source file of the GNU LilyPond music typesetter
(c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
+
+ TODO: This is way too hairy
*/
#include "stem.hh"
-#include "dimen.hh"
+#include "dimen.hh"
#include "debug.hh"
#include "paper-def.hh"
#include "note-head.hh"
#include "molecule.hh"
#include "p-col.hh"
#include "misc.hh"
+#include "beam.hh"
+#include "rest.hh"
const int STEMLEN=7;
-int
-Stem::min_head_i()const
-{
- int m = 1000;
- for (int i =0; i < head_l_arr_.size(); i++)
- m = m <? head_l_arr_[i]->position_i_;
- return m;
-}
-
-int
-Stem::max_head_i() const
-{
- int m = -1000;
- for (int i =0; i < head_l_arr_.size(); i++)
- m = m >? head_l_arr_[i]->position_i_;
- return m;
-
-}
+IMPLEMENT_IS_TYPE_B1 (Stem,Item);
-Stem::Stem (int c)
+Stem::Stem ()
{
+ /*
+ TODO: staff-size
+ */
+ abbrev_flag_i_ = 0;
+ beam_l_ = 0;
beams_left_i_ = 0;
beams_right_i_ = 0;
- stem_bottom_f_ = stem_top_f_ = 0;
- flag_i_ = 4;
- dir_i_ =0;
- staff_size_i_ = c;
+ yextent_drul_[DOWN] = yextent_drul_[UP] = 0;
+ flag_i_ = 2;
+ dir_ = CENTER;
+ stem_xdir_ = LEFT;
+ staff_size_i_ = 8;
- print_flag_b_=true;
- stem_xoffset_f_ =0;
+ beam_gap_i_ = 0;
}
-
-IMPLEMENT_IS_TYPE_B1(Stem,Item);
+Interval_t<int>
+Stem::head_positions () const
+{
+ Interval_t<int> r;
+ for (int i =0; i < head_l_arr_.size (); i++)
+ {
+ int p = head_l_arr_[i]->position_i_;
+ r[BIGGER] = r[BIGGER] >? p;
+ r[SMALLER] = r[SMALLER] <? p;
+ }
+ return r;
+}
void
-Stem::do_print() const
+Stem::do_print () const
{
#ifndef NPRINT
- DOUT << "flag "<< flag_i_ << " print_flag_b_ " << print_flag_b_;
+ DOUT << "flag "<< flag_i_ << "abbrev_flag_i_" << abbrev_flag_i_;
+ if (beam_l_)
+ DOUT << "beamed";
#endif
}
-Real
-Stem::stem_length_f()const
+Real
+Stem::stem_length_f () const
{
- return stem_top_f_-stem_bottom_f_ ;
+ return yextent_drul_[UP]-yextent_drul_[DOWN] ;
}
Real
-Stem::stem_start_f()const
+Stem::stem_start_f () const
{
- return (dir_i_ < 0)? stem_top_f_ : stem_bottom_f_;
+ return yextent_drul_[Direction(-dir_)];
}
Real
-Stem::stem_end_f() const
+Stem::stem_end_f () const
{
- return (dir_i_ < 0)? stem_bottom_f_ : stem_top_f_;
+ return yextent_drul_[dir_];
}
Stem::set_stemend (Real se)
{
// todo: margins
- if (! ((dir_i_ > 0 && se >= max_head_i()) ||
- (se <= min_head_i() && dir_i_ <0)) )
- warning ("Weird stem size; check for narrow beams");
+ if (dir_ && dir_ * head_positions()[dir_] >= se*dir_)
+ warning (_("Weird stem size; check for narrow beams"));
- stem_top_f_ = (dir_i_ < 0) ? max_head_i() : se;
- stem_bottom_f_ = (dir_i_ < 0) ? se : min_head_i();
+
+ yextent_drul_[dir_] = se;
+ yextent_drul_[Direction(-dir_)] = head_positions()[-dir_];
+}
+
+int
+Stem::type_i () const
+{
+ return head_l_arr_[0]->balltype_i_;
}
void
-Stem::add (Note_head *n)
+Stem::add (Rhythmic_head *n)
{
- n->add_dependency (this);
- if (n->rest_b_)
+ n->add_dependency (this); // ?
