-
/*
collision.cc -- implement Collision
source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "warn.hh"
#include "note-collision.hh"
+
+#include <math.h>
+
+#include "warn.hh"
#include "note-column.hh"
#include "note-head.hh"
#include "rhythmic-head.hh"
-#include "paper-def.hh"
+#include "output-def.hh"
#include "axis-group-interface.hh"
-#include "item.hh"
#include "stem.hh"
+#include "side-position-interface.hh"
+#include "dot-column.hh"
-MAKE_SCHEME_CALLBACK (Note_collision_interface,force_shift_callback,2);
+MAKE_SCHEME_CALLBACK (Note_collision_interface, force_shift_callback, 2);
SCM
Note_collision_interface::force_shift_callback (SCM element_smob, SCM axis)
{
Grob *me = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (axis);
+ Axis a = (Axis) scm_to_int (axis);
assert (a == X_AXIS);
-
- me = me->get_parent (a);
- if (! to_boolean (me->get_grob_property ("collision-done")))
+ me = me->get_parent (a);
+
+ if (! to_boolean (me->get_property ("positioning-done")))
{
- me->set_grob_property ("collision-done", SCM_BOOL_T);
+ me->set_property ("positioning-done", SCM_BOOL_T);
do_shifts (me);
}
-
- return gh_double2scm (0.0);
-}
+ return scm_make_real (0.0);
+}
void
-check_meshing_chords (Grob*me,
- Drul_array< Array < Real > > *offsets,
- Drul_array< Array < Slice > > const &extents,
+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= Note_column::first_head (cu);
- Grob * nd = Note_column::first_head (cd);
-
-
-
- /*
- 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;
- bool full_collide = false;
+ return;
- /*
- Let's not crash.
- */
- if (!Note_column::get_stem (cu)
- || !Note_column::get_stem (cd))
- return ;
-
-
- /*
- TODO:
+ Grob *cu = clash_groups[UP][0];
+ Grob *cd = clash_groups[DOWN][0];
- filter out the 'o's in this configuration, since they're no part
- in the collision.
+ /* Every note column should have a stem, but avoid a crash. */
+ if (!Note_column::get_stem (cu) || !Note_column::get_stem (cd))
+ return;
- |
- x|o
- x|o
- x
+ Grob *nu = Note_column::first_head (cu);
+ Grob *nd = Note_column::first_head (cd);
-
- */
Array<int> ups = Stem::note_head_positions (Note_column::get_stem (cu));
Array<int> dps = Stem::note_head_positions (Note_column::get_stem (cd));
- /*
- they're too far apart to collide.
-
- */
-
+ /* Too far apart to collide. */
if (ups[0] > dps.top () + 1)
- return ;
+ return;
- bool touch = (ups[0] - dps.top () >= 0);
-
+ // FIXME: what's this?
bool merge_possible = (ups[0] >= dps[0]) && (ups.top () >= dps.top ());
- /*
- don't merge whole notes (or longer, like breve, longa, maxima)
- */
+ /* Do not merge notes typeset in different style. */
+ if (!ly_c_equal_p (nu->get_property ("style"),
+ nd->get_property ("style")))
+ merge_possible = false;
int upball_type = Note_head::get_balltype (nu);
int dnball_type = Note_head::get_balltype (nd);
-
- merge_possible = merge_possible && (upball_type > 0);
- if (!to_boolean (me->get_grob_property ("merge-differently-dotted")))
- merge_possible = merge_possible && Rhythmic_head::dot_count (nu) == Rhythmic_head::dot_count (nd);
+ /* Do not merge whole notes (or longer, like breve, longa, maxima). */
+ if (merge_possible && (upball_type <= 0 || dnball_type <= 0))
+ merge_possible = false;
+
+ if (merge_possible
+ && Rhythmic_head::dot_count (nu) != Rhythmic_head::dot_count (nd)
+ && !to_boolean (me->get_property ("merge-differently-dotted")))
+ merge_possible = false;
+
+ /* Can only merge different heads if merge-differently-headed is
+ set. */
+ if (merge_possible
+ && upball_type != dnball_type
+ && !to_boolean (me->get_property ("merge-differently-headed")))
+ merge_possible = false;
+
+ /* Should never merge quarter and half notes, as this would make
+ them indistinguishable. */
+ if (merge_possible
+ && ((Rhythmic_head::duration_log (nu) == 1
+ && Rhythmic_head::duration_log (nd) == 2)
+ || (Rhythmic_head::duration_log (nu) == 2
+ && Rhythmic_head::duration_log (nd) == 1)))
+ merge_possible = false;
-
- if (!to_boolean (me->get_grob_property ("merge-differently-headed")))
- merge_possible = merge_possible &&
- upball_type == dnball_type;
- else
- /*
- Can't merge quarter and half notes.
