source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1998, 1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
- TODO
+*/
- Less hairy code. knee: ([\stem 1; c8 \stem -1; c8]
-*/
+/*
+ [TODO]
+ * centre beam symbol
+ * less hairy code
+ * redo grouping
+ */
#include <math.h>
#include "p-col.hh"
-#include "varray.hh"
+#include "array.hh"
#include "proto.hh"
-#include "dimen.hh"
+#include "dimensions.hh"
#include "beam.hh"
#include "abbreviation-beam.hh"
#include "misc.hh"
#include "stem-info.hh"
-IMPLEMENT_IS_TYPE_B1(Beam, Spanner);
+IMPLEMENT_IS_TYPE_B1 (Beam, Spanner);
-Beam::Beam()
+Beam::Beam ()
{
- slope = 0;
- left_pos = 0.0;
+ slope_f_ = 0;
+ solved_slope_f_ = 0;
+ left_y_ = 0;
+ damping_i_ = 1;
+ quantisation_ = NORMAL;
+ multiple_i_ = 0;
}
void
-Beam::add (Stem*s)
+Beam::add_stem (Stem*s)
{
- stems.push (s);
+ stems_.push (s);
s->add_dependency (this);
s->beam_l_ = this;
}
Molecule*
-Beam::brew_molecule_p() const
+Beam::brew_molecule_p () const
{
Molecule *mol_p = new Molecule;
- // huh? inter-what
- // Real inter_f = paper()->interbeam_f ();
- Real inter_f = paper()->internote_f ();
- Real x0 = stems[0]->hpos_f();
- for (int j=0; j <stems.size(); j++)
+
+ Real internote_f = paper ()->internote_f ();
+
+ 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;
+ 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->hpos_f()-x0;
- sb.translate (Offset (x, (x * slope + left_pos)* inter_f));
- mol_p->add (sb);
+ Real x = i->hpos_f ()-x0;
+ sb.translate (Offset (x, (x * slope_f_ + left_y_) * internote_f));
+ mol_p->add_molecule (sb);
}
- mol_p->translate_axis (x0 - spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), X_AXIS);
+ mol_p->translate_axis (x0
+ - spanned_drul_[LEFT]->absolute_coordinate (X_AXIS), X_AXIS);
+
return mol_p;
}
Offset
-Beam::center() const
+Beam::center () const
{
- Real w=(paper()->note_width () + width ().length ())/2.0;
- return Offset (w, (left_pos + w* slope)*paper()->internote_f ());
+ Real w= (paper ()->note_width () + width ().length ())/2.0;
+ return Offset (w, (left_y_ + w* slope_f_)*paper ()->internote_f ());
}
void
-Beam::do_pre_processing()
+Beam::do_pre_processing ()
{
if (!dir_)
- set_default_dir();
+ set_default_dir ();
}
void
-Beam::do_print() const
+Beam::do_print () const
{
#ifndef NPRINT
- DOUT << "slope " <<slope << "left ypos " << left_pos;
- Spanner::do_print();
+ DOUT << "slope_f_ " << slope_f_ << "left ypos " << left_y_;
+ Spanner::do_print ();
#endif
}
void
-Beam::do_post_processing()
+Beam::do_post_processing ()
{
- if (stems.size() < 2)
+ if (stems_.size () < 2)
{
- warning (_("Beam with less than 2 stems"));
+ warning (_ ("beam with less than two stems"));
transparent_b_ = true;
return ;
}
- solve_slope();
- set_stemlens();
+ solve_slope ();
+ set_stemlens ();
}
void
-Beam::do_substitute_dependent (Score_elem*o,Score_elem*n)
+Beam::do_substitute_dependent (Score_element*o,Score_element*n)
{
- if (o->is_type_b (Stem::static_name()))
- stems.substitute ((Stem*)o->item(), n?(Stem*) n->item ():0);
+ if (o->is_type_b (Stem::static_name ()))
+ stems_.substitute ((Stem*)dynamic_cast <Item *> (o), n? (Stem*) dynamic_cast <Item *> (n):0);
}
Interval
-Beam::do_width() const
+Beam::do_width () const
{
- return Interval (stems[0]->hpos_f(),
- stems.top()->hpos_f ());
+ return Interval (stems_[0]->hpos_f (),
+ stems_.top ()->hpos_f ());
}
void
-Beam::set_default_dir()
+Beam::set_default_dir ()
{
- int up = 0, down = 0;
- int up_count = 0, down_count = 0;
-
- for (int i=0; i <stems.size(); i++)
- {
- Stem *sl = stems[i];
- int cur_down = sl->get_center_distance_from_top();
