
Item *lb = left_col->find_prebroken_piece (RIGHT);
Item *rb = right_col->find_prebroken_piece (LEFT);
if (left_col && right_col)
- breakable_column_spacing (me, left_col, right_col, options);
+ breakable_column_spacing (me, left_col, right_col, options);
if (lb && right_col)
- breakable_column_spacing (me, lb, right_col, options);
+ breakable_column_spacing (me, lb, right_col, options);
if (left_col && rb)
- breakable_column_spacing (me, left_col, rb, options);
+ breakable_column_spacing (me, left_col, rb, options);
if (lb && rb)
- breakable_column_spacing (me, lb, rb, options);
+ breakable_column_spacing (me, lb, rb, options);
+ }
+}
+
+static void
+set_column_rods (vector<Grob *> const &cols, Real padding)
+{
+ /* distances[i] will be the distance betwen cols[i-1] and cols[i], and
+ overhangs[j] the amount by which cols[0 thru j] extend beyond cols[j]
+ when each column is placed as far to the left as possible. */
+ vector<Real> distances (cols.size ());
+ vector<Real> overhangs (cols.size ());
+
+ for (vsize i = 0; i < cols.size (); i++)
+ {
+ Item *r = dynamic_cast<Item *> (cols[i]);
+ Item *rb = r->find_prebroken_piece (LEFT);
+
+ if (Separation_item::is_empty (r) && (!rb || Separation_item::is_empty (rb)))
+ continue;
+
+ Skyline_pair *skys = Skyline_pair::unsmob (r->get_property ("horizontal-skylines"));
+ overhangs[i] = skys ? (*skys)[RIGHT].max_height () : 0.0;
+
+ if (0 == i) continue;
+
+ /* min rather than max because stickout will be negative if the right-hand column
+ sticks out a lot to the left */
+ Real stickout = min (skys ? (*skys)[LEFT].max_height () : 0.0,
+ Separation_item::conditional_skyline (r, cols[i - 1]).max_height ());
+
+ Real prev_distances = 0.0;
+
+ /* This is an inner loop and hence it is potentially quadratic. However, we only continue
+ as long as there is a rod to insert. Therefore, this loop will usually only execute
+ a constant number of times per iteration of the outer loop. */
+ for (vsize j = i; j--;)
+ {
+ if (overhangs[j] + padding <= prev_distances + distances[i] + stickout)
+ break; // cols[0 thru j] cannot reach cols[i]
+
+ Item *l = dynamic_cast<Item *> (cols[j]);
+ Item *lb = l->find_prebroken_piece (RIGHT);
+
+ Real dist = Separation_item::set_distance (l, r, padding);
+ distances[i] = max (distances[i], dist - prev_distances);
+
+ if (lb)
+ {
+ dist = Separation_item::set_distance (lb, r, padding);
+ // The left-broken version might reach more columns to the
+ // right than the unbroken version, by extending farther and/or
+ // nesting more closely;
+ if (j == i - 1) // check this, the first time we see each lb.
