/*
- slur-quanting.cc -- Score based slur formatting
+ slur-scoring.cc -- Score based slur formatting
source file of the GNU LilyPond music typesetter
#include <math.h>
-#include "accidental-interface.hh"
+#include "libc-extension.hh"
+#include "slur-configuration.hh"
+#include "slur-scoring.hh"
#include "beam.hh"
#include "directional-element-interface.hh"
#include "group-interface.hh"
-#include "libc-extension.hh"
#include "lily-guile.hh"
#include "slur.hh"
#include "note-column.hh"
#include "stem.hh"
#include "warn.hh"
#include "paper-column.hh"
+#include "accidental-interface.hh"
/*
TODO:
- curve around flag for y coordinate
- - this file is a big mess, clean it up
+ - this file is a mess, clean it up
- short-cut: try a smaller region first.
- optimize.
*/
-
-struct Slur_score
-{
- Drul_array<Offset> attachment_;
- Real score_;
- Bezier curve_;
-
-#if DEBUG_SLUR_QUANTING
- String score_card_;
-#endif
-
- Slur_score ()
- {
- score_ = 0.0;
- }
-};
-
-struct Slur_score_parameters
-{
- int region_size_;
- Real head_encompass_penalty_;
- Real stem_encompass_penalty_;
- Real closeness_factor_;
- Real edge_attraction_factor_;
- Real same_slope_penalty_;
- Real steeper_slope_factor_;
- Real non_horizontal_penalty_;
- Real max_slope_;
- Real max_slope_factor_;
- Real extra_object_collision_;
- Real accidental_collision_;
- Real free_slur_distance_;
- Real free_head_distance_;
- Real extra_encompass_free_distance_;
- Real edge_slope_exponent_;
- Real head_slur_distance_max_ratio_;
- Real head_slur_distance_factor_;
-};
-
-
-
-struct Extra_collision_info
-{
- Real idx_;
- Box extents_;
- Real penalty_;
- Grob * grob_;
-
- Extra_collision_info (Grob *g, Real idx, Interval x, Interval y, Real p)
- {
- idx_ = idx;
- extents_[X_AXIS] = x;
- extents_[Y_AXIS] = y;
- penalty_ = p;
- grob_ = g;
- }
- Extra_collision_info ()
- {
- idx_ = 0.0;
- penalty_ = 0.;
- grob_ = 0;
- }
-};
-
-
-struct Encompass_info
-{
- Real x_;
- Real stem_;
- Real head_;
- Encompass_info ()
- {
- x_ = 0.0;
- stem_ = 0.0;
- head_ = 0.0;
- }
- Real get_point (Direction dir) const
- {
- Interval y;
- y.add_point (stem_);
- y.add_point (head_);
- return y[dir];
- }
-};
-
-struct Bound_info
-{
- Box stem_extent_;
- Direction stem_dir_;
- Item *bound_;
- Grob *note_column_;
- Grob *slur_head_;
- Grob *staff_;
- Grob *stem_;
- Interval slur_head_extent_;
- Real staff_space_;
-
- Bound_info ()
- {
- stem_ = 0;
- staff_ = 0;
- slur_head_ = 0;
- stem_dir_ = CENTER;
- note_column_ = 0;
- }
-};
-
-struct Slur_score_state
-{
- Spanner *slur_;
- Grob *common_[NO_AXES];
- bool valid_;
- bool edge_has_beams_;
- bool is_broken_;
- bool has_same_beam_;
-
- Real musical_dy_;
- Link_array<Grob> columns_;
- Array<Encompass_info> encompass_infos_;
- Array<Extra_collision_info> extra_encompass_infos_;
-
- Direction dir_;
- Slur_score_parameters parameters_;
- Drul_array<Bound_info> extremes_;
- Drul_array<Offset> base_attachments_;
- Array<Slur_score> *scores_;
- Real staff_space_;
- Real thickness_;
-
- Slur_score_state();
- ~Slur_score_state();
-};
+struct Slur_score_state;
Slur_score_state::Slur_score_state()
{
slur_ = 0;
common_[X_AXIS] = 0;
common_[Y_AXIS] = 0;
- scores_ = 0;
}
Slur_score_state::~Slur_score_state ()
{
- delete scores_;
+ junk_pointers (configurations_);
}
-static Array<Extra_collision_info> get_extra_encompass_infos (Slur_score_state const &state);
-static void score_extra_encompass (Slur_score_state const&);
-static void score_slopes (Slur_score_state const&);
-static void score_edges (Slur_score_state const&);
-static void score_encompass (Slur_score_state const&);
-static Bezier avoid_staff_line (Slur_score_state const&,
- Bezier bez);
-static Encompass_info get_encompass_info (Slur_score_state const&, Grob *col);
-static Bezier get_bezier (Slur_score_state const&,
- Drul_array<Offset>,
