#include "font-interface.hh" // debug output.
#endif
+#include <map>
+
+
+Beam_stem_segment::Beam_stem_segment ()
+{
+ stem_ = 0;
+ width_ = 0.0;
+ stem_x_ = 0.0;
+ rank_ = 0;
+ stem_index_ = 0;
+ dir_ = CENTER;
+}
+
+Beam_segment::Beam_segment ()
+{
+ vertical_count_ = 0;
+}
+
void
Beam::add_stem (Grob *me, Grob *s)
{
return SCM_EOL;
}
-/*
- I really enjoy spaghetti, but spaghetti should be kept on a plate
- with a little garlic and olive oil. This is too much.
+bool
+operator <(Beam_stem_segment const &a,
+ Beam_stem_segment const &b)
+{
+ return a.rank_ < b.rank_;
+}
- rewrite-me
-*/
-MAKE_SCHEME_CALLBACK (Beam, print, 1);
-SCM
-Beam::print (SCM grob)
+typedef map<int, vector<Beam_stem_segment> > Position_stem_segments_map;
+
+vector<Beam_segment>
+Beam::get_beam_segments (Grob *me_grob, Grob **common)
{
- Spanner *me = unsmob_spanner (grob);
+ Spanner *me = dynamic_cast<Spanner*> (me_grob);
extract_grob_set (me, "stems", stems);
- Grob *xcommon = common_refpoint_of_array (stems, me, X_AXIS);
+ Grob *commonx = common_refpoint_of_array (stems, me, X_AXIS);
+
+ commonx = me->get_bound (LEFT)->common_refpoint (commonx, X_AXIS);
+ commonx = me->get_bound (RIGHT)->common_refpoint (commonx, X_AXIS);
+
+ *common = commonx;
+
+ Position_stem_segments_map stem_segments;
+ Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
- xcommon = me->get_bound (LEFT)->common_refpoint (xcommon, X_AXIS);
- xcommon = me->get_bound (RIGHT)->common_refpoint (xcommon, X_AXIS);
+ for (vsize i = 0; i < stems.size (); i++)
+ {
+ Grob *stem = stems[i];
+ Real stem_width = robust_scm2double (stem->get_property ("thickness"), 1.0) * lt;
+ Real stem_x = stem->relative_coordinate (commonx, X_AXIS);
+ SCM beaming = stem->get_property ("beaming");
+ Direction d = LEFT;
+ do
+ {
+ for (SCM s = index_get_cell (beaming, d);
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ if (!scm_is_integer (scm_car (s)))
+ continue;
+
+ Beam_stem_segment seg;
+ seg.stem_ = stem;
+ seg.stem_x_ = stem_x;
+ seg.rank_ = 2 * i + (d+1)/2;
+ seg.width_ = stem_width;
+ seg.stem_index_ = i;
+ seg.dir_ = d;
+ stem_segments[scm_to_int (scm_car (s))].push_back (seg);
+ }
+ }
+ while (flip (&d) != LEFT);
+ }
+
+ Drul_array<Real> break_overshoot
+ = robust_scm2drul (me->get_property ("break-overshoot"),
+ Drul_array<Real> (-0.5, 0.0));
+
+ vector<Beam_segment> segments;
+ for (Position_stem_segments_map::const_iterator i (stem_segments.begin ());
+ i != stem_segments.end (); i++)
+ {
+ vector<Beam_stem_segment> segs = (*i).second;
+ vector_sort (segs, default_compare);
+
+ Beam_segment current;
+ current.vertical_count_ = (*i).first;
+ for (vsize j = 0; j < segs.size (); j++)
+ {
+ /*
+ event_dir == LEFT: left edge of a beamsegment.
+ */
+ Direction event_dir = LEFT;
+ do
+ {
+ Drul_array<bool> on_bound (j == 0 && event_dir==LEFT,
+ j == segs.size() - 1 && event_dir==RIGHT);
+ Drul_array<bool> inside (j > 0, j < segs.size()-1);
+ bool event = on_bound[event_dir]
+ || abs (segs[j].rank_ - segs[j+event_dir].rank_) > 1;
+
+ if (!event)
+ continue;
+
+ current.vertical_count_ = (*i).first;
+ current.horizontal_[event_dir] = segs[j].stem_x_;
+ if (segs[j].dir_ == event_dir)
+ {
+ if (on_bound[event_dir] && me->get_bound (event_dir)->break_status_dir ())
+ {
+ current.horizontal_[event_dir] += event_dir * break_overshoot[event_dir];
+ }
+ else
+ {
+ Real notehead_width =
+ Stem::duration_log (segs[j].stem_) == 1
+ ? 1.98 : 1.32; // URG.
