source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "bow.hh"
+#include "debug.hh"
#include "paper-def.hh"
+#include "molecule.hh"
#include "lookup.hh"
+#include "bezier.hh"
+#include "main.hh"
-Bow::Bow()
+Bow::Bow ()
{
- left_pos_i_ = right_pos_i_ = 0;
- left_dx_f_ = right_dx_f_ = 0.0;
+ dy_f_drul_[LEFT] = dy_f_drul_[RIGHT] = 0.0;
+ dx_f_drul_[LEFT] = dx_f_drul_[RIGHT] = 0.0;
}
+Molecule*
+Bow::do_brew_molecule_p () const
+{
+ Real thick = paper_l ()->get_var ("slur_thickness");
+ Array<Offset> c = get_controls ();
+ Real dy = c[3].y () - c[0].y ();
+ Molecule a;
+
+ SCM d = get_elt_property (dashed_scm_sym);
+ if (d == SCM_BOOL_F)
+ a = lookup_l ()->slur (c);
+ else
+ a = lookup_l ()->dashed_slur (c, thick, gh_scm2int (SCM_CDR(d)));
+
+ if (check_debug && !monitor->silent_b ("Bow"))
+ {
+ static int i = 1;
+ cout << "******" << i++ << "******" << endl;
+ cout << "c0.y: " << c[0].y () << endl;
+ cout << "c3.y: " << c[3].y () << endl;
+ cout << "dy: " << dy << endl;
+ cout << "dy_f_l: " << dy_f_drul_[LEFT] << endl;
+ cout << "dy_f_r: " << dy_f_drul_[RIGHT] << endl;
+ cout << "dy_f: " << dy_f_drul_[RIGHT] - dy_f_drul_[LEFT] << endl;
+ }
+ a.translate (Offset (dx_f_drul_[LEFT], dy_f_drul_[LEFT]));
+
+ Molecule* mol_p = new Molecule;
+ mol_p->add_molecule (a);
+
+ return mol_p;
+}
Offset
-Bow::center() const
+Bow::center () const
{
- int dy = right_pos_i_-left_pos_i_;
+ Real dy = dy_f_drul_[RIGHT] - dy_f_drul_[LEFT];
- Real w = width().length();
+ Real dx = extent(X_AXIS).length ();
- return Offset(w/2,dy * paper()->internote_f());
+ return Offset (dx / 2, dy);
}
-Molecule*
-Bow::brew_molecule_p() const
+
+/*
+ Ugh. Control points are too crude measures.
+ */
+Interval
+Bow::do_height () const
{
- Molecule*output = new Molecule;
- Real w = width().length();
-
- int dy = right_pos_i_ - left_pos_i_;
-
- Real nw_f = paper()->note_width();
- Real nh_f = paper()->internote_f();
-
-
- w+= (right_dx_f_ - left_dx_f_) * nw_f ;
- Real round_w = w; // slur lookup rounds the slurwidth .
-
- Symbol sl = paper()->lookup_l()->slur(dy , round_w, dir_i_);
-
- Real error = w-round_w;
-
- Atom a(sl);
- a.translate(Offset((left_dx_f_ + 0.5 )*nw_f + error/2,
- left_pos_i_ * nh_f));
- output->add(a);
- return output;
+ Interval iv;
+ Array<Offset> c (get_controls());
+ for (int i=0; i < c.size (); i++)
+ {
+ Real y = c[i][Y_AXIS];
+ iv.unite (Interval (y,y));
+ }
+ return iv;
+}
+
+
+Array<Offset>
+Bow::get_controls () const
+{
+ Bezier_bow b (paper_l ());
+ b.set (get_encompass_offset_arr (), dir_);
+ b.calc ();
+ Array<Offset> controls;
+ controls.set_size (8);
+ for (int i = 0; i < 4; i++)
+ controls[i] = b.control_[i];
+ for (int i = 0; i < 4; i++)
+ controls[i + 4] = b.return_[i];
+ return controls;
+}
+
+Array<Offset>
+Bow::get_encompass_offset_arr () const
+{
+ Offset d (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT],
+ dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]);
+ d.x() += extent (X_AXIS). length ();
+
+ Array<Offset> notes;
+ notes.push (Offset (0, 0));
+ notes.push (d);
+
+ return notes;
}
-IMPLEMENT_STATIC_NAME(Bow);