- */
- merge_possible = merge_possible &&
- !((Rhythmic_head::duration_log (nu) == 1
- && Rhythmic_head::duration_log (nd) == 2)
- ||(Rhythmic_head::duration_log (nu) == 2
- && Rhythmic_head::duration_log (nd) == 1));
-
- int i = 0, j=0;
+ /*
+ 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
+
+ */
+
+ bool close_half_collide = false;
+ bool distant_half_collide = false;
+ bool full_collide = false;
+
+ int i = 0, j = 0;
while (i < ups.size () && j < dps.size ())
- {
- if (abs (ups[i] - dps[j]) == 1)
- {
+ {
+ if (abs (ups[i] - dps[j]) == 1)
+ {
+ merge_possible = false;
+ if (ups[i] > dps[j])
+ close_half_collide = true;
+ else
+ distant_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;
- if (ups[i] > dps[j])
- close_half_collide = true;
- else
- distant_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
- {
+ 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++;
+ }
+ }
+
+ full_collide = full_collide || (close_half_collide
+ && distant_half_collide);
Drul_array<Real> center_note_shifts;
center_note_shifts[LEFT] = 0.0;
center_note_shifts[RIGHT] = 0.0;
-
Real shift_amount = 1;
+ bool touch = (ups[0] >= dps.top ());
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.
- */
- if ((Rhythmic_head::dot_count (nu) > Rhythmic_head::dot_count (nd)
- && full_collide))
- shift_amount = 1;
+ /* For full collisions, the right hand head may obscure dots, so
+ make sure the dotted heads go to the right. */
+ bool stem_to_stem = false;
+ if (full_collide)
+ if (Rhythmic_head::dot_count (nu) > Rhythmic_head::dot_count (nd))
+ shift_amount = 1;
+ else if (Rhythmic_head::dot_count (nu) < Rhythmic_head::dot_count (nd))
+ stem_to_stem = true;
- /*
- TODO: these numbers are magic; should devise a set of grob props
- to tune this behavior. */
-
if (merge_possible)
{
- shift_amount *= 0.0;
+ shift_amount = 0;
+
+ /* 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. */
Grob *wipe_ball = 0;
-
- if (upball_type < dnball_type)
- wipe_ball = nd;
- else if (upball_type > dnball_type)
- wipe_ball = nu;
+ Grob *dot_wipe_head = nu;
- if (wipe_ball)
+ if (upball_type == dnball_type)
+ {
+ if (Rhythmic_head::dot_count (nd) < Rhythmic_head::dot_count (nu))
+ {
+ wipe_ball = nd;
+ dot_wipe_head = nd;
+ }
+ else if (Rhythmic_head::dot_count (nd) > Rhythmic_head::dot_count (nu))
+ {
+ dot_wipe_head = nu;
+ wipe_ball = nu;
+ }
+ else
+ {
+ dot_wipe_head = nu;
+ }
+ }
+ else if (dnball_type > upball_type)
+ {
+ wipe_ball = nd;
+ dot_wipe_head = nd;
+ }
+ else if (dnball_type < upball_type)
{
- wipe_ball->set_grob_property ("transparent", SCM_BOOL_T);
- wipe_ball->set_grob_property ("molecule", SCM_EOL);
+ wipe_ball = nu;
+ dot_wipe_head = nu;
+ }
+
+ if (dot_wipe_head)
+ {
+ if (Grob *d = unsmob_grob (dot_wipe_head->get_property ("dot")))
+ d->suicide ();
+ }
+
+ if (wipe_ball && wipe_ball->is_live ())
+ {
+ wipe_ball->set_property ("transparent", SCM_BOOL_T);
+ wipe_ball->set_property ("stencil", SCM_EOL);
}
}
+ /* 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 *= 0.52;
else if (distant_half_collide && !touch)
shift_amount *= 0.4;
else if (distant_half_collide || close_half_collide || full_collide)
shift_amount *= 0.5;
-
- /*
- we're meshing.
