2 collision-reg.cc -- implement Collision_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "note-column.hh"
10 #include "collision.hh"
11 #include "dimension-cache.hh"
12 #include "engraver.hh"
15 collect Note_column, and as soon as there are 2 or more, put them in
16 a collision object. */
17 class Collision_engraver : public Engraver {
19 Link_array<Note_column> note_column_l_arr_;
22 virtual void acknowledge_element (Score_element_info);
23 virtual void process_acknowledged ();
24 virtual void do_pre_move_processing();
26 VIRTUAL_COPY_CONS(Translator);
32 Collision_engraver::process_acknowledged ()
34 if (col_p_ || note_column_l_arr_.size () < 2)
38 col_p_ = new Collision (get_property ("basicCollisionProperties"));
39 announce_element (Score_element_info (col_p_,0));
41 for (int i=0; i< note_column_l_arr_.size (); i++)
42 col_p_->add_column (note_column_l_arr_[i]);
46 Collision_engraver::acknowledge_element (Score_element_info i)
48 if (Note_column * c = dynamic_cast<Note_column *> (i.elem_l_))
50 /*should check Y axis? */
51 if (c->rest_b () || c->parent_l(X_AXIS))
54 note_column_l_arr_.push (c);
59 Collision_engraver::do_pre_move_processing()
63 typeset_element (col_p_);
66 note_column_l_arr_.clear ();
69 Collision_engraver::Collision_engraver()
76 ADD_THIS_TRANSLATOR(Collision_engraver);