source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1999, 1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
/*
[TODO]
- * URG: share code with tie
- * begin and end should be treated as a Script.
- * damping
- * slur from notehead to stemend: c''()b''
+ * fix broken interstaff slurs
+ * should avoid stafflines with horizontal part.
+ * begin and end should be treated as a/acknowledge Scripts.
+ * 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 "scalar.hh"
#include "lookup.hh"
#include "paper-def.hh"
#include "note-column.hh"
#include "stem.hh"
-#include "p-col.hh"
+#include "paper-column.hh"
#include "molecule.hh"
#include "debug.hh"
-#include "box.hh"
-#include "bezier.hh"
-#include "encompass-info.hh"
+#include "slur-bezier-bow.hh"
#include "main.hh"
+#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
-Slur::Slur ()
+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 (Note_column*n)
+Slur::add_column (Score_element*me, Score_element*n)
{
- if (!n->head_l_arr_.size ())
- warning (_ ("Putting slur over rest."));
- encompass_arr_.push (n);
- n->stem_l_->slur_l_ = this;
- add_dependency (n);
+ if (!gh_pair_p (n->get_elt_property ("note-heads")))
+ warning (_ ("Putting slur over rest. Ignoring."));
+ else
+ {
+ Pointer_group_interface::add_element (me, "note-columns",n);
+ me->add_dependency (n);
+ }
+
+ add_bound_item (dynamic_cast<Spanner*> (me), dynamic_cast<Item*>(n));
}
void
-Slur::set_default_dir ()
+Slur::de_uglyfy (Score_element*me, Slur_bezier_bow* bb, Real default_height)
{
- dir_ = DOWN;
- for (int i=0; i < encompass_arr_.size (); i ++)
+ Real length = bb->curve_.control_[3][X_AXIS] ;
+ Real ff = bb->fit_factor ();
+ for (int i = 1; i < 3; i++)
{
- if (encompass_arr_[i]->dir_ < 0)
+ 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_elt_property ("de-uglify-parameters");
+
+ Real c1 = gh_scm2double (gh_car (up));
+ Real c2 = gh_scm2double (gh_cadr (up));
+ Real c3 = gh_scm2double (gh_caddr (up));
+
+ if (h > c1 * f)
+ {
+ h = c1 * f;
+ }
+ else if (h > c2 + c3 * ind)
{
- dir_ = UP;
+ h = c2 + c3 * ind;
+ }
+
+ bb->curve_.control_[i][Y_AXIS] = h * length;
+ }
+
+ bb->curve_.assert_sanity ();
+}
+
+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 ++)
+ {
+ if (Note_column::dir (encompass_arr[i]) < 0)
+ {
+ d = UP;
break;
}
}
+ return d;
}
-void
-Slur::do_add_processing ()
+
+MAKE_SCHEME_CALLBACK (Slur, after_line_breaking,1);
+SCM
+Slur::after_line_breaking (SCM smob)
{
- set_bounds (LEFT, encompass_arr_[0]);
- if (encompass_arr_.size () > 1)
- set_bounds (RIGHT, encompass_arr_.top ());
-}
+ 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;
+}
+
void
-Slur::do_pre_processing ()
+Slur::check_slope (Score_element *me)
{
- // don't set directions
+ /*
+ Avoid too steep slurs.
