2 slur.cc -- implement score based Slur
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
14 #include "font-interface.hh"
15 #include "text-item.hh"
16 #include "directional-element-interface.hh"
17 #include "group-interface.hh"
18 #include "lily-guile.hh"
20 #include "note-column.hh"
21 #include "output-def.hh"
23 #include "slur-bezier-bow.hh"
26 #include "staff-symbol-referencer.hh"
27 #include "staff-symbol.hh"
35 - avoid collision with staff line
36 - curve around flag/stem for x coordinate
40 struct Encompass_info {
61 Interval slur_head_extent_;
75 TODO: put in details property.
77 struct Slur_score_parameters
79 int SLUR_REGION_SIZE ;
80 Real HEAD_ENCOMPASS_PENALTY ;
81 Real STEM_ENCOMPASS_PENALTY ;
82 Real CLOSENESS_FACTOR ;
83 Real EDGE_ATTRACTION_FACTOR ;
84 Real SAME_SLOPE_PENALTY ;
85 Real STEEPER_SLOPE_FACTOR ;
86 Real NON_HORIZONTAL_PENALTY ;
87 Real HEAD_STRICT_FREE_SPACE ;
89 Real MAX_SLOPE_FACTOR ;
90 Real FREE_HEAD_DISTANCE ;
91 Slur_score_parameters ();
95 init_score_param (Slur_score_parameters *score_param)
97 score_param->SLUR_REGION_SIZE = 5;
98 score_param->HEAD_ENCOMPASS_PENALTY = 1000.0;
99 score_param->STEM_ENCOMPASS_PENALTY = 30.0;
100 score_param->CLOSENESS_FACTOR = 10;
101 score_param->EDGE_ATTRACTION_FACTOR = 4;
102 score_param->SAME_SLOPE_PENALTY = 20;
103 score_param->STEEPER_SLOPE_FACTOR = 50;
104 score_param->NON_HORIZONTAL_PENALTY = 15;
105 score_param->HEAD_STRICT_FREE_SPACE = 0.2;
106 score_param->MAX_SLOPE = 1.1;
107 score_param->MAX_SLOPE_FACTOR = 10;
108 score_param->FREE_HEAD_DISTANCE = 0.3 ;
111 Slur_score_parameters::Slur_score_parameters()
113 init_score_param (this);
116 #define DEBUG_SLUR_QUANTING 1
119 Drul_array<Offset> attachment_;
123 #if DEBUG_SLUR_QUANTING
135 static void add_column (Grob *me, Grob *col);
136 DECLARE_SCHEME_CALLBACK (print, (SCM));
137 static void score_slopes (Grob * me, Grob *common[],
138 Slur_score_parameters * score_param,
140 Drul_array<Bound_info>,
141 Drul_array<Offset> base_attach,
142 Array<Slur_score> * scores);
144 static void score_edges (Grob * me, Grob *common[],
145 Slur_score_parameters * score_param,
147 Drul_array<Bound_info> extremes,
148 Drul_array<Offset> base_attach,
149 Array<Slur_score> * scores);
150 static void score_encompass (Grob * me, Grob *common[],
151 Slur_score_parameters*,
152 Drul_array<Bound_info>,
153 Drul_array<Offset>, Array<Slur_score> * scores);
155 static Encompass_info get_encompass_info (Grob *me,
158 static void set_interface (Grob*);
159 static bool has_interface (Grob*);
160 static Bezier get_curve (Grob *me);
161 static Bezier get_bezier (Grob *me, Drul_array<Offset>,Real,Real);
162 static Direction get_default_dir (Grob *me);
163 DECLARE_SCHEME_CALLBACK (after_line_breaking, (SCM));
164 DECLARE_SCHEME_CALLBACK (height, (SCM,SCM));
166 static void set_end_points (Grob*);
167 static Real get_boundary_notecolumn_y (Grob *me, Direction dir);
168 static Real broken_trend_y (Grob *me, Grob**, Direction dir);
169 static void set_control_points (Grob *me);
170 static Drul_array<Bound_info> get_bound_info (Spanner* me,
173 static void generate_curves (Grob*me, Array<Slur_score> *scores);
174 static Array<Slur_score> enumerate_attachments (Grob * me, Grob *common[],
175 Slur_score_parameters * score_param,
176 Drul_array<Bound_info> extremes,
177 Drul_array<Offset> base_attachment, Drul_array<Real> end_ys);
179 static Drul_array<Offset> get_base_attachments (Spanner*sp,
182 Drul_array<Bound_info> extremes);
184 static Drul_array<Real> get_y_attachment_range (Spanner*sp,
187 Drul_array<Bound_info> extremes,
188 Drul_array<Offset> base_attachment);
192 New_slur::broken_trend_y (Grob *me, Grob**common, Direction hdir)
195 A broken slur should maintain the same vertical trend
196 the unbroken slur would have had.
