2 crescendo.cc -- implement Crescendo
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "crescendo.hh"
12 #include "dimensions.hh"
13 #include "paper-def.hh"
15 #include "score-column.hh"
17 Crescendo::Crescendo ()
20 dyn_b_drul_[LEFT] = dyn_b_drul_[RIGHT] =false;
27 Crescendo::get_symbol () const
29 Real w_dim = extent (X_AXIS).length ();
30 Real absdyn_dim = paper_l ()-> get_realvar (ly_symbol ("crescendo_shorten"));
31 if (dyn_b_drul_[LEFT])
35 if (dyn_b_drul_[RIGHT])
42 warning (_ ("crescendo") + " " + _ ("too small"));
46 Drul_array<bool> broken;
49 Score_column* s = dynamic_cast<Score_column*>(spanned_drul_[d]); // UGH
50 broken[d] = (!s->musical_b ());
51 } while (flip (&d) != LEFT);
54 bool continued = broken[Direction (-grow_dir_)];
55 Real height = paper_l()->staffheight_f () / 6;
57 return Molecule (lookup_l ()->hairpin (w_dim, height, grow_dir_ < 0, continued));
61 Crescendo::do_brew_molecule_p () const
64 Real absdyn_dim = paper_l ()-> get_realvar (ly_symbol ("crescendo_shorten"));
66 if (dyn_b_drul_[LEFT])
67 x_off_dim += absdyn_dim;
70 Molecule s (get_symbol ());
71 m_p->add_molecule (s);
72 m_p->translate_axis (x_off_dim, X_AXIS);