source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
TODO: This is way too hairy
*/
+#include <math.h> // m_pi
+#include "directional-element-interface.hh"
+#include "note-head.hh"
#include "stem.hh"
#include "debug.hh"
#include "paper-def.hh"
-#include "note-head.hh"
+#include "rhythmic-head.hh"
#include "lookup.hh"
#include "molecule.hh"
#include "paper-column.hh"
#include "misc.hh"
#include "beam.hh"
#include "rest.hh"
+#include "group-interface.hh"
+#include "cross-staff.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
+
void
-Stem::set_direction (Direction d)
+Stem::set_beaming (Score_element*me ,int i, Direction d )
{
- if (!dir_)
- warning (_ ("stem direction set already!"));
-
- dir_ = d;
+ SCM pair = me->get_elt_property ("beaming");
+
+ if (!gh_pair_p (pair))
+ {
+ pair = gh_cons (gh_int2scm (0),gh_int2scm (0));
+ me-> set_elt_property ("beaming", pair);
+ }
+ index_set_cell (pair, d, gh_int2scm (i));
+}
- /*
- todo
- */
+int
+Stem::beam_count (Score_element*me,Direction d)
+{
+ SCM p=me->get_elt_property ("beaming");
+ if (gh_pair_p (p))
+ return gh_scm2int (index_cell (p,d));
+ else
+ return 0;
}
-Stem::Stem ()
+Interval
+Stem::head_positions (Score_element*me)
{
- beams_i_drul_[LEFT] = beams_i_drul_[RIGHT] = -1;
- yextent_drul_[DOWN] = yextent_drul_[UP] = 0;
- flag_i_ = 2;
- dir_ = CENTER;
- beam_l_ = 0;
+ if (!heads_i (me))
+ {
+ Interval iv;
+ return iv;
+ }
+
+ Drul_array<Score_element*> e (extremal_heads (me));
+
+ return Interval (Staff_symbol_referencer::position_f (e[DOWN]),
+ Staff_symbol_referencer::position_f ( e[UP]));
}
-Interval_t<int>
-Stem::head_positions () const
+
+Real
+Stem::chord_start_f (Score_element*me)
{
- /*
- Mysterious FreeBSD fix by John Galbraith. Somehow, the empty intervals
- trigger FP exceptions on FreeBSD. Fix: do not return infinity
+ return head_positions(me)[get_direction (me)]
+ * Staff_symbol_referencer::staff_space (me)/2.0;
+}
- */
- if (!head_l_arr_.size ())
+Real
+Stem::stem_end_position (Score_element*me)
+{
+ SCM p =me->get_elt_property ("stem-end-position");
+ Real pos;
+ if (!gh_number_p (p))
{
- return Interval_t<int> (100,-100);
+
+ pos = get_default_stem_end_position (me);
+ me->set_elt_property ("stem-end-position", gh_double2scm (pos));
}
+ else
+ pos = gh_scm2double (p);
+
+ return pos;
+}
+
+Direction
+Stem::get_direction (Score_element*me)
+{
+ Direction d = Directional_element_interface::get (me);
- Interval_t<int> r;
- for (int i =0; i < head_l_arr_.size (); i++)
+ if (!d)
{
- int p = (int)head_l_arr_[i]->position_f ();
- r[BIGGER] = r[BIGGER] >? p;
- r[SMALLER] = r[SMALLER] <? p;
+ d = get_default_dir (me);
+ // urg, AAARGH!
