2 bow.cc -- implement Bow
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
12 #include "paper-def.hh"
13 #include "molecule.hh"
20 dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = 0.0;
21 dx_f_drul_[LEFT] = dx_f_drul_[RIGHT] = 0.0;
25 Bow::do_brew_molecule_p () const
27 Real thick = paper_l ()->get_var ("slur_thickness");
28 Array<Offset> c = get_controls ();
29 Real dy = c[3].y () - c[0].y ();
32 SCM d = get_elt_property (dashed_scm_sym);
34 a = lookup_l ()->slur (c);
36 a = lookup_l ()->dashed_slur (c, thick, gh_scm2int (SCM_CDR(d)));
38 if (check_debug && !monitor->silent_b ("Bow"))
41 cout << "******" << i++ << "******" << endl;
42 cout << "c0.y: " << c[0].y () << endl;
43 cout << "c3.y: " << c[3].y () << endl;
44 cout << "dy: " << dy << endl;
45 cout << "dy_f_l: " << dy_f_drul_[LEFT] << endl;
46 cout << "dy_f_r: " << dy_f_drul_[RIGHT] << endl;
47 cout << "dy_f: " << dy_f_drul_[RIGHT] - dy_f_drul_[LEFT] << endl;
49 a.translate (Offset (dx_f_drul_[LEFT], dy_f_drul_[LEFT]));
51 return new Molecule (a);
57 Real dy = dy_f_drul_[RIGHT] - dy_f_drul_[LEFT];
58 Real dx = extent(X_AXIS).length ();
60 return Offset (dx / 2, dy);
66 Ugh. Control points are too crude measures.
69 Bow::do_height () const
72 Array<Offset> c (get_controls());
73 for (int i=0; i < c.size (); i++)
75 Real y = c[i][Y_AXIS] + dy_f_drul_[LEFT];
76 iv.unite (Interval (y,y));
83 Bow::get_controls () const
85 Bezier_bow b (paper_l ());
86 b.set (get_encompass_offset_arr (), dir_);
88 Array<Offset> controls;
89 controls.set_size (8);
90 for (int i = 0; i < 4; i++)
91 controls[i] = b.control_[i];
92 for (int i = 0; i < 4; i++)
93 controls[i + 4] = b.return_[i];
98 Bow::get_encompass_offset_arr () const
100 Offset d (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT],
101 dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]);
102 d.x() += extent (X_AXIS). length ();
105 notes.push (Offset (0, 0));