+/*
+ beam.cc -- implement Beam
+
+ source file of the GNU GNU LilyPond music typesetter
+
+ (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+
+ TODO
+
+ Less hairy code. Better slope calculations.
+ knee: ([\stem 1; c8 \stem -1; c8]
+
+*/
+
#include "varray.hh"
#include "proto.hh"
Stem_info::Stem_info(Stem const *s)
{
- x = s->hindex();
- int dir = s->dir;
- idealy = max(dir*s->top, dir*s->bot);
- miny = max(dir*s->minnote, dir*s-> maxnote);
+ x = s->hpos_f();
+ int dir = s->dir_i_;
+ idealy = dir * s->stem_end_f();
+ miny = dir * s->stem_start_f();
assert(miny <= idealy);
-
}
+
/* *************** */
+void
+Beam::do_break_at(PCol*l, PCol*r)
+{
+ assert (l->line_l_ == r->line_l_);
+}
+
+
Offset
Beam::center()const
{
- assert(status >= POSTCALCED);
-
Real w=(paper()->note_width() + width().length())/2.0;
- return Offset(w, (left_pos + w* slope)*paper()->internote());
+ return Offset(w, (left_pos + w* slope)*paper()->internote_f());
}
void
Beam::add(Stem*s)
{
- stems.bottom().add(s);
+ stems.push(s);
s->add_dependency(this);
- s->print_flag = false;
+ s->print_flag_b_ = false;
}
void
Beam::set_default_dir()
{
- int dirs[2];
- dirs[0]=0; dirs[1] =0;
- for (iter_top(stems,i); i.ok(); i++) {
- int d = i->get_default_dir();
- dirs[(d+1)/2] ++;
- }
- dir_i_ = (dirs[0] > dirs[1]) ? -1 : 1;
- for (iter_top(stems,i); i.ok(); i++) {
- i->dir = dir_i_;
+ int dirs_single = 0, dirs_chord = 0;
+ for (int i=0; i <stems.size(); i++) {
+ Stem *sl = stems[i];
+ if (sl->chord_b())
+ dirs_chord += sl->get_default_dir();
+ else
+ dirs_single += sl->get_center_distance();
}
+ dirs_single = -sign(dirs_single);
+ dir_i_ = (dirs_single + dirs_chord > 0) ? 1 : -1;
+
+ for (int i=0; i <stems.size(); i++) {
+ Stem *sl = stems[i];
+ sl->dir_i_ = dir_i_;
+ }
}
/*
Beam::solve_slope()
{
Array<Stem_info> sinfo;
- for (iter_top(stems,i); i.ok(); i++) {
+ for (int j=0; j <stems.size(); j++) {
+ Stem *i = stems[j];
+
i->set_default_extents();
+ if (i->invisible_b())
+ continue;
+
Stem_info info(i);
sinfo.push(info);
}
left_pos *= dir_i_;
slope *= dir_i_;
- // URG
- Real sl = slope*paper()->internote();
+ // ugh
+ Real sl = slope*paper()->internote_f();
paper()->lookup_l()->beam(sl, 20 PT);
- slope = sl /paper()->internote();
+ slope = sl /paper()->internote_f();
}
void
Beam::set_stemlens()
{
- iter_top(stems,s);
- Real x0 = s->hindex();
- for (; s.ok() ; s++) {
- Real x = s->hindex()-x0;
+ Real x0 = stems[0]->hpos_f();
+ for (int j=0; j <stems.size(); j++) {
+ Stem *s = stems[j];
+
+ Real x = s->hpos_f()-x0;
s->set_stemend(left_pos + slope * x);
}
}
Array<int> b;
{
- iter_top(stems,s);
Array<int> flags;
- for (; s.ok(); s++) {
- int f = intlog2(abs(s->flag))-2;
+ for (int j=0; j <stems.size(); j++) {
+ Stem *s = stems[j];
+
+ int f = intlog2(abs(s->flag_i_))-2;
assert(f>0);
flags.push(f);
}
assert(stems.size() == b.size()/2);
}
- iter_top(stems,s);
- for (int i=0; i < b.size() && s.ok(); i+=2, s++) {
- s->beams_left = b[i];
- s->beams_right = b[i+1];
+ for (int j=0, i=0; i < b.size() && j <stems.size(); i+= 2, j++) {
+ Stem *s = stems[j];
+ s->beams_left_i_ = b[i];
+ s->beams_right_i_ = b[i+1];
}
}
-
-// todo.