199 if (Spanner *mother = dynamic_cast<Spanner*> (me->original_))
201 int k = broken_spanner_index (dynamic_cast<Spanner*> (me));
203 if (j < 0 || j >= mother->broken_intos_.size ())
206 Grob *neighbor = mother->broken_intos_[j];
208 neighbor->set_property ("direction",
209 me->get_property ("direction"));
211 Spanner * common_mother = dynamic_cast<Spanner*> (common[Y_AXIS]->original_);
212 int common_k = broken_spanner_index (dynamic_cast<Spanner*> (common[Y_AXIS]));
213 int common_j = common_k + hdir;
215 if (common_j < 0 || common_j >= common_mother->broken_intos_.size())
219 Grob *common_next_system = common_mother->broken_intos_[common_j];
220 Link_array<Grob> neighbor_cols =
221 Pointer_group_interface__extract_grobs (neighbor, (Grob*)0, "note-columns");
223 Grob * neighbor_col = (hdir == RIGHT) ? neighbor_cols[0] : neighbor_cols.top ();
224 Grob * neighbor_common = common_next_system->common_refpoint (neighbor_col, Y_AXIS);
226 Direction vdir = get_grob_direction (me);
228 neighbor_col->extent (neighbor_common, Y_AXIS)
229 .linear_combination (int(neighbor_cols.size()==1 ? CENTER : vdir))
230 - common_next_system->relative_coordinate (neighbor_common, Y_AXIS);
232 Link_array<Grob> my_cols =
233 Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
235 Grob *extreme_col = (hdir == RIGHT) ? my_cols.top() : my_cols[0];
236 Real y = extreme_col->extent (common[Y_AXIS], Y_AXIS).linear_combination (vdir);
238 by = (y*neighbor_cols.size() + neighbor_y*my_cols.size()) /
239 (my_cols.size() + neighbor_cols.size());
245 New_slur::set_interface (Grob*me)
247 /* Copy to mutable list. */
248 me->set_property ("attachment",
249 ly_deep_copy (me->get_property ("attachment")));
253 New_slur::add_column (Grob*me, Grob*n)
255 Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n);
256 me->add_dependency (n);
258 add_bound_item (dynamic_cast<Spanner*> (me), dynamic_cast<Item*> (n));
262 New_slur::get_encompass_info (Grob *me,
266 Grob* stem = unsmob_grob (col->get_property ("stem"));
270 Direction dir = get_grob_direction (me);
274 programming_error ("No stem for note column?");
275 ei.x_ = col->relative_coordinate (common[X_AXIS], X_AXIS);
276 ei.head_ = ei.stem_ = col->extent (common[Y_AXIS], Y_AXIS)[get_grob_direction (me)];
279 Direction stem_dir = get_grob_direction (stem);
281 if (Grob *head = Note_column::first_head (col))
282 ei.x_ = head->extent (common[X_AXIS], X_AXIS).center ();
284 ei.x_ = col->extent (common[X_AXIS], X_AXIS).center ();
286 Grob * h = Stem::extremal_heads (stem)[Direction (dir)];
289 ei.head_ = ei.stem_ = col->extent (common[Y_AXIS], Y_AXIS)[dir];
293 ei.head_ = h->extent (common[Y_AXIS], Y_AXIS)[dir];
295 if ((stem_dir == dir)
296 && !stem->extent (stem, Y_AXIS).is_empty ())
298 ei.stem_ = stem->extent (common[Y_AXIS], Y_AXIS)[dir];
308 New_slur::get_default_dir (Grob*me)
310 Link_array<Grob> encompasses =
311 Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
314 for (int i=0; i < encompasses.size (); i ++)
316 if (Note_column::dir (encompasses[i]) < 0)
325 MAKE_SCHEME_CALLBACK (New_slur, after_line_breaking,1);
327 New_slur::after_line_breaking (SCM smob)
329 Spanner *me = dynamic_cast<Spanner*> (unsmob_grob (smob));
330 if (!scm_ilength (me->get_property ("note-columns")))
333 return SCM_UNSPECIFIED;
