source file of the GNU LilyPond music typesetter
(c) 1996, 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ Jan Nieuwenhuizen <jan@digicash.com>
*/
/*
-
- TODO:
-
- think about crossing stems.
- Begin and end should be treated as a Script.
-
+ [TODO]
+ * begin and end should be treated as a Script.
+ * damping
+ * slur from notehead to stemend: c''()b''
*/
+
#include "slur.hh"
#include "scalar.hh"
#include "lookup.hh"
#include "molecule.hh"
#include "debug.hh"
#include "boxes.hh"
+#include "bezier.hh"
+//IMPLEMENT_IS_TYPE_B1(Slur,Spanner);
+IMPLEMENT_IS_TYPE_B1(Slur,Bow);
+Slur::Slur ()
+{
+}
void
-Slur::add(Note_column*n)
+Slur::add (Note_column*n)
{
- encompass_arr_.push(n);
- add_dependency(n);
+ encompass_arr_.push (n);
+ add_dependency (n);
}
void
-Slur::set_default_dir()
+Slur::set_default_dir ()
{
- dir_i_ = -1;
- for (int i=0; i < encompass_arr_.size(); i ++) {
- if (encompass_arr_[i]->dir_i_ < 0) {
- dir_i_ =1;
- break;
+ dir_ = DOWN;
+ for (int i=0; i < encompass_arr_.size (); i ++)
+ {
+ if (encompass_arr_[i]->dir_ < 0)
+ {
+ dir_ = UP;
+ break;
}
}
}
void
-Slur::do_pre_processing()
+Slur::do_add_processing ()
{
- right_col_l_ = encompass_arr_.top()->pcol_l_;
- left_col_l_ = encompass_arr_[0]->pcol_l_;
+ set_bounds (LEFT, encompass_arr_[0]);
+ if (encompass_arr_.size () > 1)
+ set_bounds (RIGHT, encompass_arr_.top ());
}
void
-Slur::do_break_at(PCol*l, PCol*r)
+Slur::do_pre_processing ()
{
- assert(l->line_l_ == r->line_l_);
-
- Array<Note_column*> old_encompass_arr = encompass_arr_;
- encompass_arr_.set_size(0);
- for (int i =0; i < old_encompass_arr.size(); i++) {
- if (old_encompass_arr[i]->pcol_l_->line_l_==l->line_l_)
- encompass_arr_.push(old_encompass_arr[i]);
- }
+ // don't set directions
}
void
-Slur::do_substitute_dependency(Score_elem*o, Score_elem*n)
+Slur::do_substitute_dependency (Score_elem*o, Score_elem*n)
{
- int i;
- while((i = encompass_arr_.find_i((Note_column*)o->item())) >=0) {
- if (n)
- encompass_arr_[i] = (Note_column*)n->item();
- else
- encompass_arr_.del(i);
+ int i;
+ while ((i = encompass_arr_.find_i ((Note_column*)o->item ())) >=0)
+ {
+ if (n)
+ encompass_arr_[i] = (Note_column*)n->item ();
+ else
+ encompass_arr_.del (i);
}
}
+static int
+Note_column_compare (Note_column *const&n1 , Note_column* const&n2)
+{
+ return Item::left_right_compare (n1, n2);
+}
void
-Slur::do_post_processing()
+Slur::do_post_processing ()
+{
+ encompass_arr_.sort (Note_column_compare);
+ if (!dir_)
+ set_default_dir ();
+ Real interline_f = paper ()->interline_f ();
+ Real inter_f = interline_f / 2;
+
+ /*
+ [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...
+
+ * suggested gap = ss / 5;
+ */
+ // jcn: 1/5 seems so small?
