/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2014 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
Grob *head_up = Note_column::first_head (clash_up);
Grob *head_down = Note_column::first_head (clash_down);
- vector<int> ups = Stem::note_head_positions (Note_column::get_stem (clash_up));
- vector<int> dps = Stem::note_head_positions (Note_column::get_stem (clash_down));
+ Interval extent_up = head_up->extent (head_up, X_AXIS);
+ Interval extent_down = head_down->extent (head_down, X_AXIS);
+
+ /* Staff-positions of all noteheads on each stem */
+ vector<int> ups = Stem::note_head_positions (stems[UP]);
+ vector<int> dps = Stem::note_head_positions (stems[DOWN]);
/* Too far apart to collide. */
if (ups[0] > dps.back () + 1)
return;
+ /* If the chords just 'touch' their extreme noteheads,
+ then we can align their stems.
+ */
+ bool touch = false;
+ if (ups[0] >= dps.back ()
+ && (dps.size () < 2 || ups[0] >= dps[dps.size () - 2] + 2)
+ && (ups.size () < 2 || ups[1] >= dps.back () + 2))
+ touch = true;
+
+ /* Filter out the 'o's in this configuration, since they're no
+ * part in the collision.
+ *
+ * |
+ * x|o
+ * x|o
+ * x
+ *
+ */
+ ups = Stem::note_head_positions (stems[UP], true);
+ dps = Stem::note_head_positions (stems[DOWN], true);
+
/* Merge heads if the notes lie the same line, or if the "stem-up-note" is
above the "stem-down-note". */
bool merge_possible = (ups[0] >= dps[0]) && (ups.back () >= dps.back ());
merge_possible = false;
/*
- this case (distant half collide),
-
- |
- x |
- | x
- |
-
- the noteheads may be closer than this case (close half collide)
-
- |
- |
- x
- x
- |
- |
-
- */
-
- /* TODO: filter out the 'o's in this configuration, since they're no
- part in the collision.
-
- |
- x|o
- x|o
- x
-
- */
+ * this case (distant half collide),
+ *
+ * |
+ * x |
+ * | x
+ * |
+ *
+ * the noteheads may be closer than this case (close half collide)
+ *
+ * |
+ * |
+ * x
+ * x
+ * |
+ * |
+ *
+ */
bool close_half_collide = false;
bool distant_half_collide = false;
}
full_collide = full_collide || (close_half_collide
- && distant_half_collide);
-
- Real shift_amount = 1;
-
- bool touch = (ups[0] >= dps.back ());
- /* As a special case, if the topmost part of the downstem chord is a second,
- the top note of which is the same pitch as the lowest upstem note, they
- shouldn't count as touching.
+ && distant_half_collide)
+ || ( distant_half_collide // like full_ for wholes and longer
+ && (up_ball_type <= 0 || down_ball_type <= 0));
+
+ /* Determine which chord goes on the left, and which goes right.
+ Up-stem usually goes on the right, but if chords just 'touch' we can put
+ both stems on a common vertical line. In the presense of collisions,
+ right hand heads may obscure dots, so dotted heads to go the right.