-Spanner *
-Beam::do_break_at( PCol *, PCol *) const
-{
- Beam *beam_p= new Beam(*this);
-
- return beam_p;
-}
-
void
Beam::do_pre_processing()
{
- left_col_l_ = (*stems.top()) ->pcol_l_;
- right_col_l_ = (*stems.bottom())->pcol_l_;
+ left_col_l_ = stems[0] ->pcol_l_;
+ right_col_l_ = stems.top()->pcol_l_;
assert(stems.size()>1);
if (!dir_i_)
set_default_dir();
Interval
-Beam::width() const
+Beam::do_width() const
{
- Beam * me = (Beam*) this; // ugh
- return Interval( (*me->stems.top()) ->hindex(),
- (*me->stems.bottom()) ->hindex() );
+ return Interval( stems[0]->hpos_f(),
+ stems.top()->hpos_f() );
}
/*
Molecule
Beam::stem_beams(Stem *here, Stem *next, Stem *prev)const
{
- assert( !next || next->hindex() > here->hindex() );
- assert( !prev || prev->hindex() < here->hindex() );
- Real dy=paper()->internote()*2;
+ assert( !next || next->hpos_f() > here->hpos_f() );
+ assert( !prev || prev->hpos_f() < here->hpos_f() );
+ Real dy=paper()->internote_f()*2;
Real stemdx = paper()->rule_thickness();
- Real sl = slope*paper()->internote();
+ Real sl = slope*paper()->internote_f();
paper()->lookup_l()->beam(sl, 20 PT);
Molecule leftbeams;
/* half beams extending to the left. */
if (prev) {
- int lhalfs= lhalfs = here->beams_left - prev->beams_right ;
- int lwholebeams= here->beams_left <? prev->beams_right ;
- Real w = (here->hindex() - prev->hindex())/4;
+ int lhalfs= lhalfs = here->beams_left_i_ - prev->beams_right_i_ ;
+ int lwholebeams= here->beams_left_i_ <? prev->beams_right_i_ ;
+ Real w = (here->hpos_f() - prev->hpos_f())/4;
Symbol dummy;
Atom a(dummy);
if (lhalfs) // generates warnings if not
}
if (next){
- int rhalfs = here->beams_right - next->beams_left;
- int rwholebeams = here->beams_right <? next->beams_left;
+ int rhalfs = here->beams_right_i_ - next->beams_left_i_;
+ int rwholebeams = here->beams_right_i_ <? next->beams_left_i_;
- Real w = next->hindex() - here->hindex();
+ Real w = next->hpos_f() - here->hpos_f();
Atom a = paper()->lookup_l()->beam(sl, w + stemdx);
int j = 0;
Molecule*
-Beam::brew_molecule_p() const return out;
+Beam::brew_molecule_p() const
{
- Real inter=paper()->internote();
+ Molecule *out=0;
+ Real inter=paper()->internote_f();
out = new Molecule;
- Real x0 = stems.top()->hindex();
-
- for (iter_top(stems,i); i.ok(); i++) {
- PCursor<Stem*> p(i-1);
- PCursor<Stem*> n(i+1);
- Stem * prev = p.ok() ? p.ptr() : 0;
- Stem * next = n.ok() ? n.ptr() : 0;
+ Real x0 = stems[0]->hpos_f();
+ for (int j=0; j <stems.size(); j++) {
+ Stem *i = stems[j];
+ Stem * prev = (j > 0)? stems[j-1] : 0;
+ Stem * next = (j < stems.size()-1) ? stems[j+1] :0;
Molecule sb = stem_beams(i, next, prev);
- Real x = i->hindex()-x0;
+ Real x = i->hpos_f()-x0;
sb.translate(Offset(x, (x * slope + left_pos)* inter));
out->add(sb);
}
out->translate(Offset(x0 - left_col_l_->hpos,0));
+ return out;
}
IMPLEMENT_STATIC_NAME(Beam);
#endif
}
-Beam::~Beam()
+void
+Beam::do_substitute_dependency(Score_elem*o,Score_elem*n)
{
-
+ int i;
+ while ((i=stems.find_i((Stem*)o->item())) >=0)
+ if (n) stems[i] = (Stem*) n->item();
+ else stems.del(i);
}
projects / lilypond.git / blobdiff