/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2015 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
#include "stem.hh"
#include "warn.hh"
-void
+Real
check_meshing_chords (Grob *me,
- Drul_array<vector<Real> > *offsets,
- Drul_array<vector<Slice> > const &extents,
- Drul_array<vector<Grob *> > const &clash_groups)
+ Grob *clash_up, Grob *clash_down)
{
- if (!extents[UP].size () || !extents[DOWN].size ())
- return;
-
- Grob *clash_up = clash_groups[UP][0];
- Grob *clash_down = clash_groups[DOWN][0];
-
/* Every note column should have a stem, but avoid a crash. */
if (!Note_column::get_stem (clash_up) || !Note_column::get_stem (clash_down))
- return;
+ return 0.0;
Drul_array<Grob *> stems (Note_column::get_stem (clash_down),
Note_column::get_stem (clash_up));
/* Too far apart to collide. */
if (ups[0] > dps.back () + 1)
- return;
+ return 0.0;
/* If the chords just 'touch' their extreme noteheads,
then we can align their stems.
}
}
- for (UP_and_DOWN (d))
- {
- for (vsize i = 0; i < clash_groups[d].size (); i++)
- (*offsets)[d][i] += d * shift_amount;
- }
+ return shift_amount;
}
MAKE_SCHEME_CALLBACK (Note_collision_interface, calc_positioning_done, 1)
Note_collision_interface::automatic_shift (Grob *me,
Drul_array<vector<Grob *> > clash_groups)
{
- Drul_array < vector<int> > shifts;
SCM tups = SCM_EOL;
- for (UP_and_DOWN (d))
- {
- vector<int> &shift (shifts[d]);
- vector<Grob *> &clashes (clash_groups[d]);
-
- for (vsize i = 0; i < clashes.size (); i++)
- {
- SCM sh
- = clashes[i]->get_property ("horizontal-shift");
-
- if (scm_is_number (sh))
- shift.push_back (scm_to_int (sh));
- else
- shift.push_back (0);
- }
-
- for (vsize i = 1; i < shift.size (); i++)
- {
- if (shift[i - 1] == shift[i])
- {
- clashes[0]->warning (_ ("ignoring too many clashing note columns"));
- return tups;
- }
- }
- }
-
Drul_array<vector<Slice> > extents;
- Drul_array<vector<Real> > offsets;
+ Drul_array<Slice> extent_union;
+ Drul_array<vector<Grob *> > stems;
for (UP_and_DOWN (d))
{
for (vsize i = 0; i < clash_groups[d].size (); i++)
s[LEFT]--;
s[RIGHT]++;
extents[d].push_back (s);
- offsets[d].push_back (d * 0.5 * i);
+ extent_union[d].unite (s);
+ stems[d].push_back (Note_column::get_stem (clash_groups[d][i]));
}
}
+ Real inner_offset
+ = (clash_groups[UP].size () && clash_groups[DOWN].size ())
+ ? check_meshing_chords (me, clash_groups[UP][0], clash_groups[DOWN][0])
+ : 0.0;
+
/*
* do horizontal shifts of each direction
*
* x||
* x|
*/
-
+ Drul_array<vector<Real> > offsets;
for (UP_and_DOWN (d))
{
- for (vsize i = 1; i < clash_groups[d].size (); i++)
+ Real offset = inner_offset;
+ vector<int> shifts;
+ for (vsize i = 0; i < clash_groups[d].size (); i++)
{
- Slice prev = extents[d][i - 1];
- prev.intersect (extents[d][i]);
- if (prev.length () > 0
- || (extents[-d].size () && d * (extents[d][i][-d] - extents[-d][0][d]) < 0))
- for (vsize j = i; j < clash_groups[d].size (); j++)
- offsets[d][j] += d * 0.5;
+ Grob *col = clash_groups[d][i];
+ SCM sh = col->get_property ("horizontal-shift");
+ shifts.push_back (robust_scm2int (sh, 0));
+
+ if (i == 0)
+ offset = inner_offset;
+ else if (shifts[i] == shifts[i - 1])
+ {
+ // Match the previous notecolumn offset,
+ // but warn if the user did not set these equal shifts explictly
+ if (!scm_is_number (sh))
+ col->warning (_ ("ignoring too many clashing note columns"));
+ }
+ else if (extents[d][i][UP] > extents[d][i - 1][DOWN]
+ && extents[d][i][DOWN] < extents[d][i - 1][UP])
+ offset += 1.0; // fully clear the inner-voice heads
+ else
+ {
+ // check if we cross the inner voice
+ if (d * extents[d][i][-d] >= d * extents[d][i - 1][d])
+ offset += Stem::is_valid_stem (stems[d][i - 1])
+ ? 1.0 : 0.5;
+ else if (Stem::is_valid_stem (stems[d][i]))
+ offset += 0.5;
+ // check if we cross the opposite-stemmed voices
+ if (d * extents[d][i][-d] < d * extent_union[-d][d])
+ offset = max (offset, 0.5);
+ if (extents[-d].size ()
+ && extents[d][i][UP] > extents[-d][0][DOWN]
+ && extents[d][i][DOWN] < extents[-d][0][UP])
+ offset = max (offset, 1.0);
+ }
+ offsets[d].push_back (d * offset);
}
}
if (dc)
for (vsize j = i + 1; j < clash_groups[UP].size (); j++)
- {
- Grob *stem = Note_column::get_stem (clash_groups[UP][j]);
- Side_position_interface::add_support (dc, stem);
- }
+ Side_position_interface::add_support (dc, stems[UP][j]);
}
- /*
- Check if chords are meshing
- */
-
- check_meshing_chords (me, &offsets, extents, clash_groups);
-
for (UP_and_DOWN (d))
{
for (vsize i = 0; i < clash_groups[d].size (); i++)
projects / lilypond.git / blobdiff