+ overhangs[j] = max (overhangs[j],
+ lb->extent (lb, X_AXIS)[RIGHT]
+ + distances[i] - dist);
+ }
+ if (rb)
+ Separation_item::set_distance (l, rb, padding);
+ if (lb && rb)
+ Separation_item::set_distance (lb, rb, padding);
+
+ prev_distances += distances[j];
+ }
+ overhangs[i] = max (overhangs[i],
+ overhangs[i - 1] - distances[i]);
}
}
void
Spacing_spanner::generate_springs (Grob *me,
- vector<Grob*> const &cols,
- Spacing_options const *options)
+ vector<Grob *> const &cols,
+ Spacing_options const *options)
{
- Paper_column *prev = 0;
- for (vsize i = 0; i < cols.size (); i++)
+ Paper_column *prev = dynamic_cast<Paper_column *> (cols[0]);
+ for (vsize i = 1; i < cols.size (); i++)
{
Paper_column *col = dynamic_cast<Paper_column *> (cols[i]);
- Paper_column *next = (i + 1 < cols.size ()) ? dynamic_cast<Paper_column *> (cols[i+1]) : 0;
-
- if (i > 0)
- generate_pair_spacing (me, prev, col, next, options);
+ Paper_column *next = (i + 1 < cols.size ()) ? dynamic_cast<Paper_column *> (cols[i + 1]) : 0;
+
+ generate_pair_spacing (me, prev, col, next, options);
prev = col;
}
+
+ Real padding = robust_scm2double (prev->get_property ("padding"), 0.1);
+ set_column_rods (cols, padding);
}
/*
*/
void
Spacing_spanner::musical_column_spacing (Grob *me,
- Item *left_col,
- Item *right_col,
- Spacing_options const *options)
+ Item *left_col,
+ Item *right_col,
+ Spacing_options const *options)
{
Real base_note_space = note_spacing (me, left_col, right_col, options);
-
- Real max_fixed = 0;
- Real max_space = 0;
- Real compound_note_space = 0.0;
- Real compound_fixed_note_space = 0.0;
+ Spring spring;
if (options->stretch_uniformly_)
- {
- compound_note_space = base_note_space;
-
- if (!Paper_column::is_musical (right_col))
- {
- /*
- Crude fix for notes that lead up to barlines and time sigs.
- */
- Interval lext = right_col->extent (right_col, X_AXIS);
- if (!lext.is_empty ())
- compound_note_space += -lext[LEFT];
- }
- }
+ spring = Spring (base_note_space, 0.0);
else
{
- int wish_count = 0;
-
- extract_grob_set (left_col, "right-neighbors", neighbors);
+ vector<Spring> springs;
+ extract_grob_set (left_col, "spacing-wishes", wishes);
- /*
- We adjust the space following a note only if the next note
- happens after the current note (this is set in the grob
- property SPACING-SEQUENCE.
- */
- for (vsize i = 0; i < neighbors.size (); i++)
- {
- Grob *wish = neighbors[i];
-
- Item *wish_rcol = Note_spacing::right_column (wish);
- if (Note_spacing::left_column (wish) != left_col
- || (wish_rcol != right_col && wish_rcol != right_col->original ()))
- continue;
-
- /*
- This is probably a waste of time in the case of polyphonic
- music. */
- if (Note_spacing::has_interface (wish))
- {
- Real space = 0.0;
- Real fixed = 0.0;
-
- Note_spacing::get_spacing (wish, right_col, base_note_space, options->increment_, &space, &fixed);
-
-
- max_space = max (max_space, space);
- max_fixed = max (max_fixed, fixed);
-
- compound_note_space += space;
- compound_fixed_note_space += fixed;
- wish_count++;
- }
- }
-
- if (Paper_column::when_mom (right_col).grace_part_
- && !Paper_column::when_mom (left_col).grace_part_)
- {
- /*
- Ugh. 0.8 is arbitrary.
- */
- compound_note_space *= 0.8;
- }
-
- if (compound_note_space < 0 || wish_count == 0)
- {
-
- if (!Paper_column::is_musical (right_col))
- {
- /*
- There used to be code that examined left_col->extent
- (X_AXIS), but this is resulted in unexpected wide
- spacing, because the width of s^"text" output is also
- taken into account here.
- */
- compound_fixed_note_space = options->increment_;
- compound_note_space = max (base_note_space,
- options->increment_);
- }
- else
- {
- /*
- Fixed should be 0.0. If there are no spacing wishes, we're
- likely dealing with polyphonic spacing of hemiolas.
