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;
21 set_bounds (d, head_l);
23 add_dependency (head_l);
28 head_l_drul_[RIGHT] =0;
29 head_l_drul_[LEFT] =0;
35 ugh: direction of the Tie is more complicated. See [Ross] p136 and further
38 Tie::set_default_dir()
40 int m= (head_l_drul_[LEFT]->position_i_
41 + head_l_drul_[RIGHT]->position_i_) /2;
42 dir_ = (m < 0)? DOWN : UP;
46 Tie::do_add_processing()
48 if (!(head_l_drul_[LEFT] && head_l_drul_[RIGHT]))
49 warning (_("Lonely tie.. "));
52 Drul_array<Note_head *> new_head_drul = head_l_drul_;
55 new_head_drul[d] = head_l_drul_[(Direction)-d];
56 } while ((d *= -1) != LEFT);
57 head_l_drul_ = new_head_drul;
61 Tie::do_post_processing()
63 Real nw_f = paper()->note_width ();
64 assert (head_l_drul_[LEFT] || head_l_drul_[RIGHT]);
69 pos_i_drul_[d] = (head_l_drul_[d])?
70 head_l_drul_[d]->position_i_ : head_l_drul_[(Direction)-d]->position_i_;
72 while ((d *= -1) != LEFT);
76 if (head_l_drul_[d] && head_l_drul_[d]->extremal_i_)
78 pos_i_drul_[d] += 2*dir_;
79 dx_f_drul_[d] += d * 0.25;
81 else if (head_l_drul_[d])
82 dx_f_drul_[d] += d*0.5;
85 pos_i_drul_[d] = pos_i_drul_[(Direction) -d];
87 *(spanned_drul_[d]->width ().length ()/nw_f -0.5);
90 while ((d *= -1) != LEFT);
96 Tie::do_substitute_dependency (Score_elem*o, Score_elem*n)
98 Note_head *new_l =n?(Note_head*)n->item():0;
99 if (o->item() == head_l_drul_[LEFT])
100 head_l_drul_[LEFT] = new_l;
101 else if (o->item() == head_l_drul_[RIGHT])
102 head_l_drul_[RIGHT] = new_l;
105 IMPLEMENT_IS_TYPE_B1(Tie,Bow);