336 if (!get_grob_direction (me))
337 set_grob_direction (me, get_default_dir (me));
342 return SCM_UNSPECIFIED;
346 New_slur::get_bezier (Grob *me, Drul_array<Offset> extremes,
350 Array<Offset> encompasses;
351 encompasses.push (extremes[LEFT]);
352 encompasses.push (extremes[RIGHT]);
354 Slur_bezier_bow bb (encompasses,
355 get_grob_direction (me), h_inf, r_0);
357 return bb.get_bezier ();
361 Drul_array<Bound_info>
362 New_slur::get_bound_info (Spanner* me,
365 Drul_array<Bound_info> extremes;
367 Direction dir = get_grob_direction (me);
370 extremes[d].bound_ = me->get_bound (d);
372 if (Note_column::has_interface (extremes[d].bound_))
374 extremes[d].note_column_ = extremes[d].bound_;
375 extremes[d].stem_ = Note_column::get_stem (extremes[d].note_column_);
376 extremes[d].stem_dir_ = get_grob_direction (extremes[d].stem_);
377 extremes[d].stem_extent_[X_AXIS] = extremes[d].stem_->extent (common[X_AXIS], X_AXIS);
378 extremes[d].stem_extent_[Y_AXIS] = extremes[d].stem_->extent (common[Y_AXIS], Y_AXIS);
379 extremes[d].slur_head_ = Stem::extremal_heads (extremes[d].stem_)[dir];
380 extremes[d].slur_head_extent_ = extremes[d].slur_head_->extent (common[X_AXIS], X_AXIS);
381 extremes[d].staff_ = Staff_symbol_referencer::get_staff_symbol (extremes[d].slur_head_);
385 extremes[d].neighbor_y_ = broken_trend_y (me, common, d);
387 } while (flip (&d) != LEFT);
393 New_slur::set_end_points (Grob *me)
395 Link_array<Grob> columns =
396 Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
398 Slur_score_parameters params;
400 if (columns.is_empty ())
406 SCM eltlist = me->get_property ("note-columns");
407 Grob *common[] = {common_refpoint_of_list (eltlist, me, X_AXIS),
408 common_refpoint_of_list (eltlist, me, Y_AXIS)};
411 Spanner* sp = dynamic_cast<Spanner*> (me);
412 common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
413 common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (LEFT), X_AXIS);
416 Drul_array<Bound_info> extremes = get_bound_info (sp, common);
417 Drul_array<Offset> base_attachment = get_base_attachments (sp, common, extremes);
418 Drul_array<Real> end_ys = get_y_attachment_range (sp, common, extremes, base_attachment);
419 Array<Slur_score> scores = enumerate_attachments (me, common,
420 ¶ms, extremes, base_attachment, end_ys);
421 generate_curves (me, &scores);
423 score_edges (me, common, ¶ms,extremes, base_attachment, &scores);
424 score_slopes (me, common, ¶ms,extremes, base_attachment, &scores);
425 score_encompass (me, common, ¶ms,extremes, base_attachment, &scores);
429 for (int i = scores.size (); i--;)
431 if (scores[i].score_ < opt)
433 opt = scores[i].score_;
438 #if DEBUG_SLUR_QUANTING
439 SCM inspect_quants = me->get_property ("inspect-quants");
440 if (to_boolean (me->get_paper ()->lookup_variable (ly_symbol2scm ("debug-slur-quanting")))
441 && ly_c_pair_p (inspect_quants))
443 Drul_array<Real> ins = ly_scm2interval (inspect_quants);
447 for (; i < scores.size (); i ++)
449 Real d =fabs (scores[i].attachment_[LEFT][Y_AXIS] - ins[LEFT])
450 + fabs (scores[i].attachment_[RIGHT][Y_AXIS] - ins[RIGHT]);
458 programming_error ("Could not find quant.");
462 scores[opt_idx].score_card_ += to_string ("i%d", opt_idx);
465 me->set_property ("quant-score",