+ Directional_element_interface::set (me, d);
}
- return r;
+ return d ;
}
+
void
-Stem::do_print () const
+Stem::set_stemend (Score_element*me, Real se)
{
-#ifndef NPRINT
- DEBUG_OUT << "flag "<< flag_i_;
- if (beam_l_)
- DEBUG_OUT << "beamed";
-#endif
+ // todo: margins
+ Direction d= get_direction (me);
+
+ if (d && d * head_positions(me)[get_direction (me)] >= se*d)
+ warning (_ ("Weird stem size; check for narrow beams"));
+
+ me->set_elt_property ("stem-end-position", gh_double2scm (se));
}
-Real
-Stem::stem_length_f () const
+int
+Stem::type_i (Score_element*me)
{
- return yextent_drul_[UP]-yextent_drul_[DOWN] ;
+ return first_head (me) ? Rhythmic_head::balltype_i (first_head (me)) : 2;
}
-Real
-Stem::stem_begin_f () const
+/*
+ Note head that determines hshift for upstems
+ */
+Score_element*
+Stem::support_head (Score_element*me)
{
- return yextent_drul_[Direction(-dir_)];
+ SCM h = me->get_elt_property ("support-head");
+ Score_element * nh = unsmob_element (h);
+ if (nh)
+ return nh;
+ else if (heads_i (me) == 1)
+ {
+ /*
+ UGH.
+ */
+
+ return unsmob_element (gh_car (me->get_elt_property ("heads")));
+ }
+ else
+ return first_head (me);
}
-Real
-Stem::chord_start_f () const
+
+int
+Stem::heads_i (Score_element*me)
{
- return head_positions()[dir_] * staff_line_leading_f ()/2.0;
+ Pointer_group_interface gi (me, "heads");
+ return gi.count ();
}
-Real
-Stem::stem_end_f () const
+/*
+ The note head which forms one end of the stem.
+ */
+Score_element*
+Stem::first_head (Score_element*me)
{
- return yextent_drul_[dir_];
+ return extremal_heads (me)[-get_direction (me)];
}
-void
-Stem::set_stemend (Real se)
+/*
+ START is part where stem reaches `last' head.
+ */
+Drul_array<Score_element*>
+Stem::extremal_heads (Score_element*me)
{
- // todo: margins
- if (dir_ && dir_ * head_positions()[dir_] >= se*dir_)
- warning (_ ("Weird stem size; check for narrow beams"));
-
+ const int inf = 1000000;
+ Drul_array<int> extpos;
+ extpos[DOWN] = inf;
+ extpos[UP] = -inf;
- yextent_drul_[dir_] = se;
- yextent_drul_[Direction(-dir_)] = head_positions()[-dir_];
-}
+ Drul_array<Score_element *> exthead;
+ exthead[LEFT] = exthead[RIGHT] =0;
+
+ for (SCM s = me->get_elt_property ("heads"); gh_pair_p (s); s = gh_cdr (s))
+ {
+ Score_element * n = unsmob_element (gh_car (s));
-int
-Stem::type_i () const
-{
- return head_l_arr_[0]->balltype_i_;
+
+ int p = int(Staff_symbol_referencer::position_f (n));
+
+ Direction d = LEFT;
+ do {
+ if (d* p > d* extpos[d])
+ {
+ exthead[d] = n;
+ extpos[d] = p;
+ }
+ } while (flip (&d) != DOWN);
+ }
+
+ return exthead;
}
void
-Stem::add_head (Rhythmic_head *n)
+Stem::add_head (Score_element*me, Score_element *n)
{
- n->stem_l_ = this;
- n->add_dependency (this); // ?
