/*
- slur.cc -- implement Slur
+ slur.cc -- implement external interface for Slur
source file of the GNU LilyPond music typesetter
- (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1996--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
-/*
- [TODO]
-
- * should avoid stafflines with horizontal part.
-
- * begin and end should be treated as a/acknowledge Scripts.
-
- * smart changing of endings
+#include "slur.hh"
- * smart changing of (Y-?)offsets to avoid ugly beziers
- (along-side-stem)
-
- */
+#include <math.h>
+#include "beam.hh"
+#include "bezier.hh"
#include "directional-element-interface.hh"
+#include "font-interface.hh"
#include "group-interface.hh"
-#include "slur.hh"
#include "lookup.hh"
-#include "paper-def.hh"
+#include "main.hh" // DEBUG_SLUR_SCORING
#include "note-column.hh"
+#include "output-def.hh"
+#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
+#include "staff-symbol.hh"
#include "stem.hh"
-#include "paper-column.hh"
-#include "stencil.hh"
+#include "text-item.hh"
#include "warn.hh"
-#include "slur-bezier-bow.hh"
-#include "main.hh"
-#include "group-interface.hh"
-#include "staff-symbol-referencer.hh"
-#include "spanner.hh"
-
-
-void
-Slur::set_interface (Grob*me)
-{
- /* Copy to mutable list. */
- me->set_property ("attachment",
- ly_deep_copy (me->get_property ("attachment")));
-}
-
-void
-Slur::add_column (Grob*me, Grob*n)
-{
- Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n);
- me->add_dependency (n);
-
- add_bound_item (dynamic_cast<Spanner*> (me), dynamic_cast<Item*> (n));
-}
-
-void
-Slur::de_uglyfy (Grob*me, Slur_bezier_bow* bb, Real default_height)
-{
- Real length = bb->curve_.control_[3][X_AXIS] ;
- Real ff = bb->fit_factor ();
- for (int i = 1; i < 3; i++)
- {
- Real ind = abs (bb->curve_.control_[ (i-1)*3][X_AXIS]
- - bb->curve_.control_[i][X_AXIS]) / length;
- Real h = bb->curve_.control_[i][Y_AXIS] * ff / length;
-
- Real f = default_height / length;
- SCM up = me->get_property ("de-uglify-parameters");
-
- Real c1 = gh_scm2double (ly_car (up));
- Real c2 = gh_scm2double (ly_cadr (up));
- Real c3 = gh_scm2double (ly_caddr (up));
-
- if (h > c1 * f)
- {
- h = c1 * f;
- }
- else if (h > c2 + c3 * ind)
- {
- h = c2 + c3 * ind;
- }
-
- bb->curve_.control_[i][Y_AXIS] = h * length;
- }
-
- bb->curve_.assert_sanity ();
-}
-
-
-
-Direction
-Slur::get_default_dir (Grob*me)
-{
- Link_array<Grob> encompasses =
- Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
-
- Direction d = DOWN;
- for (int i=0; i < encompasses.size (); i ++)
- {
- if (Note_column::dir (encompasses[i]) < 0)
- {
- d = UP;
- break;
- }
- }
- return d;
-}
-
-
-MAKE_SCHEME_CALLBACK (Slur, after_line_breaking,1);
-SCM
-Slur::after_line_breaking (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- if (!scm_ilength (me->get_property ("note-columns")))
- {
- me->suicide ();
- return SCM_UNSPECIFIED;
- }
- set_extremities (me);
- if (!gh_pair_p (me->get_property ("control-points")))
- set_control_points (me);
- return SCM_UNSPECIFIED;
-}
-
-
-void
-Slur::check_slope (Grob *me)
-{
- /*
- Avoid too steep slurs.