466 scm_makfrom0str (scores[opt_idx].score_card_.to_str0 ()));
469 Bezier const &b = scores[opt_idx].curve_;
471 SCM controls = SCM_EOL;
472 for (int i = 4; i--;)
474 Offset o = b.control_[i] -
475 Offset (me->relative_coordinate (common[X_AXIS], X_AXIS),
476 me->relative_coordinate (common[Y_AXIS], Y_AXIS));
478 controls = scm_cons (ly_offset2scm (o), controls);
481 me->set_property ("control-points", controls);
486 New_slur::get_y_attachment_range (Spanner*me,
488 Drul_array<Bound_info> extremes,
489 Drul_array<Offset> base_attachment)
491 Drul_array<Real> end_ys;
492 Direction dir = get_grob_direction (me);
495 if (extremes[d].note_column_)
497 end_ys[d] = dir * ((dir * (base_attachment[d][Y_AXIS] + 4.0 *dir))
498 >? (dir * (dir + extremes[d].note_column_->extent(common[Y_AXIS],Y_AXIS)[dir]))
499 >? (dir * base_attachment[-d][Y_AXIS])
504 end_ys[d] = extremes[d].neighbor_y_ + 4.0 * dir ;
506 } while (flip (&d) != LEFT);
512 New_slur::get_base_attachments (Spanner*me,
514 Drul_array<Bound_info> extremes)
516 Link_array<Grob> columns =
517 Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
518 Drul_array<Offset> base_attachment;
521 Slur_score_parameters params;
523 Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
525 Direction dir = get_grob_direction (me);
529 Grob *stem = extremes[d].stem_;
530 Grob *head = extremes[d].slur_head_;
533 if (!extremes[d].note_column_)
535 y = extremes[d].neighbor_y_;
537 x = extremes[d].bound_->extent (common[X_AXIS], X_AXIS)[d];
539 x = me->get_broken_left_end_align ();
544 && extremes[d].stem_dir_ == dir
545 && Stem::get_beaming (stem, -d)
546 && columns.size () > 2
549 y = extremes[d].stem_extent_[Y_AXIS][dir];
553 y = head->extent (common[Y_AXIS], Y_AXIS)[dir];
555 y += dir * 0.5 * staff_space;
557 Real pos = 2.0 * (y - extremes[d].staff_->relative_coordinate (common[Y_AXIS], Y_AXIS))
558 / Staff_symbol::staff_space (extremes[d].staff_);
563 if (fabs (pos - round (pos)) < 0.2
564 && Staff_symbol_referencer::on_staffline (head, (int) rint (pos))
565 && Staff_symbol_referencer::line_count (head) -1 >= rint (pos)
567 y += staff_space * dir / 10 ;
569 Grob * fh = Note_column::first_head (extremes[d].note_column_);
570 x = fh->extent (common[X_AXIS], X_AXIS).linear_combination (CENTER);
572 base_attachment[d] = Offset (x, y);
574 } while (flip (&d) != LEFT);
576 return base_attachment;
582 New_slur::generate_curves (Grob*me, Array<Slur_score> *scores)
586 Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
588 Real r_0 = robust_scm2double (me->get_property ("ratio"), 1);
589 Real h_inf = staff_space * ly_scm2double (me->get_property ("height-limit"));
590 for (int i = scores->size(); i-- ;)
592 (*scores)[i].curve_ = get_bezier (me, (*scores)[i].attachment_,
598 New_slur::enumerate_attachments (Grob * me, Grob *common[],
599 Slur_score_parameters * score_param,
600 Drul_array<Bound_info> extremes,
601 Drul_array<Offset> base_attachment,
602 Drul_array<Real> end_ys)
605 Array<Slur_score> scores;
607 Direction dir = get_grob_direction (me);
608 Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
610 Drul_array<Offset> os;
611 os[LEFT] = base_attachment[LEFT];
612 Real minimum_length = staff_space * robust_scm2double (me->get_property ("minimum-length"),