- if (Note_head *nh = dynamic_cast<Note_head *> (n))
+ n->set_elt_property ("stem", me->self_scm ());
+ n->add_dependency (me);
+
+ if (Note_head::has_interface (n))
{
- head_l_arr_.push (nh);
+ Pointer_group_interface (me, "heads").add_element (n);
}
- else if (Rest *r = dynamic_cast<Rest *> (n))
+ else
{
- rest_l_arr_.push (r);
+ n->set_elt_property ("rest", n->self_scm ());
}
}
bool
-Stem::invisible_b () const
+Stem::invisible_b (Score_element*me)
{
- return (!head_l_arr_.size () ||
- head_l_arr_[0]->balltype_i_ <= 0);
+ return !(heads_i (me) && Rhythmic_head::balltype_i (support_head (me)) >= 1);
}
int
-Stem::get_center_distance (Direction d) const
+Stem::get_center_distance (Score_element*me, Direction d)
{
int staff_center = 0;
- int distance = d*(head_positions()[d] - staff_center);
+ int distance = (int) (d*(head_positions(me)[d] - staff_center));
return distance >? 0;
}
Direction
-Stem::get_default_dir () const
+Stem::get_default_dir (Score_element*me)
{
- int du = get_center_distance (UP);
- int dd = get_center_distance (DOWN);
+ int du = get_center_distance (me,UP);
+ int dd = get_center_distance (me,DOWN);
if (sign (dd - du))
return Direction (sign (dd -du));
- return Direction (int(paper_l ()->get_var ("stem_default_neutral_direction")));
+ return to_dir (me->get_elt_property ("default-neutral-direction"));
}
-Direction
-Stem::get_dir () const
+/*
+ ugh. A is used for different purposes. This functionality should be
+ moved into scheme at some point to get rid of the silly
+ conversions. (but lets wait till we have namespaces in SCM)
+ */
+Real
+Stem::get_default_stem_end_position (Score_element*me)
{
- return dir_;
-}
-
+ bool grace_b = to_boolean (me->get_elt_property ("grace"));
+ String type_str = grace_b ? "grace-" : "";
+ SCM s;
+ Array<Real> a;
-void
-Stem::set_default_stemlen ()
-{
Real length_f = 0.;
- SCM scm_len = get_elt_property(length_scm_sym);
- if (scm_len != SCM_BOOL_F)
+ SCM scm_len = me->get_elt_property("length");
+ if (gh_number_p (scm_len))
{
- length_f = gh_scm2double (SCM_CDR(scm_len));
+ length_f = gh_scm2double (scm_len);
}
else
- length_f = paper_l ()->get_var ("stem_length0");
+ {
+ s = scm_eval2 (ly_symbol2scm ((type_str + "stem-length").ch_C()),
+ SCM_EOL);
+ for (SCM q = s; q != SCM_EOL; q = gh_cdr (q))
+ a.push (gh_scm2double (gh_car (q)));
+
+ // stem uses half-spaces
+ length_f = a[((flag_i (me) - 2) >? 0) <? (a.size () - 1)] * 2;
+ }
- bool grace_b = get_elt_property (grace_scm_sym) != SCM_BOOL_F;
- String type_str = grace_b ? "grace_" : "";
- Real shorten_f = paper_l ()->get_var (type_str + "forced_stem_shorten0");
+ a.clear ();
+ s = scm_eval2 (ly_symbol2scm ((type_str + "stem-shorten").ch_C()),
+ SCM_EOL);
+ for (SCM q = s; q != SCM_EOL; q = gh_cdr (q))
+ a.push (gh_scm2double (gh_car (q)));
- if (!dir_)
- dir_ = get_default_dir ();
+ // stem uses half-spaces
+
+ // fixme: use gh_list_ref () iso. array[]
+ Real shorten_f = a[((flag_i (me) - 2) >? 0) <? (a.size () - 1)] * 2;
+
+ /* URGURGURG
+ 'set-default-stemlen' sets direction too
+ */
+ Direction dir = get_direction (me);
+ if (!dir)
+ {
+ dir = get_default_dir (me);
+ Directional_element_interface::set (me, dir);
+ }
+
/*
stems in unnatural (forced) direction should be shortened,
according to [Roush & Gourlay]
*/
