source file of the GNU LilyPond music typesetter
- (c) 1997--1998, 1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
/*
[TODO]
- * centre beam symbol
+ * center beam symbol
* less hairy code
* redo grouping
- */
+
+TODO:
+
+The relationship Stem <-> Beam is way too hairy. Let's figure who
+needs what, and what information should be available when.
+
+ */
#include <math.h>
-#include "p-col.hh"
-#include "array.hh"
+#include "chord-tremolo.hh"
+#include "beaming.hh"
#include "proto.hh"
#include "dimensions.hh"
#include "beam.hh"
-#include "abbreviation-beam.hh"
#include "misc.hh"
#include "debug.hh"
-#include "atom.hh"
#include "molecule.hh"
#include "leastsquares.hh"
#include "stem.hh"
#include "paper-def.hh"
#include "lookup.hh"
-#include "grouping.hh"
Beam::Beam ()
{
slope_f_ = 0;
left_y_ = 0;
- damping_i_ = 1;
quantisation_ = NORMAL;
multiple_i_ = 0;
}
void
Beam::add_stem (Stem*s)
{
+#if 0
+ /*
+ should figure out why this didn't work.
+
+ --hwn.
+ */
+ if (!stems_.size ())
+ {
+ set_parent (s, Y_AXIS);
+ }
+#endif
stems_.push (s);
s->add_dependency (this);
+
+ assert (!s->beam_l_);
s->beam_l_ = this;
if (!spanned_drul_[LEFT])
set_bounds (RIGHT,s);
}
+Stem_info
+Beam::get_stem_info (Stem *s)
+{
+ Stem_info i;
+ for (int i=0; i < sinfo_.size (); i++)
+ {
+ if (sinfo_[i].stem_l_ == s)
+ return sinfo_[i];
+ }
+ assert (false);
+ return i;
+}
+
Molecule*
Beam::do_brew_molecule_p () const
{
Molecule *mol_p = new Molecule;
- Real internote_f = paper ()->internote_f ();
-
+ if (!sinfo_.size ())
+ return mol_p;
+
Real x0 = stems_[0]->hpos_f ();
for (int j=0; j <stems_.size (); j++)
{
Molecule sb = stem_beams (i, next, prev);
Real x = i->hpos_f ()-x0;
- sb.translate (Offset (x, (x * slope_f_ + left_y_) * internote_f));
+ sb.translate (Offset (x, (x * slope_f_ + left_y_) *
+ i->staff_line_leading_f ()/2 ));
mol_p->add_molecule (sb);
}
mol_p->translate_axis (x0
- - spanned_drul_[LEFT]->absolute_coordinate (X_AXIS), X_AXIS);
-
- // correct if last note (and therefore reference point of beam)
- // is on different staff
- mol_p->translate_axis (- sinfo_.top ().interstaff_f_ * internote_f, Y_AXIS);
+ - spanned_drul_[LEFT]->relative_coordinate (0, X_AXIS), X_AXIS);
return mol_p;
}
Offset
Beam::center () const
{
- Real w= (paper ()->note_width () + extent (X_AXIS).length ())/2.0;
- return Offset (w, (left_y_ + w* slope_f_)*paper ()->internote_f ());
+ Stem_info si = sinfo_[0];
+
+ Real w= (si.stem_l_->note_delta_f () + extent (X_AXIS).length ())/2.0;
+ return Offset (w, ( w* slope_f_) *
+ si.stem_l_->staff_line_leading_f ()/2);
}
void
Beam::do_pre_processing ()
{
if (!dir_)
- set_default_dir ();
+ dir_ = get_default_dir ();
+
+
+ set_direction (dir_);
}
void
if (stems_.size () < 2)
{
warning (_ ("beam with less than two stems"));
- transparent_b_ = true;
+ set_elt_property (transparent_scm_sym, SCM_BOOL_T);
return ;
}
calculate_slope ();
}
void
-Beam::do_substitute_dependent (Score_element*o,Score_element*n)
+Beam::do_substitute_element_pointer (Score_element*o,Score_element*n)
{
if (Stem * os = dynamic_cast<Stem*> (o))
stems_.substitute (os,
stems_.top ()->hpos_f ());
}
-void
-Beam::set_default_dir ()
+Direction
+Beam::get_default_dir () const
{
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];
wants to provide some real simple hands-on rules.
We have our doubts, so we simply provide all sensible alternatives.
