/*
- slur.cc -- implement Slur
+ slur.cc -- implement external interface for Slur
source file of the GNU LilyPond music typesetter
- (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
-/*
- [TODO]
- * fix broken interstaff slurs
- * begin and end should be treated as a/acknowledge Scripts.
- * broken slur should have uniform trend
- * smart changing of endings
- * smart changing of (Y-?)offsets to avoid ugly beziers
- (along-side-stem)
- */
-
-#include "directional-element-interface.hh"
-#include "group-interface.hh"
#include "slur.hh"
+#include "grob-info.hh"
+#include "grob-array.hh"
+#include "beam.hh"
+#include "bezier.hh"
+#include "directional-element-interface.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 "stem.hh"
-#include "paper-column.hh"
-#include "molecule.hh"
-#include "debug.hh"
-#include "slur-bezier-bow.hh"
-#include "main.hh"
-#include "group-interface.hh"
-#include "staff-symbol-referencer.hh"
+#include "output-def.hh"
#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
+#include "staff-symbol.hh"
+#include "stem.hh"
+#include "text-interface.hh"
+#include "tie.hh"
+#include "warn.hh"
+#include "slur-scoring.hh"
+#include "separation-item.hh"
+#include "script-interface.hh"
-void
-Slur::set_interface (Score_element*me)
-{
- me->set_elt_property ("attachment", gh_cons (SCM_BOOL_F, SCM_BOOL_F));
- me->set_interface (ly_symbol2scm ("slur-interface"));
-}
-void
-Slur::add_column (Score_element*me, Score_element*n)
+MAKE_SCHEME_CALLBACK(Slur, calc_direction, 1)
+SCM
+Slur::calc_direction (SCM smob)
{
- if (!gh_pair_p (n->get_elt_property ("note-heads")))
- warning (_ ("Putting slur over rest. Ignoring."));
- else
- {
- Pointer_group_interface (me, "note-columns").add_element (n);
- me->add_dependency (n);
- }
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "note-columns", encompasses);
- add_bound_item (dynamic_cast<Spanner*> (me), dynamic_cast<Item*>(n));
-}
-
-void
-Slur::de_uglyfy (Score_element*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++)
+ if (encompasses.empty ())
{
- 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;
- Real c1 = me->paper_l ()->get_var ("bezier_control1");
- Real c2 = me->paper_l ()->get_var ("bezier_control2");
- Real c3 = me->paper_l ()->get_var ("bezier_control3");
- 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 ();
-}
+ me->suicide ();
+ return SCM_BOOL_F;
+ }
-Direction
-Slur::get_default_dir (Score_element*me)
-{
- Link_array<Score_element> encompass_arr =
- Pointer_group_interface__extract_elements (me, (Score_element*)0, "note-columns");
-
Direction d = DOWN;
- for (int i=0; i < encompass_arr.size (); i ++)
+ for (vsize i = 0; i < encompasses.size (); i++)
{
- if (Note_column::dir (encompass_arr[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);
+MAKE_SCHEME_CALLBACK (Slur, pure_height, 3);
SCM
-Slur::after_line_breaking (SCM smob)
+Slur::pure_height (SCM smob, SCM start_scm, SCM end_scm)
{
- Score_element *me = unsmob_element (smob);
- if (!scm_ilength (me->get_elt_property ("note-columns")))
- {
- me->suicide ();
- return SCM_UNSPECIFIED;
- }
- set_extremities (me);
- set_control_points (me);
- return SCM_UNSPECIFIED;
-}
+ Grob *me = unsmob_grob (smob);
+ int start = scm_to_int (start_scm);
+ int end = scm_to_int (end_scm);
+ Real height = robust_scm2double (me->get_property ("height-limit"), 2.0);
-void
-Slur::set_extremities (Score_element*me)
-{
- if (!Directional_element_interface (me).get ())
- Directional_element_interface (me).set (get_default_dir (me));
+ extract_grob_set (me, "note-columns", encompasses);
+ Interval ret;
- Direction dir = LEFT;
- do
- {
- if (!gh_symbol_p (index_cell (me->get_elt_property ("attachment"), dir)))
- {
-
- // for (SCM s = get_elt_property ("slur-extremity-rules"); s != SCM_EOL; s = gh_cdr (s))
- for (SCM s = scm_eval2 (ly_symbol2scm ("slur-extremity-rules"),
- SCM_EOL);
- s != SCM_EOL; s = gh_cdr (s))
- {
- SCM r = gh_call2 (gh_caar (s), me->self_scm (),
- gh_int2scm ((int)dir));
- if (r != SCM_BOOL_F)
- {
- index_set_cell (me->get_elt_property ("attachment"), dir,
- gh_cdar (s));
- break;
- }
- }
- }
- }
- while (flip (&dir) != LEFT);
-}
+ Grob *parent = me->get_parent (Y_AXIS);
+ if (common_refpoint_of_array (encompasses, me, Y_AXIS) != parent)
+ /* this could happen if, for example, we are a cross-staff slur.