+ */
+ SCM s = me->get_elt_property ("slope-limit");
+ if (gh_number_p (s))
+ {
+ Array<Offset> encompass = get_encompass_offset_arr (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 ((Score_element*)me);
+ Direction dir = (Direction)gh_scm2int (me->get_elt_property ("direction"));
+ Direction d = (Direction)(- dir * (sign (dy)));
+ SCM a = me->get_elt_property ("attachment-offset");
+ Drul_array<Offset> o;
+ o[LEFT] = ly_scm2offset (index_cell (a, LEFT));
+ o[RIGHT] = ly_scm2offset (index_cell (a, RIGHT));
+ o[d][Y_AXIS] -= (limit - slope) * dx * dir / staff_space;
+ //o[d][Y_AXIS] = attachment[-d][Y_AXIS] + (dx * limit * dir / staff_space);
+ me->set_elt_property ("attachment-offset",
+ gh_cons (ly_offset2scm (o[LEFT]),
+ ly_offset2scm (o[RIGHT])));
+ }
+ }
}
void
-Slur::do_substitute_element_pointer (Score_element*o, Score_element*n)
+Slur::set_extremities (Score_element *me)
{
- int i;
- while ((i = encompass_arr_.find_i (dynamic_cast<Note_column *> (o))) >=0)
+ if (!Directional_element_interface::get (me))
+ Directional_element_interface::set (me, get_default_dir (me));
+
+ Direction dir = LEFT;
+ do
{
- if (n)
- encompass_arr_[i] = dynamic_cast<Note_column *> (n);
- else
- encompass_arr_.del (i);
+ if (!gh_symbol_p (index_cell (me->get_elt_property ("attachment"), dir)))
+ {
+ for (SCM s = me->get_elt_property ("extremity-rules");
+ 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);
-static int
-Note_column_compare (Note_column *const&n1 , Note_column* const&n2)
-{
- return Item::left_right_compare (n1, n2);
+ check_slope (me);
}
-static bool
-broken_edge_b (Slur*s, Drul_array<Note_column*>& extrema, Direction dir)
+
+Real
+Slur::get_first_notecolumn_y (Score_element *me, Direction dir)
{
- return extrema[dir] != s->spanned_drul_[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))
+ {
+ 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;
}
-static bool
-normal_edge_b (Slur*s, Drul_array<Note_column*>& extrema, Direction dir)
+Offset
+Slur::broken_trend_offset (Score_element *me, Direction dir)
{
- return !broken_edge_b (s, extrema, dir)
- && extrema[dir]->stem_l_
- && !extrema[dir]->stem_l_->transparent_b_
- && extrema[dir]->head_l_arr_.size ();
+ /*
+ 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 () - 1;
+ dir == LEFT ? i < mother->broken_into_l_arr_.size () : i > 0;
+ 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);
+ int neighbour_cols = scm_ilength (neighbour->get_elt_property ("note-columns"));
+ int cols = scm_ilength (me->get_elt_property ("note-columns"));
+ o = Offset (0, (y*neighbour_cols + neighbour_y*cols) /
+ (cols + neighbour_cols));
+ break;
+ }
+ }
+ }
+ return o;
}
-void
-Slur::do_post_processing ()
+Offset
+Slur::get_attachment (Score_element *me, Direction dir,
+ Score_element **common)
{
- encompass_arr_.sort (Note_column_compare);
- if (!dir_)
- set_default_dir ();
-
- Real interline_f = paper ()->interline_f ();
- Real internote_f = interline_f / 2;
- // URG
- Real notewidth_f = paper ()->note_width () * 0.8;
-
- /*
- [OSU]: slur and tie placement
-
- slurs:
- * x = centre of head (upside-down: inner raakpunt stem) - d * gap
-
- * y = length < 5ss : horizontal raakpunt + d * 0.25 ss
- y = length >= 5ss : y next interline - d * 0.25 ss
- --> height <= 5 length ?? we use <= 3 length, now...