+
+ If dir is not determined: up (see stem::get_default_dir ())
*/
- Dir_algorithm a = (Dir_algorithm)rint(paper ()->get_var ("beam_dir_algorithm"));
+ Direction beam_dir;
+ Direction neutral_dir = (Direction)(int)paper_l ()->get_var ("stem_default_neutral_direction");
+
+ Dir_algorithm a = (Dir_algorithm)rint(paper_l ()->get_var ("beam_dir_algorithm"));
switch (a)
{
case MAJORITY:
- dir_ = (count[UP] > count[DOWN]) ? UP : DOWN;
+ beam_dir = (count[UP] == count[DOWN]) ? neutral_dir
+ : (count[UP] > count[DOWN]) ? UP : DOWN;
break;
case MEAN:
- // mean centre distance
- dir_ = (total[UP] > total[DOWN]) ? UP : DOWN;
+ // mean center distance
+ beam_dir = (total[UP] == total[DOWN]) ? neutral_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;
+ // median center distance
+ if (!count[DOWN] || !count[UP])
+ {
+ beam_dir = (count[UP] == count[DOWN]) ? neutral_dir
+ : (count[UP] > count[DOWN]) ? UP : DOWN;
+ }
else
- dir_ = (total[UP] / count[UP] > total[DOWN] / count[DOWN]) ? UP : DOWN;
+ {
+ beam_dir = (total[UP] / count[UP] == total[DOWN] / count[DOWN])
+ ? neutral_dir
+ : (total[UP] / count[UP] > total[DOWN] / count[DOWN]) ? UP : DOWN;
+ }
break;
}
+ return beam_dir;
+}
+void
+Beam::set_direction (Direction d)
+{
+ dir_ = d;
for (int i=0; i <stems_.size (); i++)
{
Stem *s = stems_[i];
- s->beam_dir_ = dir_;
- if (!s->dir_forced_b_)
- s->dir_ = dir_;
+ s->set_elt_property (beam_dir_scm_sym, gh_int2scm (d));
+
+ SCM force = s->remove_elt_property (dir_forced_scm_sym);
+ if (force == SCM_BOOL_F)
+ s->dir_ = d;
}
}
void
Beam::solve_slope ()
{
- /*
- should use minimum energy formulation (cf linespacing)
- */
assert (sinfo_.size () > 1);
DOUT << "Beam::solve_slope: \n";
l.minimise (slope_f_, left_y_);
}
+/*
+ ugh. Naming: this doesn't check, but sets as well.
+ */
+
Real
Beam::check_stemlengths_f (bool set_b)
{
- Real interbeam_f = paper ()->interbeam_f (multiple_i_);
- Real internote_f = paper ()->internote_f ();
- Real beam_f = paper ()->beam_thickness_f ();
- Real staffline_f = paper ()->rule_thickness ();
+ Real interbeam_f = paper_l ()->interbeam_f (multiple_i_);
+
+ Real beam_f = paper_l ()->beam_thickness_f ();
+ Real staffline_f = paper_l ()->rule_thickness ();
Real epsilon_f = staffline_f / 8;
Real dy_f = 0.0;
for (int i=0; i < sinfo_.size (); i++)
// correct for knee
if (dir_ != sinfo_[i].dir_)
{
+ Real internote_f = sinfo_[i].stem_l_->staff_line_leading_f ()/2;
y -= dir_ * (beam_f / 2
+ (sinfo_[i].mult_i_ - 1) * interbeam_f) / internote_f;
- if (!i && sinfo_[i].stem_l_->staff_sym_l_ !=
- sinfo_.top ().stem_l_->staff_sym_l_)
+ if (!i && sinfo_[i].stem_l_->staff_symbol_l () !=
+ sinfo_.top ().stem_l_->staff_symbol_l ())
y += dir_ * (multiple_i_ - (sinfo_[i].stem_l_->flag_i_ - 2) >? 0)
* interbeam_f / internote_f;
}
{
// when all too short, normal stems win..
