source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
#include "debug.hh"
#include "collision.hh"
#include "note-column.hh"
#include "paper-def.hh"
#include "axis-group-interface.hh"
#include "item.hh"
+#include "stem.hh"
-void
-Collision::add_column (Score_element*me,Score_element* ncol_l)
-{
- ncol_l->add_offset_callback (force_shift_callback, X_AXIS);
- Axis_group_interface::add_element (me, ncol_l);
- me->add_dependency (ncol_l);
-}
+MAKE_SCHEME_CALLBACK (Collision,force_shift_callback,2);
-Real
-Collision::force_shift_callback (Score_element * c, Axis a)
+SCM
+Collision::force_shift_callback (SCM element_smob, SCM axis)
{
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
assert (a == X_AXIS);
- Score_element * me = c->parent_l (a);
+ me = me->parent_l (a);
/*
ugh. the way DONE is done is not clean
*/
- if (!unsmob_element (me->get_elt_property ("done")))
+ if (!unsmob_grob (me->get_grob_property ("done")))
{
- me->set_elt_property ("done", me->self_scm ());
+ me->set_grob_property ("done", me->self_scm ());
do_shifts (me);
}
- return 0.0;
+ return gh_double2scm (0.0);
}
+
+void
+check_meshing_chords (Grob*me,
+ Drul_array< Array < Real > > *offsets,
+ Drul_array< Array < Slice > > const &extents,
+ Drul_array<Link_array<Grob> > const &clash_groups)
+
+{
+ if (!extents[UP].size () || ! extents[DOWN].size ())
+ return ;
+
+
+ Grob *cu =clash_groups[UP][0];
+ Grob *cd =clash_groups[DOWN][0];
+
+ Grob * nu_l= Note_column::first_head (cu);
+ Grob * nd_l = Note_column::first_head (cd);
+
+
+
+ bool half_collide = false;
+ bool full_collide = false;
+
+ /*
+ TODO:
+
+ filter out the 'o's in this configuration, since they're no part
+ in the collision.
+
+ |
+ x|o
+ x|o
+ x
+
+
+ */
+ Array<int> ups = Stem::note_head_positions (Note_column::stem_l (cu));
+ Array<int> dps = Stem::note_head_positions (Note_column::stem_l (cd));
+
+ /*
+ they're too far apart to collide.
+
+ */
+
+ if (ups[0] > dps.top () + 1)
+ return ;
+
+ bool touch = (ups[0] - dps.top () >= 0);
+
+ bool merge_possible = (ups[0] >= dps[0]) && (ups.top () <= dps.top ());
+
+ merge_possible = merge_possible &&
+ Rhythmic_head::balltype_i (nu_l) == Rhythmic_head::balltype_i (nd_l);
+
+ if (!to_boolean (me->get_grob_property ("merge-differently-dotted")))
+ merge_possible = merge_possible && Rhythmic_head::dot_count (nu_l) == Rhythmic_head::dot_count (nd_l);
+
+ int i = 0, j=0;
+ while (i < ups.size () && j < dps.size ())
+ {
+ if (abs (ups[i] - dps[j]) == 1)
+ {
+ merge_possible = false;
+ half_collide = true;
+ }
+ else if (ups[i]==dps[j])
+ full_collide = true;
+ else if (ups[i] >dps[0] && ups[i] < dps.top ())
+ merge_possible = false;
+ else if (dps[j] >ups[0] && dps[j] < ups.top ())
+ merge_possible = false;
+
+ if (ups[i] < dps[j])
+ i++;
+ else if (ups[i] > dps[j])
+ j++;
+ else
+ {
+ i++;
+ j++;
+ }
+ }
+
+ Drul_array<Real> center_note_shifts;
+ center_note_shifts[LEFT] = 0.0;
+ center_note_shifts[RIGHT] = 0.0;
+
+
+ Real shift_amount = 1;
+
+ if ( touch)
+ shift_amount *= -1;
+ else
+ /*
+ for full collisions, the right hand head may obscure dots, so
+ make sure the dotted heads go to the right.
+ */
+ if ((Rhythmic_head::dot_count (nu_l) < Rhythmic_head::dot_count (nd_l)
+ && full_collide))
+ shift_amount *= -1;
+
+ if (merge_possible)
+ shift_amount *= 0.0;
+ else if (half_collide || full_collide)
+ shift_amount *= 0.5;
+ else
+ shift_amount *= 0.25;
+
+ Direction d = UP;
+ do
+ {
+ for (int i=0; i < clash_groups[d].size (); i++)
+ (*offsets)[d][i] += d * shift_amount;
+ }
+ while ((flip (&d))!= UP);
+}
+
+
/*
TODO: make callback of this.
+
+ TODO:
+
+ note-width is hardcoded, making it difficult to handle all note
+ heads sanely. We should really look at the widths of the colliding
+ columns, and have a separate setting for "align stems".
+
+
*/
void
-Collision::do_shifts(Score_element* me)
+Collision::do_shifts (Grob* me)
{
SCM autos (automatic_shift (me));
SCM hand (forced_shift (me));
- Link_array<Score_element> done;
-
+ Link_array<Grob> done;
+
+
Real wid
- = gh_scm2double (me->get_elt_property ("note-width"))
- * me->paper_l ()->get_var ("staffspace");
+ = gh_scm2double (me->get_grob_property ("note-width"));
for (; gh_pair_p (hand); hand =gh_cdr (hand))
{
- Score_element * s = unsmob_element (gh_caar (hand));
+ Grob * s = unsmob_grob (gh_caar (hand));
Real amount = gh_scm2double (gh_cdar (hand));
s->translate_axis (amount *wid, X_AXIS);
}
for (; gh_pair_p (autos); autos =gh_cdr (autos))
{
- Score_element * s = unsmob_element (gh_caar (autos));
+ Grob * s = unsmob_grob (gh_caar (autos));
Real amount = gh_scm2double (gh_cdar (autos));
if (!done.find_l (s))
This should be put into Scheme.