*/
- if (dps.back () == ups[0] && dps.size () > 1 && dps[dps.size () - 2] == ups[0] - 1)
- touch = false;
-
- if (touch)
- shift_amount *= -1;
-
- /* For full collisions, the right hand head may obscure dots, so
- make sure the dotted heads go to the right. */
+ Real shift_amount = 1;
bool stem_to_stem = false;
- if (full_collide)
+ if ((full_collide
+ || ((close_half_collide || distant_half_collide)
+ && to_boolean (me->get_property ("prefer-dotted-right"))))
+ && Rhythmic_head::dot_count (head_up) < Rhythmic_head::dot_count (head_down))
{
- if (Rhythmic_head::dot_count (head_up) > Rhythmic_head::dot_count (head_down))
- shift_amount = 1;
- else if (Rhythmic_head::dot_count (head_up) < Rhythmic_head::dot_count (head_down))
+ shift_amount = -1;
+ if (!touch)
+ // remember to leave clearance between stems
stem_to_stem = true;
}
+ else if (touch)
+ {
+ // Up-stem note on a line has a raised dot, so no risk of collision
+ Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
+ if ((full_collide
+ || (!Staff_symbol_referencer::on_line (staff, ups[0])
+ && to_boolean (me->get_property ("prefer-dotted-right"))))
+ && Rhythmic_head::dot_count (head_up) > Rhythmic_head::dot_count (head_down))
+ touch = false;
+ else
+ shift_amount = -1;
+ }
/* The solfa is a triangle, which is inverted depending on stem
direction. In case of a collision, one of them should be removed,
&& (up_style == ly_symbol2scm ("fa") || up_style == ly_symbol2scm ("faThin"))
&& (down_style == ly_symbol2scm ("fa") || down_style == ly_symbol2scm ("faThin")))
{
- Interval uphead_size = head_up->extent (head_up, Y_AXIS);
Offset att = Offset (0.0, -1.0);
head_up->set_property ("stem-attachment", ly_offset2scm (att));
head_up->set_property ("transparent", SCM_BOOL_T);
/* If possible, don't wipe any heads. Else, wipe shortest head,
or head with smallest amount of dots. Note: when merging
- different heads, dots on the smaller one disappear. */
+ different heads, dots on the smaller one disappear; and when
+ merging identical heads, dots on the down-stem head disappear */
Grob *wipe_ball = 0;
Grob *dot_wipe_head = head_up;
wipe_ball = head_up;
}
else
- dot_wipe_head = head_up;
+ dot_wipe_head = head_down;
}
else if (down_ball_type > up_ball_type)
{
*/
if (Stem::duration_log (stems[DOWN]) == 1
&& Stem::duration_log (stems[UP]) >= 3)
- shift_amount = (1 - head_up->extent (head_up, X_AXIS).length ()
- / head_down->extent (head_down, X_AXIS).length ()) * 0.5;
+ shift_amount = (1 - extent_up[RIGHT] / extent_down[RIGHT]) * 0.5;
}
if (dot_wipe_head)
{
- if (Grob *d = unsmob_grob (dot_wipe_head->get_object ("dot")))
+ if (Grob *d = Grob::unsmob (dot_wipe_head->get_object ("dot")))
d->suicide ();
}
/* TODO: these numbers are magic; should devise a set of grob props
to tune this behavior. */
else if (stem_to_stem)
- shift_amount = -abs (shift_amount) * 0.65;
- else if (close_half_collide && !touch)
+ shift_amount *= 0.65;
+ else if (touch)
+ shift_amount *= 0.5;
+ else if (close_half_collide)
shift_amount *= 0.52;
- else if (distant_half_collide && !touch)
- shift_amount *= 0.4;
- else if (distant_half_collide || close_half_collide || full_collide)
+ else if (full_collide)
shift_amount *= 0.5;
+ else if (distant_half_collide)
+ shift_amount *= 0.4;
/* we're meshing. */
else if (Rhythmic_head::dot_count (head_up) || Rhythmic_head::dot_count (head_down))
else
shift_amount *= 0.17;
- /*
- */
- if (full_collide
- && down_ball_type *up_ball_type == 0)
+ /* The offsets computed in this routine are multiplied,
+ in calc_positioning_done(), by the width of the downstem note.
+ The shift required to clear collisions, however, depends on the extents
+ of the note heads on the sides that interfere. */
+ if (shift_amount < 0.0) // Down-stem shifts right.
+ shift_amount *= (extent_up[RIGHT] - extent_down[LEFT]) / extent_down.length ();
+ else // Up-stem shifts right.
+ shift_amount *= (extent_down[RIGHT] - extent_up[LEFT]) / extent_down.length ();
+
+ /* If any dotted notes ended up on the left,
+ tell the Dot_Columnn to avoid the note heads on the right.