- */
+ 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 staff_space = Staff_symbol_referencer::staff_space ((Score_element*)me);
+ Real hs = staff_space / 2.0;
+ Offset o;
- Real gap_f = paper ()->get_var ("slur_x_gap");
-
- Drul_array<Note_column*> extrema;
- extrema[LEFT] = encompass_arr_[0];
- extrema[RIGHT] = encompass_arr_.top ();
-
- Direction d=LEFT;
-
- do
+ Score_element *stem = 0;
+ if (Note_column::has_interface (sp->get_bound (dir)))
{
- if (broken_edge_b (this, extrema, d))
+ Score_element * n =sp->get_bound (dir);
+ if ((stem = Note_column::stem_l (n)))
{
- // ugh -- check if needed
- dx_f_drul_[d] = -d
- *(spanned_drul_[d]->extent (X_AXIS).length () - 0.5 * notewidth_f);
- // prebreak
- if (d == RIGHT)
+ if (str == "head")
{
- dx_f_drul_[LEFT] = spanned_drul_[LEFT]->extent (X_AXIS).length ();
-
- // urg -- check if needed
- if (encompass_arr_.size () > 1)
- dx_f_drul_[RIGHT] += notewidth_f;
+ o = Offset (0, Stem::head_positions (stem)
+ [Directional_element_interface::get (me)] * hs);
+ /*
+ Default position is centered in X, on outer side of head Y
+ */
+ o += Offset (0.5 * n->extent (n,X_AXIS).length (),
+ 0.5 * staff_space
+ * Directional_element_interface::get (me));
}
- }
- /*
- normal slur
- */
- else if (normal_edge_b (this, extrema, d))
- {
- Real notewidth_f = extrema[d]->extent (X_AXIS).length ();
- dy_f_drul_[d] = (int)rint (extrema[d]->stem_l_-> extent (Y_AXIS)[dir_]);
- dx_f_drul_[d] += 0.5 * notewidth_f - d * gap_f;
- if (dir_ == extrema[d]->stem_l_->dir_)
+ else if (str == "alongside-stem")
{
- if (dir_ == d)
- dx_f_drul_[d] += 0.5 * (dir_ * d) * d * notewidth_f;
- else
- dx_f_drul_[d] += 0.25 * (dir_ * d) * d * notewidth_f;
+ o = Offset (0, Stem::chord_start_f (stem));
+ /*
+ Default position is on stem X, on outer side of head Y
+ */
+ o += Offset (n->extent (n,X_AXIS).length ()
+ * (1 + Stem::get_direction (stem)),
+ 0.5 * staff_space
+ * Directional_element_interface::get (me));
+ }
+ 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 (n,X_AXIS).length ()
+ - stem->extent (stem,X_AXIS).length ())
+ * (1 + Stem::get_direction (stem)),
+ 0);
}
}
- else
- {
- Real notewidth_f = extrema[d]->extent (X_AXIS).length ();
- dy_f_drul_[d] = (int)rint (extrema[d]->head_positions_interval ()
- [dir_]) * internote_f;
- dx_f_drul_[d] += 0.5 * notewidth_f - d * gap_f;
+ }
+ 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
+
+
}
- dy_f_drul_[d] += dir_ * interline_f;
- if (extrema[d]->stem_l_ && (dir_ == extrema[d]->stem_l_->dir_))
- dy_f_drul_[d] -= dir_ * internote_f;
- }
- while (flip(&d) != LEFT);
+
+ }
- // now that both are set, do dependent
- do
+ SCM alist = me->get_elt_property ("extremity-offset-alist");
+int stemdir = stem ? Stem::get_direction (stem) : 1;
+ int slurdir = gh_scm2int (me->get_elt_property ("direction"));
+ SCM l = scm_assoc
+ (scm_listify (a,
+ gh_int2scm (stemdir * dir),
+ gh_int2scm (slurdir * dir),
+ SCM_UNDEFINED), alist);
+
+ if (l != SCM_BOOL_F)
{
- if (broken_edge_b (this, extrema, d))
- {
- Direction u = d;
- flip(&u);
+ o += ly_scm2offset (gh_cdr (l)) * staff_space * 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);
+ }
- // postbreak
- if (d == LEFT)
- dy_f_drul_[u] += dir_ * internote_f;
+ o += ly_scm2offset (index_cell (me->get_elt_property ("attachment-offset"),
+ dir)) * staff_space;
+ return o;
+}
- dy_f_drul_[d] = dy_f_drul_[u];
- }
- }
- while (flip(&d) != LEFT);
+Offset
+Slur::encompass_offset (Score_element*me,
+ Score_element* col,