+ if (n->is_type_b (Note_head::static_name ()))
{
- rest_l_arr_.push (n);
+ head_l_arr_.push ((Note_head*)n);
}
- else if (n->balltype_i_ == 0)
+ else if (n->is_type_b (Rest::static_name ()))
{
- whole_l_arr_.push (n);
- return;
- }
- else
- {
- head_l_arr_.push (n);
+ rest_l_arr_.push ((Rest*)n);
}
}
bool
-Stem::invisible_b()const
-{
- return !head_l_arr_.size();
-}
-
-// if dir_i_ is set we return fake values.
-
-int
-Stem::get_center_distance_from_top()
+Stem::invisible_b () const
{
- if (dir_i_)
- return (dir_i_ > 0) ? 0 : 1;
-
- int staff_center = staff_size_i_ / 2;
- int max = max_head_i() - staff_center;
- return max >? 0;
+ return (!head_l_arr_.size () ||
+ head_l_arr_[0]->balltype_i_ <= 0);
}
-// if dir_i_ is set we return fake values.
int
-Stem::get_center_distance_from_bottom()
+Stem::get_center_distance (Direction d)
{
- if (dir_i_)
- return (dir_i_ > 0) ? 1 : 0;
-
- int staff_center = staff_size_i_ / 2;
- int min = staff_center - min_head_i();
- return min >? 0;
+ int staff_center = 0;
+ int distance = d*(head_positions()[d] - staff_center);
+ return distance >? 0;
}
-int
-Stem::get_default_dir()
+Direction
+Stem::get_default_dir ()
{
- if (dir_i_)
- return dir_i_;
- return (get_center_distance_from_top() >=
- get_center_distance_from_bottom()) ? -1 : 1;
+ return (get_center_distance (UP) >=
+ get_center_distance (DOWN))
+ ? DOWN
+ : UP;
}
void
-Stem::set_default_dir()
+Stem::set_default_dir ()
{
- dir_i_ = get_default_dir();
+ dir_ = get_default_dir ();
}
void
-Stem::set_default_stemlen()
+Stem::set_default_stemlen ()
{
- if (!dir_i_)
- set_default_dir();
+ Real len = STEMLEN;
+ Real dy = paper ()->interbeam_f ();
+
+ // ugh, should get nice *rule* for this
+ if (abbrev_flag_i_ > 1)
+ len += (abbrev_flag_i_ - 1)* dy / 2;
+
+
+ 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;
+
+ if (flag_i_ >= 5)
+ len += 2.0;
+ if (flag_i_ >= 6)
+ len += 1.0;
- // ugh... how about non 5-line staffs?
- if ((max_head_i() < -2 && dir_i_ == 1)
- ||(min_head_i() > staff_size_i_ && dir_i_ == -1))
- {
- set_stemend (staff_size_i_ /2 -1);
- }
- else
- {
- set_stemend ((dir_i_ > 0) ? max_head_i() + STEMLEN :
- min_head_i() - STEMLEN);
+ set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + len :
+ head_positions()[SMALLER] - len);
+
+ if (dir_ * stem_end_f () < 0)
+ {
+ set_stemend (0);
}
}
-
void
-Stem::set_default_extents()
+Stem::set_default_extents ()
{
- if (!stem_length_f())
- set_default_stemlen();
+ if (!stem_length_f ())
+ set_default_stemlen ();
- set_stemend ((dir_i_< 0) ?