+ in this case, we want to be ignored */
+ return ly_interval2scm (Interval ());
-Real
-Slur::get_first_notecolumn_y (Score_element *me, Direction dir)
-{
- Score_element *col = dir == LEFT
- ? unsmob_element (gh_car (scm_reverse (me->get_elt_property
- ("note-columns"))))
- : unsmob_element
- (gh_car (me->get_elt_property ("note-columns")));
-
- Score_element *common[] =
- {
- 0,
- me->common_refpoint (col, Y_AXIS)
- };
- Real y;
- if (col == ((Spanner*)me)->get_bound (dir))
+ for (vsize i = 0; i < encompasses.size (); i++)
{
- y = get_attachment (me, dir, common)[Y_AXIS];
+ Interval d = encompasses[i]->pure_height (parent, start, end);
+ if (!d.is_empty ())
+ ret.unite (d);
}
- else
- {
- y = encompass_offset (me, col, common)[Y_AXIS]
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
- return y;
-}
-Offset
-Slur::broken_trend_offset (Score_element *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_l_))
- {
- for (int i = dir == LEFT ? 0 : mother->broken_into_l_arr_.size ();
- dir == LEFT ? i < mother->broken_into_l_arr_.size () : i;
- dir == LEFT ? i++ : --i)
- {
- if (mother->broken_into_l_arr_[i - dir] == me)
- {
- Score_element *neighbour = mother->broken_into_l_arr_[i];
- if (dir == RIGHT)
- neighbour->set_elt_property ("direction",
- me->get_elt_property ("direction"));
- Real neighbour_y = get_first_notecolumn_y (neighbour, dir);
- Real y = get_first_notecolumn_y (me, -dir);
- o = Offset (0, (y + neighbour_y) / 2);
- break;
- }
- }
- }
- return o;
+ ret.widen (height * 0.5);
+ return ly_interval2scm (ret);
}
-Offset
-Slur::get_attachment (Score_element*me,Direction dir,
- Score_element **common)
+MAKE_SCHEME_CALLBACK (Slur, height, 1);
+SCM
+Slur::height (SCM smob)
{
- SCM s = me->get_elt_property ("attachment");
- if (!gh_symbol_p (index_cell (s, dir)))
- {
- set_extremities (me);
- s = me->get_elt_property ("attachment");
- }
- SCM a = dir == LEFT ? gh_car (s) : gh_cdr (s);
- Spanner*sp = dynamic_cast<Spanner*>(me);
- String str = ly_symbol2string (a);
- Real ss = Staff_symbol_referencer::staff_space ((Score_element*)me);
- Real hs = ss / 2.0;
- Offset o;
-
- Score_element *stem = 0;
- if (Note_column::has_interface (sp->get_bound (dir)))
- {
- Score_element * n =sp->get_bound (dir);
- if (Score_element *stem = Note_column::stem_l (n))
- {
-
- if (str == "head")
- {
- o = Offset (0, Stem::head_positions (stem)
- [Directional_element_interface (me).get ()] * hs);
- /*
- Default position is centered in X, on outer side of head Y
- */
- o += Offset (0.5 * n->extent (X_AXIS).length (),
- 0.5 * ss * Directional_element_interface (me).get ());
- }
- else if (str == "alongside-stem")
- {
- o = Offset (0, Stem::chord_start_f (stem));
- /*
- Default position is on stem X, on outer side of head Y
- */
- o += Offset (n->extent (X_AXIS).length ()
- * (1 + Stem::get_direction (stem)),
- 0.5 * ss * Directional_element_interface (me).get ());
- }
- else if (str == "stem")
- {
- o = Offset (0, Stem::stem_end_position (stem) * hs);
- /*
- Default position is on stem X, at stem end Y
- */
- o += Offset (0.5 *
- (n->extent (X_AXIS).length ()
- - stem->extent (X_AXIS).length ())
- * (1 + Stem::get_direction (stem)),
- 0);
- }
- }
- }
- else if (str == "loose-end")
- {
- SCM other_a = dir == LEFT ? gh_cdr (s) : gh_car (s);
- if (ly_symbol2string (other_a) != "loose-end")
- {
-#if 0
- /*
- The braindead way: horizontal
- */
- o = Offset (0, get_attachment (me, -dir, common)[Y_AXIS]);
-#else
- o = broken_trend_offset (me, dir);
-#endif
+ Grob *me = unsmob_grob (smob);
-
- }
-
- }
-
- SCM l = scm_assoc
- (scm_listify (a,
- gh_int2scm (stem ? Stem::get_direction (stem) : 1 * dir),
- gh_int2scm (Directional_element_interface (me).get () * dir),
- SCM_UNDEFINED),
