source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1996, 1997--1999 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;
+void
+Stem::set_direction (Direction d)
+{
+ if (!dir_)
+ warning ("Stem direction set already!");
-IMPLEMENT_IS_TYPE_B1 (Stem,Item);
+ dir_ = d;
-Stem::Stem ()
-{
/*
- TODO: staff-size
- */
- beam_l_ = 0;
- beams_left_i_ = 0;
- beams_right_i_ = 0;
- mult_i_ = 0;
+ todo
+ */
+}
+Stem::Stem ()
+{
+ beams_i_drul_[LEFT] = beams_i_drul_[RIGHT] = -1;
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;
-
- beam_gap_i_ = 0;
+ beam_l_ = 0;
}
Interval_t<int>
Stem::head_positions () const
{
+ /*
+ Mysterious FreeBSD fix by John Galbraith. Somehow, the empty intervals
+ trigger FP exceptions on FreeBSD. Fix: do not return infinity
+
+ */
+ if (!head_l_arr_.size ())
+ {
+ return Interval_t<int> (100,-100);
+ }
+
Interval_t<int> r;
for (int i =0; i < head_l_arr_.size (); i++)
{
Stem::do_print () const
{
#ifndef NPRINT
- DOUT << "flag "<< flag_i_ ;
+ DOUT << "flag "<< flag_i_;
if (beam_l_)
DOUT << "beamed";
#endif
Real
Stem::chord_start_f () const
{
- return head_positions()[dir_] * paper ()->internote_f ();
+ return head_positions()[dir_] * staff_line_leading_f ()/2.0;
}
Real
{
// 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 (Note_head *nh = dynamic_cast<Note_head *> (n))
{
- head_l_arr_.push ((Note_head*)n);
+ head_l_arr_.push (nh);
}
- else if (n->is_type_b (Rest::static_name ()))
+ else if (Rest *r = dynamic_cast<Rest *> (n))
{
- rest_l_arr_.push ((Rest*)n);
+ rest_l_arr_.push (r);
}
}
}
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) >
get_center_distance (DOWN))
}
Direction
-Stem::get_dir ()
+Stem::get_dir () const
{
return dir_;
}
void
Stem::set_default_stemlen ()
{
- Real len = STEMLEN;
- Real dy = paper ()->interbeam_f (mult_i_);
+ Real internote_f = staff_line_leading_f ()/2.0;
+ Real length_f = paper_l ()->get_var ("stem_length0") / internote_f;
+ Real shorten_f = paper_l ()->get_var ("forced_stem_shorten0") / internote_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.
- */
- else if (dir_ != get_default_dir ())
- len -= 1.0;
+ /*
+ stems in unnatural (forced) direction should be shortened,
+ according to [Roush & Gourlay]
+ */
+ if (((int)chord_start_f ())
+ && (dir_ != get_default_dir ()))
+ length_f -= shorten_f;
if (flag_i_ >= 5)
- len += 2.0;
+ length_f += 2.0;
if (flag_i_ >= 6)
- len += 1.0;
+ length_f += 1.0;
- set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + len :
- head_positions()[SMALLER] - len);
-
+ set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + length_f:
+ head_positions()[SMALLER] - length_f);
if (dir_ * stem_end_f () < 0)
- {
- set_stemend (0);
- }
+ set_stemend (0);
}
+//xxx
void
Stem::set_default_extents ()
{
if (!stem_length_f ())
set_default_stemlen ();
-
- if (dir_ == UP)
- stem_xdir_ = RIGHT;
- if (invisible_b ())
- stem_xdir_ = CENTER;
}
-/*
- TODO
-
- move into note_column.cc
-
- */
void
Stem::set_noteheads ()
{
if (dir_ < 0)
head_l_arr_.reverse ();
- head_l_arr_[0]->extremal_i_ = -1;
- head_l_arr_.top ()->extremal_i_ = 1;
+ Note_head * beginhead = head_l_arr_[0];
+ beginhead->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
+ if (beginhead != head_l_arr_.top ())
+ head_l_arr_.top ()->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
+
int parity=1;
- int lastpos = head_l_arr_[0]->position_i_;
+ int lastpos = beginhead->position_i_;
for (int i=1; i < head_l_arr_.size (); i ++)
{
int dy =abs (lastpos- head_l_arr_[i]->position_i_);
if (dy <= 1)
{
if (parity)
- head_l_arr_[i]->x_dir_ = (stem_xdir_ == LEFT) ? LEFT : RIGHT;
+ head_l_arr_[i]->flip_around_stem (dir_);
parity = !parity;
}
else
set_default_extents ();
set_noteheads ();
flag_i_ = flag_i_;
- transparent_b_ = invisible_b ();
+ if (invisible_b ())
+ {
+ set_elt_property (transparent_scm_sym, SCM_BOOL_T);
+ }
set_empty (invisible_b ());
}
; // 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;
const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh!
