source file of the GNU LilyPond music typesetter
- (c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
TODO: This is way too hairy
*/
#include "stem.hh"
-#include "dimen.hh"
#include "debug.hh"
#include "paper-def.hh"
#include "note-head.hh"
#include "beam.hh"
#include "rest.hh"
-const int STEMLEN=7;
-IMPLEMENT_IS_TYPE_B1 (Stem,Item);
+
+Stem::~Stem ()
+{
+}
Stem::Stem ()
{
/*
TODO: staff-size
*/
- abbrev_flag_i_ = 0;
beam_l_ = 0;
beams_left_i_ = 0;
beams_right_i_ = 0;
+ mult_i_ = 0;
yextent_drul_[DOWN] = yextent_drul_[UP] = 0;
flag_i_ = 2;
dir_ = CENTER;
+ beam_dir_ = CENTER;
+ dir_forced_b_ = false;
stem_xdir_ = LEFT;
staff_size_i_ = 8;
Stem::do_print () const
{
#ifndef NPRINT
- DOUT << "flag "<< flag_i_ << "abbrev_flag_i_" << abbrev_flag_i_;
+ DOUT << "flag "<< flag_i_;
if (beam_l_)
DOUT << "beamed";
#endif
}
Real
-Stem::stem_start_f () const
+Stem::stem_begin_f () const
{
return yextent_drul_[Direction(-dir_)];
}
+Real
+Stem::chord_start_f () const
+{
+ return head_positions()[dir_] * paper ()->internote_f ();
+}
+
Real
Stem::stem_end_f () const
{
return yextent_drul_[dir_];
}
-
void
Stem::set_stemend (Real se)
{
// todo: margins
if (dir_ && dir_ * head_positions()[dir_] >= se*dir_)
- warning (_("Weird stem size; check for narrow beams"));
+ warning (_ ("weird stem size; check for narrow beams"));
yextent_drul_[dir_] = se;
}
void
-Stem::add (Rhythmic_head *n)
+Stem::add_head (Rhythmic_head *n)
{
n->add_dependency (this); // ?
- if (n->is_type_b (Note_head::static_name ()))
+ if (dynamic_cast<Note_head *> (n))
{
head_l_arr_.push ((Note_head*)n);
}
- else if (n->is_type_b (Rest::static_name ()))
+ else if (dynamic_cast<Rest *> (n))
{
rest_l_arr_.push ((Rest*)n);
}
}
int
-Stem::get_center_distance (Direction d)
+Stem::get_center_distance (Direction d) const
{
int staff_center = 0;
int distance = d*(head_positions()[d] - staff_center);
}
Direction
-Stem::get_default_dir ()
+Stem::get_default_dir () const
{
- return (get_center_distance (UP) >=
+ return (get_center_distance (UP) >
get_center_distance (DOWN))
? DOWN
: UP;
}
+Direction
+Stem::get_dir () const
+{
+ return dir_;
+}
void
Stem::set_default_dir ()
void
Stem::set_default_stemlen ()
{
- Real len = STEMLEN;
- Real dy = paper ()->interbeam_f ();
+ /*
+ TODO
+ urg; this should be handled by Stem_info
+ */
- // ugh, should get nice *rule* for this
- if (abbrev_flag_i_ > 1)
- len += (abbrev_flag_i_ - 1)* dy / 2;
+ Real length_f = paper ()->get_var ("stem_length");
+ Real shorten_f = paper ()->get_var ("forced_stem_shorten");
+ Real internote_f = paper ()->internote_f ();
+ length_f /= internote_f;
+ shorten_f /= internote_f;
+ Real len = length_f;
if (!dir_)
set_default_dir ();
-
- /* If the stem points in the "wrong" direction, it should be
- shortened, according to [Roush & Gourlay]. Their suggestion to knock off
- a whole staffspace is a bit drastical though.
- */
+ /*
+ stems in unnatural (forced) direction should be shortened,
+ accoding to [Roush & Gourlay]
+ */
else if (dir_ != get_default_dir ())
- len -= 1.0;
+ len -= shorten_f / internote_f;
if (flag_i_ >= 5)
len += 2.0;
set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + len :
head_positions()[SMALLER] - len);
-
if (dir_ * stem_end_f () < 0)
{
set_stemend (0);
}
}
-
+//xxx
void
Stem::set_default_extents ()
{
Stem::do_width () const
{
Interval r (0, 0);
- if (abbrev_flag_i_)
- {
- r = abbrev_mol ().extent ().x ();
- }
- else if (beam_l_ || abs (flag_i_) <= 2)
+ if (beam_l_ || abs (flag_i_) <= 2)
; // TODO!