- scm_eval2 (ly_symbol2scm ("slur-extremity-offset-alist"), SCM_EOL));
-
- if (l != SCM_BOOL_F)
- {
- o += ly_scm2offset (gh_cdr (l)) * ss * dir;
- }
-
- /*
- 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);
- }
-
- return o;
+ // FIXME uncached
+ Stencil *m = me->get_stencil ();
+ return m ? ly_interval2scm (m->extent (Y_AXIS))
+ : ly_interval2scm (Interval ());
}
-Offset
-Slur::encompass_offset (Score_element*me,
- Score_element* col,
- Score_element **common)
+/*
+ Ugh should have dash-length + dash-period
+*/
+MAKE_SCHEME_CALLBACK (Slur, print, 1);
+SCM
+Slur::print (SCM smob)
{
- Offset o;
- Score_element* stem_l = unsmob_element (col->get_elt_property ("stem"));
-
- Direction dir = Directional_element_interface (me).get ();
-
- if (!stem_l)
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "note-columns", encompasses);
+ if (encompasses.empty ())
{
- warning (_ ("Slur over rest?"));
- o[X_AXIS] = col->relative_coordinate (common[X_AXIS], X_AXIS);
- o[Y_AXIS] = col->relative_coordinate (common[Y_AXIS], Y_AXIS);
- return o;
+ me->suicide ();
+ return SCM_EOL;
}
- Direction stem_dir = Directional_element_interface (stem_l).get ();
- o[X_AXIS] = stem_l->relative_coordinate (0, X_AXIS);
-
- /*
- Simply set x to middle of notehead
- */
- o[X_AXIS] -= 0.5 * stem_dir * col->extent (X_AXIS).length ();
+ Real staff_thick = Staff_symbol_referencer::line_thickness (me);
+ Real base_thick = staff_thick
+ * robust_scm2double (me->get_property ("thickness"), 1);
+ Real line_thick = staff_thick
+ * robust_scm2double (me->get_property ("line-thickness"), 1);
- if ((stem_dir == dir)
- && !stem_l->extent (Y_AXIS).empty_b ())
- {
- o[Y_AXIS] = stem_l->relative_coordinate (common[Y_AXIS], Y_AXIS); // iuhg
- o[Y_AXIS] += stem_l->extent (Y_AXIS)[dir];
- }
- else
- {
- o[Y_AXIS] = col->relative_coordinate (common[Y_AXIS], Y_AXIS); // ugh
- o[Y_AXIS] += col->extent (Y_AXIS)[dir];
- }
+ Bezier one = get_curve (me);
+ Stencil a;
/*
- leave a gap: slur mustn't touch head/stem
- */
- o[Y_AXIS] += dir * me->paper_l ()->get_var ("slur_y_free");
- return o;
-}
-
-Array<Offset>
-Slur::get_encompass_offset_arr (Score_element*me)
-{
- Spanner*sp = dynamic_cast<Spanner*>(me);
- SCM eltlist = me->get_elt_property ("note-columns");
- Score_element *common[] = {me->common_refpoint (eltlist,X_AXIS),
- me->common_refpoint (eltlist,Y_AXIS)};
+ 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, line_thick, robust_scm2double (p, 1.0),
+ robust_scm2double (f, 0));
+ else
+ a = Lookup::slur (one,
+ get_grob_direction (me) * base_thick,
+ line_thick);
+#if DEBUG_SLUR_SCORING
+ SCM quant_score = me->get_property ("quant-score");
- 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<Score_element> encompass_arr;
- while (gh_pair_p (eltlist))
+ if (to_boolean (me->layout ()
+ ->lookup_variable (ly_symbol2scm ("debug-slur-scoring")))
+ && scm_is_string (quant_score))
{
- encompass_arr.push (unsmob_element (gh_car (eltlist)));
- eltlist =gh_cdr (eltlist);
- }
- encompass_arr.reverse ();
+ string str;
+ SCM properties = Font_interface::text_font_alist_chain (me);
-
- Array<Offset> offset_arr;
- Offset origin (me->relative_coordinate (common[X_AXIS], X_AXIS),
- me->relative_coordinate (common[Y_AXIS], Y_AXIS));
-
- int first = 1;
- int last = encompass_arr.size () - 2;
-
- offset_arr.push (get_attachment (me, LEFT, common));
+ if (!scm_is_number (me->get_property ("font-size")))
+ properties = scm_cons (scm_acons (ly_symbol2scm ("font-size"), scm_from_int (-6), SCM_EOL),
+ properties);
+
+ 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);
+ }
+#endif
- /*
- left is broken edge
- */
+ return a.smobbed_copy ();
+}
- if (encompass_arr[0] != sp->get_bound (LEFT))
- {
- first--;
- // ?
