/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1996--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1996--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
TODO: This is way too hairy
// todo: margins
Direction d = get_grob_direction (me);
- Grob *beam = unsmob_grob (me->get_object ("beam"));
+ Grob *beam = Grob::unsmob (me->get_object ("beam"));
if (d && d * head_positions (me)[get_grob_direction (me)] >= se * d)
me->warning (_ ("weird stem size, check for narrow beams"));
- Interval height = me->pure_height (me, 0, INT_MAX);
+ // trigger note collision mechanisms
+ Real stem_beg = internal_calc_stem_begin_position (me, false);
Real staff_space = Staff_symbol_referencer::staff_space (me);
Real half_space = staff_space * 0.5;
+ Interval height;
+ height[-d] = stem_beg * half_space;
height[d] = se * half_space + beam_end_corrective (me);
Real stemlet_length = robust_scm2double (me->get_property ("stemlet-length"),
Grob *n = heads[i];
int p = Staff_symbol_referencer::get_rounded_position (n);
- Direction d = LEFT;
- do
+ for (LEFT_and_RIGHT (d))
{
if (d * p > d * extpos[d])
{
extpos[d] = p;
}
}
- while (flip (&d) != DOWN);
}
return exthead;
}
bool
Stem::is_invisible (Grob *me)
{
- return !is_normal_stem (me)
- && (robust_scm2double (me->get_property ("stemlet-length"),
- 0.0) == 0.0);
+ if (is_normal_stem (me))
+ return false;
+ else if (head_count (me))
+ return true;
+ else // if there are no note-heads, we might want stemlets
+ return 0.0 == robust_scm2double (me->get_property ("stemlet-length"), 0.0);
}
bool
if (!head_count (me))
return false;
- extract_grob_set (me, "note-heads", heads);
- SCM style = heads[0]->get_property ("style");
- return style != ly_symbol2scm ("kievan") && scm_to_int (me->get_property ("duration-log")) >= 1;
+ return scm_to_int (me->get_property ("duration-log")) >= 1;
}
MAKE_SCHEME_CALLBACK (Stem, pure_height, 3)
SCM /* start */,
SCM /* end */)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return ly_interval2scm (internal_pure_height (me, true));
}
if (!is_normal_stem (me))
return Interval (0.0, 0.0);
- Grob *beam = unsmob_grob (me->get_object ("beam"));
+ Grob *beam = Grob::unsmob (me->get_object ("beam"));
Interval iv = internal_height (me, false);
{
Interval overshoot;
Direction dir = get_grob_direction (me);
- Direction d = DOWN;
- do
+ for (DOWN_and_UP (d))
overshoot[d] = d == dir ? dir * infinity_f : iv[d];
- while (flip (&d) != DOWN);
vector<Interval> heights;
vector<Grob *> my_stems;
{
Interval overshoot;
Direction dir = get_grob_direction (me);
- Direction d = DOWN;
- do
+ for (DOWN_and_UP (d))
overshoot[d] = d == dir ? dir * infinity_f : my_iv[d];
- while (flip (&d) != DOWN);
iv.intersect (overshoot);
dynamic_cast<Item *> (me)->cache_pure_height (iv);
SCM
Stem::calc_stem_end_position (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return scm_from_double (internal_calc_stem_end_position (me, true));
}
SCM, /* start */
SCM /* end */)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return scm_from_double (internal_calc_stem_end_position (me, false));
}
length *= robust_scm2double (me->get_property ("length-fraction"), 1.0);
/* Tremolo stuff. */
- Grob *t_flag = unsmob_grob (me->get_object ("tremolo-flag"));
- if (t_flag && (!unsmob_grob (me->get_object ("beam")) || !calc_beam))
+ Grob *t_flag = Grob::unsmob (me->get_object ("tremolo-flag"));
+ if (t_flag && (!Grob::unsmob (me->get_object ("beam")) || !calc_beam))
{
/* Crude hack: add extra space if tremolo flag is there.
SCM
Stem::calc_positioning_done (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
if (!head_count (me))
return SCM_BOOL_T;
= hed->extent (hed, X_AXIS).linear_combination (CENTER)
- heads[i]->extent (heads[i], X_AXIS).linear_combination (CENTER);
- heads[i]->translate_axis (amount, X_AXIS);
+ if (!isnan (amount)) // empty heads can produce NaN
+ heads[i]->translate_axis (amount, X_AXIS);
}
bool parity = true;
Real lastpos = Real (Staff_symbol_referencer::get_position (heads[0]));
SCM
Stem::calc_direction (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Direction dir = CENTER;
- if (Grob *beam = unsmob_grob (me->get_object ("beam")))
+ if (Grob *beam = Grob::unsmob (me->get_object ("beam")))
{
SCM ignore_me = beam->get_property ("direction");
(void) ignore_me;
SCM
Stem::calc_default_direction (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Direction dir = CENTER;
int staff_center = 0;
SCM
Stem::height (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return ly_interval2scm (internal_height (me, true));
}
Real
Stem::beam_end_corrective (Grob *me)
{
- Grob *beam = unsmob_grob (me->get_object ("beam"));
+ Grob *beam = Grob::unsmob (me->get_object ("beam"));
Direction dir = get_grob_direction (me);
if (beam)
{
Stem::internal_height (Grob *me, bool calc_beam)
{
Grob *beam = get_beam (me);
- if (!is_valid_stem (me) && ! beam)
+ if (!is_valid_stem (me) && !beam)
return Interval ();
Direction dir = get_grob_direction (me);
(void) beam->get_property ("quantized-positions");
}
+ /*
+ If there is a beam but no stem, slope calculations depend on this
+ routine to return where the stem end /would/ be.