- Real r_0, Real h_inf);
-static Direction get_default_dir (Grob *me);
-
-static void set_end_points (Grob *);
-static Real broken_trend_y (Slur_score_state const&, Direction dir);
-static Drul_array<Bound_info> get_bound_info (Slur_score_state const&);
-
-static void generate_curves (Slur_score_state const&);
-static Array<Slur_score> *enumerate_attachments (Slur_score_state const&,
- Drul_array<Real> end_ys);
-static Drul_array<Offset> get_base_attachments(Slur_score_state const&);
-static Drul_array<Real> get_y_attachment_range(Slur_score_state const&);
-
-
Real
get_detail (SCM alist, SCM sym)
{
SCM entry = scm_assq (sym, alist);
return robust_scm2double (scm_is_pair (entry)
- ? ly_cdr (entry)
+ ? scm_cdr (entry)
: SCM_EOL,
0.0);
}
void
-init_score_param (Grob *me,
- Slur_score_parameters *score_param)
+Slur_score_parameters::fill (Grob *me)
{
SCM details = me->get_property ("slur-details");
- score_param->region_size_
+ region_size_
= (int) get_detail (details, ly_symbol2scm ("region-size"));
- score_param->head_encompass_penalty_
+ head_encompass_penalty_
= get_detail (details, ly_symbol2scm ("head-encompass-penalty"));
- score_param->stem_encompass_penalty_
+ stem_encompass_penalty_
= get_detail (details, ly_symbol2scm ("stem-encompass-penalty"));
- score_param->closeness_factor_
+ closeness_factor_
= get_detail (details, ly_symbol2scm ("closeness-factor"));
- score_param->edge_attraction_factor_
+ edge_attraction_factor_
= get_detail (details, ly_symbol2scm ("edge-attraction-factor"));
- score_param->same_slope_penalty_
+ same_slope_penalty_
= get_detail (details, ly_symbol2scm ("same-slope-penalty"));
- score_param->steeper_slope_factor_
+ steeper_slope_factor_
= get_detail (details, ly_symbol2scm ("steeper-slope-factor"));
- score_param->non_horizontal_penalty_
+ non_horizontal_penalty_
= get_detail (details, ly_symbol2scm ("non-horizontal-penalty"));
- score_param->max_slope_
+ max_slope_
= get_detail (details, ly_symbol2scm ("max-slope"));
- score_param->max_slope_factor_
+ max_slope_factor_
= get_detail (details, ly_symbol2scm ("max-slope-factor"));
- score_param->free_head_distance_
+ free_head_distance_
= get_detail (details, ly_symbol2scm ("free-head-distance"));
- score_param->extra_object_collision_
+ absolute_closeness_measure_
+ = get_detail (details, ly_symbol2scm ("absolute-closeness-measure"));
+ extra_object_collision_
= get_detail (details, ly_symbol2scm ("extra-object-collision"));
- score_param->accidental_collision_
+ accidental_collision_
= get_detail (details, ly_symbol2scm ("accidental-collision"));
- score_param->extra_encompass_free_distance_
+ extra_encompass_free_distance_
= get_detail (details, ly_symbol2scm ("extra-encompass-free-distance"));
- score_param->head_slur_distance_factor_
+ head_slur_distance_factor_
= get_detail (details, ly_symbol2scm ("head-slur-distance-factor"));
- score_param->head_slur_distance_max_ratio_
+ head_slur_distance_max_ratio_
= get_detail (details, ly_symbol2scm ("head-slur-distance-max-ratio"));
- score_param->free_slur_distance_
+ free_slur_distance_
= get_detail (details, ly_symbol2scm ("free-slur-distance"));
- score_param->edge_slope_exponent_
+ edge_slope_exponent_
= get_detail (details, ly_symbol2scm ("edge-slope-exponent"));
}
-
Real
broken_trend_y (Slur_score_state const &state, Direction hdir)
{
return by;
Grob *common_next_system = common_mother->broken_intos_[common_j];
-
-
-
- SCM last_point = ly_car (scm_last_pair (neighbor->get_property ("control-points")));
-
+ SCM last_point = scm_car (scm_last_pair (neighbor->get_property ("control-points")));
- return scm_to_double (ly_cdr (last_point))
+ return scm_to_double (scm_cdr (last_point))
+ neighbor->relative_coordinate (common_next_system, Y_AXIS);
}
return by;
/*
-copy slur dir forwards across line break.
