/*
tie.cc -- implement Tie
- source file of the LilyPond music typesetter
+ source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include "paper-def.hh"
#include "tie.hh"
-#include "notehead.hh"
-#include "p-col.hh"
+#include "note-head.hh"
+#include "paper-column.hh"
+#include "debug.hh"
+
-Spanner*
-Tie::do_break_at(PCol*l, PCol*r) const
-{
- Tie * tie_p = new Tie;
- Line_of_score const *line_C=l->line_l_;
- if (left_head_l_->line_l()== line_C)
- tie_p->left_head_l_ = left_head_l_;
- if (right_head_l_->line_l() == line_C)
- tie_p->right_head_l_ = right_head_l_;
-
- return tie_p;
-}
void
-Tie::set_head(int x_pos, Notehead * head_l)
+Tie::set_head (Direction d, Note_head * head_l)
{
- if (x_pos >0) {
- assert(!right_head_l_);
- right_head_l_ = head_l;
- } else {
- assert(!left_head_l_);
- left_head_l_ = head_l;
- }
- add_dependency(head_l);
+ assert (!head_l_drul_[d]);
+ head_l_drul_[d] = head_l;
+ set_bounds (d, head_l);
+
+ add_dependency (head_l);
}
Tie::Tie()
{
- right_head_l_ =0;
- left_head_l_ =0;
+ head_l_drul_[RIGHT] =0;
+ head_l_drul_[LEFT] =0;
+}
+
+
+/*
+ ugh: direction of the Tie is more complicated. See [Ross] p136 and further
+ */
+Direction
+Tie::get_default_dir () const
+{
+ int m = int (head_l_drul_[LEFT]->position_f ()
+ + head_l_drul_[RIGHT]->position_f ()) /2;
+
+ /*
+ If dir is not determined: inverse of stem: down
+ (see stem::get_default_dir ())
+ */
+ Direction neutral_dir = (Direction)(int)paper_l ()->get_var ("stem_default_neutral_direction");
+ return (m == 0) ? other_dir (neutral_dir) : (m < 0) ? DOWN : UP;
}
void
Tie::do_add_processing()
{
- assert(left_head_l_ && right_head_l_);
- left_col_l_ = left_head_l_ -> pcol_l_;
- right_col_l_ = right_head_l_ -> pcol_l_;
+ if (!(head_l_drul_[LEFT] && head_l_drul_[RIGHT]))
+ warning (_ ("lonely tie"));
+
+ Direction d = LEFT;
+ Drul_array<Note_head *> new_head_drul = head_l_drul_;
+ do {
+ if (!head_l_drul_[d])
+ new_head_drul[d] = head_l_drul_[(Direction)-d];
+ } while (flip(&d) != LEFT);
+ head_l_drul_ = new_head_drul;
}
void
Tie::do_post_processing()
{
- assert(left_head_l_ || right_head_l_);
- left_pos_i_ = (left_head_l_)?
- left_head_l_->position_i_ : right_head_l_->position_i_;
- right_pos_i_ = (right_head_l_) ?
- right_head_l_->position_i_ : left_head_l_->position_i_;
+ assert (head_l_drul_[LEFT] || head_l_drul_[RIGHT]);
+
+ Real interline_f = paper_l ()->get_var ("interline");
+ Real internote_f = interline_f / 2;
+ Real x_gap_f = paper_l ()->get_var ("tie_x_gap");
+ Real y_gap_f = paper_l ()->get_var ("tie_y_gap");
+
+ /*
+ Slur and tie placement [OSU]
+
+ Ties:
+
+ * x = inner vertical tangent - d * gap
+
+ */
+
+
+ /*
+ OSU: not different for outer notes, so why all this code?
+ ie, can we drop this, or should it be made switchable.
+ */
+#if 0
+ Direction d = LEFT;
+ do
+ {
+ Real head_width_f = head_l_drul_[d]
+ ? head_l_drul_[d]->extent (X_AXIS).length ()
+ : 0;
+ /*
+ side attached to outer (upper or lower) notehead of chord
+ */
+ if (head_l_drul_[d]
+ /*
+
+ a~a~a;
+
+ to second tie, middle notehead seems not extremal
+
+ Getting scared a bit by score-element's comment:
+ // is this a good idea?
+ */
+ && (head_l_drul_[d]->get_elt_property ("extremal")
+ != SCM_UNDEFINED))
+ {
+ if (d == LEFT)
+ dx_f_drul_[d] += head_width_f;
+ dx_f_drul_[d] += -d * x_gap_f;
+ }
+ /*
+ side attached to inner notehead
+ */
+ else
+ {
+ dx_f_drul_[d] += -d * head_width_f;
+ }
+ } while (flip (&d) != LEFT);
+
+#else
+
+ if (head_l_drul_[LEFT])
+ dx_f_drul_[LEFT] = head_l_drul_[LEFT]->extent (X_AXIS).length ();
+ else
+ dx_f_drul_[LEFT] = get_broken_left_end_align ();
+ dx_f_drul_[LEFT] += x_gap_f;
+ dx_f_drul_[RIGHT] -= x_gap_f;
+
+#endif
+
+ /*
+ Slur and tie placement [OSU] -- check this
+
+ Ties:
+
+ * y = dx < 5ss: horizontal tangent
+ y = dx >= 5ss: y next interline - d * 0.25 ss
+
+ which probably means that OSU assumes that
+
+ dy <= 5 dx
+
+ for smal slurs
+ */
+
+ Real ypos = head_l_drul_[LEFT] ? head_l_drul_[LEFT]->position_f ()
+ : head_l_drul_[RIGHT]->position_f ();
+
+ Real y_f = internote_f * ypos;
+ int ypos_i = int (ypos);
+
+ Real dx_f = extent (X_AXIS).length () + dx_f_drul_[RIGHT] - dx_f_drul_[LEFT];
+ if (dx_f < paper_l ()->get_var ("tie_staffspace_length"))
+ {
+ if (abs (ypos_i) % 2)
+ y_f += get_direction () * internote_f;
+ y_f += get_direction () * y_gap_f;
+ }
+ else
+ {
+ if (! (abs (ypos_i) % 2))
+ y_f += get_direction () * internote_f;
+ y_f += get_direction () * internote_f;
+ y_f -= get_direction () * y_gap_f;
+ }
+
+ dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = y_f;
+}
+
+void
+Tie::do_substitute_element_pointer (Score_element*o, Score_element*n)
+{
+ Note_head *new_l = n ? dynamic_cast<Note_head *> (n) : 0;
+ if (dynamic_cast <Item *> (o) == head_l_drul_[LEFT])
+ head_l_drul_[LEFT] = new_l;
+ else if (dynamic_cast <Item *> (o) == head_l_drul_[RIGHT])
+ head_l_drul_[RIGHT] = new_l;
}
+Array<Rod>
+Tie::get_rods () const
+{
+ Array<Rod> a;
+ Rod r;
+ r.item_l_drul_ = spanned_drul_;
+ r.distance_f_ = paper_l ()->get_var ("tie_x_minimum");
+ a.push (r);
+ return a;
+}
+
projects / lilypond.git / blobdiff