- if (((int)chord_start_f ())
- && (dir_ != get_default_dir ()))
+ if (((int)chord_start_f (me))
+ && (get_direction (me) != get_default_dir (me)))
length_f -= shorten_f;
- if (flag_i_ >= 5)
- length_f += 2.0;
- if (flag_i_ >= 6)
- length_f += 1.0;
+
+ Real st = head_positions(me)[dir] + dir * length_f;
- set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + length_f:
- head_positions()[SMALLER] - length_f);
+ bool no_extend_b = to_boolean (me->get_elt_property ("no-stem-extend"));
+ if (!grace_b && !no_extend_b && dir * st < 0)
+ st = 0.0;
- bool no_extend_b = get_elt_property (no_stem_extend_scm_sym) != SCM_BOOL_F;
- if (!grace_b && !no_extend_b && (dir_ * stem_end_f () < 0))
- set_stemend (0);
+ return st;
}
-//xxx
-void
-Stem::set_default_extents ()
+/*
+ FIXME: wrong name
+ */
+int
+Stem::flag_i (Score_element*me)
{
- if (!stem_length_f ())
- set_default_stemlen ();
-
+ SCM s = me->get_elt_property ("duration-log");
+ return (gh_number_p (s)) ? gh_scm2int (s) : 2;
}
void
-Stem::set_noteheads ()
+Stem::position_noteheads (Score_element*me)
{
- if (!head_l_arr_.size ())
+ if (!heads_i (me))
return;
- head_l_arr_.sort (Note_head::compare);
- if (dir_ < 0)
- head_l_arr_.reverse ();
-
- Note_head * beginhead = head_l_arr_[0];
- beginhead->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
- if (beginhead != head_l_arr_.top ())
- head_l_arr_.top ()->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
- int parity=1;
- int lastpos = int (beginhead->position_f ());
- for (int i=1; i < head_l_arr_.size (); i ++)
+ Link_array<Score_element> heads =
+ Pointer_group_interface__extract_elements (me, (Score_element*)0, "heads");
+
+ heads.sort (compare_position);
+ Direction dir =get_direction (me);
+
+ if (dir < 0)
+ heads.reverse ();
+
+
+ Real w = support_head (me)->extent (X_AXIS)[dir];
+ for (int i=0; i < heads.size (); i++)
+ {
+ heads[i]->translate_axis (w - heads[i]->extent (X_AXIS)[dir], X_AXIS);
+ }
+
+ bool parity= true; // todo: make me settable.
+ int lastpos = int (Staff_symbol_referencer::position_f (heads[0]));
+ for (int i=1; i < heads.size (); i ++)
{
- int dy =abs (lastpos- (int)head_l_arr_[i]->position_f ());
+ Real p = Staff_symbol_referencer::position_f (heads[i]);
+ int dy =abs (lastpos- (int)p);
if (dy <= 1)
{
if (parity)
- head_l_arr_[i]->flip_around_stem (dir_);
+ {
+ Real l = heads[i]->extent (X_AXIS).length ();
+ heads[i]->translate_axis (l * get_direction (me), X_AXIS);
+ }
parity = !parity;
}
else
- parity = 1;
- lastpos = int (head_l_arr_[i]->position_f ());
+ parity = true;
+
+ lastpos = int (p);
}
}
-void
-Stem::do_pre_processing ()
+MAKE_SCHEME_CALLBACK(Stem,before_line_breaking);
+SCM
+Stem::before_line_breaking (SCM smob)
{
- if (yextent_drul_[DOWN]== yextent_drul_[UP])
- set_default_extents ();
- set_noteheads ();
+ Score_element*me = unsmob_element (smob);
+ stem_end_position (me); // ugh. Trigger direction calc.
+ position_noteheads (me);
- if (invisible_b ())
+ if (invisible_b (me))
{
- set_elt_property (transparent_scm_sym, SCM_BOOL_T);
+ me->remove_elt_property ("molecule-callback");
+ // suicide();
}
- set_empty (invisible_b (), X_AXIS, Y_AXIS);
- set_spacing_hints ();
+
+ set_spacing_hints (me);
+ return SCM_UNSPECIFIED;
}
/**
set stem directions for hinting the optical spacing correction.