- int cur_up = sl->get_center_distance_from_bottom();
- if (cur_down)
- {
- down += cur_down;
- down_count++;
- }
- if (cur_up)
+ Drul_array<int> total;
+ total[UP] = total[DOWN] = 0;
+ Drul_array<int> count;
+ count[UP] = count[DOWN] = 0;
+ Direction d = DOWN;
+
+ for (int i=0; i <stems_.size (); i++)
+ do {
+ Stem *s = stems_[i];
+ int current = s->dir_
+ ? (1 + d * s->dir_)/2
+ : s->get_center_distance ((Direction)-d);
+
+ if (current)
{
- up += cur_up;
- up_count++;
+ total[d] += current;
+ count[d] ++;
}
- }
- if (!down)
- down_count = 1;
- if (!up)
- up_count = 1;
- // the following relation is equal to
- // up / up_count > down / down_count
- dir_ = (up * down_count > down * up_count) ? UP : DOWN;
+ } while (flip(&d) != DOWN);
+
+ do {
+ if (!total[d])
+ count[d] = 1;
+ } while (flip(&d) != DOWN);
+
+ /*
+ [Ross] states that the majority of the notes dictates the
+ direction (and not the mean of "center distance")
+
+ But is that because it really looks better, or because he
+ wants to provide some real simple hands-on rules.
+
+ We have our doubts, so we simply provide all sensible alternatives.
+ */
- for (int i=0; i <stems.size(); i++)
+ Dir_algorithm a = (Dir_algorithm)rint(paper ()->get_var ("beam_dir_algorithm"));
+ switch (a)
{
- Stem *sl = stems[i];
- sl->dir_ = dir_;
+ case MAJORITY:
+ dir_ = (count[UP] > count[DOWN]) ? UP : DOWN;
+ break;
+ case MEAN:
+ // mean centre distance
+ dir_ = (total[UP] > total[DOWN]) ? UP : DOWN;
+ break;
+ default:
+ case MEDIAN:
+ // median centre distance
+ if (!count[UP])
+ dir_ = DOWN;
+ else if (!count[DOWN])
+ dir_ = UP;
+ else
+ dir_ = (total[UP] / count[UP] > total[DOWN] / count[DOWN]) ? UP : DOWN;
+ break;
+ }
+
+ for (int i=0; i <stems_.size (); i++)
+ {
+ Stem *s = stems_[i];
+ s->beam_dir_ = dir_;
+ if (!s->dir_forced_b_)
+ s->dir_ = dir_;
}
}
/*
- should use minimum energy formulation (cf linespacing)
-
- [todo]
- the y of the (start) of the beam should be quantisized,
- so that no stafflines appear just in between two beam-flags
-
-*/
+ See Documentation/tex/fonts.doc
+ */
void
-Beam::solve_slope()
+Beam::solve_slope ()
{
+ /*
+ should use minimum energy formulation (cf linespacing)
+ */
+
+ assert (multiple_i_);
Array<Stem_info> sinfo;
- for (int j=0; j <stems.size(); j++)
+ DOUT << "Beam::solve_slope: \n";
+ for (int j=0; j <stems_.size (); j++)
{
- Stem *i = stems[j];
+ Stem *i = stems_[j];
- i->set_default_extents();
- if (i->invisible_b())
+ i->mult_i_ = multiple_i_;
+ i->set_default_extents ();
+ if (i->invisible_b ())
continue;
Stem_info info (i);
sinfo.push (info);
}
- if (! sinfo.size())
- slope = left_pos = 0;
- else if (sinfo.size() == 1)
+ if (! sinfo.size ())
+ slope_f_ = left_y_ = 0;
+ else if (sinfo.size () == 1)
{
- slope = 0;
- left_pos = sinfo[0].idealy_f_;
+ slope_f_ = 0;
+ left_y_ = sinfo[0].idealy_f_;
}
else
{
-
- Real leftx = sinfo[0].x;
+ Real leftx = sinfo[0].x_;
Least_squares l;
- for (int i=0; i < sinfo.size(); i++)
+ for (int i=0; i < sinfo.size (); i++)
{
- sinfo[i].x -= leftx;
- l.input.push (Offset (sinfo[i].x, sinfo[i].idealy_f_));
+ sinfo[i].x_ -= leftx;
+ l.input.push (Offset (sinfo[i].x_, sinfo[i].idealy_f_));
}
- l.minimise (slope, left_pos);
+ l.minimise (slope_f_, left_y_);
+
+ }
+
+ solved_slope_f_ = dir_ * slope_f_;
+
+ /*
+ This neat trick is by Werner Lemberg, damped = tanh (slope_f_) corresponds
+ with some tables in [Wanske]
+ */
+ if (damping_i_)
+ slope_f_ = 0.6 * tanh (slope_f_) / damping_i_;
+
+ /*
+ [TODO]
+ think
+
+ dropping lq for stemlengths solves [d d d] [d g d] "bug..."