-
- We used to have compound_fixed_note_space = options->increment_
-
- but this can lead to numeric instability problems when we
- do
-
- inverse_strength = (compound_note_space - compound_fixed_note_space)
-
- */
-
- compound_note_space = base_note_space;
- compound_fixed_note_space = 0.0;
- }
- }
- else if (to_boolean (me->get_property ("average-spacing-wishes")))
- {
- compound_note_space /= wish_count;
- compound_fixed_note_space /= wish_count;
- }
+ for (vsize i = 0; i < wishes.size (); i++)
+ {
+ Grob *wish = wishes[i];
+ if (Spacing_interface::left_column (wish) != left_col)
+ {
+ /* This shouldn't really happen, but the ancient music
+ stuff really messes up the spacing code, grrr
+ */
+ continue;
+ }
+
+ extract_grob_set (wish, "right-items", right_items);
+ bool found_matching_column = false;
+ for (vsize j = 0; j < right_items.size (); j++)
+ {
+ Item *it = dynamic_cast<Item *> (right_items[j]);
+ if (it && (right_col == it->get_column ()
+ || right_col->original () == it->get_column ()))
+ found_matching_column = true;
+ }
+
+ /*
+ This is probably a waste of time in the case of polyphonic
+ music. */
+ if (found_matching_column && Note_spacing::has_interface (wish))
+ {
+ Real inc = options->increment_;
+ Grob *gsp = unsmob_grob (left_col->get_object ("grace-spacing"));
+ if (gsp && Paper_column::when_mom (left_col).grace_part_)
+ {
+ Spacing_options grace_opts;
+ grace_opts.init_from_grob (gsp);
+ inc = grace_opts.increment_;
+ }
+ springs.push_back (Note_spacing::get_spacing (wish, right_col, base_note_space, inc));
+ }
+ }
+
+ if (springs.empty ())
+ {
+
+ if (!Paper_column::is_musical (right_col))
+ {
+ /*
+ There used to be code that examined left_col->extent
+ (X_AXIS), but this is resulted in unexpected wide
+ spacing, because the width of s^"text" output is also
+ taken into account here.
+ */
+ spring = Spring (max (base_note_space, options->increment_),
+ options->increment_);
+ }
+ else
+ {
+ /*
+ Min distance should be 0.0. If there are no spacing
+ wishes, we're probably dealing with polyphonic spacing
+ of hemiolas.
+ */
+ spring = Spring (base_note_space, 0.0);
+ }
+ }
else
- {
- compound_fixed_note_space = max_fixed;
- compound_note_space = max_space;
- }
+ spring = merge_springs (springs);
+ }
+ if (Paper_column::when_mom (right_col).grace_part_
+ && !Paper_column::when_mom (left_col).grace_part_)
+ {
/*
- Whatever we do, the fixed space is smaller than the real
- space.
-
- TODO: this criterion is discontinuous in the derivative.
- Maybe it should be continuous?
+ Ugh. 0.8 is arbitrary.
*/
- compound_fixed_note_space = min (compound_fixed_note_space,
- compound_note_space);
+ spring *= 0.8;
}
- Real inverse_strength = 1.0;
- Real distance = 1.0;
-
/*
TODO: make sure that the space doesn't exceed the right margin.
*/
if (options->packed_)
{
/*
- In packed mode, pack notes as tight as possible. This makes
- sense mostly in combination with raggedright mode: the notes
- are then printed at minimum distance. This is mostly useful
- for ancient notation, but may also be useful for some flavours
- of contemporary music. If not in raggedright mode, lily will
- pack as much bars of music as possible into a line, but the
- line will then be stretched to fill the whole linewidth.
+ In packed mode, pack notes as tight as possible. This makes
+ sense mostly in combination with ragged-right mode: the notes
+ are then printed at minimum distance. This is mostly useful
+ for ancient notation, but may also be useful for some flavours
+ of contemporary music. If not in ragged-right mode, lily will
+ pack as many bars of music as possible into a line, but the
+ line will then be stretched to fill the whole linewidth.
