X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fslur.cc;h=bda0ff9ebf4b5c75e7d290ff9fbb3b2d00d22d2c;hb=75eebcb49e52d296b1da3e1074e0825d2c780db4;hp=3759cc75d50ba8bac67ccd82b1bed4542a8f9eae;hpb=08da6e274ea516076699e8e9bbdd48e5919cb526;p=lilypond.git diff --git a/lily/slur.cc b/lily/slur.cc index 3759cc75d5..bda0ff9ebf 100644 --- a/lily/slur.cc +++ b/lily/slur.cc @@ -1,701 +1,248 @@ /* - 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 - Jan Nieuwenhuizen + (c) 1996--2006 Han-Wen Nienhuys + Jan Nieuwenhuizen */ -/* - [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 "beam.hh" +#include "bezier.hh" #include "directional-element-interface.hh" -#include "group-interface.hh" -#include "slur.hh" +#include "font-interface.hh" +#include "pointer-group-interface.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-interface.hh" #include "warn.hh" -#include "slur-bezier-bow.hh" -#include "main.hh" -#include "group-interface.hh" -#include "staff-symbol-referencer.hh" -#include "spanner.hh" +#include "slur-scoring.hh" +#include "script-interface.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 (me), dynamic_cast (n)); -} -void -Slur::de_uglyfy (Grob*me, Slur_bezier_bow* bb, Real default_height) +MAKE_SCHEME_CALLBACK(Slur, calc_direction, 1) +SCM +Slur::calc_direction (SCM smob) { - 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 = ly_scm2double (ly_car (up)); - Real c2 = ly_scm2double (ly_cadr (up)); - Real c3 = ly_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 (); -} - + Grob *me = unsmob_grob (smob); + extract_grob_set (me, "note-columns", encompasses); + if (encompasses.is_empty ()) + { + me->suicide (); + return SCM_BOOL_F; + } -Direction -Slur::get_default_dir (Grob*me) -{ - Link_array encompasses = - Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns"); - Direction d = DOWN; - for (int i=0; i < encompasses.size (); i ++) + for (int i = 0; i < encompasses.size (); i++) { - if (Note_column::dir (encompasses[i]) < 0) + if (Note_column::dir (encompasses[i]) < 0) { d = UP; break; } } - return d; + return scm_from_int (d); } - -MAKE_SCHEME_CALLBACK (Slur, after_line_breaking,1); +MAKE_SCHEME_CALLBACK (Slur, height, 1); SCM -Slur::after_line_breaking (SCM smob) +Slur::height (SCM smob) { Grob *me = unsmob_grob (smob); - if (!scm_ilength (me->get_property ("note-columns"))) - { - me->suicide (); - return SCM_UNSPECIFIED; - } - set_extremities (me); - if (!ly_c_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 (ly_c_number_p (s)) - { - Array encompass = get_encompass_offsets (me); - Drul_array 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 = ly_scm2double (s); - - if (slope > limit) - { - Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me); - Direction dir = (Direction)ly_scm2int (me->get_property ("direction")); - Direction d = (Direction) (- dir * (sign (dy))); - SCM a = me->get_property ("attachment-offset"); - Drul_array 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", - scm_cons (ly_offset2scm (o[LEFT]), - ly_offset2scm (o[RIGHT]))); - } - } + // FIXME uncached + Stencil *m = me->get_stencil (); + return m ? ly_interval2scm (m->extent (Y_AXIS)) : ly_interval2scm (Interval ()); } /* - Set 'attachment grob property, and return it. + Ugh should have dash-length + dash-period */ +MAKE_SCHEME_CALLBACK (Slur, print, 1); 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 (!ly_c_pair_p (att)) - { - programming_error ("attachment is not a cons?!"); - att = scm_cons (SCM_EOL, SCM_EOL); - me->set_property ("attachment", att); - } - - Direction dir = LEFT; - do - { - - if (!ly_c_symbol_p (index_get_cell (att, dir))) - { - SCM p = me->get_property ("extremity-function"); - SCM res = ly_symbol2scm ("head"); - - if (ly_c_procedure_p (p)) - res = scm_call_2 (p, me->self_scm (), scm_int2num (dir)); - - if (ly_c_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) +Slur::print (SCM smob) { - SCM cols = me->get_property ("note-columns"); - - if (!ly_c_pair_p (cols)) + Grob *me = unsmob_grob (smob); + extract_grob_set (me, "note-columns", encompasses); + if (encompasses.is_empty ()) { - 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 (me->original_)) - { - int k = broken_spanner_index (dynamic_cast (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 SCM_EOL; } - return o; -} -/* - COMMON is size-2 array with common refpoints. - -UGH: this routine delivers offsets which are *not* relative to COMMON. + Real staff_thick = Staff_symbol_referencer::line_thickness (me); + Real base_thick = robust_scm2double (me->get_property ("thickness"), 1); + Real thick = base_thick * staff_thick; + Bezier one = get_curve (me); + Stencil a; -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 (!ly_c_pair_p (s) || !ly_c_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 (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); - } + TODO: replace dashed with generic property. + */ + 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) * staff_thick * 1.0, + thick); - SCM alist = me->get_property ("extremity-offset-alist"); - int stemdir = stem ? Stem::get_direction (stem) : 1; - SCM l = scm_assoc - (scm_list_n (a, - scm_int2num (stemdir * dir), - scm_int2num (slurdir * dir), - SCM_UNDEFINED), alist); +#if DEBUG_SLUR_SCORING + SCM quant_score = me->get_property ("quant-score"); - if (l != SCM_BOOL_F) + if (to_boolean (me->layout () + ->lookup_variable (ly_symbol2scm ("debug-slur-scoring"))) + && scm_is_string (quant_score)) { - Offset off = ly_scm2offset (ly_cdr (l)) * staff_space; - off[X_AXIS] *= dir; - off[Y_AXIS] *= slurdir; - o += off; - } + String str; + SCM properties = Font_interface::text_font_alist_chain (me); - /* - 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); + Stencil tm = *unsmob_stencil (Text_interface::interpret_markup + (me->layout ()->self_scm (), properties, + quant_score)); + a.add_at_edge (Y_AXIS, get_grob_direction (me), tm, 1.0, 0); } +#endif - Offset off = ly_scm2offset (index_get_cell (me->get_property - ("attachment-offset"), - dir)) * staff_space; - - off[Y_AXIS] *= slurdir; - o += off; - return o; + return a.smobbed_copy (); } -Offset -Slur::encompass_offset (Grob*me, - Grob* col, - Grob **common) +Bezier +Slur::get_curve (Grob *me) { - 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]; - } + 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)); - /* - 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; + return b; } -Array -Slur::get_encompass_offsets (Grob *me) +void +Slur::add_column (Grob *me, Grob *n) { - Spanner*sp = dynamic_cast (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 encompasses = ly_scm2grobs (eltlist); - Array 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; + Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n); + add_bound_item (dynamic_cast (me), dynamic_cast (n)); } - - - -/* - ugh ? - */ -MAKE_SCHEME_CALLBACK (Slur, height, 2); -SCM -Slur::height (SCM smob, SCM ax) +void +Slur::add_extra_encompass (Grob *me, Grob *n) { - Axis a = (Axis)ly_scm2int (ax); - Grob * me = unsmob_grob (smob); - assert (a == Y_AXIS); - - SCM mol = me->get_uncached_stencil (); - Interval ext; - if (Stencil * m = unsmob_stencil (mol)) - ext = m->extent (a); - return ly_interval2scm (ext); + Pointer_group_interface::add_grob (me, ly_symbol2scm ("encompass-objects"), n); } -/* - Ugh should have dash-length + dash-period - */ -MAKE_SCHEME_CALLBACK (Slur, print,1); + +MAKE_SCHEME_CALLBACK (Slur, outside_slur_callback, 2); SCM -Slur::print (SCM smob) +Slur::outside_slur_callback (SCM grob, SCM offset_scm) { - Grob * me = unsmob_grob (smob); - if (!scm_ilength (me->get_property ("note-columns"))) - { - me->suicide (); - return SCM_EOL; - } - - Real base_thick = robust_scm2double (me->get_property ("thickness"), 1); - Real thick = base_thick * Staff_symbol_referencer::line_thickness (me); + Grob *script = unsmob_grob (grob); + Grob *slur = unsmob_grob (script->get_object ("slur")); - Real ss = Staff_symbol_referencer::staff_space (me); - Bezier one = get_curve (me); + if (!slur) + return offset_scm; - // get_curve may suicide - if (!scm_ilength (me->get_property ("note-columns"))) - return SCM_EOL; + SCM avoid = script->get_property ("avoid-slur"); + if (avoid != ly_symbol2scm ("outside") + && avoid != ly_symbol2scm ("around")) + return offset_scm; + + Direction dir = get_grob_direction (script); + if (dir == CENTER) + return offset_scm; - Stencil a; + Grob *cx = script->common_refpoint (slur, X_AXIS); + Grob *cy = script->common_refpoint (slur, Y_AXIS); - /* - TODO: replace dashed with generic property. - */ - SCM d = me->get_property ("dashed"); - if (ly_c_number_p (d)) - a = Lookup::dashed_slur (one, thick, thick * robust_scm2double (d, 0)); - else - a = Lookup::slur (one, get_grob_direction (me) * base_thick * ss / 10.0, - thick); + Bezier curve = Slur::get_curve (slur); - return a.smobbed_copy (); -} - -void -Slur::set_control_points (Grob*me) -{ - Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me); + curve.translate (Offset (slur->relative_coordinate (cx, X_AXIS), + slur->relative_coordinate (cy, Y_AXIS))); - SCM details = me->get_property ("details"); - SCM h_inf_scm = me->get_property ("height-limit"); - SCM r_0_scm = me->get_property ("ratio"); + Interval yext = robust_relative_extent (script, cy, Y_AXIS); + Interval xext = robust_relative_extent (script, cx, X_AXIS); - Real r_0 = robust_scm2double (r_0_scm, 1); - Real h_inf = staff_space * ly_scm2double (h_inf_scm); + yext.translate (robust_scm2double (offset_scm, 0)); - Slur_bezier_bow bb (get_encompass_offsets (me), - get_grob_direction (me), - h_inf, r_0); - + + /* FIXME: slur property, script property? */ + Real slur_padding = robust_scm2double (script->get_property ("slur-padding"), + 0.0); + yext.widen (slur_padding); - if (bb.fit_factor () > 1.0) + Real EPS = 1e-3; + Interval bezext (curve.control_[0][X_AXIS], curve.control_[3][X_AXIS]); + bool consider[] = { false, false, false }; + Real ys[] = {0, 0, 0}; + bool do_shift = false; + + for (int d = LEFT, k = 0; d <= RIGHT; d++, k++) { - 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 (ly_c_number_p (ssb)) - sb = ly_scm2double (ssb); - - bb.minimise_enclosed_area (sb, details); - SCM sbf = scm_assq (ly_symbol2scm ("force-blowfit"), details); - Real bff = 1.0; - if (ly_c_pair_p (sbf) && ly_c_number_p (ly_cdr (sbf))) - bff = ly_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); - } - - Bezier b = bb.get_bezier (); + Real x = xext.linear_combination ((Direction) d); + consider[k] = bezext.contains (x); - - SCM controls = SCM_EOL; - for (int i= 4; i--;) - { - controls = scm_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) + if (consider[k]) { - me->suicide (); - return; + 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; + + /* Request shift if slur is contained script's Y, or if + script is inside slur and avoid == outside. */ + if (yext.contains (ys[k]) + || (dir * ys[k] > dir * yext[-dir] && avoid == ly_symbol2scm ("outside"))) + do_shift = true; } } - me->set_property ("control-points", controls); -} - -Bezier -Slur::get_curve (Grob*me) -{ - Bezier b; - int i = 0; - - SCM attach = me->get_property ("attachment"); - if (!ly_c_pair_p (attach)) - attach = set_extremities (me); - - - if (!get_grob_direction (me) - || ! ly_c_symbol_p (index_get_cell (attach, LEFT)) - || ! ly_c_symbol_p (index_get_cell (attach, RIGHT))) - set_extremities (me); - - if (!ly_c_pair_p (me->get_property ("control-points"))) - set_control_points (me); - - // set_control_points may suicide - if (!scm_ilength (me->get_property ("note-columns"))) - return b; - - for (SCM s= me->get_property ("control-points"); s != SCM_EOL; s = ly_cdr (s)) + Real avoidance_offset = 0.0; + if (do_shift) { - b.control_[i] = ly_scm2offset (ly_car (s)); - i++; + for (int d = LEFT, k = 0; d <= RIGHT; d++, k++) + avoidance_offset = dir * (max (dir * avoidance_offset, + dir * (ys[k] - yext[-dir] + dir * slur_padding))); } - Array enc (get_encompass_offsets (me)); - Direction dir = get_grob_direction (me); - - Real x1 = enc[0][X_AXIS]; - Real x2 = enc.top ()[X_AXIS]; - - Real off = 0.0; - for (int i=1; i < enc.size ()-1; i++) - { - Real x = enc[i][X_AXIS]; - if (x > x1 && x ? dir * (enc[i][Y_AXIS] - y); - } - } - b.translate (Offset (0, dir * off)); - return b; + return scm_from_double (scm_to_double (offset_scm) + avoidance_offset); } - -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", + + /* properties */ + "control-points " + "dash-fraction " + "dash-period " + "direction " + "eccentricity " + "encompass-objects " + "height-limit " + "note-columns " + "positions " + "quant-score " + "ratio " + "details " + "thickness ");