+ Score_element **common)
+{
+ Offset o;
+ Score_element* stem_l = unsmob_element (col->get_elt_property ("stem"));
+
+ Direction dir = Directional_element_interface::get (me);
+
+ if (!stem_l)
+ {
+ 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;
+ }
+ Direction stem_dir = Directional_element_interface::get (stem_l);
+ o[X_AXIS] = stem_l->relative_coordinate (0, X_AXIS);
/*
- Slur should follow line of music
+ Simply set x to middle of notehead
*/
- if (normal_edge_b (this, extrema, LEFT)
- && normal_edge_b (this, extrema, RIGHT)
- && (extrema[LEFT]->stem_l_ != extrema[RIGHT]->stem_l_))
+
+ o[X_AXIS] -= 0.5 * stem_dir * col->extent (col,X_AXIS).length ();
+
+ if ((stem_dir == dir)
+ && !stem_l->extent (stem_l, Y_AXIS).empty_b ())
{
- Real note_dy = extrema[RIGHT]->stem_l_->head_positions ()[dir_]
- - extrema[LEFT]->stem_l_->head_positions ()[dir_];
- Real dy = dy_f_drul_[RIGHT] - dy_f_drul_[LEFT];
- /*
- Should we always follow note-heads, (like a tie)?
- For now, only if the note_dy != slur_dy, we'll do
- slur_dy := note_dy * factor.
- */
- if (sign (dy) != sign (note_dy))
- {
- Real damp_f = paper ()->get_var ("slur_slope_follow_music_factor");
- Real realdy = note_dy * damp_f;
- Direction adjust_dir = (Direction)(- dir_ * sign (realdy));
- if (!adjust_dir)
- adjust_dir = -dir_;
- /*
- adjust only if no beam gets in the way
- */
- if (!extrema[adjust_dir]->stem_l_->beam_l_
- || (adjust_dir == extrema[adjust_dir]->stem_l_->dir_)
- || (extrema[adjust_dir]->stem_l_->beams_i_drul_[-adjust_dir] < 1))
- {
- dy_f_drul_[adjust_dir] = dy_f_drul_[-adjust_dir]
- + 2 * adjust_dir * realdy;
- Real dx = notewidth_f / 2;
- if (adjust_dir != extrema[adjust_dir]->stem_l_->dir_)
- dx /= 2;
- dx_f_drul_[adjust_dir] -= adjust_dir * dx;
- }
- }
+ o[Y_AXIS] = stem_l->extent (common[Y_AXIS], Y_AXIS)[dir];
+ }
+ else
+ {
+ o[Y_AXIS] = col->extent (common[Y_AXIS], Y_AXIS)[dir];
}
/*
- Avoid too steep slurs.
+ leave a gap: slur mustn't touch head/stem
*/
- Real damp_f = paper ()->get_var ("slur_slope_damping");
- Offset d_off = Offset (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT],
- dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]);
- d_off[X_AXIS] += extent (X_AXIS).length ();
-
- Real ratio_f = abs (d_off[Y_AXIS] / d_off[X_AXIS]);
- if (ratio_f > damp_f)
- dy_f_drul_[(Direction)(- dir_ * sign (d_off[Y_AXIS]))] +=
- dir_ * (ratio_f - damp_f) * d_off[X_AXIS];
+ o[Y_AXIS] += dir * gh_scm2double (me->get_elt_property ("y-free")) *
+ 1.0;
+ return o;
}
Array<Offset>
-Slur::get_encompass_offset_arr () const
+Slur::get_encompass_offset_arr (Score_element *me)
{
- Real notewidth = paper ()->note_width () * 0.8;
- Real gap = paper ()->get_var ("slur_x_gap");
- Real internote = paper ()->internote_f ();
+ 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)};
+
+
+ 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))
+ {
+ encompass_arr.push (unsmob_element (gh_car (eltlist)));
+ eltlist =gh_cdr (eltlist);
+ }
+ encompass_arr.reverse ();
+
+
+ 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 left = Offset (dx_f_drul_[LEFT], dy_f_drul_[LEFT]);
- left[X_AXIS] += encompass_arr_[0]->stem_l_->hpos_f ();
+ offset_arr.push (get_attachment (me, LEFT, common));
/*
- <URG>
- i don't understand these two, but *must* for symmetry
- look at encompass array:
- lilypond -D input/test/slur-symmetry*.ly
- lilypond -D input/test/sleur.ly
+ left is broken edge
+ */
- do_post_processing should have calculated these into
- dx_f_drul_[], no??
