/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
LilyPond is free software: you can redistribute it and/or modify
Real beam_thickness = get_beam_thickness (me);
Real fract = robust_scm2double (me->get_property ("length-fraction"), 1.0);
- Real beam_translation = beam_count < 4
- ? (2 * staff_space + line - beam_thickness) / 2.0
- : (3 * staff_space + line - beam_thickness) / 3.0;
-
- return fract * beam_translation;
+ /*
+ if fract != 1.0, as is the case for grace notes, we want the gap
+ to decrease too. To achieve this, we divide the thickness by
+ fract */
+ return (beam_count < 4
+ ? (2 * staff_space * fract + line * fract - beam_thickness) / 2.0
+ : (3 * staff_space * fract + line * fract - beam_thickness) / 3.0);
}
/* Maximum beam_count. */
SCM
Beam::calc_normal_stems (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
extract_grob_set (me, "stems", stems);
SCM val = Grob_array::make_array ();
- Grob_array *ga = unsmob_grob_array (val);
+ Grob_array *ga = unsmob<Grob_array> (val);
for (vsize i = 0; i < stems.size (); i++)
if (Stem::is_normal_stem (stems[i]))
ga->add (stems[i]);
SCM
Beam::calc_direction (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
/* Beams with less than 2 two stems don't make much sense, but could happen
when you do
placing this here avoids warnings downstream */
if (heads.size())
{
- if (heads[0]->get_property ("style") == ly_symbol2scm ("kievan"))
+ if (scm_is_eq (heads[0]->get_property ("style"),
+ ly_symbol2scm ("kievan")))
{
if (dir == CENTER)
dir = DOWN;
for (SCM s = scm_car (right_beaming); scm_is_pair (s); s = scm_cdr (s))
{
int k = -right_dir * scm_to_int (scm_car (s)) + i;
- if (scm_c_memq (scm_from_int (k), left_beaming) != SCM_BOOL_F)
+ if (scm_is_true (ly_memv (scm_from_int (k), left_beaming)))
count++;
}
SCM
Beam::calc_beaming (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
extract_grob_set (me, "stems", stems);
{
/* ugh, this has a side-effect that we need to ensure that
Stem #'beaming is correct */
- Grob *me_grob = unsmob_grob (smob);
+ Grob *me_grob = unsmob<Grob> (smob);
(void) me_grob->get_property ("beaming");
Spanner *me = dynamic_cast<Spanner *> (me_grob);
SCM
Beam::calc_x_positions (SCM smob)
{
- Spanner *me = unsmob_spanner (smob);
+ Spanner *me = unsmob<Spanner> (smob);
SCM segments = me->get_property ("beam-segments");
Interval x_positions;
x_positions.set_empty ();
SCM
Beam::print (SCM grob)
{
- Spanner *me = unsmob_spanner (grob);
+ Spanner *me = unsmob<Spanner> (grob);
/*
TODO - mild code dup for all the commonx calls.
Some use just common_refpoint_of_array, some (in print and
Direction stem_dir = stems.size () ? to_dir (stems[0]->get_property ("direction")) : UP;
- Stencil score = *unsmob_stencil (Text_interface::interpret_markup
+ Stencil score = *unsmob<Stencil> (Text_interface::interpret_markup
(me->layout ()->self_scm (), properties, annotation));
if (!score.is_empty ())
{
Grob *stem = stems[i];
- Interval head_extents = Stem::head_positions (stem);
- if (!head_extents.is_empty ())
+ Interval head_extents;
+ if (Stem::head_count (stem))
{
- head_extents[LEFT] += -1;
- head_extents[RIGHT] += 1;
+ head_extents = Stem::head_positions (stem);
+ head_extents.widen (1);
head_extents *= staff_space * 0.5;
/*
SCM
Beam::calc_stem_shorten (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
/*
shortening looks silly for x staff beams
int beam_count = get_beam_count (me);
SCM shorten_list = me->get_property ("beamed-stem-shorten");
- if (shorten_list == SCM_EOL)
+ if (scm_is_null (shorten_list))
return scm_from_int (0);
Real staff_space = Staff_symbol_referencer::staff_space (me);
SCM
Beam::quanting (SCM smob, SCM ys_scm, SCM align_broken_intos)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
Drul_array<Real> ys = robust_scm2drul (ys_scm, Drul_array<Real> (infinity_f, -infinity_f));
bool cbs = to_boolean (align_broken_intos);
for (SCM s = scm_car (beaming); scm_is_pair (s); s = scm_cdr (s))
{
- if (scm_c_memq (scm_car (s), scm_cdr (beaming)) != SCM_BOOL_F)
+ if (scm_is_true (ly_memv (scm_car (s), scm_cdr (beaming))))
l.add_point (scm_to_int (scm_car (s)));
}
SCM
Beam::set_stem_lengths (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = unsmob<Grob> (smob);
/* trigger callbacks. */
(void) me->get_property ("direction");
{
Grob *stem = stems[i];
SCM beaming_prop = stem->get_property ("beaming");
- if (beaming_prop == SCM_EOL
- || index_get_cell (beaming_prop, d) == SCM_EOL)
+ if (scm_is_null (beaming_prop)
+ || scm_is_null (index_get_cell (beaming_prop, d)))
{
int count = beaming->beamlet_count (i, d);
if (i > 0
SCM
Beam::rest_collision_callback (SCM smob, SCM prev_offset)
{
- Grob *rest = unsmob_grob (smob);
+ if (!scm_is_number (prev_offset))
+ prev_offset = SCM_INUM0;
+
+ Grob *rest = unsmob<Grob> (smob);
if (scm_is_number (rest->get_property ("staff-position")))
- return scm_from_int (0);
+ return prev_offset;
- Real offset = robust_scm2double (prev_offset, 0.0);
+ Grob *stem = unsmob<Grob> (rest->get_object ("stem"));
- Grob *st = unsmob_grob (rest->get_object ("stem"));
- Grob *stem = st;
if (!stem)
- return scm_from_double (0.0);
- Grob *beam = unsmob_grob (stem->get_object ("beam"));
+ return prev_offset;
+
+ Grob *beam = unsmob<Grob> (stem->get_object ("beam"));
if (!beam
- || !Beam::has_interface (beam)
+ || !has_interface<Beam> (beam)
|| !Beam::normal_stem_count (beam))
- return scm_from_double (0.0);
+ return prev_offset;
Grob *common_y = rest->common_refpoint (beam, Y_AXIS);
+ (beam_count - 1) * beam_translation;
Real beam_y = stem_y - d * height_of_my_beams;
+ Real offset = robust_scm2double (prev_offset, 0.0);
Interval rest_extent = rest->extent (rest, Y_AXIS);
- rest_extent.translate (offset + rest->get_parent (Y_AXIS)->relative_coordinate (common_y, Y_AXIS));
+ rest_extent.translate (offset + rest->parent_relative (common_y, Y_AXIS));
Real rest_dim = rest_extent[d];
Real minimum_distance
/*
Estimate the position of a rest under a beam,
- as the average position of its neighboring heads.