- offset_arr[0][Y_AXIS] -=
- encompass_arr[0]->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
+/*
+ it would be better to do this at engraver level, but that is
+ fragile, as the breakabl items are generated on staff level, at
+ which point slur starts and ends have to be tracked
+*/
+void
+Slur::replace_breakable_encompass_objects (Grob *me)
+{
+ extract_grob_set (me, "encompass-objects", extra_objects);
+ vector<Grob *> new_encompasses;
- /*
- right is broken edge
- */
- if (encompass_arr.top () != sp->get_bound (RIGHT))
+ for (vsize i = 0; i < extra_objects.size (); i++)
{
- last++;
+ Grob *g = extra_objects[i];
+
+ if (Separation_item::has_interface (g))
+ {
+ extract_grob_set (g, "elements", breakables);
+ for (vsize j = 0; j < breakables.size (); j++)
+ if (breakables[j]->get_property ("avoid-slur") == ly_symbol2scm ("inside"))
+ new_encompasses.push_back (breakables[j]);
+ }
+ else
+ new_encompasses.push_back (g);
}
- for (int i = first; i <= last; i++)
+ SCM encompass_scm = me->get_object ("encompass-objects");
+ if (Grob_array::unsmob (encompass_scm))
{
- Offset o (encompass_offset (me, encompass_arr[i], common));
- offset_arr.push (o - origin);
+ vector<Grob *> &arr =
+ unsmob_grob_array (encompass_scm)->array_reference ();
+ arr = new_encompasses;
}
+}
- offset_arr.push (Offset (sp->spanner_length (), 0) + get_attachment (me, RIGHT,common));
+Bezier
+Slur::get_curve (Grob *me)
+{
+ Bezier b;
+ int i = 0;
+ for (SCM s = me->get_property ("control-points"); scm_is_pair (s);
+ s = scm_cdr (s))
+ b.control_[i++] = ly_scm2offset (scm_car (s));
- if (encompass_arr[0] != sp->get_bound (LEFT))
- {
- offset_arr.top ()[Y_AXIS] -= encompass_arr.top ()->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
+ return b;
+}
- return offset_arr;
+void
+Slur::add_column (Grob *me, Grob *n)
+{
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n);
+ add_bound_item (dynamic_cast<Spanner *> (me), n);
}
+void
+Slur::add_extra_encompass (Grob *me, Grob *n)
+{
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("encompass-objects"), n);
+}
-MAKE_SCHEME_CALLBACK(Slur,set_spacing_rods);
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Slur, pure_outside_slur_callback, 4, 1, "");
SCM
-Slur::set_spacing_rods (SCM smob)
+Slur::pure_outside_slur_callback (SCM grob, SCM start_scm, SCM end_scm, SCM offset_scm)
{
- Score_element*me = unsmob_element (smob);
-
- Rod r;
- Spanner*sp = dynamic_cast<Spanner*>(me);
- r.item_l_drul_[LEFT] = sp->get_bound (LEFT);
- r.item_l_drul_[RIGHT] = sp->get_bound (RIGHT);
- r.distance_f_ =
- gh_scm2double (me->get_elt_property ("minimum-length"))
- * me->paper_l ()->get_var ("staffspace");
-
- r.add_to_cols ();
- return SCM_UNSPECIFIED;
+ int start = robust_scm2int (start_scm, 0);
+ int end = robust_scm2int (end_scm, 0);
+ Grob *script = unsmob_grob (grob);
+ Grob *slur = unsmob_grob (script->get_object ("slur"));
+ if (!slur)
+ return offset_scm;
+
+ SCM avoid = script->get_property ("avoid-slur");
+ if (avoid != ly_symbol2scm ("outside") && avoid != ly_symbol2scm ("around"))
+ return offset_scm;
+
+ Real offset = robust_scm2double (offset_scm, 0.0);
+ Direction dir = get_grob_direction (script);