+
+ but may be a bit too crude, and result in lots of
+ too high beams...
+
+ perhaps only if slope = 0 ?
+ */
+
+// left_y_ = sinfo[0].minyf_;
+
+ if (sinfo.size () >= 1)
+ {
+ Real staffline_f = paper ()->rule_thickness ();
+ Real epsilon_f = staffline_f / 8;
+ if (abs (slope_f_) < epsilon_f)
+ left_y_ = (sinfo[0].idealy_f_ + sinfo.top ().idealy_f_) / 2;
+ else
+ /*
+ symmetrical, but results often in having stemlength = minimal
+
+ left_y_ = sinfo[0].dir_ == dir_ ? sinfo[0].miny_f_ : sinfo[0].maxy_f_;
+
+ what about
+ */
+ {
+ Real dx = stems_.top ()->hpos_f () - stems_[0]->hpos_f ();
+ if (sinfo[0].dir_ == sinfo.top ().dir_)
+ left_y_ = sinfo[0].idealy_f_ >? sinfo.top ().idealy_f_ - slope_f_ * dx;
+ // knee
+ else
+ left_y_ = sinfo[0].idealy_f_;
+ }
}
+ // uh?
Real dy = 0.0;
- for (int i=0; i < sinfo.size(); i++)
+ for (int i=0; i < sinfo.size (); i++)
{
- Real y = sinfo[i].x * slope + left_pos;
+ Real y = sinfo[i].x_ * slope_f_ + left_y_;
Real my = sinfo[i].miny_f_;
if (my - y > dy)
dy = my -y;
}
- left_pos += dy;
- left_pos *= dir_;
+ left_y_ += dy;
+ left_y_ *= dir_;
+ slope_f_ *= dir_;
- slope *= dir_;
+ quantise_dy ();
+}
+void
+Beam::quantise_dy ()
+{
/*
- This neat trick is by Werner Lemberg, damped = tanh (slope) corresponds
- with some tables in [Wanske]
+ [Ross] (simplification of)
+ Try to set slope_f_ complying with y-span of:
+ - zero
+ - beam_f / 2 + staffline_f / 2
+ - beam_f + staffline_f
+ + n * interline
*/
- slope = 0.6 * tanh (slope);
- // ugh
- Real sl = slope*paper()->internote_f ();
- paper()->lookup_l ()->beam (sl, 20 PT);
- slope = sl /paper()->internote_f ();
+ if (quantisation_ <= NONE)
+ return;
+
+ Real interline_f = paper ()->interline_f ();
+ Real internote_f = interline_f / 2;
+ Real staffline_f = paper ()->rule_thickness ();
+ Real beam_f = paper ()->beam_thickness_f ();
+
+ Real dx_f = stems_.top ()->hpos_f () - stems_[0]->hpos_f ();
+
+ // dim(y) = internote; so slope = (y/internote)/x
+ Real dy_f = dx_f * abs (slope_f_ * internote_f);
+
+ Real quanty_f = 0.0;
+
+ /* UGR. ICE in 2.8.1; bugreport filed. */
+ Array<Real> allowed_fraction (3);
+ allowed_fraction[0] = 0;
+ allowed_fraction[1] = (beam_f / 2 + staffline_f / 2);
+ allowed_fraction[2] = (beam_f + staffline_f);
+
+
+ Interval iv = quantise_iv (allowed_fraction, interline_f, dy_f);
+ quanty_f = (dy_f - iv.min () <= iv.max () - dy_f)
+ ? iv.min ()
+ : iv.max ();
+
+
+ slope_f_ = (quanty_f / dx_f) / internote_f * sign (slope_f_);
}
+static int test_pos = 0;
+
+
+/*
+
+ Prevent interference from stafflines and beams. See Documentation/tex/fonts.doc
+
+ */
void
-Beam::set_stemlens()
+Beam::quantise_left_y (bool extend_b)
{
- Real x0 = stems[0]->hpos_f();
- for (int j=0; j <stems.size(); j++)
+ /*
+ we only need to quantise the start of the beam as dy is quantised too
+ if extend_b then stems must *not* get shorter
+ */
+
+ if (quantisation_ <= NONE)
+ return;
+
+ /*
+ ----------------------------------------------------------
+ ########
+ ########
+ ########
+ --------------########------------------------------------
+ ########
+
+ hang straddle sit inter hang
+ */
+
+ Real interline_f = paper ()->interline_f ();