Molecule*
-Stem::brew_molecule_p () const
+Stem::do_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 = staff_line_leading_f ()/2.0;
Real head_wid = 0;
if (head_l_arr_.size ())
- head_wid = head_l_arr_[0]->width ().length ();
+ head_wid = head_l_arr_[0]->extent (X_AXIS).length ();
stem_y[Direction(-dir_)] += dir_ * head_wid * tan(ANGLE)/(2*dy);
if (!invisible_b ())
{
- Atom ss =p->lookup_l ()->stem (stem_y[DOWN]*dy,
+ Molecule ss =lookup_l ()->stem (stem_y[DOWN]*dy,
stem_y[UP]*dy);
- mol_p->add (Atom (ss));
+ mol_p->add_molecule (ss);
}
- if (!beam_l_ &&abs (flag_i_) > 2)
+ if (!beam_l_ && abs (flag_i_) > 2)
{
- Atom fl = p->lookup_l ()->flag (flag_i_, dir_);
+ Molecule fl = lookup_l ()->flag (flag_i_, dir_);
fl.translate_axis(stem_y[dir_]*dy, Y_AXIS);
- mol_p->add(fl);
+ mol_p->add_molecule (fl);
}
if (head_l_arr_.size())
Real r=0;
if (head_l_arr_.size())
{
- Interval head_wid(0, head_l_arr_[0]->width ().length ());
- Real rule_thick(paper ()->rule_thickness ());
+ Interval head_wid(0, head_l_arr_[0]->extent (X_AXIS).length ());
+ Real rule_thick(paper_l ()->rule_thickness ());
Interval stem_wid(-rule_thick/2, rule_thick/2);
- if (stem_xdir_ == CENTER)
+ if (dir_ == CENTER)
r = head_wid.center ();
else
- r = head_wid[stem_xdir_] - stem_wid[stem_xdir_];
+ r = head_wid[dir_] - stem_wid[dir_];
}
return r;
}
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_element_pointer (Score_element*o,Score_element*n)
{
- Item * o_l = o->item ();
- Item * n_l = n? n->item () : 0;
- head_l_arr_.substitute ((Note_head*)o_l, (Note_head*)n_l);
- rest_l_arr_.substitute ((Rest*)o_l, (Rest*)n_l);
+ if (Note_head*h=dynamic_cast<Note_head*> (o))
+ head_l_arr_.substitute (h, dynamic_cast<Note_head*>(n));
+ if (Rest *r=dynamic_cast<Rest*> (o))
+ rest_l_arr_.substitute (r, dynamic_cast<Rest*>(n));
+ if (Beam* b = dynamic_cast<Beam*> (o))
+ {
+ if (b == beam_l_)
+ beam_l_ = dynamic_cast<Beam*> (n);
+ }
+ Staff_symbol_referencer::do_substitute_element_pointer (o,n);
}
-
projects / lilypond.git / blobdiff