- */
- SCM s = me->get_property ("slope-limit");
- if (gh_number_p (s))
- {
- Array<Offset> encompass = get_encompass_offsets (me);
- Drul_array<Offset> attachment;
- attachment[LEFT] = encompass[0];
- attachment[RIGHT] = encompass.top ();
-
- Real dx = attachment[RIGHT][X_AXIS] - attachment[LEFT][X_AXIS];
- Real dy = attachment[RIGHT][Y_AXIS] - attachment[LEFT][Y_AXIS];
- if (!dx)
- return;
-
- Real slope = slope = abs (dy / dx);
-
- Real limit = gh_scm2double (s);
-
- if (slope > limit)
- {
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
- Direction dir = (Direction)gh_scm2int (me->get_property ("direction"));
- Direction d = (Direction) (- dir * (sign (dy)));
- SCM a = me->get_property ("attachment-offset");
- Drul_array<Offset> o;
- o[LEFT] = ly_scm2offset (index_get_cell (a, LEFT));
- o[RIGHT] = ly_scm2offset (index_get_cell (a, RIGHT));
- o[d][Y_AXIS] -= (limit - slope) * dx * dir / staff_space;
-
- o[d][Y_AXIS] *= get_grob_direction (me);
-
- me->set_property ("attachment-offset",
- gh_cons (ly_offset2scm (o[LEFT]),
- ly_offset2scm (o[RIGHT])));
- }
- }
-
-}
-
-/*
- Set 'attachment grob property, and return it.
-*/
-SCM
-Slur::set_extremities (Grob *me)
-{
- if (!get_grob_direction (me))
- set_grob_direction (me, get_default_dir (me));
-
- SCM att = me->get_property ("attachment");
- /*
- */
- if (!gh_pair_p (att))
- {
- programming_error ("attachment is not a cons?!");
- att = gh_cons (SCM_EOL, SCM_EOL);
- me->set_property ("attachment", att);
- }
-
- Direction dir = LEFT;
- do
- {
-
- if (!gh_symbol_p (index_get_cell (att, dir)))
- {
- SCM p = me->get_property ("extremity-function");
- SCM res = ly_symbol2scm ("head");
-
- if (gh_procedure_p (p))
- res = gh_call2 (p, me->self_scm (), gh_int2scm (dir));
-
- if (gh_symbol_p (res))
- index_set_cell (att, dir, res);
- }
- }
- while (flip (&dir) != LEFT);
-
- check_slope (me);
-
- return att;
-}
-
-
-Real
-Slur::get_boundary_notecolumn_y (Grob *me, Direction dir)
-{
- SCM cols = me->get_property ("note-columns");
-
- if(!gh_pair_p (cols))
- {
- programming_error ("No note-columns in slur?");
- me->suicide ();
- return 0.0;
- }
-
- if (dir == LEFT)
- cols = scm_reverse(cols);
-
- Grob *col = unsmob_grob (ly_car (cols));
- Grob *common[] =
- {
- 0,
- me->common_refpoint (col, Y_AXIS)
- };
- Real y;
- if (col == ((Spanner*)me)->get_bound (dir))
- {
- y = get_attachment (me, dir, common)[Y_AXIS];
- }
- else
- {
- y = encompass_offset (me, col, common)[Y_AXIS]
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
- return y;
-}
-
-Offset
-Slur::broken_trend_offset (Grob *me, Direction dir)
-{
- /*
- A broken slur should maintain the same vertical trend
- the unbroken slur would have had.
- */
- Offset o;
- if (Spanner *mother = dynamic_cast<Spanner*> (me->original_))
- {
- int k = broken_spanner_index (dynamic_cast<Spanner*> (me));
- int j = k + dir;
- if (j < 0 || j >= mother->broken_intos_.size ())
- return o;
-
- Grob *neighbour = mother->broken_intos_[j];
- if (dir == RIGHT)
- neighbour->set_property ("direction",
- me->get_property ("direction"));
- Real neighbour_y = get_boundary_notecolumn_y (neighbour, dir);
- Real y = get_boundary_notecolumn_y (me, -dir);
- int neighbour_cols = scm_ilength (neighbour->get_property ("note-columns"));
- int cols = scm_ilength (me->get_property ("note-columns"));
- o = Offset (0, (y*neighbour_cols + neighbour_y*cols) /
- (cols + neighbour_cols));
- }
- return o;
-}
-
-/*
- COMMON is size-2 array with common refpoints.
-
-UGH: this routine delivers offsets which are *not* relative to COMMON.
-
-UGH, we should take COMMON-Y as argument.
