source file of the GNU LilyPond music typesetter
- (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ (c) 1997--1999 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "proto.hh"
-#include "dimen.hh"
#include "misc.hh"
#include "debug.hh"
-#include "atom.hh"
+#include "dimension-cache.hh"
+
+#include "align-element.hh"
#include "stem.hh"
#include "paper-def.hh"
#include "lookup.hh"
#include "stem-info.hh"
+#include "beam.hh"
+#include "staff-symbol.hh"
Stem_info::Stem_info ()
{
}
+/*
+ FIXME: y dims should not be in internote.
+ */
-Stem_info::Stem_info (Stem const *s)
+Stem_info::Stem_info (Stem*s, int mult)
{
- x = s->hpos_f ();
- dir_ = s->dir_;
- beams_i_ = 0 >? (abs (s->flag_i_) - 2);
-
- /*
- [todo]
- * get algorithm
- * runtime
-
- Breitkopf + H\"artel:
- miny_f_ = interline + #beams * interbeam
- ideal8 = 2 * interline + interbeam
- ideal16,32,64,128 = 1.5 * interline + #beams * interbeam
-
- * B\"arenreiter:
- miny_f_ = interline + #beams * interbeam
- ideal8,16 = 2 interline + #beams * interbeam
- ideal32,64,128 = 1.5 interline + #beams * interbeam
-
- */
-
- Real internote_f = s->paper ()->internote_f ();
- Real interline_f = 2 * internote_f;
- Real notehead_y = interline_f;
- // huh? why do i seem to need the / 2 ?
- Real interbeam_f = s->paper ()->interbeam_f ();
- // Real interbeam_f = s->paper ()->interbeam_f () / 2;
- // perhaps bo dim (y) = internote?
+ mult_i_ =mult;
+ stem_l_ = s;
+ x_ = stem_l_->hpos_f ();
+ dir_ = stem_l_->dir_;
+ SCM bd = stem_l_->remove_elt_property (beam_dir_scm_sym);
+
+ beam_dir_ = gh_scm2int (SCM_CDR(bd));
+ interstaff_f_ = 0;
+
+ Paper_def* paper_l = stem_l_->paper_l ();
+ Real internote_f = stem_l_->staff_line_leading_f ()/2;
+ Real interbeam_f = paper_l->interbeam_f (mult_i_);
+ Real beam_f = paper_l->beam_thickness_f ();
- idealy_f_ = dir_ * s->stem_begin_f () + beams_i_ * interbeam_f;
- if (beams_i_ < 3)
- idealy_f_ += 2 * interline_f;
- else
- idealy_f_ += 1.5 * interline_f;
- idealy_f_ /= internote_f;
- miny_f_ = dir_ * s->stem_begin_f () + 2 + beams_i_ * interbeam_f / internote_f;
-
- idealy_f_ = miny_f_ >? idealy_f_;
- // assert (miny_f_ <= idealy_f_);
+ {
+ static int i = 1;
+ DOUT << "******" << i++ << "******\n"
+ << "begin_f: " << stem_l_->stem_begin_f () * dir_
+ << "\nchord_f/i: " << stem_l_->chord_start_f () * dir_ / internote_f << '\n';
+ }
+
+ // strangely enough, dim(chord_start_f) == pt (and not internote!)
+ idealy_f_ = stem_l_->chord_start_f () / internote_f;
+
+ // calculate using dim(y) == pt
+ idealy_f_ *= internote_f;
+
+ // for simplicity, we calculate as if dir == UP
+ idealy_f_ *= beam_dir_;
+
+ bool grace_b = stem_l_->get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+
+ int stem_max = (int)rint(paper_l->get_var ("stem_max"));
+ String type_str = grace_b ? "grace_" : "";
+ Real min_stem_f = paper_l->get_var (type_str + "minimum_stem_length"
+ + to_str (mult_i_ <? stem_max)) * internote_f;
+ Real stem_f = paper_l->get_var (type_str + "stem_length"
+ + to_str (mult_i_ <? stem_max))* internote_f;
+
+ if (!beam_dir_ || (beam_dir_ == dir_))
+ /* normal beamed stem */
+ {
+ if (mult_i_)
+ {
+ idealy_f_ += beam_f;
+ idealy_f_ += (mult_i_ - 1) * interbeam_f;
+ }
+ miny_f_ = idealy_f_;
+ maxy_f_ = INT_MAX;
+
+ idealy_f_ += stem_f;
+ miny_f_ += min_stem_f;
+
+ /*
+ lowest beam of (UP) beam must never be lower than second staffline
+
+ Hmm, reference (Wanske?)