else
{
- Paper_def*p= paper ();
- r = p->lookup_l ()->flag (flag_i_, dir_).dim_.x ();
+ r = lookup_l ()->flag (flag_i_, dir_).dim_.x ();
r += note_delta_f ();
}
return r;
-Molecule
-Stem::abbrev_mol () const
-{
- Real dy = paper ()->interbeam_f ();
- Real w = 1.5 * paper ()->lookup_l ()->ball (2).dim_.x ().length ();
- Real beamdy = paper ()->interline_f () / 2;
-
- int beams_i = 0;
- Real slope = paper ()->internote_f () / 4;
-
- if (beam_l_) {
- // huh?
- slope = 2 * beam_l_->slope;
- // ugh, rather calc from Abbreviation_req
- beams_i = beams_right_i_ >? beams_left_i_;
- }
- paper ()->lookup_l ()->beam (slope, 20 PT);
-
- Molecule beams;
- Atom a (paper ()->lookup_l ()->beam (slope, w));
- a.translate (Offset(- w / 2, stem_end_f () - (w / 2 * slope)));
-
- // ugh
- if (!beams_i)
- a.translate_axis (dy + beamdy - dir_ * dy, Y_AXIS);
- else
- a.translate_axis (2 * beamdy - dir_ * (beamdy - dy), Y_AXIS);
-
- for (int i = 0; i < abbrev_flag_i_; i++)
- {
- Atom b (a);
- b.translate_axis (-dir_ * dy * (beams_i + i), Y_AXIS);
- beams.add (b);
- }
-
- return beams;
-}
const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh!
Stem::brew_molecule_p () const
{
Molecule *mol_p =new Molecule;
- Paper_def *p =paper ();
Drul_array<Real> stem_y = yextent_drul_;
- Real dy = p->internote_f ();
+ Real dy = paper ()->internote_f ();
Real head_wid = 0;
if (!invisible_b ())
{
- Atom ss =p->lookup_l ()->stem (stem_y[DOWN]*dy,
+ Atom ss =lookup_l ()->stem (stem_y[DOWN]*dy,
stem_y[UP]*dy);
- mol_p->add (Atom (ss));
+ mol_p->add_atom (ss);
}
- if (!beam_l_ &&abs (flag_i_) > 2)
+ if (!beam_l_ && abs (flag_i_) > 2)
{
- Atom fl = p->lookup_l ()->flag (flag_i_, dir_);
+ Atom fl = lookup_l ()->flag (flag_i_, dir_);
fl.translate_axis(stem_y[dir_]*dy, Y_AXIS);
- mol_p->add(fl);
- assert (!abbrev_flag_i_);
+ mol_p->add_atom (fl);
}
- if (abbrev_flag_i_)
- mol_p->add (abbrev_mol ());
-
if (head_l_arr_.size())
{
mol_p->translate_axis (note_delta_f (), X_AXIS);
Stem::note_delta_f () const
{
Real r=0;
- if (head_l_arr_.size() && stem_xdir_ != CENTER)
+ if (head_l_arr_.size())
{
Interval head_wid(0, head_l_arr_[0]->width ().length ());
Real rule_thick(paper ()->rule_thickness ());
Interval stem_wid(-rule_thick/2, rule_thick/2);
- r = head_wid[stem_xdir_] - stem_wid[stem_xdir_];
+ if (stem_xdir_ == CENTER)
+#define EGCS_ICE
+#ifndef EGCS_ICE
+ r = head_wid.center ();
+#else
+ r = (head_wid.min () + head_wid.max ()) / 2;
+#endif
+ else
+ r = head_wid[stem_xdir_] - stem_wid[stem_xdir_];
}
return r;
}
+
Real
Stem::hpos_f () const
{
- return note_delta_f () +Item::hpos_f ();
+ return note_delta_f () + Item::hpos_f ();
}
/*
TODO: head_l_arr_/rest_l_arr_ in do_substitute_dependent ()
*/
void
- Stem::do_substitute_dependency (Score_elem*o,Score_elem*n)
+ Stem::do_substitute_dependency (Score_element*o,Score_element*n)
{
- Item * o_l = o->item ();
- Item * n_l = n? n->item () : 0;
+ Item * o_l = dynamic_cast <Item *> (o);
+ Item * n_l = n? dynamic_cast <Item *> (n) : 0;
head_l_arr_.substitute ((Note_head*)o_l, (Note_head*)n_l);
rest_l_arr_.substitute ((Rest*)o_l, (Rest*)n_l);
}
projects / lilypond.git / blobdiff