+
+ Note that we don't actually pack things as tightly as possible:
+ we don't allow the next column to begin before this one ends.
*/
- inverse_strength = 1.0;
- distance = compound_fixed_note_space;
- }
- else
- {
- inverse_strength = (compound_note_space - compound_fixed_note_space);
- distance = compound_note_space;
+ /* FIXME: the else clause below is the "right" thing to do,
+ but we can't do it because of all the empty columns that the
+ ligature-engravers leave lying around. In that case, the extent of
+ the column is incorrect because it includes note-heads that aren't
+ there. We get around this by only including the column extent if
+ the left-hand column is "genuine". This is a dirty hack and it
+ should be fixed in the ligature-engravers. --jneem
+ */
+ if (Paper_column::is_extraneous_column_from_ligature (left_col))
+ spring.set_distance (spring.min_distance ());
+ else
+ spring.set_distance (max (left_col->extent (left_col, X_AXIS)[RIGHT],
+ spring.min_distance ()));
+
+ spring.set_inverse_stretch_strength (1.0);
}
- Spaceable_grob::add_spring (left_col, right_col, distance, inverse_strength);
+ Spaceable_grob::add_spring (left_col, right_col, spring);
}
/*
|| !Paper_column::is_musical (col)
|| !Paper_column::is_used (next))
return false;
-
- Moment dt =
- Paper_column::when_mom (next) - Paper_column::when_mom (col);
-
+
+ Moment dt
+ = Paper_column::when_mom (next) - Paper_column::when_mom (col);
+
Moment *len = unsmob_moment (left->get_property ("measure-length"));
if (!len)
return false;
-
+
/*
Don't check for exact measure length, since ending measures are
often shortened due to pickups.
*/
if (dt.main_part_ > len->main_part_ / Rational (2)
&& (next->is_broken ()
- || next->break_status_dir ()))
+ || next->break_status_dir ()))
return true;
return false;
*/
void
Spacing_spanner::breakable_column_spacing (Grob *me, Item *l, Item *r,
- Spacing_options const *options)
+ Spacing_options const *options)
{
- Real compound_fixed = 0.0;
- Real compound_space = 0.0;
- Real max_fixed = 0.0;
- Real max_space = 0.0;
-
- int wish_count = 0;
+ vector<Spring> springs;
+ Spring spring;
+
+ Real full_measure_space = 0.0;
+ if (Paper_column::is_musical (r)
+ && l->break_status_dir () == CENTER
+ && fills_measure (me, l, r))
+ full_measure_space = robust_scm2double (l->get_property ("full-measure-extra-space"), 1.0);
Moment dt = Paper_column::when_mom (r) - Paper_column::when_mom (l);
extract_grob_set (l, "spacing-wishes", wishes);
for (vsize i = 0; i < wishes.size (); i++)
- {
- Item *spacing_grob = dynamic_cast<Item *> (wishes[i]);
-
- if (!spacing_grob || !Staff_spacing::has_interface (spacing_grob))
- continue;
-
- Real space = 0.;
- Real fixed_space = 0.;
-
- /*
- column for the left one settings should be ok due automatic
- pointer munging.
- */
- assert (spacing_grob->get_column () == l);
-
- Staff_spacing::get_spacing_params (spacing_grob,
- &space, &fixed_space);
-
- if (Paper_column::when_mom (r).grace_part_)
- {
- /*
- Correct for grace notes.
-
- Ugh. The 0.8 is arbitrary.
- */
- space *= 0.8;
- }
-
- max_space = max (max_space, space);
- max_fixed = max (max_fixed, fixed_space);
-
- compound_space += space;
- compound_fixed += fixed_space;
- wish_count++;
- }
- }
+ {
+ Item *spacing_grob = dynamic_cast<Item *> (wishes[i]);
- if (compound_space <= 0.0 || !wish_count)
- {
- standard_breakable_column_spacing (me, l, r, &compound_fixed, &compound_space,
- options);
- wish_count = 1;
+ if (!spacing_grob || !Staff_spacing::has_interface (spacing_grob))
+ continue;
+
+ /*
+ column for the left one settings should be ok due automatic
+ pointer munging.