+ Real internote_f = paper ()->internote_f ();
+ Real staffline_f = paper ()->rule_thickness ();
+ Real beam_f = paper ()->beam_thickness_f ();
+
+ /*
+ [TODO]
+ it would be nice to have all allowed positions in a runtime matrix:
+ (multiplicity, minimum_beam_dy, maximum_beam_dy)
+ */
+
+ Real straddle = 0;
+ Real sit = beam_f / 2 - staffline_f / 2;
+ Real inter = interline_f / 2;
+ Real hang = interline_f - beam_f / 2 + staffline_f / 2;
+
+ /*
+ Put all allowed positions into an array.
+ Whether a position is allowed or not depends on
+ strictness of quantisation, multiplicity and direction.
+
+ For simplicity, we'll assume dir = UP and correct if
+ dir = DOWN afterwards.
+ */
+
+ // dim(left_y_) = internote
+ Real dy_f = dir_ * left_y_ * internote_f;
+
+ Real beamdx_f = stems_.top ()->hpos_f () - stems_[0]->hpos_f ();
+ Real beamdy_f = beamdx_f * slope_f_ * internote_f;
+
+ Array<Real> allowed_position;
+ if (quantisation_ != TEST)
+ {
+ if (quantisation_ <= NORMAL)
+ {
+ if ((multiple_i_ <= 2) || (abs (beamdy_f) >= staffline_f / 2))
+ allowed_position.push (straddle);
+ if ((multiple_i_ <= 1) || (abs (beamdy_f) >= staffline_f / 2))
+ allowed_position.push (sit);
+ allowed_position.push (hang);
+ }
+ else
+ // TODO: check and fix TRADITIONAL
+ {
+ if ((multiple_i_ <= 2) || (abs (beamdy_f) >= staffline_f / 2))
+ allowed_position.push (straddle);
+ if ((multiple_i_ <= 1) && (beamdy_f <= staffline_f / 2))
+ allowed_position.push (sit);
+ if (beamdy_f >= -staffline_f / 2)
+ allowed_position.push (hang);
+ }
+ }
+ else
{
- Stem *s = stems[j];
+ if (test_pos == 0)
+ {
+ allowed_position.push (hang);
+ cout << "hang" << hang << endl;
+ }
+ else if (test_pos==1)
+ {
+ allowed_position.push (straddle);
+ cout << "straddle" << straddle << endl;
+ }
+ else if (test_pos==2)
+ {
+ allowed_position.push (sit);
+ cout << "sit" << sit << endl;
+ }
+ else if (test_pos==3)
+ {
+ allowed_position.push (inter);
+ cout << "inter" << inter << endl;
+ }
+ }
+
+#if 0
+ // this currently never happens
+ Real q = (dy_f / interline_f - dy_i) * interline_f;
+ if ((quantisation_ < NORMAL) && (q < interline_f / 3 - beam_f / 2))
+ allowed_position.push (inter);
+#endif
- Real x = s->hpos_f()-x0;
- s->set_stemend (left_pos + slope * x);
+ Interval iv = quantise_iv (allowed_position, interline_f, dy_f);
+
+ Real quanty_f = dy_f - iv.min () <= iv.max () - dy_f ? iv.min () : iv.max ();
+ if (extend_b)
+ quanty_f = iv.max ();
+
+ // dim(left_y_) = internote
+ left_y_ = dir_ * quanty_f / internote_f;
+}
+
+void
+Beam::set_stemlens ()
+{
+ Real staffline_f = paper ()->rule_thickness ();
+ Real interbeam_f = paper ()->interbeam_f (multiple_i_);
+ Real internote_f = paper ()->internote_f ();
+ Real beam_f = paper ()->beam_thickness_f ();
+
+ // enge floots
+ Real epsilon_f = staffline_f / 8;
+
+ /*
+
+ Damped and quantised slopes, esp. in monotone scales such as
+
+ [c d e f g a b c]
+
+ will soon produce the minimal stem-length for one of the extreme
+ stems, which is wrong (and ugly). The minimum stemlength should
+ be kept rather small, in order to handle extreme beaming, such as
+
+ [c c' 'c] %assuming no knee
+
+ correctly.
