-/*
- accidental-placement.cc -- implement Accidental_placement
-
- source file of the GNU LilyPond music typesetter
+/*
+ accidental-placement.cc -- implement Accidental_placement
- (c) 2002--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ source file of the GNU LilyPond music typesetter
+ (c) 2002--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include <cmath>
-
+#include <math.h>
#include "accidental-placement.hh"
#include "libc-extension.hh" // isinf
#include "note-collision.hh"
#include "accidental-interface.hh"
-MAKE_SCHEME_CALLBACK (Accidental_placement,alignment_callback, 2);
+MAKE_SCHEME_CALLBACK (Accidental_placement, alignment_callback, 2);
SCM
-Accidental_placement::alignment_callback (SCM s, SCM )
+Accidental_placement::alignment_callback (SCM s, SCM)
{
- Grob * me = unsmob_grob (s);
+ Grob *me = unsmob_grob (s);
- Grob * par = me->get_parent (X_AXIS);
+ Grob *par = me->get_parent (X_AXIS);
if (!to_boolean (par->get_property ("positioning-done")))
{
par->set_property ("positioning-done", SCM_BOOL_T);
return scm_int2num (0);
}
-
void
-Accidental_placement::add_accidental (Grob* me, Grob* a)
+Accidental_placement::add_accidental (Grob *me, Grob *a)
{
a->set_parent (me, X_AXIS);
a->add_offset_callback (alignment_callback_proc, X_AXIS);
SCM cause = a->get_parent (Y_AXIS)->get_property ("cause");
- Music *mcause = unsmob_music (cause);
+ Music *mcause = unsmob_music (cause);
if (!mcause)
{
- programming_error ("Note head has no music cause!");
- return;
+ programming_error ("note head has no music cause");
+ return;
}
- Pitch *p= unsmob_pitch (mcause->get_property ("pitch"));
+ Pitch *p = unsmob_pitch (mcause->get_property ("pitch"));
int n = p->get_notename ();
entry = scm_cons (a->self_scm (), entry);
- accs = scm_assq_set_x (accs, key, entry);
+ accs = scm_assq_set_x (accs, key, entry);
me->set_property ("accidental-grobs", accs);
}
/*
Split into break reminders.
- */
+*/
void
-Accidental_placement::split_accidentals (Grob * accs,
+Accidental_placement::split_accidentals (Grob *accs,
Link_array<Grob> *break_reminder,
Link_array<Grob> *real_acc)
{
- for (SCM acs =accs->get_property ("accidental-grobs"); scm_is_pair (acs);
- acs =scm_cdr (acs))
+ for (SCM acs = accs->get_property ("accidental-grobs"); scm_is_pair (acs);
+ acs = scm_cdr (acs))
for (SCM s = scm_cdar (acs); scm_is_pair (s); s = scm_cdr (s))
{
Grob *a = unsmob_grob (scm_car (s));
Accidental_placement::split_accidentals (me, &br, &ra);
br.concat (ra);
-
- if (dynamic_cast<Item*>(left_object)->break_status_dir () == RIGHT)
- which = & br;
+
+ if (dynamic_cast<Item *> (left_object)->break_status_dir () == RIGHT)
+ which = &br;
else
- which = & ra;
-
+ which = &ra;
+
Interval extent;
for (int i = 0; i < which->size (); i++)
{
Real p = robust_scm2double (me->get_property ("left-padding"), 0.2);
extent[LEFT] -= p;
}
-
+
return extent;
}
-
-
struct Accidental_placement_entry
{
Array<Skyline_entry> left_skyline_;
Interval vertical_extent_;
Array<Box> extents_;
Link_array<Grob> grobs_;
- Real offset_;
+ Real offset_;
int notename_;
Accidental_placement_entry ()
{
- offset_ =0.0;
+ offset_ = 0.0;
notename_ = -1;
}
};
static Interval all_accidental_vertical_extent;
-Real ape_priority (Accidental_placement_entry const * a)
+Real ape_priority (Accidental_placement_entry const *a)
{
return a->vertical_extent_[UP];
}
-
-
int ape_compare (Accidental_placement_entry *const &a,
Accidental_placement_entry *const &b)
{
}
int ape_rcompare (Accidental_placement_entry *const &a,
- Accidental_placement_entry *const &b)
+ Accidental_placement_entry *const &b)
{
return -sign (ape_priority (a) - ape_priority (b));
}
-
/*
+ TODO: should favor
-TODO: should favor
-
b
- b
+ b
-placement
-
+ placement
*/
void
stagger_apes (Link_array<Accidental_placement_entry> *apes)
{
Link_array<Accidental_placement_entry> asc = *apes;
-
asc.sort (&ape_compare);
apes->clear ();
- int i =0;
+ int i = 0;
int parity = 1;
while (i < asc.size ())
{
- Accidental_placement_entry * a = 0;
+ Accidental_placement_entry *a = 0;
if (parity)
a = asc.pop ();
else
apes->reverse ();
}
-
-
/*
-
This routine computes placements of accidentals. During
add_accidental (), accidentals are already grouped by note, so that
octaves are placed above each other; they form columns. Then the
columns are sorted: the biggest columns go closest to the note.