if (dy_f < -epsilon_f)
- warning (_ ("weird beam shift, check your knees"));
- dy_f = dy_f >? sinfo_[i].miny_f_ - y;
+ warning (_ ("weird beam vertical offset"));
+ dy_f = dy_f >? sinfo_[i].miny_f_ - y;
}
}
return dy_f;
void
Beam::set_steminfo ()
{
+ if(!stems_.size ())
+ return;
+
assert (multiple_i_);
int total_count_i = 0;
int forced_count_i = 0;
for (int i=0; i < stems_.size (); i++)
{
Stem *s = stems_[i];
- s->mult_i_ = multiple_i_;
+
s->set_default_extents ();
if (s->invisible_b ())
continue;
total_count_i++;
}
- Real internote_f = paper ()->internote_f ();
- int stem_max = (int)rint(paper ()->get_var ("stem_max"));
- Real shorten_f = paper ()->get_var (String ("forced_stem_shorten"
- + to_str (multiple_i_ <? stem_max)))
- / internote_f;
+ bool grace_b = get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+ String type_str = grace_b ? "grace_" : "";
+ int stem_max = (int)rint(paper_l ()->get_var ("stem_max"));
+ Real shorten_f = paper_l ()->get_var (type_str + "forced_stem_shorten"
+ + to_str (multiple_i_ <? stem_max));
Real leftx = 0;
for (int i=0; i < stems_.size (); i++)
{
Stem *s = stems_[i];
- if (s->invisible_b ())
- continue;
+ /*
+ Chord tremolo needs to beam over invisible stems of wholes
+ */
+ if (!dynamic_cast<Chord_tremolo*> (this))
+ {
+ if (s->invisible_b ())
+ continue;
+ }
- Stem_info info (s);
+ Stem_info info (s, multiple_i_);
if (leftx == 0)
leftx = info.x_;
info.x_ -= leftx;
Real dx_f = stems_.top ()->hpos_f () - stems_[0]->hpos_f ();
// urg, these y internote-y-dimensions
- Real internote_f = paper ()->internote_f ();
- Real lengthened = paper ()->get_var ("beam_lengthened") / internote_f;
- Real steep = paper ()->get_var ("beam_steep_slope") / internote_f;
+ Real internote_f = stems_[0]->staff_line_leading_f ()/2;
+
+ Real lengthened = paper_l ()->get_var ("beam_lengthened") / internote_f;
+ Real steep = paper_l ()->get_var ("beam_steep_slope") / internote_f;
if (((left_y_ - sinfo_[0].idealy_f_ > lengthened)
&& (slope_f_ > steep))
|| ((left_y_ + slope_f_ * dx_f - sinfo_.top ().idealy_f_ > lengthened)
damped = tanh (slope_f_)
corresponds with some tables in [Wanske]
*/
- if (damping_i_)
- slope_f_ = 0.6 * tanh (slope_f_) / damping_i_;
+ SCM damp = remove_elt_property (damping_scm_sym);
+ int damping = 1; // ugh.
+ if (damp!= SCM_BOOL_F)
+ damping = gh_int2scm (SCM_CDR(damp));
+
+ if (damping)
+ slope_f_ = 0.6 * tanh (slope_f_) / damping;
quantise_dy ();
if (quantisation_ <= NONE)
return;
- Real interline_f = paper ()->interline_f ();
+ Real interline_f = stems_[0]->staff_line_leading_f ();
Real internote_f = interline_f / 2;
- Real staffline_f = paper ()->rule_thickness ();
- Real beam_f = paper ()->beam_thickness_f ();
+ Real staffline_f = paper_l ()->rule_thickness ();
+ Real beam_f = paper_l ()->beam_thickness_f ();
Real dx_f = stems_.top ()->hpos_f () - stems_[0]->hpos_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 ();
+ quanty_f = (dy_f - iv[SMALLER] <= iv[BIGGER] - dy_f)
+ ? iv[SMALLER]
+ : iv[BIGGER];
slope_f_ = (quanty_f / dx_f) / internote_f * sign (slope_f_);
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 ();
+ Real space = stems_[0]->staff_line_leading_f ();
+ Real internote_f = space /2;
+ Real staffline_f = paper_l ()->rule_thickness ();
+ Real beam_f = paper_l ()->beam_thickness_f ();
/*
[TODO]
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;
+ Real inter = space / 2;
+ Real hang = space - beam_f / 2 + staffline_f / 2;
/*
Put all allowed positions into an array.
}
}
- Interval iv = quantise_iv (allowed_position, interline_f, dy_f);
+ Interval iv = quantise_iv (allowed_position, space, dy_f);
- Real quanty_f = dy_f - iv.min () <= iv.max () - dy_f ? iv.min () : iv.max ();
+ Real quanty_f = dy_f - iv[SMALLER] <= iv[BIGGER] - dy_f ? iv[SMALLER] : iv[BIGGER];
if (extend_b)
- quanty_f = iv.max ();
+ quanty_f = iv[BIGGER];
// dim(left_y_) = internote
left_y_ = dir_ * quanty_f / internote_f;
void
Beam::set_stemlens ()
{
- Real staffline_f = paper ()->rule_thickness ();
+ Real staffline_f = paper_l ()->rule_thickness ();
// enge floots
Real epsilon_f = staffline_f / 8;
- DOUT << "Beam::set_stemlens: \n";
+
+ // je bent zelf eng --hwn.