+ To avoid these short stems for normal cases, we'll correct for
+ the loss in slope, if necessary.
+
+ [TODO]
+ ugh, another hack. who's next?
+ Writing this all down, i realise (at last) that the Right Thing to
+ do is to assign uglyness to slope and stem-lengths and then minimise
+ the total uglyness of a beam.
+ Steep slopes are ugly, shortened stems are ugly, lengthened stems
+ are ugly.
+ How to do this?
+
+ */
+
+ Real dx_f = stems_.top ()->hpos_f () - stems_[0]->hpos_f ();
+ Real damp_correct_f = paper ()->get_var ("beam_slope_damp_correct_factor");
+ Real damped_slope_dy_f = (solved_slope_f_ - slope_f_) * dx_f
+ * sign (slope_f_);
+ damped_slope_dy_f *= damp_correct_f;
+ if (damped_slope_dy_f <= epsilon_f)
+ damped_slope_dy_f = 0;
+
+ DOUT << "Beam::set_stemlens: \n";
+ Real x0 = stems_[0]->hpos_f ();
+ Real dy_f = 0;
+ // urg
+ for (int jj = 0; jj < 10; jj++)
+ {
+ left_y_ += dy_f * dir_;
+ quantise_left_y (dy_f);
+ dy_f = 0;
+ for (int i=0; i < stems_.size (); i++)
+ {
+ Stem *s = stems_[i];
+ if (s->transparent_b_)
+ continue;
+
+ Real x = s->hpos_f () - x0;
+ // urg move this to stem-info
+ Real sy = left_y_ + slope_f_ * x;
+ if (dir_ != s->dir_)
+ sy -= dir_ * (beam_f / 2
+ + (s->mult_i_ - 1) * interbeam_f) / internote_f;
+ s->set_stemend (sy);
+ Real y = s->stem_end_f () * dir_;
+ Stem_info info (s);
+ if (y > info.maxy_f_)
+ dy_f = dy_f <? info.maxy_f_ - y;
+ if (y < info.miny_f_)
+ {
+ // when all too short, normal stems win..
+ if (dy_f < -epsilon_f)
+ warning (_ ("weird beam shift, check your knees"));
+ dy_f = dy_f >? info.miny_f_ - y;
+ }
+ }
+ if (damped_slope_dy_f && (dy_f >= 0))
+ dy_f += damped_slope_dy_f;
+ damped_slope_dy_f = 0;
+ if (abs (dy_f) <= epsilon_f)
+ {
+ DOUT << "Beam::set_stemlens: " << jj << " iterations\n";
+ break;
+ }
}
+
+ test_pos++;
+ test_pos %= 4;
}
+/*
+ FIXME
+ ugh. this is broken and should be rewritten.
