source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "paper-def.hh"
#include "tie.hh"
#include "note-head.hh"
#include "p-col.hh"
+#include "debug.hh"
+IMPLEMENT_IS_TYPE_B1(Tie,Bow);
void
-Tie::set_head(int x_pos, Note_head * 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;
- same_pitch_b_ =false;
+ head_l_drul_[RIGHT] =0;
+ head_l_drul_[LEFT] =0;
+ same_pitch_b_ =false;
}
+
+/*
+ ugh: direction of the Tie is more complicated. See [Ross] p136 and further
+ */
void
Tie::set_default_dir()
{
- int m= (left_head_l_->position_i_ + right_head_l_->position_i_) /2 ;
- dir_i_ = (m < 5)? -1:1; // ugh
+ int m= (head_l_drul_[LEFT]->position_i_
+ + head_l_drul_[RIGHT]->position_i_) /2;
+ 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;
}
-/**
- This is already getting hairy. Should use Note_head *heads[2]
- */
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_;
-
- if ( right_head_l_ && right_head_l_->extremal_i_) {
- right_pos_i_ += 2*dir_i_;
- right_dx_f_ -= 0.25;
- } else
- right_dx_f_ -= 0.5;
-
- if (left_head_l_ && left_head_l_->extremal_i_) {
- left_pos_i_ += 2*dir_i_;
- left_dx_f_ += 0.25;
- } else
- left_dx_f_ += 0.5;
-
- if (!right_head_l_)
- right_pos_i_ = left_pos_i_;
- if (! left_head_l_)
- left_pos_i_ = right_pos_i_;
-}
+ // URG: share code with slur!
+ assert (head_l_drul_[LEFT] || head_l_drul_[RIGHT]);
+
+ Real notewidth = paper ()->note_width ();
+ Real interline_f = paper ()->interline_f ();
+ Real tie_min = paper ()->get_var ("tie_x_minimum");
+
+ /*
+ [OSU]: slur and tie placement
+ ties:
+ * x = inner raakpunt - d * gap
+ * y = length < 5ss : horizontal raakpunt
+ y = length >= 5ss : y next interline - d * 0.25 ss
+ --> height <= 5 length ?? we use <= 3 length, now...
+ */
+
+ Real gap_f = paper ()->get_var ("slur_x_gap");
+
+ Direction d = LEFT;
+ do
+ {
+ dy_f_drul_[d] = .5 * interline_f * (head_l_drul_[d]
+ ? head_l_drul_[d]->position_i_
+ : head_l_drul_[(Direction)-d]->position_i_);
+ }
+ while (flip(&d) != LEFT);
+
+ do
+ {
+ // tie attached to outer notehead
+ if (head_l_drul_[d] && head_l_drul_[d]->extremal_i_)
+ {
+ if (d == LEFT)
+ dx_f_drul_[d] += notewidth;
+ dx_f_drul_[d] += -d * gap_f;
+ /* attach to outer 3/4 end of head */
+ dy_f_drul_[d] += dir_ * 0.25 * interline_f;
+ }
+ // tie attached to inner notehead
+ else if (head_l_drul_[d] && d == LEFT)
+ {
+ dx_f_drul_[d] += -d * notewidth;
+ }
+ // uhm? loose end of tie // tie attached to stem
+ else
+ {
+ dx_f_drul_[d] = -d * (spanned_drul_[d]->width ().length ()
+ -0.5 * notewidth);
+ }
+ }
+ while (flip(&d) != LEFT);
+
+ // now that both are set, do dependent
+ do
+ {
+ // tie attached to outer notehead
+ if (!head_l_drul_[d])
+ {
+ if (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT] < tie_min)
+ {
+ dx_f_drul_[d] -= d * tie_min
+ - (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT]);
+ dx_f_drul_[d] = dx_f_drul_[(Direction)-d] + d * tie_min;
+ }
+
+ dy_f_drul_[d] = dy_f_drul_[(Direction) -d];
+ }
+ }
+ while (flip(&d) != LEFT);
+
+ /*
+ Avoid too steep ties
+ * slur from notehead to stemend: c''()b''
+ */
+ Real damp_f = paper ()->get_var ("tie_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 () += width ().length ();
+
+ Real ratio_f = abs (d_off.y () / d_off.x ());
+ if (ratio_f > damp_f)
+ dy_f_drul_[(Direction)(- dir_ * sign (d_off.y ()))] -=
+ dir_ * (damp_f - ratio_f) * d_off.x ();
+}
void
-Tie::do_substitute_dependency(Score_elem*o, Score_elem*n)
+Tie::do_substitute_dependency (Score_element*o, Score_element*n)
{
- Note_head *new_l =n?(Note_head*)n->item():0;
- if (o->item() == left_head_l_)
- left_head_l_ = new_l;
- else if (o->item() == right_head_l_)
- right_head_l_ = new_l;
+ Note_head *new_l =n?(Note_head*)dynamic_cast <Item *> (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;
}
-
-
-IMPLEMENT_IS_TYPE_B1(Tie,Bow);
projects / lilypond.git / blobdiff