- max_head_i()-stem_length_f (): min_head_i () +stem_length_f ());
- if (dir_i_ > 0){
- stem_xoffset_f_ = paper()->note_width ()-paper ()->rule_thickness ();
- }
- else
- stem_xoffset_f_ = 0;
+
+ if (dir_ == UP)
+ stem_xdir_ = RIGHT;
+ if (invisible_b ())
+ stem_xdir_ = CENTER;
}
/*
TODO
-
+
move into note_column.cc
*/
void
-Stem::set_noteheads()
+Stem::set_noteheads ()
{
- if (!head_l_arr_.size())
- return;
+ if (!head_l_arr_.size ())
+ return;
head_l_arr_.sort (Note_head::compare);
- if (dir_i_ < 0)
- head_l_arr_.reverse();
-
+ if (dir_ < 0)
+ head_l_arr_.reverse ();
+
head_l_arr_[0]->extremal_i_ = -1;
- head_l_arr_.top()->extremal_i_ = 1;
+ head_l_arr_.top ()->extremal_i_ = 1;
int parity=1;
int lastpos = head_l_arr_[0]->position_i_;
- for (int i=1; i < head_l_arr_.size(); 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_i_ = (stem_xoffset_f_>0) ? 1:-1;
- parity = !parity;
- }
- else
- parity = 0;
- lastpos = head_l_arr_[i]->position_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;
+ parity = !parity;
+ }
+ else
+ parity = 0;
+ lastpos = head_l_arr_[i]->position_i_;
}
}
void
-Stem::do_pre_processing()
+Stem::do_pre_processing ()
{
- if (stem_bottom_f_== stem_top_f_)
- set_default_extents();
- set_noteheads();
- flag_i_ = dir_i_*abs (flag_i_);
- transparent_b_ = invisible_b();
- empty_b_ = invisible_b();
+ if (yextent_drul_[DOWN]== yextent_drul_[UP])
+ set_default_extents ();
+ set_noteheads ();
+ flag_i_ = flag_i_;
+ transparent_b_ = invisible_b ();
+ set_empty (invisible_b ());
}
Interval
-Stem::do_width()const
+Stem::do_width () const
{
- if (!print_flag_b_ || abs (flag_i_) <= 4)
- return Interval (0,0); // TODO!
- Paper_def*p= paper();
- Interval r (p->lookup_l()->flag (flag_i_).dim.x ());
- r+= stem_xoffset_f_;
+ Interval r (0, 0);
+ if (abbrev_flag_i_)
+ {
+ r = abbrev_mol ().extent ().x ();
+ }
+ else if (beam_l_ || abs (flag_i_) <= 2)
+ ; // TODO!
+ else
+ {
+ Paper_def*p= paper ();
+ r = p->lookup_l ()->flag (flag_i_, dir_).dim_.x ();
+ r += note_delta_f ();
+ }
return r;
}
-Molecule*
-Stem::brew_molecule_p()const
+
+
+Molecule
+Stem::abbrev_mol () const
{
- Molecule *out =0;
-
- Real bot = stem_bottom_f_;
- Real top = stem_top_f_;
+ 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)));
- assert (bot!=top);
-
- Paper_def *p =paper();
+ // 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);
+ }
- Real dy = p->internote_f();
- Symbol ss =p->lookup_l()->stem (bot*dy,top*dy);
+ return beams;
+}
+
+const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh!
+
+Molecule*
+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 ();
+
- out = new Molecule (Atom (ss));
+ Real head_wid = 0;
+ if (head_l_arr_.size ())
+ head_wid = head_l_arr_[0]->width ().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,
+ stem_y[UP]*dy);
+ mol_p->add (Atom (ss));
+ }
- if (print_flag_b_&&abs (flag_i_) > 4)
+ if (!beam_l_ &&abs (flag_i_) > 2)
{
- Symbol fl = p->lookup_l()->flag (flag_i_);
- Molecule m (fl);
- if (flag_i_ < -4){
- out->add_bottom (m);
- }
- else if (flag_i_ > 4)
- {
- out->add_top (m);
- }
- else
- assert (false);
+ Atom fl = p->lookup_l ()->flag (flag_i_, dir_);
+ fl.translate_axis(stem_y[dir_]*dy, Y_AXIS);
+ mol_p->add(fl);
+ assert (!abbrev_flag_i_);
}
- out->translate (stem_xoffset_f_, X_AXIS);
- return out;
+ if (abbrev_flag_i_)
+ mol_p->add (abbrev_mol ());
+
+ if (head_l_arr_.size())
+ {
+ mol_p->translate_axis (note_delta_f (), X_AXIS);
+ }
+ return mol_p;
}
Real
-Stem::hpos_f()const
+Stem::note_delta_f () const
+{
+ 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 stem_wid(-rule_thick/2, rule_thick/2);
+ r = head_wid[stem_xdir_] - stem_wid[stem_xdir_];
+ }
+ return r;
+}
+Real
+Stem::hpos_f () const
{
- return Item::hpos_f() + stem_xoffset_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_elem*o,Score_elem*n)
{
- Item * o_l = o->item();
- Item * n_l = n? n->item():0;
- whole_l_arr_.substitute ((Note_head*)o_l, (Note_head*)n_l);
+ 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 ((Note_head*)o_l, (Note_head*)n_l);
+ rest_l_arr_.substitute ((Rest*)o_l, (Rest*)n_l);
}
projects / lilypond.git / blobdiff