-*/
-Offset
-Slur::get_attachment (Grob *me, Direction dir,
- Grob **common)
-{
- SCM s = me->get_property ("attachment");
- if (!gh_pair_p (s) || !gh_symbol_p (index_get_cell (s, dir)))
- {
- s = set_extremities (me);
- }
-
- SCM a = (dir == LEFT) ? ly_car (s) : ly_cdr (s);
- Spanner*sp = dynamic_cast<Spanner*> (me);
- String str = ly_symbol2string (a);
-
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
- Real hs = staff_space / 2.0;
- Offset o;
-
- Direction slurdir = to_dir (me->get_property ("direction"));
-
- Grob *stem = 0;
- if (Note_column::has_interface (sp->get_bound (dir)))
- {
- Grob * n =sp->get_bound (dir);
- stem = Note_column::get_stem (n);
- if (stem)
- {
- Real x_extent;
- Grob *head = Note_column::first_head (n);
- if (head)
- x_extent = head->extent (head, X_AXIS).length ();
- else
- x_extent = n->extent (n, X_AXIS).length ();
-
- if (!head)
- {
- o = Offset (0, n->extent (n, Y_AXIS)[slurdir]);
- }
- else if (str == "head")
- {
- o = Offset (0, Stem::head_positions (stem)
- [slurdir] * hs);
- /*
- Default position is centered in X, on outer side of head Y
- */
- o += Offset (0.5 * x_extent,
- 0.5 * staff_space
- * slurdir);
- }
- else if (str == "alongside-stem")
- {
- o = Offset (0, Stem::chord_start_y (stem));
- /*
- Default position is on stem X, on outer side of head Y
- */
- o += Offset (x_extent * (1 + Stem::get_direction (stem)),
- 0.5 * staff_space
- * slurdir);
- }
- else if (str == "stem")
- {
- o = Offset (0, Stem::stem_end_position (stem) * hs);
- /*
- Default position is on stem X, at stem end Y
- */
- Real stem_thickness = Stem::thickness (stem);
- o += Offset (0.5 *
- x_extent * (1 + Stem::get_direction (stem))
- - ((dir + 1)/2) * stem_thickness
- + ((1 - slurdir)/2) * stem_thickness,
- 0);
- }
- }
- }
- /*
- If we're not a note_column, we can't be anything but a loose-end.
- But if user has set (attachment . (stem . stem)), our string is
- stem, not loose-end.
-
- Hmm, maybe after-line-breaking should set this to loose-end? */
- else // if (str == "loose-end")
- {
- SCM other_a = dir == LEFT ? ly_cdr (s) : ly_car (s);
- if (ly_symbol2string (other_a) != "loose-end")
- o = broken_trend_offset (me, dir);
- }
-
- SCM alist = me->get_property ("extremity-offset-alist");
- int stemdir = stem ? Stem::get_direction (stem) : 1;
- SCM l = scm_assoc
- (scm_list_n (a,
- gh_int2scm (stemdir * dir),
- gh_int2scm (slurdir * dir),
- SCM_UNDEFINED), alist);
+#include "slur-scoring.hh"
- if (l != SCM_BOOL_F)
- {
- Offset off = ly_scm2offset (ly_cdr (l)) * staff_space;
- off[X_AXIS] *= dir;
- off[Y_AXIS] *= slurdir;
- o += off;
- }
-
- /*
- What if get_bound () is not a note-column?
- */
- if (str != "loose-end"
- && sp->get_bound (dir)->common_refpoint (common[Y_AXIS], Y_AXIS) == common[Y_AXIS])
- {
- o[Y_AXIS] += sp->get_bound (dir)->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- Offset off = ly_scm2offset (index_get_cell (me->get_property
- ("attachment-offset"),
- dir)) * staff_space;
-
- off[Y_AXIS] *= slurdir;
- o += off;
- return o;
-}
-
-Offset
-Slur::encompass_offset (Grob*me,
- Grob* col,
- Grob **common)
-{
- Offset o;
- Grob* stem = unsmob_grob (col->get_property ("stem"));
-
- Direction dir = get_grob_direction (me);
-
- if (!stem)
- {
- programming_error ("No stem for note column?");