615 for (int i = 0; dir * os[LEFT][Y_AXIS] <= dir * end_ys[LEFT]; i++)
617 os[RIGHT] = base_attachment[RIGHT];
618 for (int j = 0; dir *os[RIGHT][Y_AXIS] <= dir * end_ys[RIGHT]; j++)
625 os[d][X_AXIS] = base_attachment[d][X_AXIS];
626 if (extremes[d].stem_
627 && !Stem::is_invisible (extremes[d].stem_)
628 && extremes[d].stem_dir_ == dir
631 if (extremes[d].stem_extent_[Y_AXIS].contains (os[d][Y_AXIS]))
633 os[d][X_AXIS] -= d * extremes[d].slur_head_extent_.length ();
635 else if (dir *extremes[d].stem_extent_[Y_AXIS][dir] < dir * os[d][Y_AXIS])
637 os[d][X_AXIS] = extremes[d].stem_extent_[X_AXIS].center();
640 } while (flip (&d) != LEFT);
642 Offset dz = os[RIGHT] - os[LEFT];
643 if (dz[X_AXIS] < minimum_length
644 || fabs (dz[Y_AXIS] / dz[X_AXIS]) > score_param->MAX_SLOPE
648 if (extremes[d].slur_head_)
649 os[d][X_AXIS] = extremes[d].slur_head_extent_.center ();
650 } while (flip (&d) != LEFT);
656 os[RIGHT][Y_AXIS] += dir * staff_space / 2;
659 os[LEFT][Y_AXIS] += dir * staff_space /2 ;
667 New_slur::score_encompass (Grob * me, Grob *common[],
668 Slur_score_parameters * score_param,
670 Drul_array<Bound_info> extremes,
671 Drul_array<Offset> base_attach,
672 Array<Slur_score> * scores)
674 Link_array<Grob> encompasses =
675 Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
676 Direction dir = get_grob_direction (me);
678 Array<Encompass_info> infos;
680 for (int i = 0; i < encompasses.size(); i++)
681 infos.push (get_encompass_info (me, encompasses[i], common));
683 for (int i =0 ; i < scores->size (); i++)
685 Bezier const &bez (scores->elem (i).curve_);
687 for (int j = 0; j < infos.size(); j++)
689 Real x = infos[j].x_;
691 if (!(x < scores->elem (i).attachment_[RIGHT][X_AXIS]
692 && x > scores->elem (i).attachment_[LEFT][X_AXIS]))
695 Real y = bez.get_other_coordinate (X_AXIS, x);
696 Real head_dy = (y - infos[j].head_);
697 if (dir * head_dy < 0)
699 demerit += score_param->HEAD_ENCOMPASS_PENALTY;
704 (head_dy) ? (1/(fabs (head_dy) - 1/score_param->FREE_HEAD_DISTANCE))
705 : score_param->HEAD_ENCOMPASS_PENALTY;
706 hd = (hd >? 0)<? score_param->HEAD_ENCOMPASS_PENALTY;
711 if (dir * (y - infos[j].stem_) < 0)
712 demerit += score_param->STEM_ENCOMPASS_PENALTY;
713 else if (j && j < encompasses.size () - 1)
716 ext.add_point (infos[j].stem_);
717 ext.add_point (infos[j].head_);
719 demerit += - score_param->CLOSENESS_FACTOR * (dir * (y - (ext[dir] + dir * score_param->FREE_HEAD_DISTANCE)) <? 0) /
724 #if DEBUG_SLUR_QUANTING
725 (*scores)[i].score_card_ += to_string ("C%.2f", demerit);
728 (*scores)[i].score_ += demerit;
734 New_slur::score_edges (Grob * me, Grob *common[],
735 Slur_score_parameters * score_param,
737 Drul_array<Bound_info> extremes,
738 Drul_array<Offset> base_attach,
739 Array<Slur_score> * scores)
741 Direction dir = get_grob_direction (me);
743 for (int i =0 ; i < scores->size (); i++)
748 Real y = scores->elem (i).attachment_[d][Y_AXIS];
749 Real dy = fabs (y - base_attach[d][Y_AXIS]);
751 Real factor = score_param->EDGE_ATTRACTION_FACTOR;
754 score_param->EDGE_ATTRACTION_FACTOR
755 * fabs (scores->elem (i).attachment_[d][Y_AXIS] - base_attach[d][Y_AXIS]);
757 if (extremes[d].stem_
758 && extremes[d].stem_dir_ == dir
759 && !Stem::get_beaming (extremes[d].stem_, -d)
763 (*scores)[i].score_ += demerit;