+ return scm_from_double (offset + dir * slur->pure_height (slur, start, end).length () / 4);
}
-
-/*
- Ugh should have dash-length + dash-period
- */
-MAKE_SCHEME_CALLBACK (Slur, brew_molecule);
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Slur, outside_slur_callback, 2, 1, "");
SCM
-Slur::brew_molecule (SCM smob)
+Slur::outside_slur_callback (SCM grob, SCM offset_scm)
{
- Score_element * me = unsmob_element (smob);
- if (!scm_ilength (me->get_elt_property ("note-columns")))
- {
- me->suicide ();
- return SCM_EOL;
- }
-
- Real thick = me->paper_l ()->get_var ("stafflinethickness") *
- gh_scm2double (me->get_elt_property ("thickness"));
- Bezier one = get_curve (me);
-
- Molecule a;
- SCM d = me->get_elt_property ("dashed");
- if (gh_number_p (d))
- a = me->lookup_l ()->dashed_slur (one, thick, thick * gh_scm2double (d));
- else
- a = me->lookup_l ()->slur (one, Directional_element_interface (me).get () * thick, thick);
+ Grob *script = unsmob_grob (grob);
+ Grob *slur = unsmob_grob (script->get_object ("slur"));
- return a.create_scheme();
-}
+ if (!slur)
+ return offset_scm;
-void
-Slur::set_control_points (Score_element*me)
-{
- Real staff_space = Staff_symbol_referencer::staff_space ((Score_element*)me);
- Real h_inf = me->paper_l ()->get_var ("slur_height_limit_factor") *
- staff_space;
- Real r_0 = me->paper_l ()->get_var ("slur_ratio");
+ SCM avoid = script->get_property ("avoid-slur");
+ if (avoid != ly_symbol2scm ("outside")
+ && avoid != ly_symbol2scm ("around"))
+ return offset_scm;
- Slur_bezier_bow bb (get_encompass_offset_arr (me),
- Directional_element_interface (me).get (),
- h_inf, r_0);
+ Direction dir = get_grob_direction (script);
+ if (dir == CENTER)
+ return offset_scm;
- if (bb.fit_factor () > 1.0)
- {
- Real length = bb.curve_.control_[3][X_AXIS];
- Real default_height = slur_height (length, h_inf, r_0);
- bb.minimise_enclosed_area (me->paper_l());
-
- Real bff = me->paper_l ()->get_var ("slur_force_blowfit");
- bb.curve_.control_[1][Y_AXIS] *= bff;
- bb.curve_.control_[2][Y_AXIS] *= bff;
- bb.blow_fit ();
-
- Real sb = me->paper_l ()->get_var ("slur_beautiful");
- Real beautiful = length * default_height * sb;
- Real area = bb.enclosed_area_f ();
-
- /*
- Slurs that fit beautifully are not ugly
- */
- if (area > beautiful)
- de_uglyfy (me, &bb, default_height);
- }
+ Grob *cx = script->common_refpoint (slur, X_AXIS);
+ Grob *cy = script->common_refpoint (slur, Y_AXIS);
- Bezier b = bb.get_bezier ();
+ Bezier curve = Slur::get_curve (slur);
+ curve.translate (Offset (slur->relative_coordinate (cx, X_AXIS),
+ slur->relative_coordinate (cy, Y_AXIS)));
- 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 ();
- }
+ Interval yext = robust_relative_extent (script, cy, Y_AXIS);
+ Interval xext = robust_relative_extent (script, cx, X_AXIS);
- me->set_elt_property ("control-points", controls);
-}
+ Real offset = robust_scm2double (offset_scm, 0);
+ yext.translate (offset);
-Bezier
-Slur::get_curve (Score_element*me)
-{
- Bezier b;
- int i = 0;
-
- if (!Directional_element_interface (me).get ()
- || ! gh_symbol_p (index_cell (me->get_elt_property ("attachment"), LEFT)))
- set_extremities (me);