- o[X_AXIS] = col->relative_coordinate (common[X_AXIS], X_AXIS);
- o[Y_AXIS] = col->relative_coordinate (common[Y_AXIS], Y_AXIS);
- return o;
- }
- Direction stem_dir = get_grob_direction (stem);
- o[X_AXIS] = stem->relative_coordinate (0, X_AXIS);
-
- /*
- Simply set x to middle of notehead
- */
- Real x_extent;
- if (Grob *head = Note_column::first_head (col))
- x_extent = head->extent (head, X_AXIS).length ();
- else
- x_extent = col->extent (col, X_AXIS).length ();
- o[X_AXIS] -= 0.5 * stem_dir * x_extent;
-
- if ((stem_dir == dir)
- && !stem->extent (stem, Y_AXIS).is_empty ())
- {
- o[Y_AXIS] = stem->extent (common[Y_AXIS], Y_AXIS)[dir];
- }
- else
- {
- o[Y_AXIS] = col->extent (common[Y_AXIS], Y_AXIS)[dir];
- }
-
- /*
- leave a gap: slur mustn't touch head/stem
- */
- o[Y_AXIS] += dir * robust_scm2double (me->get_property ("y-free"), 0) *
- 1.0;
- return o;
-}
-
-Array<Offset>
-Slur::get_encompass_offsets (Grob *me)
-{
- Spanner*sp = dynamic_cast<Spanner*> (me);
- SCM eltlist = me->get_property ("note-columns");
- Grob *common[] = {common_refpoint_of_list (eltlist, me, X_AXIS),
- common_refpoint_of_list (eltlist, me, Y_AXIS)};
-
-
- common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
- common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (LEFT), X_AXIS);
-
- Link_array<Grob> encompasses = ly_scm2grobs (eltlist);
- Array<Offset> offsets;
-
- Offset origin (me->relative_coordinate (common[X_AXIS], X_AXIS),
- me->relative_coordinate (common[Y_AXIS], Y_AXIS));
-
- int first = 1;
- int last = encompasses.size () - 2;
-
- offsets.push (get_attachment (me, LEFT, common));
-
- /*
- left is broken edge
- */
- if (encompasses[0] != sp->get_bound (LEFT))
- {
- first--;
-
- // ?
- offsets[0][Y_AXIS] -=
- encompasses[0]->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- /*
- right is broken edge
- */
- if (encompasses.top () != sp->get_bound (RIGHT))
- {
- last++;
- }
-
- for (int i = first; i <= last; i++)
- {
- Offset o (encompass_offset (me, encompasses[i], common));
- offsets.push (o - origin);
- }
-
- offsets.push (Offset (sp->spanner_length (), 0) + get_attachment (me, RIGHT,common));
-
- if (encompasses[0] != sp->get_bound (LEFT))
- {
- offsets.top ()[Y_AXIS] -= encompasses.top ()->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- return offsets;
-}
-
-
-
-
-/*
- ugh ?
- */
MAKE_SCHEME_CALLBACK (Slur, height, 2);
SCM
Slur::height (SCM smob, SCM ax)
{
- Axis a = (Axis)gh_scm2int (ax);
- Grob * me = unsmob_grob (smob);
+ Axis a = (Axis)scm_to_int (ax);
+ Grob *me = unsmob_grob (smob);
assert (a == Y_AXIS);
SCM mol = me->get_uncached_stencil ();
Interval ext;
- if (Stencil * m = unsmob_stencil (mol))
+ if (Stencil *m = unsmob_stencil (mol))
ext = m->extent (a);
return ly_interval2scm (ext);
}
/*
Ugh should have dash-length + dash-period
- */
-MAKE_SCHEME_CALLBACK (Slur, print,1);
+*/
+MAKE_SCHEME_CALLBACK (Slur, print, 1);
SCM
Slur::print (SCM smob)
{
- Grob * me = unsmob_grob (smob);
+ Grob *me = unsmob_grob (smob);
if (!scm_ilength (me->get_property ("note-columns")))
{
me->suicide ();
Real ss = Staff_symbol_referencer::staff_space (me);
Bezier one = get_curve (me);
- // get_curve may suicide
- if (!scm_ilength (me->get_property ("note-columns")))
- return SCM_EOL;
-
Stencil a;
/*
TODO: replace dashed with generic property.