+ - [c8. c32 c32]
+ */
void
Beam::set_grouping (Rhythmic_grouping def, Rhythmic_grouping cur)
{
- def.OK();
- cur.OK();
- assert (cur.children.size() == stems.size ());
+ def.OK ();
+ cur.OK ();
+ assert (cur.children.size () == stems_.size ());
cur.split (def);
Array<int> b;
{
Array<int> flags;
- for (int j=0; j <stems.size(); j++)
+ for (int j=0; j <stems_.size (); j++)
{
- Stem *s = stems[j];
+ Stem *s = stems_[j];
int f = s->flag_i_ - 2;
assert (f>0);
b= cur.generate_beams (flags, fi);
b.insert (0,0);
b.push (0);
- assert (stems.size() == b.size ()/2);
+ assert (stems_.size () == b.size ()/2);
}
- for (int j=0, i=0; i < b.size() && j <stems.size (); i+= 2, j++)
+ for (int j=0, i=0; i < b.size () && j <stems_.size (); i+= 2, j++)
{
- Stem *s = stems[j];
+ Stem *s = stems_[j];
s->beams_left_i_ = b[i];
s->beams_right_i_ = b[i+1];
+ multiple_i_ = multiple_i_ >? (b[i] >? b[i+1]);
}
}
Molecule
Beam::stem_beams (Stem *here, Stem *next, Stem *prev) const
{
- assert (!next || next->hpos_f() > here->hpos_f ());
- assert (!prev || prev->hpos_f() < here->hpos_f ());
- // Real dy=paper()->internote_f ()*2;
- Real dy = paper()->interbeam_f ();
- Real stemdx = paper()->rule_thickness ();
- Real sl = slope*paper()->internote_f ();
- paper()->lookup_l ()->beam (sl, 20 PT);
+ assert (!next || next->hpos_f () > here->hpos_f ());
+ assert (!prev || prev->hpos_f () < here->hpos_f ());
+
+ Real staffline_f = paper ()->rule_thickness ();
+ Real interbeam_f = paper ()->interbeam_f (multiple_i_);
+ Real internote_f = paper ()->internote_f ();
+ Real beam_f = paper ()->beam_thickness_f ();
+
+ Real dy = interbeam_f;
+ Real stemdx = staffline_f;
+ Real sl = slope_f_* internote_f;
+ lookup_l ()->beam (sl, 20 PT, 1 PT);
Molecule leftbeams;
Molecule rightbeams;
{
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;
+ /*
+ Half beam should be one note-width,
+ but let's make sure two half-beams never touch
+ */
+ Real w = here->hpos_f () - prev->hpos_f ();
+ w = w/2 <? paper ()->note_width ();
Atom a;
if (lhalfs) // generates warnings if not
- a = paper()->lookup_l ()->beam (sl, w);
+ a = lookup_l ()->beam (sl, w, beam_f);
a.translate (Offset (-w, -w * sl));
for (int j = 0; j < lhalfs; j++)
{
Atom b (a);
b.translate_axis (-dir_ * dy * (lwholebeams+j), Y_AXIS);
- leftbeams.add (b);
+ leftbeams.add_atom (b);
}
}
int rhalfs = here->beams_right_i_ - next->beams_left_i_;
int rwholebeams = here->beams_right_i_ <? next->beams_left_i_;
- Real w = next->hpos_f() - here->hpos_f ();
- Atom a = paper()->lookup_l ()->beam (sl, w + stemdx);
-
+ Real w = next->hpos_f () - here->hpos_f ();
+ Atom a = lookup_l ()->beam (sl, w + stemdx, beam_f);
+ a.translate_axis( - stemdx/2, X_AXIS);
int j = 0;
Real gap_f = 0;
if (here->beam_gap_i_)
{
Atom b (a);
b.translate_axis (-dir_ * dy * j, Y_AXIS);
- rightbeams.add (b);
+ rightbeams.add_atom (b);
}
// TODO: notehead widths differ for different types
- gap_f = paper()->note_width () / 2;
+ gap_f = paper ()->note_width () / 2;
w -= 2 * gap_f;
- a = paper()->lookup_l ()->beam (sl, w + stemdx);
+ a = lookup_l ()->beam (sl, w + stemdx, beam_f);
}
for (; j < rwholebeams; j++)
{
Atom b (a);
b.translate (Offset (gap_f, -dir_ * dy * j));
- rightbeams.add (b);
+ rightbeams.add_atom (b);
}
- w /= 4;
+ w = w/2 <? paper ()->note_width ();
if (rhalfs)
- a = paper()->lookup_l ()->beam (sl, w);
+ a = lookup_l ()->beam (sl, w, beam_f);
for (; j < rwholebeams + rhalfs; j++)
{
Atom b (a);
b.translate_axis (-dir_ * dy * j, Y_AXIS);
- rightbeams.add (b);
+ rightbeams.add_atom (b);
}
}
- leftbeams.add (rightbeams);
+ leftbeams.add_molecule (rightbeams);
+
+ /*
+ Does beam quanting think of the asymetry of beams?
+ Refpoint is on bottom of symbol. (FIXTHAT) --hwn.
+ */
return leftbeams;
}
+
projects / lilypond.git / blobdiff