+ 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);
+ }
- if (dir_ != encompass_arr_[0]->stem_l_->dir_)
- left[X_AXIS] += - 0.5 * notewidth * encompass_arr_[0]->stem_l_->dir_
- + gap;
- else if (encompass_arr_[0]->stem_l_->dir_ == UP)
- left[X_AXIS] -= notewidth;
+ /*
+ right is broken edge
+ */
+ if (encompass_arr.top () != sp->get_bound (RIGHT))
+ {
+ last++;
+ }
- if ((dir_ == encompass_arr_[0]->stem_l_->dir_)
- && (encompass_arr_[0]->stem_l_->dir_ == DOWN))
- left[Y_AXIS] -= internote * encompass_arr_[0]->stem_l_->dir_;
- /* </URG> */
+ for (int i = first; i <= last; i++)
+ {
+ Offset o (encompass_offset (me, encompass_arr[i], common));
+ offset_arr.push (o - origin);
+ }
- Offset d = Offset (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT],
- dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]);
- d[X_AXIS] += extent (X_AXIS).length ();
+ offset_arr.push (Offset (sp->spanner_length (), 0) + get_attachment (me, RIGHT,common));
+
+ 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 offset_arr;
+}
- int first = 1;
- int last = encompass_arr_.size () - 1;
- // prebreak
- if (encompass_arr_.top () != spanned_drul_[RIGHT])
- last++;
+MAKE_SCHEME_CALLBACK(Slur,set_spacing_rods,1);
+SCM
+Slur::set_spacing_rods (SCM smob)
+{
+ Score_element*me = unsmob_element (smob);
- // postbreak
- if (encompass_arr_[0] != spanned_drul_[LEFT])
- first--;
+ 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"))
+ * 1.0;
+
+ r.add_to_cols ();
+ return SCM_UNSPECIFIED;
+}
- Array<Offset> notes;
- notes.push (Offset (0,0));
- for (int i = first; i < last; i++)
+/*
+ Ugh should have dash-length + dash-period
+ */
+MAKE_SCHEME_CALLBACK (Slur, brew_molecule,1);
+SCM
+Slur::brew_molecule (SCM smob)
+{
+ Score_element * me = unsmob_element (smob);
+ if (!scm_ilength (me->get_elt_property ("note-columns")))
{
- Encompass_info info (encompass_arr_[i], dir_);
- notes.push (info.o_ - left);
+ me->suicide ();
+ return SCM_EOL;
}
- Encompass_info info (encompass_arr_.top (), dir_);
- // [encompass_arr_.size () - 1]
+
+ Real thick = me->paper_l ()->get_var ("stafflinethickness") *
+ gh_scm2double (me->get_elt_property ("thickness"));
+ Bezier one = get_curve (me);
+
+ // get_curve may suicide
+ if (!scm_ilength (me->get_elt_property ("note-columns")))
+ return SCM_EOL;
+
+ Molecule a;
+ SCM d = me->get_elt_property ("dashed");
+ if (gh_number_p (d))
+ a = Lookup::dashed_slur (one, thick, thick * gh_scm2double (d));
+ else
+ a = Lookup::slur (one, Directional_element_interface::get (me) * thick, thick);
+
+ return a.create_scheme();
+}
+
+void
+Slur::set_control_points (Score_element*me)
+{
+ Real staff_space = Staff_symbol_referencer::staff_space ((Score_element*)me);