- */
- SCM d = me->get_property ("dashed");
- if (gh_number_p (d))
- a = Lookup::dashed_slur (one, thick, thick * robust_scm2double (d, 0));
+ */
+ SCM p = me->get_property ("dash-period");
+ SCM f = me->get_property ("dash-fraction");
+ if (scm_is_number (p) && scm_is_number (f))
+ a = Lookup::dashed_slur (one, thick, robust_scm2double (p, 1.0),
+ robust_scm2double (f, 0));
else
a = Lookup::slur (one, get_grob_direction (me) * base_thick * ss / 10.0,
thick);
+#if DEBUG_SLUR_SCORING
+ SCM quant_score = me->get_property ("quant-score");
+
+ if (to_boolean (me->get_layout ()
+ ->lookup_variable (ly_symbol2scm ("debug-slur-scoring")))
+ && scm_is_string (quant_score))
+ {
+ String str;
+ SCM properties = Font_interface::text_font_alist_chain (me);
+
+ Stencil tm = *unsmob_stencil (Text_interface::interpret_markup
+ (me->get_layout ()->self_scm (), properties,
+ quant_score));
+ a.add_at_edge (Y_AXIS, get_grob_direction (me), tm, 1.0, 0);
+ }
+#endif
+
return a.smobbed_copy ();
}
+Bezier
+Slur::get_curve (Grob *me)
+{
+ Bezier b;
+ int i = 0;
+ for (SCM s = me->get_property ("control-points"); s != SCM_EOL;
+ s = scm_cdr (s))
+ b.control_[i++] = ly_scm2offset (scm_car (s));
+
+ return b;
+}
+
void
-Slur::set_control_points (Grob*me)
+Slur::add_column (Grob *me, Grob *n)
{
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n);
+ add_bound_item (dynamic_cast<Spanner *> (me), dynamic_cast<Item *> (n));
+}
- SCM details = me->get_property ("details");
- SCM h_inf_scm = me->get_property ("height-limit");
- SCM r_0_scm = me->get_property ("ratio");
+void
+Slur::add_extra_encompass (Grob *me, Grob *n)
+{
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("encompass-objects"), n);
+}
- Real r_0 = robust_scm2double (r_0_scm, 1);
- Real h_inf = staff_space * gh_scm2double (h_inf_scm);
-
- Slur_bezier_bow bb (get_encompass_offsets (me),
- get_grob_direction (me),
- h_inf, r_0);
+MAKE_SCHEME_CALLBACK (Slur, outside_slur_callback, 2);
+SCM
+Slur::outside_slur_callback (SCM grob, SCM axis)
+{
+ Grob *script = unsmob_grob (grob);
+ Axis a = Axis (scm_to_int (axis));
+ assert (a == Y_AXIS);
+ Grob *slur = unsmob_grob (script->get_property ("slur"));
- if (bb.fit_factor () > 1.0)
- {
- Real length = bb.curve_.control_[3][X_AXIS];
- Real default_height = slur_height (length, h_inf, r_0);
-
- SCM ssb = me->get_property ("beautiful");
- Real sb = 0;
- if (gh_number_p (ssb))
- sb = gh_scm2double (ssb);
-
- bb.minimise_enclosed_area (sb, details);
- SCM sbf = scm_assq (ly_symbol2scm ("force-blowfit"), details);
- Real bff = 1.0;
- if (gh_pair_p (sbf) && gh_number_p (ly_cdr (sbf)))
- bff = gh_scm2double (ly_cdr (sbf));
-
- bb.curve_.control_[1][Y_AXIS] *= bff;
- bb.curve_.control_[2][Y_AXIS] *= bff;
- bb.blow_fit ();
-
-
- Real beautiful = length * default_height * sb;
- Real area = bb.get_enclosed_area ();
-
- /*
- Slurs that fit beautifully are not ugly
- */
- if (area > beautiful)
- de_uglyfy (me, &bb, default_height);
- }
+ if (!slur)
+ return scm_from_int (0);
- Bezier b = bb.get_bezier ();
+ Grob *cx = script->common_refpoint (slur, X_AXIS);
+ Grob *cy = script->common_refpoint (slur, Y_AXIS);
+ Bezier curve = Slur::get_curve (slur);
- SCM controls = SCM_EOL;
- for (int i= 4; i--;)
- {
- controls = gh_cons (ly_offset2scm (b.control_[i]), controls);
- /*
- BRRR WHURG.
- All these null control-points, where do they all come from?
- */
- if (i && b.control_[i][X_AXIS] == 0)
- {
- me->suicide ();
- return;
- }
- }
+ curve.translate (Offset (slur->relative_coordinate (cx, X_AXIS),
+ slur->relative_coordinate (cy, Y_AXIS)));
- me->set_property ("control-points", controls);
-}
-
-Bezier
-Slur::get_curve (Grob*me)
-{
- Bezier b;
- int i = 0;
+ Interval yext = robust_relative_extent (script, cy, Y_AXIS);
+ Interval xext = robust_relative_extent (script, cx, X_AXIS);
- SCM attach = me->get_property ("attachment");
- if (!gh_pair_p (attach))
- attach = set_extremities(me);
+ Real slur_padding = robust_scm2double (script->get_property ("slur-padding"),
+ 0.0); // todo: slur property, script property?