+ /* FIXME: slur property, script property? */
+ Real slur_padding = robust_scm2double (script->get_property ("slur-padding"),
+ 0.0);
+ yext.widen (slur_padding);
+
+ 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;
- if (!gh_pair_p (me->get_elt_property ("control-points")))
- set_control_points (me);
-
- for (SCM s= me->get_elt_property ("control-points"); s != SCM_EOL; s = gh_cdr (s))
+ for (int d = LEFT, k = 0; d <= RIGHT; d++, k++)
{
- b.control_[i] = ly_scm2offset (gh_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));
+
+ /* 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;
+ }
}
- Array<Offset> enc (get_encompass_offset_arr (me));
- Direction dir = Directional_element_interface (me).get ();
+ Real avoidance_offset = 0.0;
+ for (int d = LEFT, k = 0; d <= RIGHT; d++, k++)
+ if (consider[k])
+ avoidance_offset = dir * (max (dir * avoidance_offset,
+ dir * (ys[k] - yext[-dir] + dir * slur_padding)));
- Real x1 = enc[0][X_AXIS];
- Real x2 = enc.top ()[X_AXIS];
+ return scm_from_double (offset + avoidance_offset);
+}
- Real off = 0.0;
- for (int i=1; i < enc.size ()-1; i++)
+/*
+ * Used by Slur_engraver:: and Phrasing_slur_engraver::
+ */
+void
+Slur::auxiliary_acknowledge_extra_object (Grob_info const &info,
+ vector<Grob*> &slurs,
+ vector<Grob*> &end_slurs)
+{
+ if (slurs.empty () && end_slurs.empty ())
+ return;
+
+ Grob *e = info.grob ();
+ SCM avoid = e->get_property ("avoid-slur");
+ if (Tie::has_interface (e)
+ || avoid == ly_symbol2scm ("inside"))
+ {
+ for (vsize i = slurs.size (); i--;)
+ add_extra_encompass (slurs[i], e);
+ for (vsize i = end_slurs.size (); i--;)
+ add_extra_encompass (end_slurs[i], e);
+ }
+ else if (avoid == ly_symbol2scm ("outside")
+ || avoid == ly_symbol2scm ("around"))
{
- Real x = enc[i][X_AXIS];
- if (x > x1 && x <x2)
+ Grob *slur;
+ if (end_slurs.size () && !slurs.size ())
+ slur = end_slurs[0];
+ else
+ slur = slurs[0];
+
+ if (slur)
{
- Real y = b.get_other_coordinate (X_AXIS, x);
- off = off >? dir * (enc[i][Y_AXIS] - y);
+ chain_offset_callback (e, outside_slur_callback_proc, Y_AXIS);
+ e->set_object ("slur", slur->self_scm ());
}
}
- b.translate (Offset (0, dir * off));
- return b;
+ else
+ e->warning ("Ignoring grob for slur. avoid-slur not set?");
}
-
-bool
-Slur::has_interface (Score_element*me)
+MAKE_SCHEME_CALLBACK (Slur, cross_staff, 1)
+SCM
+Slur::cross_staff (SCM smob)
{
- return me->has_interface (ly_symbol2scm ("slur-interface"));
+ Grob *me = unsmob_grob (smob);
+ Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
+ assert (staff); // delete me
+ extract_grob_set (me, "note-columns", cols);
+
+ for (vsize i = 0; i < cols.size (); i++)
+ if (Staff_symbol_referencer::get_staff_symbol (cols[i]) != staff)
+ return SCM_BOOL_T;
+ return SCM_BOOL_F;
}
+ADD_INTERFACE (Slur,
+
+ "A slur",
+
+ /* properties */
+ "avoid-slur " /* UGH. */
+ "control-points "
+ "dash-fraction "
+ "dash-period "
+ "details "
+ "direction "
+ "eccentricity "
+ "encompass-objects "
+ "height-limit "
+ "inspect-quants "
+ "inspect-index "
+ "line-thickness "
+ "note-columns "
+ "positions "
+ "quant-score "
+ "ratio "
+ "thickness "
+ );
projects / lilypond.git / blobdiff