- Modifies DIR_LIST property of the Stem's Score_column
+ Modifies DIR_LIST property of the Stem's Paper_column
TODO: more advanced: supply height of noteheads as well, for more advanced spacing possibilities
*/
-
void
-Stem::set_spacing_hints ()
+Stem::set_spacing_hints (Score_element*me)
{
- if (!invisible_b ())
+ if (!invisible_b (me))
{
- SCM scmdir = gh_int2scm (dir_);
- SCM dirlist = column_l ()->get_elt_property (dir_list_scm_sym);
- if (dirlist == SCM_BOOL_F)
+ SCM scmdir = gh_int2scm (get_direction (me));
+
+ Item* item = dynamic_cast<Item*> (me);
+ Item * col = item->column_l ();
+ SCM dirlist =col->get_elt_property ("dir-list");
+ if (dirlist == SCM_UNDEFINED)
dirlist = SCM_EOL;
- else
- dirlist = SCM_CDR (dirlist);
if (scm_sloppy_memq (scmdir, dirlist) == SCM_EOL)
{
dirlist = gh_cons (scmdir, dirlist);
- column_l ()->set_elt_property (dir_list_scm_sym, dirlist);
+ col->set_elt_property ("dir-list", dirlist);
}
}
}
Molecule
-Stem::flag () const
+Stem::flag (Score_element*me)
{
String style;
- SCM st = get_elt_property (style_scm_sym);
- if ( st != SCM_BOOL_F)
+ SCM st = me->get_elt_property ("flag-style");
+ if ( gh_string_p (st))
{
- st = SCM_CDR(st);
style = ly_scm2string (st);
}
- char c = (dir_ == UP) ? 'u' : 'd';
- Molecule m = lookup_l ()->afm_find (String ("flags-") + to_str (c) +
- to_str (flag_i_));
+ char c = (get_direction (me) == UP) ? 'u' : 'd';
+ Molecule m = me->lookup_l ()->afm_find (String ("flags-") + to_str (c) +
+ to_str (flag_i (me)));
if (!style.empty_b ())
- m.add_molecule(lookup_l ()->afm_find (String ("flags-") + to_str (c) + style));
+ m.add_molecule(me->lookup_l ()->afm_find (String ("flags-") + to_str (c) + style));
return m;
}
Interval
-Stem::do_width () const
+Stem::dim_callback (Score_element *se, Axis )
{
Interval r (0, 0);
- if (beam_l_ || abs (flag_i_) <= 2)
+ if (unsmob_element (se->get_elt_property ("beam")) || abs (flag_i (se)) <= 2)
; // TODO!
else
{
- r = flag ().dim_.x ();
- r += note_delta_f ();
+ r = flag (se).extent (X_AXIS);
}
return r;
}
+const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh! Should be settable.
-const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh!