+ using the average position of its neighboring heads.
*/
MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Beam, pure_rest_collision_callback, 4, 1, "");
SCM
SCM, /* end */
SCM prev_offset)
{
- Real previous = robust_scm2double (prev_offset, 0.0);
+ if (!scm_is_number (prev_offset))
+ prev_offset = SCM_INUM0;
- Grob *me = unsmob_grob (smob);
- Grob *stem = unsmob_grob (me->get_object ("stem"));
+ Grob *me = unsmob<Grob> (smob);
+ Grob *stem = unsmob<Grob> (me->get_object ("stem"));
if (!stem)
- return scm_from_double (previous);
- Grob *beam = unsmob_grob (stem->get_object ("beam"));
+ return prev_offset;
+ Grob *beam = unsmob<Grob> (stem->get_object ("beam"));
if (!beam
|| !Beam::normal_stem_count (beam)
|| !is_direction (beam->get_property_data ("direction")))
- return scm_from_double (previous);
+ return prev_offset;
Real ss = Staff_symbol_referencer::staff_space (me);
- /*
- This gives the extrema of rest positions.
- Even with noteheads on ledgers, beams typically remain within the staff,
- and push rests at most one staff-space (2 positions) from the staff.
- */
- Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
- Interval rest_max_pos = staff ? Staff_symbol::line_span (staff) : Interval (0.0, 0.0);
- rest_max_pos.widen (2);
-
extract_grob_set (beam, "stems", stems);
vector<Grob *> my_stems;
Grob *right;
if (idx == (vsize) - 1 || my_stems.size () == 1)
- return scm_from_double (previous);
+ return prev_offset;
else if (idx == 0)
left = right = my_stems[1];
else if (idx == my_stems.size () - 1)
right = my_stems[idx + 1];
}
- /* In stems with several heads, use the one closest to the beam. */
+ /* Estimate the closest beam to be four positions away from the heads, */
Direction beamdir = get_grob_direction (beam);
- Real shift = min (max ( (Stem::head_positions (left)[beamdir]
- + Stem::head_positions (right)[beamdir]) / 2.0,
- rest_max_pos[DOWN]),
- rest_max_pos[UP]
- ) * ss / 2.0
- - previous;
-
- // So that ceil below kicks in for rests that would otherwise brush
- // up against a beam quanted to a ledger line, add a bit of space
- // between the beam and the rest.
- shift += (0.01 * beamdir);
-
- /* Always move by a whole number of staff spaces */
- shift = ceil (fabs (shift / ss)) * ss * sign (shift);
-
- return scm_from_double (previous + shift);
+ Real beam_pos = (Stem::head_positions (left)[beamdir]
+ + Stem::head_positions (right)[beamdir]) / 2.0
+ + 4.0 * beamdir; // four staff-positions
+ /* and that the closest beam never crosses staff center by more than two positions */
+ beam_pos = max (-2.0, beam_pos * beamdir) * beamdir;
+
+ Real minimum_distance
+ = ss * (robust_scm2double (stem->get_property ("stemlet-length"), 0.0)
+ + robust_scm2double (me->get_property ("minimum-distance"), 0.0));
+ Real offset = beam_pos * ss / 2.0
+ - minimum_distance * beamdir
+ - me->extent (me, Y_AXIS)[beamdir];
+ Real previous = robust_scm2double (prev_offset, 0.0);
+
+ /* Always move by a whole number of staff spaces, always away from the beam */
+ offset = floor (min (0.0, (offset - previous) / ss * beamdir))
+ * ss * beamdir + previous;
+
+ return scm_from_double (offset);
}
bool
SCM
Beam::calc_cross_staff (SCM smob)
{
- return scm_from_bool (is_cross_staff (unsmob_grob (smob)));
+ return scm_from_bool (is_cross_staff (unsmob<Grob> (smob)));
}
int
projects / lilypond.git / blobdiff