+ */
+ if (shift_amount < -1e-6
+ && Rhythmic_head::dot_count (head_up))
{
- if (up_ball_type == 0 && down_ball_type == 1)
- shift_amount *= 1.25;
- else if (up_ball_type == 0 && down_ball_type == 2)
- shift_amount *= 1.35;
- else if (down_ball_type == 0 && up_ball_type == 1)
- shift_amount *= 0.7;
- else if (down_ball_type == 0 && up_ball_type == 2)
- shift_amount *= 0.75;
+ Grob *d = Grob::unsmob (head_up->get_object ("dot"));
+ Grob *parent = d->get_parent (X_AXIS);
+ if (Dot_column::has_interface (parent))
+ Side_position_interface::add_support (parent, head_down);
}
-
- /*
- * Fix issue #44:
- *
- * Dots from left note head collide with right note head. Only occurs
- * with a close half collide, if the left note head is between
- * lines and the right note head is on a line, and if right note head
- * hasn't got any dots.
- */
- if (close_half_collide
- && Rhythmic_head::dot_count (head_up)
- && !Rhythmic_head::dot_count (head_down))
+ else if (Rhythmic_head::dot_count (head_down))
{
- Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
- if (!Staff_symbol_referencer::on_line (staff, ups[0]))
+ Grob *d = Grob::unsmob (head_down->get_object ("dot"));
+ Grob *parent = d->get_parent (X_AXIS);
+ if (Dot_column::has_interface (parent))
{
- /*
- TODO: consider junking the else body.
- */
- if (to_boolean (me->get_property ("prefer-dotted-right")))
- shift_amount = 0.5;
- else
- {
- Grob *d = unsmob_grob (head_up->get_object ("dot"));
- Grob *parent = d->get_parent (X_AXIS);
- if (Dot_column::has_interface (parent))
- Side_position_interface::add_support (parent, head_down);
- }
+ Grob *stem = Grob::unsmob (head_up->get_object ("stem"));
+ // Loop over all heads on an up-pointing-stem to see if dots
+ // need to clear any heads suspended on its right side.
+ extract_grob_set (stem, "note-heads", heads);
+ for (vsize i = 0; i < heads.size (); i++)
+ Side_position_interface::add_support (parent, heads[i]);
}
}
- /* For full or close half collisions, the right hand head may
- obscure dots. Move dots to the right. */
- if (abs (shift_amount) > 1e-6
- && Rhythmic_head::dot_count (head_down) > Rhythmic_head::dot_count (head_up)
- && (full_collide || close_half_collide))
+ // In meshed chords with dots on the left, adjust dot direction
+ if (shift_amount > 1e-6
+ && Rhythmic_head::dot_count (head_down))
{
- Grob *d = unsmob_grob (head_down->get_object ("dot"));
- Grob *parent = d->get_parent (X_AXIS);
-
- /*
- FIXME:
-
- |
- x . o
- |
-
-
- the . is put right of o which is erroneous o force-shifted
- far to the right.
- */
- if (Dot_column::has_interface (parent))
+ Grob *dot_down = Grob::unsmob (head_down->get_object ("dot"));
+ Grob *col_down = dot_down->get_parent (X_AXIS);
+ Direction dir = UP;
+ if (Rhythmic_head::dot_count (head_up))
{
- Grob *stem = unsmob_grob (head_up->get_object ("stem"));
+ Grob *dot_up = Grob::unsmob (head_up->get_object ("dot"));
+ Grob *col_up = dot_up->get_parent (X_AXIS);
+ if (col_up == col_down) // let the common DotColumn arrange dots
+ dir = CENTER;
+ else // conform to the dot direction on the up-stem chord
+ dir = robust_scm2dir (dot_up->get_property ("direction"), UP);
+ }
+ if (dir != CENTER)
+ {
+ Grob *stem = Grob::unsmob (head_down->get_object ("stem"));
extract_grob_set (stem, "note-heads", heads);
for (vsize i = 0; i < heads.size (); i++)
- Side_position_interface::add_support (parent, heads[i]);