+ yext.widen (slur_padding);
+ Real EPS = 1e-3;
-
- if (!get_grob_direction (me)
- || ! gh_symbol_p (index_get_cell (attach, LEFT))
- || ! gh_symbol_p (index_get_cell (attach, RIGHT)))
- set_extremities (me);
-
- if (!gh_pair_p (me->get_property ("control-points")))
- set_control_points (me);
+ Interval bezext (curve.control_[0][X_AXIS],
+ curve.control_[3][X_AXIS]);
- // set_control_points may suicide
- if (!scm_ilength (me->get_property ("note-columns")))
- return b;
+ bool consider[] = { false, false, false };
+ Real ys[] = {0, 0, 0};
+ int k = 0;
+ bool do_shift = false;
- for (SCM s= me->get_property ("control-points"); s != SCM_EOL; s = ly_cdr (s))
+ for (int d = LEFT; d <= RIGHT; d++)
{
- b.control_[i] = ly_scm2offset (ly_car (s));
- i++;
+ Real x = xext.linear_combination ((Direction) d);
+ consider[k] = bezext.contains (x);
+
+ if (consider[k])
+ {
+ ys[k]
+ = (fabs (bezext[LEFT] - x) < EPS)
+ ? curve.control_[0][Y_AXIS]
+ : ((fabs (bezext[RIGHT] - x) < EPS)
+ ? curve.control_[3][Y_AXIS]
+ : curve.get_other_coordinate (X_AXIS, x));
+ consider[k] = true;
+
+ if (yext.contains (ys[k]))
+ do_shift = true;
+ }
}
+ Real offset = 0.0;
+ if (do_shift)
+ {
+ k = 0;
+ Direction dir = get_grob_direction (script);
+ for (int d = LEFT; d <= RIGHT; d++)
+ {
+ offset = dir * (dir * offset >? dir
+ * (ys[k] - yext[-dir] + dir * slur_padding));
+ k++;
+ }
+ }
+
+ return scm_make_real (offset);
+}
- Array<Offset> enc (get_encompass_offsets (me));
- Direction dir = get_grob_direction (me);
-
- Real x1 = enc[0][X_AXIS];
- Real x2 = enc.top ()[X_AXIS];
+static Direction
+get_default_dir (Grob *me)
+{
+ Link_array<Grob> encompasses
+ = extract_grob_array (me, ly_symbol2scm ("note-columns"));
- Real off = 0.0;
- for (int i=1; i < enc.size ()-1; i++)
+ Direction d = DOWN;
+ for (int i = 0; i < encompasses.size (); i++)
{
- Real x = enc[i][X_AXIS];
- if (x > x1 && x <x2)
+ if (Note_column::dir (encompasses[i]) < 0)
{
- Real y = b.get_other_coordinate (X_AXIS, x);
- off = off >? dir * (enc[i][Y_AXIS] - y);
+ d = UP;
+ break;
}
}
- b.translate (Offset (0, dir * off));
- return b;
+ return d;
}
+MAKE_SCHEME_CALLBACK (Slur, after_line_breaking, 1);
+SCM
+Slur::after_line_breaking (SCM smob)
+{
+ Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
+ if (!scm_ilength (me->get_property ("note-columns")))
+ {
+ me->suicide ();
+ return SCM_UNSPECIFIED;
+ }
+ if (!get_grob_direction (me))
+ set_grob_direction (me, get_default_dir (me));
+ if (scm_ilength (me->get_property ("control-points")) < 4)
+ set_slur_control_points (me);
+
+ return SCM_UNSPECIFIED;
+}
-ADD_INTERFACE (Slur,"slur-interface",
- "A slur",
- "attachment attachment-offset beautiful control-points dashed details de-uglify-parameters direction extremity-function extremity-offset-alist height-limit note-columns ratio slope-limit thickness y-free");
+ADD_INTERFACE (Slur, "slur-interface",
+ "A slur",
+ "positions quant-score excentricity encompass-objects control-points dash-period dash-fraction slur-details direction height-limit note-columns ratio thickness");
projects / lilypond.git / blobdiff