+ copy slur dir forwards across line break.
*/
void
-set_next_direction (Slur_score_state const &state)
+Slur_score_state::set_next_direction ()
{
- if (state.extremes_[RIGHT].note_column_)
+ if (extremes_[RIGHT].note_column_)
return;
- if (Spanner *mother = dynamic_cast<Spanner*> (state.slur_->original_))
+ if (Spanner *mother = dynamic_cast<Spanner*> (slur_->original_))
{
- int k = broken_spanner_index (state.slur_);
+ int k = broken_spanner_index (slur_);
int j = k + 1;
if (j < 0 || j >= mother->broken_intos_.size ())
return;
Grob *neighbor = mother->broken_intos_[j];
- set_grob_direction (neighbor, state.dir_);
+ set_grob_direction (neighbor, dir_);
}
}
Encompass_info
-get_encompass_info (Slur_score_state const &state,
- Grob *col)
+Slur_score_state::get_encompass_info (Grob *col) const
{
Grob *stem = unsmob_grob (col->get_property ("stem"));
Encompass_info ei;
if (!stem)
{
programming_error ("No stem for note column?");
- ei.x_ = col->relative_coordinate (state.common_[X_AXIS], X_AXIS);
- ei.head_ = ei.stem_ = col->extent (state.common_[Y_AXIS],
- Y_AXIS)[state.dir_];
+ ei.x_ = col->relative_coordinate (common_[X_AXIS], X_AXIS);
+ ei.head_ = ei.stem_ = col->extent (common_[Y_AXIS],
+ Y_AXIS)[dir_];
return ei;
}
Direction stem_dir = get_grob_direction (stem);
if (Grob *head = Note_column::first_head (col))
- ei.x_ = head->extent (state.common_[X_AXIS], X_AXIS).center ();
+ ei.x_ = head->extent (common_[X_AXIS], X_AXIS).center ();
else
- ei.x_ = col->extent (state.common_[X_AXIS], X_AXIS).center ();
+ ei.x_ = col->extent (common_[X_AXIS], X_AXIS).center ();
- Grob *h = Stem::extremal_heads (stem)[Direction (state.dir_)];
+ Grob *h = Stem::extremal_heads (stem)[Direction (dir_)];
if (!h)
{
- ei.head_ = ei.stem_ = col->extent (state.common_[Y_AXIS], Y_AXIS)[state.dir_];
+ ei.head_ = ei.stem_ = col->extent (common_[Y_AXIS], Y_AXIS)[dir_];
return ei;
}
- ei.head_ = h->extent (state.common_[Y_AXIS], Y_AXIS)[state.dir_];
+ ei.head_ = h->extent (common_[Y_AXIS], Y_AXIS)[dir_];
- if ((stem_dir == state.dir_)
+ if ((stem_dir == dir_)
&& !stem->extent (stem, Y_AXIS).is_empty ())
{
- ei.stem_ = stem->extent (state.common_[Y_AXIS], Y_AXIS)[state.dir_];
+ ei.stem_ = stem->extent (common_[Y_AXIS], Y_AXIS)[dir_];
if (Grob *b = Stem::get_beam (stem))
ei.stem_ += stem_dir * 0.5 * Beam::get_thickness (b);
- Interval x = stem->extent (state.common_[X_AXIS], X_AXIS);
+ Interval x = stem->extent (common_[X_AXIS], X_AXIS);
ei.x_ = x.is_empty ()
- ? stem->relative_coordinate (state.common_[X_AXIS], X_AXIS)