- */
+
+ /* we're meshing. */
else if (Rhythmic_head::dot_count (nu) || Rhythmic_head::dot_count (nd))
shift_amount *= 0.1;
else
- shift_amount *= 0.25;
+ shift_amount *= 0.17;
+
+ /* 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 (nd) > Rhythmic_head::dot_count (nu)
+ && (full_collide || close_half_collide))
+ {
+ Grob *d = unsmob_grob (nd->get_property ("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))
+ Side_position_interface::add_support (parent, nu);
+ }
Direction d = UP;
do
{
- for (int i=0; i < clash_groups[d].size (); i++)
+ for (int i = 0; i < clash_groups[d].size (); i++)
(*offsets)[d][i] += d * shift_amount;
}
- while ((flip (&d))!= UP);
+ while ((flip (&d)) != UP);
}
void
-Note_collision_interface::do_shifts (Grob* me)
+Note_collision_interface::do_shifts (Grob *me)
{
- Drul_array< Link_array <Grob> > cg = get_clash_groups (me);
+ Drul_array<Link_array<Grob> > cg = get_clash_groups (me);
SCM autos (automatic_shift (me, cg));
SCM hand (forced_shift (me));
-
-
Direction d = UP;
Real wid = 0.0;
do
{
- if(cg[d].size())
+ if (cg[d].size ())
{
- Grob *h = cg[d][0];
- wid = Note_column::first_head(h)->extent(h,X_AXIS).length() ;
+ Grob *h = cg[d][0];
+ wid = Note_column::first_head (h)->extent (h, X_AXIS).length ();
}
}
-
while (flip (&d) != UP);
-
Link_array<Grob> done;
- for (; gh_pair_p (hand); hand =ly_cdr (hand))
+ Real left_most = 1e6;
+
+ Array<Real> amounts;
+ for (; scm_is_pair (hand); hand = scm_cdr (hand))
{
- Grob * s = unsmob_grob (ly_caar (hand));
- Real amount = gh_scm2double (ly_cdar (hand));
-
- s->translate_axis (amount *wid, X_AXIS);
+ Grob *s = unsmob_grob (scm_caar (hand));
+ Real amount = scm_to_double (scm_cdar (hand)) * wid;
+
done.push (s);
+ amounts.push (amount);
+ if (amount < left_most)
+ left_most = amount;
}
- for (; gh_pair_p (autos); autos =ly_cdr (autos))
+ for (; scm_is_pair (autos); autos = scm_cdr (autos))
{
- Grob * s = unsmob_grob (ly_caar (autos));
- Real amount = gh_scm2double (ly_cdar (autos));
-
+ Grob *s = unsmob_grob (scm_caar (autos));
+ Real amount = scm_to_double (scm_cdar (autos)) * wid;
+
if (!done.find (s))
- s->translate_axis (amount * wid, X_AXIS);
+ {
+ done.push (s);
+ amounts.push (amount);
+ if (amount < left_most)
+ left_most = amount;
+ }
+ }
+
+ for (int i = 0; i < amounts.size (); i++)
+ {
+ done[i]->translate_axis (amounts[i] - left_most, X_AXIS);
}
}
-Drul_array< Link_array <Grob> >
-Note_collision_interface::get_clash_groups (Grob *me)
+Drul_array < Link_array<Grob>
+> Note_collision_interface::get_clash_groups (Grob *me)
{
Drul_array<Link_array<Grob> > clash_groups;
-
- SCM s = me->get_grob_property ("elements");
- for (; gh_pair_p (s); s = ly_cdr (s))
+
+ SCM s = me->get_property ("elements");
+ for (; scm_is_pair (s); s = scm_cdr (s))
{
- SCM car = ly_car (s);
+ SCM car = scm_car (s);
- Grob * se = unsmob_grob (car);
+ Grob *se = unsmob_grob (car);
if (Note_column::has_interface (se))
clash_groups[Note_column::dir (se)].push (se);
}
-
+
Direction d = UP;
do
{
- Link_array<Grob> & clashes (clash_groups[d]);
+ Link_array<Grob> &clashes (clash_groups[d]);
clashes.sort (Note_column::shift_compare);
}
- while ((flip (&d))!= UP);
+ while ((flip (&d)) != UP);
return clash_groups;
}
/** This complicated routine moves note columns around horizontally to
- ensure that notes don't clash.
+ ensure that notes don't clash.
- This should be put into Scheme.
- */
+ This should be put into Scheme.