764 #if DEBUG_SLUR_QUANTING
765 (*scores)[i].score_card_ += to_string ("E%.2f", demerit);
767 } while (flip (&d) != LEFT);
772 New_slur::score_slopes (Grob * me, Grob *common[],
773 Slur_score_parameters*score_param,
774 Drul_array<Bound_info> extremes,
775 Drul_array<Offset> base_attach,
776 Array<Slur_score> * scores)
778 Direction dir = get_grob_direction (me);
784 if (extremes[d].slur_head_)
785 ys[d] = extremes[d].slur_head_ ->relative_coordinate (common[Y_AXIS], Y_AXIS);
787 ys[d] = extremes[d].neighbor_y_;
788 } while (flip (&d) != LEFT);
791 (extremes[LEFT].stem_ && Stem::get_beam (extremes[LEFT].stem_))
792 || (extremes[RIGHT].stem_ && Stem::get_beam (extremes[RIGHT].stem_));
794 Real dy = ys[RIGHT] - ys[LEFT];
795 for (int i =0 ; i < scores->size (); i++)
797 Offset slur_dz = (*scores)[i].attachment_[RIGHT]
798 - (*scores)[i].attachment_[LEFT];
800 Real slur_dy = slur_dz[Y_AXIS];
806 demerit += score_param->STEEPER_SLOPE_FACTOR * (dir * (fabs (slur_dy) - fabs (dy)) >? 0);
808 demerit += ((fabs (slur_dy/slur_dz[X_AXIS]) - score_param->MAX_SLOPE)>?0) * score_param->MAX_SLOPE_FACTOR;
810 if (sign (dy) == 0 &&
812 demerit += score_param->NON_HORIZONTAL_PENALTY;
816 && sign (slur_dy) != sign (dy))
818 has_beams ? score_param->SAME_SLOPE_PENALTY/10 : score_param->SAME_SLOPE_PENALTY;
820 #if DEBUG_SLUR_QUANTING
821 (*scores)[i].score_card_ += to_string ("S%.2f",d);
823 (*scores)[i].score_ += demerit;
829 New_slur::get_curve (Grob*me)
833 for (SCM s= me->get_property ("control-points"); s != SCM_EOL; s = ly_cdr (s))
835 b.control_[i++] = ly_scm2offset (ly_car (s));
842 MAKE_SCHEME_CALLBACK (New_slur, height, 2);
844 New_slur::height (SCM smob, SCM ax)
846 Axis a = (Axis)ly_scm2int (ax);
847 Grob * me = unsmob_grob (smob);
848 assert (a == Y_AXIS);
850 SCM mol = me->get_uncached_stencil ();
852 if (Stencil * m = unsmob_stencil (mol))
854 return ly_interval2scm (ext);
858 Ugh should have dash-length + dash-period
860 MAKE_SCHEME_CALLBACK (New_slur, print,1);
862 New_slur::print (SCM smob)
864 Grob * me = unsmob_grob (smob);
865 if (!scm_ilength (me->get_property ("note-columns")))
871 Real base_thick = robust_scm2double (me->get_property ("thickness"), 1);
872 Real thick = base_thick * Staff_symbol_referencer::line_thickness (me);
874 Real ss = Staff_symbol_referencer::staff_space (me);
875 Bezier one = get_curve (me);
880 TODO: replace dashed with generic property.
882 SCM d = me->get_property ("dashed");
883 if (ly_c_number_p (d))
884 a = Lookup::dashed_slur (one, thick, thick * robust_scm2double (d, 0));
886 a = Lookup::slur (one, get_grob_direction (me) * base_thick * ss / 10.0,
889 #if DEBUG_SLUR_QUANTING
890 SCM quant_score = me->get_property ("quant-score");
892 if (to_boolean (me->get_paper ()->lookup_variable (ly_symbol2scm ("debug-slur-quanting"))) &&
893 ly_c_string_p (quant_score))
896 SCM properties = Font_interface::text_font_alist_chain (me);
898 Stencil tm = *unsmob_stencil (Text_item::interpret_markup
899 (me->get_paper ()->self_scm (), properties, quant_score));
900 a.add_at_edge (Y_AXIS, get_grob_direction (me), tm, 1.0, 0);
904 return a.smobbed_copy ();
911 ADD_INTERFACE (New_slur, "new-slur-interface",
913 "control-points dashed details direction height-limit note-columns ratio slope-limit thickness");