*/
SCM
-Collision::automatic_shift (Score_element *me)
+Collision::automatic_shift (Grob *me)
{
- Drul_array<Link_array<Score_element> > clash_groups;
+ Drul_array<Link_array<Grob> > clash_groups;
Drul_array<Array<int> > shifts;
SCM tups = SCM_EOL;
- SCM s = me->get_elt_property ("elements");
+ SCM s = me->get_grob_property ("elements");
for (; gh_pair_p (s); s = gh_cdr (s))
{
SCM car = gh_car (s);
- Score_element * se = unsmob_element (car);
+ Grob * se = unsmob_grob (car);
if (Note_column::has_interface (se))
clash_groups[Note_column::dir (se)].push (se);
}
do
{
Array<int> & shift (shifts[d]);
- Link_array<Score_element> & clashes (clash_groups[d]);
+ Link_array<Grob> & clashes (clash_groups[d]);
clashes.sort (Note_column::shift_compare);
for (int i=0; i < clashes.size (); i++)
{
SCM sh
- = clashes[i]->get_elt_property ("horizontal-shift");
+ = clashes[i]->get_grob_property ("horizontal-shift");
if (gh_number_p (sh))
shift.push (gh_scm2int (sh));
{
for (int i=0; i < clash_groups[d].size (); i++)
{
- Slice s(Note_column::head_positions_interval (clash_groups[d][i]));
+ Slice s (Note_column::head_positions_interval (clash_groups[d][i]));
s[LEFT] --;
s[RIGHT]++;
extents[d].push (s);
}
}
while ((flip (&d))!= UP);
+
+ /*
+ do horizontal shifts of each direction
+
+ |
+ x||
+ x||
+ x|
+ */
do
{
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))
+ (extents[-d].size () && d * (extents[d][i][-d] - extents[-d][0][d]) < 0))
for (int j = i; j < clash_groups[d].size (); j++)
offsets[d][j] += d * 0.5;
}
}
while ((flip (&d))!= UP);
+
+ /*
+ Check if chords are meshing
+ */
+
+ check_meshing_chords (me, &offsets, extents, clash_groups);
+
+#if 0
/*
if the up and down version are close, and can not be merged, move
all of them again. */
if (extents[UP].size () && extents[DOWN].size ())
{
- Score_element *cu_l =clash_groups[UP][0];
- Score_element *cd_l =clash_groups[DOWN][0];
+ Grob *cu_l =clash_groups[UP][0];
+ Grob *cd_l =clash_groups[DOWN][0];
/*
TODO.
*/
- Score_element * nu_l= Note_column::first_head(cu_l);
- Score_element * nd_l = Note_column::first_head(cd_l);
+ Grob * nu_l= Note_column::first_head (cu_l);
+ Grob * nd_l = Note_column::first_head (cd_l);
int downpos = Note_column::head_positions_interval (cd_l)[BIGGER];
int uppos = Note_column::head_positions_interval (cu_l)[SMALLER];
&& Rhythmic_head::balltype_i (nu_l) == Rhythmic_head::balltype_i (nd_l);
- if (!to_boolean (me->get_elt_property ("merge-differently-dotted")))
+ if (!to_boolean (me->get_grob_property ("merge-differently-dotted")))
merge = merge && Rhythmic_head::dot_count (nu_l) == Rhythmic_head::dot_count (nd_l);
/*
notes are close, but can not be merged. Shift
*/
- if (abs(uppos - downpos) < 2 && !merge)
+ if (abs (uppos - downpos) < 2 && !merge)
do
{
for (int i=0; i < clash_groups[d].size (); i++)
{
- offsets[d][i] -= d * 0.5;
+ if(Rhythmic_head::dot_count (nu_l) > Rhythmic_head::dot_count (nd_l))
+ offsets[d][i] += d * 0.5;
+ else
+ offsets[d][i] -= d * 0.5;
}
}
while ((flip (&d))!= UP);
}
-
+#endif
+
do
{
for (int i=0; i < clash_groups[d].size (); i++)
SCM
-Collision::forced_shift (Score_element *me)
+Collision::forced_shift (Grob *me)
{
SCM tups = SCM_EOL;
- SCM s = me->get_elt_property ("elements");
+ SCM s = me->get_grob_property ("elements");
for (; gh_pair_p (s); s = gh_cdr (s))
{
- Score_element * se = unsmob_element (gh_car (s));
+ Grob * se = unsmob_grob (gh_car (s));
- SCM force = se->remove_elt_property ("force-hshift");
+ SCM force = se->remove_grob_property ("force-hshift");
if (gh_number_p (force))
{
tups = gh_cons (gh_cons (se->self_scm (), force),
return tups;
}
-
-
+void
+Collision::add_column (Grob*me,Grob* ncol_l)
+{
+ ncol_l->add_offset_callback (Collision::force_shift_callback_proc, X_AXIS);
+ Axis_group_interface::add_element (me, ncol_l);
+ me->add_dependency (ncol_l);
+}
projects / lilypond.git / blobdiff