Then the columns are spaced as closely as possible (using skyline
spacing).
-
-
+
+
TODO: more advanced placement. Typically, the accs should be placed
to form a C shape, like this
-
- ##
- b b
- # #
- b
- b b
- The naturals should be left of the C as well; they should
- be separate accs.
+ ##
+ b b
+ # #
+ b
+ b b
- Note that this placement problem looks NP hard, so we just use a
- simple strategy, not an optimal choice.
+ The naturals should be left of the C as well; they should
+ be separate accs.
+ Note that this placement problem looks NP hard, so we just use a
+ simple strategy, not an optimal choice.
*/
/*
TODO: there should be more space in the following situation
- Natural + downstem
+ Natural + downstem
- |_
- | | X
- |_| |
- | |
-
- */
+ |_
+ | | X
+ |_| |
+ | |
+*/
SCM
-Accidental_placement::position_accidentals (Grob * me)
+Accidental_placement::position_accidentals (Grob *me)
{
if (!me->is_live ())
return SCM_UNSPECIFIED;
-
+
SCM accs = me->get_property ("accidental-grobs");
+ if (!scm_is_pair (accs))
+ return SCM_UNSPECIFIED;
/*
TODO: there is a bug in this code. If two accs are on the same
Y-position, they share an Ape, and will be printed in overstrike.
- */
+ */
Link_array<Accidental_placement_entry> apes;
- for (SCM s = accs; scm_is_pair (s); s =scm_cdr (s))
+ for (SCM s = accs; scm_is_pair (s); s = scm_cdr (s))
{
Accidental_placement_entry *ape = new Accidental_placement_entry;
ape->notename_ = scm_to_int (scm_caar (s));
-
- for (SCM t = scm_cdar (s); scm_is_pair (t); t =scm_cdr (t))
+
+ for (SCM t = scm_cdar (s); scm_is_pair (t); t = scm_cdr (t))
ape->grobs_.push (unsmob_grob (scm_car (t)));
apes.push (ape);
/*
First we must extract *all* pointers. We can only determine
extents if we're sure that we've found the right common refpoint
- */
+ */
Link_array<Grob> note_cols, heads;
- for (int i= apes.size (); i--;)
- {
- Accidental_placement_entry * ape = apes[i];
+ for (int i = apes.size (); i--;)
+ {
+ Accidental_placement_entry *ape = apes[i];
for (int j = ape->grobs_.size (); j--;)
{
- Grob * a = ape->grobs_[j];
+ Grob *a = ape->grobs_[j];
if (common[Y_AXIS])
common[Y_AXIS] = common[Y_AXIS]->common_refpoint (a, Y_AXIS);
else
common[Y_AXIS] = a;
-
+
Grob *head = a->get_parent (Y_AXIS);
- Grob * col = head->get_parent (X_AXIS);
+ Grob *col = head->get_parent (X_AXIS);
if (Note_column::has_interface (col))
note_cols.push (col);
else
/*
This is a little kludgy: to get all notes, we look if there are
collisions as well.
- */
- for (int i = note_cols.size () ; i--;)
+ */
+ for (int i = note_cols.size (); i--;)
{
Grob *c = note_cols[i]->get_parent (X_AXIS);
if (Note_collision_interface::has_interface (c))
{
- Link_array<Grob> gs =
- Pointer_group_interface__extract_grobs (c, (Grob*)0, "elements");
-
+ Link_array<Grob> gs
+ = extract_grob_array (c, ly_symbol2scm ("elements"));
+
note_cols.concat (gs);
}
}
-
- for (int i = note_cols.size () ; i--;)
+
+ for (int i = note_cols.size (); i--;)
{
- heads.concat (Pointer_group_interface__extract_grobs (note_cols[i],
- (Grob*)0,
- "note-heads"));
-
+ heads.concat (extract_grob_array (note_cols[i], ly_symbol2scm ("note-heads")));
}
heads.default_sort ();
heads.uniq ();
common[Y_AXIS] = common_refpoint_of_array (heads, common[Y_AXIS], Y_AXIS);
-
- for (int i= apes.size (); i--;)
+ for (int i = apes.size (); i--;)
{
- Accidental_placement_entry * ape = apes[i];
+ Accidental_placement_entry *ape = apes[i];
ape->left_skyline_ = empty_skyline (LEFT);
ape->right_skyline_ = empty_skyline (RIGHT);
-
+
for (int j = apes[i]->grobs_.size (); j--;)
{
- Grob * a = apes[i]->grobs_[j];
+ Grob *a = apes[i]->grobs_[j];
Array<Box> boxes = Accidental_interface::accurate_boxes (a, common);