+MAKE_SCHEME_CALLBACK(Stem,brew_molecule);
-Molecule*
-Stem::do_brew_molecule_p () const
+SCM
+Stem::brew_molecule (SCM smob)
{
- Molecule *mol_p =new Molecule;
- Drul_array<Real> stem_y = yextent_drul_;
- Real dy = staff_line_leading_f ()/2.0;
+ Score_element*me = unsmob_element (smob);
+ Molecule mol;
+ Direction d = get_direction (me);
+
+
+ Real y1 = Staff_symbol_referencer::position_f (first_head (me));
+ Real y2 = stem_end_position (me);
+
+ Interval stem_y(y1,y2);
+ stem_y.unite (Interval (y2,y1));
+ Real dy = Staff_symbol_referencer::staff_space (me)/2.0;
Real head_wid = 0;
- if (head_l_arr_.size ())
- head_wid = head_l_arr_[0]->extent (X_AXIS).length ();
- stem_y[Direction(-dir_)] += dir_ * head_wid * tan(ANGLE)/(2*dy);
+ if (support_head (me))
+ head_wid = support_head (me)->extent (X_AXIS).length ();
+ stem_y[Direction(-d)] += d * head_wid * tan(ANGLE)/(2*dy);
- if (!invisible_b ())
+ if (!invisible_b (me))
{
- Real stem_width = paper_l ()->get_var ("stemthickness");
- Molecule ss =lookup_l ()->filledbox (Box (Interval (-stem_width/2, stem_width/2),
+ Real stem_width = gh_scm2double (me->get_elt_property ("thickness")) * me->paper_l ()->get_var ("stafflinethickness");
+ Molecule ss =me->lookup_l ()->filledbox (Box (Interval (-stem_width/2, stem_width/2),
Interval (stem_y[DOWN]*dy, stem_y[UP]*dy)));
- mol_p->add_molecule (ss);
+ mol.add_molecule (ss);
}
- if (!beam_l_ && abs (flag_i_) > 2)
+ if (!beam_l (me) && abs (flag_i (me)) > 2)
{
- Molecule fl = flag ();
- fl.translate_axis(stem_y[dir_]*dy, Y_AXIS);
- mol_p->add_molecule (fl);
+ Molecule fl = flag (me);
+ fl.translate_axis(stem_y[d]*dy, Y_AXIS);
+ mol.add_molecule (fl);
}
- if (head_l_arr_.size())
- {
- mol_p->translate_axis (note_delta_f (), X_AXIS);
- }
- return mol_p;
+ return mol.create_scheme();
}
Real
-Stem::note_delta_f () const
+Stem::off_callback (Score_element * me, Axis)
{
Real r=0;
- if (head_l_arr_.size())
+ if (Score_element * f = first_head (me))
{
- Interval head_wid(0, head_l_arr_[0]->extent (X_AXIS).length ());
- Real rule_thick = paper_l ()->get_var ("stemthickness");
-
- Interval stem_wid(-rule_thick/2, rule_thick/2);
- if (dir_ == CENTER)
- r = head_wid.center ();
- else
- r = head_wid[dir_] - stem_wid[dir_];
+ Interval head_wid(0, f->extent (X_AXIS).length ());
+
+ if (to_boolean (me->get_elt_property ("stem-centered")))
+ return head_wid.center ();
+
+ Real rule_thick = gh_scm2double (me->get_elt_property ("thickness")) * me->paper_l ()->get_var ("stafflinethickness");
+ Direction d = get_direction (me);
+ r = head_wid[d] - d * rule_thick ;
}
return r;
}
-Real
-Stem::hpos_f () const
+
+
+Score_element*
+Stem::beam_l (Score_element*me)
{
- return note_delta_f () + Item::hpos_f ();
+ SCM b= me->get_elt_property ("beam");
+ return unsmob_element (b);
}
-void
-Stem::do_substitute_element_pointer (Score_element*o,Score_element*n)
+
+// ugh still very long.