+
+ if (inside[event_dir])
+ notehead_width = min (notehead_width,
+ fabs (segs[j+ event_dir].stem_x_
+ - segs[j].stem_x_)/2);
+
+ current.horizontal_[event_dir] += event_dir * notehead_width;
+ }
+ }
+ else
+ {
+ current.horizontal_[event_dir] += event_dir * segs[j].width_/2;
+ }
+
+ if (event_dir == RIGHT)
+ {
+ current.vertical_count_ = (*i).first;
+ segments.push_back (current);
+ current = Beam_segment();
+ }
+ }
+ while (flip (&event_dir) != LEFT);
+ }
+
+ }
+
+ return segments;
+}
+
+MAKE_SCHEME_CALLBACK(Beam, print, 1);
+SCM
+Beam::print (SCM grob)
+{
+ Spanner *me = unsmob_spanner (grob);
+ Grob *commonx = 0;
+ vector<Beam_segment> segments = get_beam_segments (me, &commonx);
Real x0, dx;
if (visible_stem_count (me))
{
- // ugh -> use commonx
- x0 = first_visible_stem (me)->relative_coordinate (xcommon, X_AXIS);
- dx = last_visible_stem (me)->relative_coordinate (xcommon, X_AXIS) - x0;
+ x0 = first_visible_stem (me)->relative_coordinate (commonx, X_AXIS);
+ dx = last_visible_stem (me)->relative_coordinate (commonx, X_AXIS) - x0;
}
else
{
- x0 = stems[0]->relative_coordinate (xcommon, X_AXIS);
- dx = stems.back ()->relative_coordinate (xcommon, X_AXIS) - x0;
+ extract_grob_set (me, "stems", stems);
+ x0 = stems[0]->relative_coordinate (commonx, X_AXIS);
+ dx = stems.back ()->relative_coordinate (commonx, X_AXIS) - x0;
}
+ Real blot = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
+
SCM posns = me->get_property ("quantized-positions");
Drul_array<Real> pos;
if (!is_number_pair (posns))
Real slope = (dy && dx) ? dy / dx : 0;
Real thick = get_thickness (me);
- Real bdy = get_beam_translation (me);
-
- SCM last_beaming = SCM_EOL;
- Real last_xposn = -1;
- Real last_stem_width = -1;
-
- Real gap_length = robust_scm2double (me->get_property ("gap"), 0.0);
+ Real beam_dy = get_beam_translation (me);
+
Stencil the_beam;
- Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
-
- for (vsize i = 0; i <= stems.size (); i++)
+ for (vsize i = 0; i < segments.size (); i ++)
{
- Grob *stem = (i < stems.size ()) ? stems[i] : 0;
+ Stencil b = Lookup::beam (slope, segments[i].horizontal_.length (), thick, blot);
- SCM this_beaming = stem ? stem->get_property ("beaming") : SCM_EOL;
- Real xposn = stem ? stem->relative_coordinate (xcommon, X_AXIS) : 0.0;
- Real stem_width = stem ? robust_scm2double (stem->get_property ("thickness"), 1.0) * lt : 0;
- Direction stem_dir = stem ? to_dir (stem->get_property ("direction")) : CENTER;
- /*
- We do the space left of ST, with lfliebertjes pointing to the
- right from the left stem, and rfliebertjes pointing left from
- right stem.