+*/
SCM
Note_collision_interface::automatic_shift (Grob *me,
- Drul_array< Link_array <Grob> >
- clash_groups)
+ Drul_array < Link_array<Grob>
+ > clash_groups)
{
- Drul_array<Array<int> > shifts;
- SCM tups = SCM_EOL;
+ Drul_array < Array<int> > shifts;
+ SCM tups = SCM_EOL;
-
Direction d = UP;
do
{
- Array<int> & shift (shifts[d]);
- Link_array<Grob> & clashes (clash_groups[d]);
+ Array<int> &shift (shifts[d]);
+ Link_array<Grob> &clashes (clash_groups[d]);
- for (int i=0; i < clashes.size (); i++)
+ for (int i = 0; i < clashes.size (); i++)
{
SCM sh
- = clashes[i]->get_grob_property ("horizontal-shift");
+ = clashes[i]->get_property ("horizontal-shift");
- if (gh_number_p (sh))
- shift.push (gh_scm2int (sh));
+ if (scm_is_number (sh))
+ shift.push (scm_to_int (sh));
else
shift.push (0);
}
-
- for (int i=1; i < shift.size (); i++)
+
+ for (int i = 1; i < shift.size (); i++)
{
- if (shift[i-1] == shift[i])
+ if (shift[i - 1] == shift[i])
{
- clashes[0]->warning (_ ("Too many clashing notecolumns. Ignoring them."));
+ clashes[0]->warning (_ ("ignoring too many clashing note columns"));
return tups;
}
}
}
- while ((flip (&d))!= UP);
+ while ((flip (&d)) != UP);
- Drul_array< Array < Slice > > extents;
- Drul_array< Array < Real > > offsets;
+ Drul_array<Array<Slice> > extents;
+ Drul_array<Array<Real> > offsets;
d = UP;
do
{
- for (int i=0; i < clash_groups[d].size (); i++)
+ for (int i = 0; i < clash_groups[d].size (); i++)
{
Slice s (Note_column::head_positions_interval (clash_groups[d][i]));
- s[LEFT] --;
+ s[LEFT]--;
s[RIGHT]++;
extents[d].push (s);
offsets[d].push (d * 0.5 * i);
}
}
- while ((flip (&d))!= UP);
+ while ((flip (&d)) != UP);
/*
- do horizontal shifts of each direction
-
- |
- x||
- x||
- x|
- */
-
+ do horizontal shifts of each direction
+
+ |
+ x||
+ x||
+ x|
+ */
+
do
{
- for (int i=1; i < clash_groups[d].size (); i++)
+ for (int i = 1; i < clash_groups[d].size (); i++)
{
- Slice prev =extents[d][i-1];
+ 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 (int j = i; j < clash_groups[d].size (); j++)
+ if (prev.length () > 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);
-
+ }
+ while ((flip (&d)) != UP);
/*
Check if chords are meshing
- */
+ */
check_meshing_chords (me, &offsets, extents, clash_groups);
-
+
do
{
- for (int i=0; i < clash_groups[d].size (); i++)
- tups = gh_cons (gh_cons (clash_groups[d][i]->self_scm (), gh_double2scm (offsets[d][i])),
- tups);
+ for (int i = 0; i < clash_groups[d].size (); i++)
+ tups = scm_cons (scm_cons (clash_groups[d][i]->self_scm (),
+ scm_make_real (offsets[d][i])),
+ tups);
}
while (flip (&d) != UP);
+
return tups;
}
-
SCM
Note_collision_interface::forced_shift (Grob *me)
{
SCM tups = SCM_EOL;
-
- SCM s = me->get_grob_property ("elements");
- for (; gh_pair_p (s); s = ly_cdr (s))
+
+ SCM s = me->get_property ("elements");
+ for (; scm_is_pair (s); s = scm_cdr (s))
{
- Grob * se = unsmob_grob (ly_car (s));
+ Grob *se = unsmob_grob (scm_car (s));
- SCM force = se->get_grob_property ("force-hshift");
- if (gh_number_p (force))
+ SCM force = se->get_property ("force-hshift");
+ if (scm_is_number (force))
{
- tups = gh_cons (gh_cons (se->self_scm (), force),
- tups);
+ tups = scm_cons (scm_cons (se->self_scm (), force),
+ tups);
}
}
return tups;
}
void
-Note_collision_interface::add_column (Grob*me,Grob* ncol)
+Note_collision_interface::add_column (Grob *me, Grob *ncol)
{
ncol->add_offset_callback (Note_collision_interface::force_shift_callback_proc, X_AXIS);
Axis_group_interface::add_element (me, ncol);
me->add_dependency (ncol);
}
-
ADD_INTERFACE (Note_collision_interface, "note-collision-interface",
- "An object that handles collisions between notes with different stem
-directions and horizontal shifts. Most of the interesting properties
-are to be set in @ref{note-column-interface}: these are
-@code{force-hshift} and @code{horizontal-shift}.
-",
- "merge-differently-dotted merge-differently-headed collision-done");
+ "An object that handles collisions between notes with different stem "
+ "directions and horizontal shifts. Most of the interesting properties "
+ "are to be set in @ref{note-column-interface}: these are "
+ "@code{force-hshift} and @code{horizontal-shift}.",
+
+ "merge-differently-dotted merge-differently-headed positioning-done");
projects / lilypond.git / blobdiff