+Stem_info
+Stem::calc_stem_info (Score_element*me)
{
- if (Note_head*h=dynamic_cast<Note_head*> (o))
- head_l_arr_.substitute (h, dynamic_cast<Note_head*>(n));
- if (Rest *r=dynamic_cast<Rest*> (o))
- rest_l_arr_.substitute (r, dynamic_cast<Rest*>(n));
- if (Beam* b = dynamic_cast<Beam*> (o))
+ Score_element * beam = beam_l (me);
+
+ Direction beam_dir = Directional_element_interface::get (beam);
+ if (!beam_dir)
+ {
+ programming_error ("Beam dir not set.");
+ beam_dir = UP;
+ }
+
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ Real half_space = staff_space / 2;
+ int multiplicity = Beam::get_multiplicity (beam);
+
+
+ SCM space_proc = beam->get_elt_property ("beam-space-function");
+ SCM space = gh_call1 (space_proc, gh_int2scm (multiplicity));
+ Real interbeam_f = gh_scm2double (space) * staff_space;
+
+ Real thick = gh_scm2double (beam->get_elt_property ("beam-thickness"));
+ Stem_info info;
+ info.idealy_f_ = chord_start_f (me);
+
+ // for simplicity, we calculate as if dir == UP
+ info.idealy_f_ *= beam_dir;
+ SCM grace_prop = me->get_elt_property ("grace");
+
+ bool grace_b = to_boolean (grace_prop);
+
+ Array<Real> a;
+ SCM s;
+ String type_str = grace_b ? "grace-" : "";
+
+ s = scm_eval2 (ly_symbol2scm ((type_str + "beamed-stem-minimum-length").ch_C()), SCM_EOL);
+ a.clear ();
+ for (SCM q = s; q != SCM_EOL; q = gh_cdr (q))
+ a.push (gh_scm2double (gh_car (q)));
+
+
+ Real minimum_length = a[multiplicity <? (a.size () - 1)] * staff_space;
+ s = scm_eval2 (ly_symbol2scm ((type_str + "beamed-stem-length").ch_C()),
+ SCM_EOL);
+
+ a.clear();
+ for (SCM q = s; q != SCM_EOL; q = gh_cdr (q))
+ a.push (gh_scm2double (gh_car (q)));
+
+ Real stem_length = a[multiplicity <? (a.size () - 1)] * staff_space;
+
+ if (!beam_dir || (beam_dir == Directional_element_interface::get (me)))
+ /* normal beamed stem */
+ {
+ if (multiplicity)
+ {
+ info.idealy_f_ += thick + (multiplicity - 1) * interbeam_f;
+ }
+ info.miny_f_ = info.idealy_f_;
+ info.maxy_f_ = INT_MAX;
+
+ info.idealy_f_ += stem_length;
+ info.miny_f_ += minimum_length;
+
+ /*
+ 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.
+
+ */
+ bool no_extend_b = to_boolean (me->get_elt_property ("no-stem-extend"));
+ if (!grace_b && !no_extend_b)
+ {
+ /* highest beam of (UP) beam must never be lower than middle
+ staffline
+ lowest beam of (UP) beam must never be lower than second staffline
+ */
+ info.miny_f_ =
+ info.miny_f_ >? 0
+ >? (- 2 * half_space - thick
+ + (multiplicity > 0) * thick
+ + interbeam_f * (multiplicity - 1));
+ }
+ }
+ else
+ /* knee */
{
- if (b == beam_l_)
- beam_l_ = dynamic_cast<Beam*> (n);
+ info.idealy_f_ -= thick;
+ info.maxy_f_ = info.idealy_f_;
+ info.miny_f_ = -INT_MAX;
+
+ info.idealy_f_ -= stem_length;
+ info.maxy_f_ -= minimum_length;
}
- Staff_symbol_referencer::do_substitute_element_pointer (o,n);
+
+ info.idealy_f_ = (info.maxy_f_ <? info.idealy_f_) >? info.miny_f_;
+
+ s = beam->get_elt_property ("shorten");
+ if (gh_number_p (s))
+ info.idealy_f_ -= gh_scm2double (s);
+
+ Real interstaff_f = -beam_dir* calc_interstaff_dist (dynamic_cast<Item*> (me), dynamic_cast<Spanner*> (beam));
+
+ info.idealy_f_ += interstaff_f;
+ info.miny_f_ += interstaff_f;
+ info.maxy_f_ += interstaff_f ;
+
+ return info;
+}
+
+bool
+Stem::has_interface (Score_element*m)
+{
+ return m && m->has_interface (ly_symbol2scm ("stem-interface"));
+}
+
+void
+Stem::set_interface (Score_element*me)
+{
+ me->set_elt_property ("heads", SCM_EOL);
+ me->add_offset_callback ( &Stem::off_callback, X_AXIS);
+ me->set_interface (ly_symbol2scm ("stem-interface"));
}
projects / lilypond.git / blobdiff