+ Real gap_f = interline_f / 2; // 5;
+
+ Drul_array<Note_column*> extrema;
+ extrema[LEFT] = encompass_arr_[0];
+ extrema[RIGHT] = encompass_arr_.top ();
+
+ Direction d=LEFT;
+ Real nw_f = paper ()->note_width ();
+
+ do
+ {
+ if (extrema[d] != spanned_drul_[d])
+ {
+ dx_f_drul_[d] = -d
+ *(spanned_drul_[d]->width ().length () -0.5*nw_f);
+ Direction u = d;
+ flip(&u);
+ if ((extrema[u] == spanned_drul_[u]) && extrema[u]->stem_l_)
+ {
+ dy_f_drul_[d] = extrema[u]->stem_l_->height ()[dir_];
+ dy_f_drul_[u] = extrema[u]->stem_l_->height ()[dir_];
+ }
+ }
+ else if (extrema[d]->stem_l_ && !extrema[d]->stem_l_->transparent_b_)
+ {
+ dy_f_drul_[d] = (int)rint (extrema[d]->stem_l_->height ()[dir_]);
+ dx_f_drul_[d] += 0.5 * nw_f - d * gap_f;
+ if (dir_ == extrema[d]->stem_l_->dir_)
+ {
+ if (dir_ == d)
+ dx_f_drul_[d] += 0.5 * (dir_ * d) * d * nw_f;
+ else
+ dx_f_drul_[d] += 0.25 * (dir_ * d) * d * nw_f;
+ }
+ }
+ else
+ {
+ dy_f_drul_[d] = (int)rint (extrema[d]->head_positions_interval ()
+ [dir_])* inter_f;
+ }
+ dy_f_drul_[d] += dir_ * interline_f;
+ }
+ while (flip(&d) != LEFT);
+}
+
+Array<Offset>
+Slur::get_encompass_offset_arr () const
{
- if (!dir_i_)
- set_default_dir();
- Real inter_f = paper()->internote_f();
- if (encompass_arr_[0]->stem_l_)
- left_pos_i_ = rint(encompass_arr_[0]->stem_l_->height()[dir_i_]/inter_f);
- else
- left_pos_i_ = 0;
- if (encompass_arr_.top()->stem_l_)
- right_pos_i_ = rint(encompass_arr_.top()->stem_l_->height()[dir_i_]/inter_f);
- else
- right_pos_i_ = 0;
-
- left_pos_i_ += dir_i_;
- right_pos_i_ += dir_i_;
+ Real interline = paper ()->interline_f ();
+ Real notewidth = paper ()->note_width ();
+ Real internote = interline / 2;
+
+ Stem* left_stem = encompass_arr_[0]->stem_l_;
+ Real left_x = left_stem->hpos_f ();
+ left_x += dx_f_drul_[LEFT];
+
+ Real left_y = dy_f_drul_[LEFT];
+
+ Real dx = width ().length ();
+ dx += (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT]);
+ dx = dx <? 1000;
+ dx = dx >? 2 * interline;
+
+ Real dy = (dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]);
+ if (abs (dy) > 1000)
+ dy = sign (dy) * 1000;
+
+ int first = 1;
+ int last = encompass_arr_.size () - 1;
+ if (encompass_arr_[0] != spanned_drul_[LEFT])
+ {
+ first = 0;
+ left_x = spanned_drul_[LEFT]->width ().length ();
+ left_x -= 2 * notewidth;
+// left_y = 0;
+ Stem* stem = encompass_arr_[last]->stem_l_;
+ left_y = stem->dir_ == dir_ ? stem->stem_end_f ()
+ : stem->stem_begin_f () + 0.5 * dir_;
+ dy = 0;
+ }
+ if (encompass_arr_.top () != spanned_drul_[RIGHT])
+ {
+ last += 1;
+ dy = 0;
+ }
+
+ Array<Offset> notes;
+ notes.push (Offset (0,0));
+ for (int i = first; i < last; i++)
+ {
+ Stem* stem = encompass_arr_[i]->stem_l_;
+ /*
+ set x to middle of notehead or on exact x position of stem,
+ according to slur direction
+ */
+ Real x = stem->hpos_f ();
+
+ if (stem->dir_ != dir_)
+ x += 0.5 * notewidth;
+ else if (stem->dir_ == UP)
+ x += 1.0 * notewidth;
+
+ x -= left_x;
+
+ Real y = stem->dir_ == dir_ ? stem->stem_end_f ()
+ : stem->stem_begin_f () + 0.5 * dir_;
+
+ /*
+ leave a gap: slur mustn't touch head/stem
+ */
+ y += 2.5 * dir_;
+
+ // ugh: huh?
+ if (dir_ == DOWN)
+ y += 1.5 * dir_;
+
+ y *= internote;
+ y -= left_y;
+
+ notes.push (Offset (x, y));
+ }
+
+ notes.push (Offset (dx, dy));
+
+ return notes;
}
-IMPLEMENT_STATIC_NAME(Slur);
+
projects / lilypond.git / blobdiff