+
+ SCM details = me->get_elt_property ("details");
+ SCM h_inf_scm = scm_assq (ly_symbol2scm ("height-limit"), details);
+ SCM r_0_scm = scm_assq (ly_symbol2scm ("ratio"), details);
+
+ Real r_0 = gh_scm2double (gh_cdr (r_0_scm));
+ Real h_inf = staff_space * gh_scm2double (gh_cdr (h_inf_scm));
- // urg:
- Slur* urg = (Slur*)this;
- urg->interstaff_f_ = info.interstaff_f_;
+ Slur_bezier_bow bb (get_encompass_offset_arr (me),
+ Directional_element_interface::get (me),
+ h_inf, r_0);
+
+ 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_elt_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 (gh_cdr (sbf)))
+ bff = gh_scm2double (gh_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.enclosed_area_f ();
+
+ /*
+ Slurs that fit beautifully are not ugly
+ */
+ if (area > beautiful)
+ de_uglyfy (me, &bb, default_height);
+ }
+
+ Bezier b = bb.get_bezier ();
+
+
+ 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;
+ }
+ }
+
+ me->set_elt_property ("control-points", controls);
+}
+
+Bezier
+Slur::get_curve (Score_element*me)
+{
+ Bezier b;
+ int i = 0;
+
+ if (!Directional_element_interface::get (me)
+ || ! gh_symbol_p (index_cell (me->get_elt_property ("attachment"), LEFT))
+ || ! gh_symbol_p (index_cell (me->get_elt_property ("attachment"), RIGHT)))
+ set_extremities (me);
- d[Y_AXIS] += interstaff_f_;
+ if (!gh_pair_p (me->get_elt_property ("control-points")))
+ set_control_points (me);
+
+ // set_control_points may suicide
+ if (!scm_ilength (me->get_elt_property ("note-columns")))
+ return b;
- // prebreak
- if (interstaff_f_ && (encompass_arr_.top () != spanned_drul_[RIGHT]))
+ for (SCM s= me->get_elt_property ("control-points"); s != SCM_EOL; s = gh_cdr (s))
{
- Encompass_info info (encompass_arr_[encompass_arr_.size () - 1], dir_);
- d[Y_AXIS] -= info.o_[Y_AXIS] - interstaff_f_;
+ b.control_[i] = ly_scm2offset (gh_car (s));
+ i++;
}
- notes.push (d);
+ Array<Offset> enc (get_encompass_offset_arr (me));
+ Direction dir = Directional_element_interface::get (me);
+
+ Real x1 = enc[0][X_AXIS];
+ Real x2 = enc.top ()[X_AXIS];
- return notes;
+ Real off = 0.0;
+ for (int i=1; i < enc.size ()-1; i++)
+ {
+ Real x = enc[i][X_AXIS];
+ if (x > x1 && x <x2)
+ {
+ Real y = b.get_other_coordinate (X_AXIS, x);
+ off = off >? dir * (enc[i][Y_AXIS] - y);
+ }
+ }
+ b.translate (Offset (0, dir * off));
+ return b;
}
-Array<Rod>
-Slur::get_rods () const
+bool
+Slur::has_interface (Score_element*me)
{
- Array<Rod> a;
- Rod r;
- r.item_l_drul_ = spanned_drul_;
- r.distance_f_ = paper ()->get_var ("slur_x_minimum");
-
- a.push (r);
- return a;
+ return me->has_interface (ly_symbol2scm ("slur-interface"));
}
+
projects / lilypond.git / blobdiff