Real dy_f = check_stemlengths_f (false);
for (int i = 0; i < 2; i++)
{
dy_f = check_stemlengths_f (true);
if (abs (dy_f) <= epsilon_f)
{
- DOUT << "Beam::set_stemlens: " << i << " iterations\n";
break;
}
}
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)
+Beam::set_beaming (Beaming_info_list *beaming)
+{
+ Direction d = LEFT;
+ for (int i=0; i < stems_.size (); i++)
+ {
+ do
+ {
+ if (stems_[i]->beams_i_drul_[d] < 0)
+ stems_[i]->beams_i_drul_[d] = beaming->infos_.elem (i).beams_i_drul_[d];
+ }
+ while (flip (&d) != LEFT);
+ }
+}
+
+
+void
+Beam::do_add_processing ()
{
- 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++)
- {
- Stem *s = stems_[j];
-
- int f = s->flag_i_ - 2;
- assert (f>0);
- flags.push (f);
- }
- int fi =0;
- b= cur.generate_beams (flags, fi);
- b.insert (0,0);
- b.push (0);
- assert (stems_.size () == b.size ()/2);
- }
-
- for (int j=0, i=0; i < b.size () && j <stems_.size (); j++)
+ for (int i=0; i < stems_.size () ; i++)
{
- Stem *s = stems_[j];
Direction d = LEFT;
do {
- if (s->beams_i_drul_[d] < 0)
- s->beams_i_drul_[d] = b[i];
-
- multiple_i_ = multiple_i_ >? s->beams_i_drul_[d];
- i++;
+ multiple_i_ = multiple_i_ >? stems_[i]->beams_i_drul_[d];
} while ((flip (&d)) != LEFT);
}
+
+ if (stems_.size ())
+ {
+ stems_[0]->beams_i_drul_[LEFT] =0;
+ stems_.top()->beams_i_drul_[RIGHT] =0;
+ }
}
+
+
/*
beams to go with one stem.
*/
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 ());
+ if ((next && !(next->hpos_f () > here->hpos_f ())) ||
+ (prev && !(prev->hpos_f () < here->hpos_f ())))
+ programming_error ("Beams are not left-to-right");
+
+ Real staffline_f = paper_l ()->rule_thickness ();
+ Real interbeam_f = paper_l ()->interbeam_f (multiple_i_);
- 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 internote_f = here->staff_line_leading_f ()/2;
+ Real beam_f = paper_l ()->beam_thickness_f ();
Real dy = interbeam_f;
Real stemdx = staffline_f;
Molecule rightbeams;
// UGH
- Real nw_f = paper ()->note_width () * 0.8;
+ Real nw_f;
+ if (!here->head_l_arr_.size ())
+ nw_f = 0;
+ else if (here->type_i ()== 1)
+ nw_f = paper_l ()->get_var ("wholewidth");
+ else if (here->type_i () == 2)
+ nw_f = paper_l ()->note_width () * 0.8;
+ else
+ nw_f = paper_l ()->get_var ("quartwidth");
/* half beams extending to the left. */
if (prev)
*/
Real w = here->hpos_f () - prev->hpos_f ();
w = w/2 <? nw_f;
- Atom a;
+ Molecule a;
if (lhalfs) // generates warnings if not
a = lookup_l ()->beam (sl, w, beam_f);
a.translate (Offset (-w, -w * sl));
for (int j = 0; j < lhalfs; j++)
{
- Atom b (a);
+ Molecule b (a);
b.translate_axis (-dir_ * dy * (lwholebeams+j), Y_AXIS);
- leftbeams.add_atom (b);
+ leftbeams.add_molecule (b);
}
}
int rwholebeams = here->beams_i_drul_[RIGHT] <? next->beams_i_drul_[LEFT];
Real w = next->hpos_f () - here->hpos_f ();
- Atom a = lookup_l ()->beam (sl, w + stemdx, beam_f);
+ Molecule 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_)
+
+ SCM gap = get_elt_property (beam_gap_scm_sym);
+ if (gap != SCM_BOOL_F)
{
- int nogap = rwholebeams - here->beam_gap_i_;
+ int gap_i = gh_scm2int (SCM_CDR (gap));
+ int nogap = rwholebeams - gap_i;
+
for (; j < nogap; j++)
{
- Atom b (a);
+ Molecule b (a);
b.translate_axis (-dir_ * dy * j, Y_AXIS);
- rightbeams.add_atom (b);
+ rightbeams.add_molecule (b);
}
// TODO: notehead widths differ for different types
gap_f = nw_f / 2;
for (; j < rwholebeams; j++)
{
- Atom b (a);
- b.translate (Offset (gap_f, -dir_ * dy * j));
- rightbeams.add_atom (b);
+ Molecule b (a);
+ if (!here->invisible_b ())
+ b.translate (Offset (gap_f, -dir_ * dy * j));
+ else
+ b.translate (Offset (0, -dir_ * dy * j));
+ rightbeams.add_molecule (b);
}
w = w/2 <? nw_f;
for (; j < rwholebeams + rhalfs; j++)
{
- Atom b (a);
+ Molecule b (a);
b.translate_axis (-dir_ * dy * j, Y_AXIS);
- rightbeams.add_atom (b);
+ rightbeams.add_molecule (b);
}
}
projects / lilypond.git / blobdiff