+ if (Grob *dot = Grob::unsmob (heads[i]->get_object ("dot")))
+ dot->set_property ("direction", scm_from_int (dir));
}
}
- Direction d = UP;
- do
+ for (UP_and_DOWN (d))
{
for (vsize i = 0; i < clash_groups[d].size (); i++)
(*offsets)[d][i] += d * shift_amount;
}
- while ((flip (&d)) != UP);
}
MAKE_SCHEME_CALLBACK (Note_collision_interface, calc_positioning_done, 1)
SCM
Note_collision_interface::calc_positioning_done (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
me->set_property ("positioning-done", SCM_BOOL_T);
Drul_array<vector<Grob *> > clash_groups = get_clash_groups (me);
- Direction d = UP;
- do
+ for (UP_and_DOWN (d))
{
for (vsize i = clash_groups[d].size (); i--;)
{
clash_groups[d][i]->extent (me, X_AXIS);
}
}
- while (flip (&d) != UP);
SCM autos (automatic_shift (me, clash_groups));
SCM hand (forced_shift (me));
Real wid = 0.0;
- do
+ for (UP_and_DOWN (d))
{
if (clash_groups[d].size ())
{
wid = fh->extent (h, X_AXIS).length ();
}
}
- while (flip (&d) != UP);
vector<Grob *> done;
Real left_most = 1e6;
vector<Real> amounts;
for (; scm_is_pair (hand); hand = scm_cdr (hand))
{
- Grob *s = unsmob_grob (scm_caar (hand));
+ Grob *s = Grob::unsmob (scm_caar (hand));
Real amount = scm_to_double (scm_cdar (hand)) * wid;
done.push_back (s);
}
for (; scm_is_pair (autos); autos = scm_cdr (autos))
{
- Grob *s = unsmob_grob (scm_caar (autos));
+ Grob *s = Grob::unsmob (scm_caar (autos));
Real amount = scm_to_double (scm_cdar (autos)) * wid;
vsize x = find (done, s) - done.begin ();
}
}
- Direction d = UP;
- do
+ for (UP_and_DOWN (d))
{
vector<Grob *> &clashes (clash_groups[d]);
vector_sort (clashes, Note_column::shift_less);
}
- while ((flip (&d)) != UP);
return clash_groups;
}
Drul_array < vector<int> > shifts;
SCM tups = SCM_EOL;
- Direction d = UP;
- do
+ for (UP_and_DOWN (d))
{
vector<int> &shift (shifts[d]);
vector<Grob *> &clashes (clash_groups[d]);
}
}
}
- while ((flip (&d)) != UP);
Drul_array<vector<Slice> > extents;
Drul_array<vector<Real> > offsets;
- d = UP;
- do
+ for (UP_and_DOWN (d))
{
for (vsize i = 0; i < clash_groups[d].size (); i++)
{
offsets[d].push_back (d * 0.5 * i);
}
}
- while ((flip (&d)) != UP);
/*
- do horizontal shifts of each direction
-
- |
- x||
- x||
- x|
+ * do horizontal shifts of each direction
+ *
+ * |
+ * x||
+ * x||
+ * x|
*/
- do
+ for (UP_and_DOWN (d))
{
for (vsize i = 1; i < clash_groups[d].size (); i++)
{
offsets[d][j] += d * 0.5;
}
}
- while ((flip (&d)) != UP);
/*
see input/regression/dot-up-voice-collision.ly
check_meshing_chords (me, &offsets, extents, clash_groups);
- do
+ for (UP_and_DOWN (d))
{
for (vsize i = 0; i < clash_groups[d].size (); i++)
tups = scm_cons (scm_cons (clash_groups[d][i]->self_scm (),
scm_from_double (offsets[d][i])),
tups);
}
- while (flip (&d) != UP);
return tups;
}
Axis_group_interface::add_element (me, ncol);
}
+vector<int>
+Note_collision_interface::note_head_positions (Grob *me)
+{
+ vector<int> out;
+ extract_grob_set (me, "elements", elts);
+ for (vsize i = 0; i < elts.size (); i++)
+ if (Grob *stem = Grob::unsmob (elts[i]->get_object ("stem")))
+ {
+ vector<int> nhp = Stem::note_head_positions (stem);
+ out.insert (out.end (), nhp.begin (), nhp.end ());
+ }
+
+ vector_sort (out, less<int> ());
+ return out;
+}
+
ADD_INTERFACE (Note_collision_interface,
"An object that handles collisions between notes with"
" different stem directions and horizontal shifts. Most of"
projects / lilypond.git / blobdiff