2 tie.cc -- implement Tie
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
9 #include "paper-def.hh"
11 #include "note-head.hh"
17 Tie::set_head (Direction d, Note_head * head_l)
19 assert (!head_l_drul_[d]);
20 head_l_drul_[d] = head_l;
22 add_dependency (head_l);
27 head_l_drul_[RIGHT] =0;
28 head_l_drul_[LEFT] =0;
33 Tie::set_default_dir()
35 int m= (head_l_drul_[LEFT]->position_i_ + head_l_drul_[RIGHT]->position_i_) /2;
36 dir_ = (m < 5)? DOWN : UP; // UGH
40 Tie::do_add_processing()
42 if (!(head_l_drul_[LEFT] && head_l_drul_[RIGHT]))
43 warning ("Lonely tie.. ");
45 set_bounds(LEFT,head_l_drul_[LEFT]);
46 set_bounds(RIGHT,head_l_drul_[RIGHT]);
50 Tie::do_post_processing()
52 Real nw_f = paper()->note_width ();
53 assert (head_l_drul_[LEFT] || head_l_drul_[RIGHT]);
58 pos_i_drul_[d] = (head_l_drul_[d])?
59 head_l_drul_[d]->position_i_ : head_l_drul_[(Direction)-d]->position_i_;
61 while ((d *= -1) != LEFT);
65 if (head_l_drul_[d] && head_l_drul_[d]->extremal_i_)
67 pos_i_drul_[d] += 2*dir_;
68 dx_f_drul_[d] += d * 0.25;
70 else if (head_l_drul_[d])
71 dx_f_drul_[d] += d*0.5;
74 pos_i_drul_[d] = pos_i_drul_[(Direction) -d];
76 *(spanned_drul_[d]->width ().length ()/nw_f -0.5);
79 while ((d *= -1) != LEFT);
85 Tie::do_substitute_dependency (Score_elem*o, Score_elem*n)
87 Note_head *new_l =n?(Note_head*)n->item():0;
88 if (o->item() == head_l_drul_[LEFT])
89 head_l_drul_[LEFT] = new_l;
90 else if (o->item() == head_l_drul_[RIGHT])
91 head_l_drul_[RIGHT] = new_l;
94 IMPLEMENT_IS_TYPE_B1(Tie,Bow);