- */
- SCM left = (i > 0) ? scm_cdr (last_beaming) : SCM_EOL;
- SCM right = stem ? scm_car (this_beaming) : SCM_EOL;
-
- vector<int> full_beams;
- vector<int> lfliebertjes;
- vector<int> rfliebertjes;
-
- for (SCM s = left;
- scm_is_pair (s); s = scm_cdr (s))
- {
- int b = scm_to_int (scm_car (s));
- if (scm_c_memq (scm_car (s), right) != SCM_BOOL_F)
- full_beams.push_back (b);
- else
- lfliebertjes.push_back (b);
- }
- for (SCM s = right;
- scm_is_pair (s); s = scm_cdr (s))
- {
- int b = scm_to_int (scm_car (s));
- if (scm_c_memq (scm_car (s), left) == SCM_BOOL_F)
- rfliebertjes.push_back (b);
- }
-
- Drul_array<Real> break_overshoot
- = robust_scm2drul (me->get_property ("break-overshoot"),
- Drul_array<Real> (-0.5, 0.0));
-
- Real w = (i > 0 && stem)
- ? (xposn - last_xposn)
- : break_overshoot[ (i == 0) ? LEFT : RIGHT];
-
- Real stem_offset = 0.0;
- if (i > 0)
- {
- w += last_stem_width / 2;
- stem_offset = -last_stem_width / 2;
- }
-
- if (stem)
- w += stem_width / 2;
-
- Real blot = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
- Stencil whole = Lookup::beam (slope, w, thick, blot);
- Stencil gapped;
-
- int gap_count = 0;
- if (scm_is_number (me->get_property ("gap-count")))
- {
- gap_count = scm_to_int (me->get_property ("gap-count"));
- gapped = Lookup::beam (slope, w - 2 * gap_length, thick, blot);
-
- vector_sort (full_beams, default_compare);
- if (stem_dir == UP)
- reverse (full_beams);
- }
-
- int k = 0;
- for (vsize j = full_beams.size (); j--;)
- {
- Stencil b (whole);
-
- if (k++ < gap_count)
- {
- b = gapped;
- b.translate_axis (gap_length, X_AXIS);
- }
- b.translate_axis (last_xposn - x0 + stem_offset, X_AXIS);
- b.translate_axis (slope * (last_xposn - x0) + bdy * full_beams[j], Y_AXIS);
-
- the_beam.add_stencil (b);
- }
-
- if (lfliebertjes.size () || rfliebertjes.size ())
- {
- Real nw_f;
-
- if (stem)
- {
- int t = Stem::duration_log (stem);
- // ugh. hardcoded.
- if (t == 1)
- nw_f = 1.98;
- else
- nw_f = 1.32;
- }
- else
- nw_f = break_overshoot[RIGHT] / 2;
-
- /* Half beam should be one note-width,
- but let's make sure two half-beams never touch */
- Real lw = nw_f;
- Real rw = nw_f;
- if (i > 0)
- rw = min (nw_f, ((xposn - last_xposn) / 2));
- else
- {
- if (me->get_bound (LEFT)->break_status_dir ())
- rw = xposn - me->get_bound (LEFT)->extent (xcommon, X_AXIS)[RIGHT]
- + break_overshoot[LEFT];
- else
- rw = 1.0; // ugh.
- }
-
- if (stem)
- lw = min (nw_f, ((xposn - last_xposn) / 2));
- else
- {
- lw = me->get_bound (RIGHT)->relative_coordinate (xcommon, X_AXIS)
- - last_xposn
- + break_overshoot[RIGHT];
- }
- rw += stem_width / 2;
- lw += last_stem_width / 2;
-
- Stencil rhalf = Lookup::beam (slope, rw, thick, blot);
- Stencil lhalf = Lookup::beam (slope, lw, thick, blot);
- for (vsize j = lfliebertjes.size (); j--;)
- {
- Stencil b (lhalf);
- b.translate_axis (last_xposn - x0 - last_stem_width /2,
- X_AXIS);
- b.translate_axis (slope * (last_xposn - x0)
- + bdy * lfliebertjes[j],
- Y_AXIS);
- the_beam.add_stencil (b);
- }
- for (vsize j = rfliebertjes.size (); j--;)
- {
- Stencil b (rhalf);
- b.translate_axis (xposn - x0 - rw + stem_width / 2, X_AXIS);
- b.translate_axis (slope * (xposn - x0 - rw)
- + bdy * rfliebertjes[j], Y_AXIS);
- the_beam.add_stencil (b);
- }
- }
-
- last_xposn = xposn;
- last_stem_width = stem_width;
- last_beaming = this_beaming;
+ b.translate_axis (segments[i].horizontal_[LEFT], X_AXIS);
+ b.translate_axis (slope * (segments[i].horizontal_[LEFT] - x0)
+ + beam_dy * segments[i].vertical_count_, Y_AXIS);
+ the_beam.add_stencil (b);
}
-
- the_beam.translate_axis (x0 - me->relative_coordinate (xcommon, X_AXIS),
- X_AXIS);
- the_beam.translate_axis (pos[LEFT], Y_AXIS);
-
+
#if (DEBUG_BEAM_SCORING)
SCM quant_score = me->get_property ("quant-score");
SCM debug = me->layout ()->lookup_variable (ly_symbol2scm ("debug-beam-scoring"));
if (to_boolean (debug) && scm_is_string (quant_score))
{
+ extract_grob_set (me, "stems", stems);
/*
This code prints the demerits for each beam. Perhaps this
}
#endif
+ the_beam.translate_axis (pos[LEFT], Y_AXIS);
+ the_beam.translate_axis (-me->relative_coordinate (commonx, X_AXIS), X_AXIS);
return the_beam.smobbed_copy ();
}
-
+
Direction
Beam::get_default_dir (Grob *me)
{
projects / lilypond.git / commitdiff