+
+ Although this (additional) rule is probably correct,
+ I expect that highest beam (UP) should also never be lower
+ than middle staffline, just as normal stems.
+
+ */
+ if (!grace_b)
+ {
+ //highest beam of (UP) beam must never be lower than middle staffline
+ miny_f_ = miny_f_ >? 0;
+ //lowest beam of (UP) beam must never be lower than second staffline
+ miny_f_ = miny_f_ >? (- 2 * internote_f - beam_f
+ + (mult_i_ > 0) * beam_f + interbeam_f * (mult_i_ - 1));
+ }
+ }
+ else
+ /* knee */
+ {
+ idealy_f_ -= beam_f;
+ // idealy_f_ -= (mult_i_ - 1) * interbeam_f;
+ // idealy_f_ += (mult_i_ - stem_l_->flag_i_ >? 0) * interbeam_f;
+ maxy_f_ = idealy_f_;
+ miny_f_ = -INT_MAX;
+
+ idealy_f_ -= stem_f;
+ maxy_f_ -= min_stem_f;
+ }
+
+ // set dim(y) == internote
+ idealy_f_ /= internote_f;
+ miny_f_ /= internote_f;
+ maxy_f_ /= internote_f;
+
+ DOUT << "dir_: " << dir_ << '\n';
+ DOUT << "mult_i_: " << mult_i_ << '\n';
+ DOUT << "idealy_f_: " << idealy_f_ << '\n';
+ DOUT << "miny_f_: " << miny_f_ << '\n';
+ DOUT << "maxy_f_: " << maxy_f_ << '\n';
+
+ idealy_f_ = maxy_f_ <? idealy_f_;
+ idealy_f_ = miny_f_ >? idealy_f_;
+
+ // interstaff beam
+ Beam* beam_l = stem_l_->beam_l_;
+
+ Graphical_element *common = stem_l_->common_refpoint (beam_l, Y_AXIS);
+ Align_element * align = dynamic_cast<Align_element*> (common);
+ if (align && align->axis() == Y_AXIS)
+ {
+ if (align->threshold_interval_[MIN] !=
+ align->threshold_interval_[MAX])
+ warning (_ ("minVerticalAlign != maxVerticalAlign: interstaff beams/slurs may be broken"));
+
+ interstaff_f_ = align->threshold_interval_[MIN] / internote_f;
+
+ Graphical_element * beam_refpoint = beam_l;
+ Graphical_element * stem_refpoint = stem_l_;
+
+ while (beam_refpoint->parent_l (Y_AXIS) != common)
+ beam_refpoint = beam_refpoint->parent_l (Y_AXIS);
+ while (stem_refpoint->parent_l (Y_AXIS) != common)
+ stem_refpoint = stem_refpoint->parent_l (Y_AXIS);
+
+
+ int beam_prio =
+ align->get_priority (dynamic_cast<Score_element*> (beam_refpoint));
+ int stem_prio =
+ align->get_priority (dynamic_cast<Score_element*> (stem_refpoint));
+
+ /*
+ our staff is lower -> interstaff_f_ *= -1
+ */
+ if (beam_prio < stem_prio)
+ interstaff_f_ *= -1;
+
+ idealy_f_ += interstaff_f_ * beam_dir_;
+ miny_f_ += interstaff_f_ * beam_dir_;
+ maxy_f_ += interstaff_f_ * beam_dir_;
+ }
}
projects / lilypond.git / blobdiff