+ */
+ if (calc_beam && !beam && !Stencil::unsmob (me->get_property ("stencil")))
+ return Interval ();
+
Real y1 = robust_scm2double ((calc_beam
? me->get_property ("stem-begin-position")
: me->get_pure_property ("stem-begin-position", 0, INT_MAX)),
SCM
Stem::width (SCM e)
{
- Grob *me = unsmob_grob (e);
+ Grob *me = Grob::unsmob (e);
Interval r;
SCM
Stem::calc_stem_begin_position (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return scm_from_double (internal_calc_stem_begin_position (me, true));
}
SCM, /* start */
SCM /* end */)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
return scm_from_double (internal_calc_stem_begin_position (me, false));
}
Real y_attach = Note_head::stem_attachment_coordinate (head, Y_AXIS);
y_attach = head_height.linear_combination (y_attach);
- pos += d * y_attach * 2 / ss;
+ if (!isinf (y_attach) && !isnan (y_attach)) // empty heads
+ pos += d * y_attach * 2 / ss;
}
return pos;
}
+
+MAKE_SCHEME_CALLBACK (Stem, pure_calc_length, 3);
+SCM
+Stem::pure_calc_length (SCM smob, SCM /*start*/, SCM /*end*/)
+{
+ Grob *me = Grob::unsmob (smob);
+ Real beg = robust_scm2double (me->get_pure_property ("stem-begin-position", 0, INT_MAX), 0.0);
+ Real res = fabs (internal_calc_stem_end_position (me, false) - beg);
+ return scm_from_double (res);
+}
+
+MAKE_SCHEME_CALLBACK (Stem, calc_length, 1);
+SCM
+Stem::calc_length (SCM smob)
+{
+ Grob *me = Grob::unsmob (smob);
+ if (Grob::unsmob (me->get_object ("beam")))
+ {
+ me->programming_error ("ly:stem::calc-length called but will not be used for beamed stem.");
+ return scm_from_double (0.0);
+ }
+
+ Real beg = robust_scm2double (me->get_property ("stem-begin-position"), 0.0);
+ Real res = fabs (internal_calc_stem_end_position (me, true) - beg);
+ return scm_from_double (res);
+}
+
bool
Stem::is_valid_stem (Grob *me)
{
/* TODO: make the stem start a direction ?
This is required to avoid stems passing in tablature chords. */
Grob *lh = get_reference_head (me);
- Grob *beam = unsmob_grob (me->get_object ("beam"));
+ Grob *beam = Grob::unsmob (me->get_object ("beam"));
if (!lh && !beam)
return false;
- if (lh && robust_scm2int (lh->get_property ("duration-log"), 0) < 1)
- return false;
-
if (is_invisible (me))
return false;
SCM
Stem::print (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
if (!is_valid_stem (me))
return SCM_EOL;
SCM
Stem::offset_callback (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
extract_grob_set (me, "rests", rests);
if (rests.size ())
Direction d = get_grob_direction (me);
Real real_attach = head_wid.linear_combination (d * attach);
- Real r = real_attach;
+ Real r = isnan(real_attach)? 0.0: real_attach;
/* If not centered: correct for stem thickness. */
string style = robust_symbol2string (f->get_property ("style"), "default");
Stem::get_beam (Grob *me)
{
SCM b = me->get_object ("beam");
- return dynamic_cast<Spanner *> (unsmob_grob (b));
+ return dynamic_cast<Spanner *> (Grob::unsmob (b));
}
Stem_info
SCM
Stem::calc_stem_info (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Direction my_dir = get_grob_direction (me);
if (!my_dir)
: 0.0);
Real height_of_my_trem = 0.0;
- Grob *trem = unsmob_grob (me->get_object ("tremolo-flag"));
+ Grob *trem = Grob::unsmob (me->get_object ("tremolo-flag"));
if (trem)
{
height_of_my_trem
bool
Stem::is_cross_staff (Grob *stem)
{
- Grob *beam = unsmob_grob (stem->get_object ("beam"));
+ Grob *beam = Grob::unsmob (stem->get_object ("beam"));
return beam && Beam::is_cross_staff (beam);
}
SCM
Stem::calc_cross_staff (SCM smob)
{
- return scm_from_bool (is_cross_staff (unsmob_grob (smob)));
+ return scm_from_bool (is_cross_staff (Grob::unsmob (smob)));
}
Grob *
Stem::flag (Grob *me)
{
- return unsmob_grob (me->get_object ("flag"));
+ return Grob::unsmob (me->get_object ("flag"));
}
/* FIXME: Too many properties */
"default-direction "
"details "
"direction "
+ "double-stem-separation "
"duration-log "
"flag "
"french-beaming "