-
+
ape->extents_.concat (boxes);
- for (int j = boxes.size (); j--;)
+ for (int j = boxes.size (); j--;)
{
insert_extent_into_skyline (&ape->left_skyline_, boxes[j], Y_AXIS, LEFT);
- insert_extent_into_skyline (&ape->right_skyline_ , boxes[j], Y_AXIS, RIGHT);
+ insert_extent_into_skyline (&ape->right_skyline_, boxes[j], Y_AXIS, RIGHT);
}
}
}
-
Interval total;
for (int i = apes.size (); i--;)
{
- Interval y ;
-
+ Interval y;
+
for (int j = apes[i]->extents_.size (); j--;)
{
y.unite (apes[i]->extents_[j][Y_AXIS]);
all_accidental_vertical_extent = total;
stagger_apes (&apes);
- Accidental_placement_entry * head_ape = new Accidental_placement_entry;
- common[X_AXIS] = common_refpoint_of_array (heads, common[X_AXIS], X_AXIS);
+ Accidental_placement_entry *head_ape = new Accidental_placement_entry;
+ common[X_AXIS] = common_refpoint_of_array (heads, common[X_AXIS], X_AXIS);
Array<Skyline_entry> head_skyline (empty_skyline (LEFT));
Array<Box> head_extents;
for (int i = heads.size (); i--;)
{
- Box b (heads[i]->extent (common[X_AXIS] , X_AXIS),
- heads[i]->extent (common[Y_AXIS], Y_AXIS));
+ Box b (heads[i]->extent (common[X_AXIS], X_AXIS),
+ heads[i]->extent (common[Y_AXIS], Y_AXIS));
- insert_extent_into_skyline (&head_skyline, b , Y_AXIS, LEFT);
+ insert_extent_into_skyline (&head_skyline, b, Y_AXIS, LEFT);
}
- head_ape-> left_skyline_ = head_skyline;
+ head_ape->left_skyline_ = head_skyline;
head_ape->offset_ = 0.0;
- Real padding = robust_scm2double (me->get_property ("padding"),0.2);
+ Real padding = robust_scm2double (me->get_property ("padding"), 0.2);
Array<Skyline_entry> left_skyline = head_ape->left_skyline_;
heighten_skyline (&left_skyline,
-robust_scm2double (me->get_property ("right-padding"), 0));
/*
Add accs entries right-to-left.
- */
- for (int i= apes.size (); i-- > 0;)
+ */
+ for (int i = apes.size (); i-- > 0;)
{
- Real offset =
- -skyline_meshing_distance (apes[i]->right_skyline_, left_skyline);
+ Real offset
+ = -skyline_meshing_distance (apes[i]->right_skyline_, left_skyline);
if (isinf (offset))
- offset = (i < apes.size () - 1) ? apes[i+1]->offset_ : 0.0;
+ offset = (i < apes.size () - 1) ? apes[i + 1]->offset_ : 0.0;
else
offset -= padding;
heighten_skyline (&new_left_skyline, apes[i]->offset_);
merge_skyline (&new_left_skyline, left_skyline, LEFT);
left_skyline = new_left_skyline;
- }
+ }
for (int i = apes.size (); i--;)
{
- Accidental_placement_entry* ape = apes[i];
- for (int j = ape->grobs_.size (); j--;)
+ Accidental_placement_entry *ape = apes[i];
+ for (int j = ape->grobs_.size (); j--;)
{
ape->grobs_[j]->translate_axis (ape->offset_, X_AXIS);
}
}
-
Interval left_extent, right_extent;
Accidental_placement_entry *ape = apes[0];
for (int i = ape->extents_.size (); i--;)
- left_extent.unite (ape->offset_ + ape->extents_[i][X_AXIS]);
+ left_extent.unite (ape->offset_ + ape->extents_[i][X_AXIS]);
ape = apes.top ();
for (int i = ape->extents_.size (); i--;)
- right_extent.unite (ape->offset_ + ape->extents_[i][X_AXIS]);
+ right_extent.unite (ape->offset_ + ape->extents_[i][X_AXIS]);
-
left_extent[LEFT] -= robust_scm2double (me->get_property ("left-padding"), 0);
Interval width (left_extent[LEFT], right_extent[RIGHT]);
SCM scm_width = ly_interval2scm (width);
me->set_extent (scm_width, X_AXIS);
-
+
for (int i = apes.size (); i--;)
delete apes[i];
}
ADD_INTERFACE (Accidental_placement,
- "accidental-placement-interface",
- "Resolve accidental collisions.",
- "left-padding padding right-padding accidental-grobs positioning-done")
+ "accidental-placement-interface",
+ "Resolve accidental collisions.",
+ "left-padding padding right-padding accidental-grobs positioning-done")