+ */
+ assert (spacing_grob->get_column () == l);
+
+ springs.push_back (Staff_spacing::get_spacing (spacing_grob, r,
+ full_measure_space));
+ }
}
+
+ if (springs.empty ())
+ spring = standard_breakable_column_spacing (me, l, r, options);
else
+ spring = merge_springs (springs);
+
+ if (Paper_column::when_mom (r).grace_part_)
{
- if (to_boolean (me->get_property ("average-spacing-wishes")))
- {
- compound_space /= wish_count;
- compound_fixed /= wish_count;
- }
- else
- {
- compound_fixed = max_fixed;
- compound_space = max_space;
- }
-
+ /*
+ Correct for grace notes.
+
+ Ugh. The 0.8 is arbitrary.
+ */
+ spring *= 0.8;
}
- if (Paper_column::is_musical (r)
- && l->break_status_dir () == CENTER
- && fills_measure (me, l, r))
+ if (options->stretch_uniformly_ && l->break_status_dir () != RIGHT)
{
- compound_space += 1.0;
+ spring.set_min_distance (0.0);
+ spring.set_default_strength ();
}
-
- if (options->stretch_uniformly_ && l->break_status_dir () != RIGHT)
- compound_fixed = 0.0;
-
- assert (!isinf (compound_space));
- compound_space = max (compound_space, compound_fixed);
- Real inverse_strength = (compound_space - compound_fixed);
- Real distance = compound_space;
- Spaceable_grob::add_spring (l, r, distance, inverse_strength);
+ Spaceable_grob::add_spring (l, r, spring);
}
ADD_INTERFACE (Spacing_spanner,
- "The space taken by a note is dependent on its duration. Doubling a\n"
- "duration adds spacing-increment to the space. The most common shortest\n"
- "note gets @code{shortest-duration-space}. Notes that are even shorter are\n"
- "spaced proportonial to their duration.\n"
- "\n"
- "Typically, the increment is the width of a black note head. In a\n"
- "piece with lots of 8th notes, and some 16th notes, the eighth note\n"
- "gets 2 note heads width (i.e. the space following a note is 1 note\n"
- "head width) A 16th note is followed by 0.5 note head width. The\n"
- "quarter note is followed by 3 NHW, the half by 4 NHW, etc.\n",
-
-
- "average-spacing-wishes "
- "base-shortest-duration "
- "common-shortest-duration "
- "packed-spacing "
- "shortest-duration-space "
- "spacing-increment "
- "strict-grace-spacing "
- "strict-note-spacing "
- "uniform-stretching "
-
- );
+ "The space taken by a note is dependent on its duration."
+ " Doubling a duration adds @code{spacing-increment} to the"
+ " space. The most common shortest note gets"
+ " @code{shortest-duration-space}. Notes that are even shorter"
+ " are spaced proportonial to their duration.\n"
+ "\n"
+ "Typically, the increment is the width of a black note head."
+ " In a piece with lots of 8th notes, and some 16th notes, the"
+ " eighth note gets a 2@tie{}note heads width (i.e., the space"
+ " following a note is a 1@tie{}note head width). A 16th note"
+ " is followed by 0.5 note head width. The quarter note is"
+ " followed by 3@tie{}NHW, the half by 4@tie{}NHW, etc.",
+
+ /* properties */
+ "average-spacing-wishes "
+ "base-shortest-duration "
+ "common-shortest-duration "
+ "packed-spacing "
+ "shortest-duration-space "
+ "spacing-increment "
+ "strict-grace-spacing "
+ "strict-note-spacing "
+ "uniform-stretching "
+ );
projects / lilypond.git / blobdiff