+ ? stem->relative_coordinate (common_[X_AXIS], X_AXIS)
: x.center ();
}
else
}
-Direction
-get_default_dir (Grob*me)
-{
- Link_array<Grob> encompasses
- = Pointer_group_interface__extract_grobs (me, (Grob*) 0, "note-columns");
-
- Direction d = DOWN;
- for (int i= 0; i < encompasses.size (); i ++)
- {
- if (Note_column::dir (encompasses[i]) < 0)
- {
- d = UP;
- break;
- }
- }
- return d;
-}
-
-
-
-MAKE_SCHEME_CALLBACK (Slur, after_line_breaking,1);
-SCM
-Slur::after_line_breaking (SCM smob)
-{
- Spanner *me = dynamic_cast<Spanner*> (unsmob_grob (smob));
- if (!scm_ilength (me->get_property ("note-columns")))
- {
- me->suicide ();
- return SCM_UNSPECIFIED;
- }
-
- if (!get_grob_direction (me))
- set_grob_direction (me, get_default_dir (me));
- if (scm_ilength (me->get_property ("control-points")) < 4)
- set_end_points (me);
-
- return SCM_UNSPECIFIED;
-}
Drul_array<Bound_info>
-get_bound_info (Slur_score_state const &state)
+Slur_score_state::get_bound_info () const
{
Drul_array<Bound_info> extremes;
Direction d = LEFT;
- Direction dir = state.dir_;
+ Direction dir = dir_;
do
{
- extremes[d].bound_ = state.slur_->get_bound (d);
+ extremes[d].bound_ = slur_->get_bound (d);
if (Note_column::has_interface (extremes[d].bound_))
{
extremes[d].note_column_ = extremes[d].bound_;
extremes[d].stem_ = Note_column::get_stem (extremes[d].note_column_);
extremes[d].stem_dir_ = get_grob_direction (extremes[d].stem_);
extremes[d].stem_extent_[X_AXIS]
- = extremes[d].stem_->extent (state.common_[X_AXIS], X_AXIS);
+ = extremes[d].stem_->extent (common_[X_AXIS], X_AXIS);
extremes[d].stem_extent_[Y_AXIS]
- = extremes[d].stem_->extent (state.common_[Y_AXIS], Y_AXIS);
+ = extremes[d].stem_->extent (common_[Y_AXIS], Y_AXIS);
extremes[d].slur_head_
= Stem::extremal_heads (extremes[d].stem_)[dir];
if (!extremes[d].slur_head_
if (extremes[d].slur_head_)
extremes[d].slur_head_extent_
- = extremes[d].slur_head_->extent (state.common_[X_AXIS], X_AXIS);
+ = extremes[d].slur_head_->extent (common_[X_AXIS], X_AXIS);
extremes[d].staff_ = Staff_symbol_referencer
::get_staff_symbol (extremes[d].stem_);
}
void
-fill_scoring_state (Grob *me, Slur_score_state *state_ptr)
+Slur_score_state::fill (Grob *me)
{
- Slur_score_state &state = *state_ptr;
- state.slur_ = dynamic_cast<Spanner*> (me);
- state.columns_
+ slur_ = dynamic_cast<Spanner*> (me);
+ columns_
= Pointer_group_interface__extract_grobs (me, (Grob *) 0, "note-columns");
- if (state.columns_.is_empty ())
+ if (columns_.is_empty ())
{
me->suicide ();
return ;
}
- state.staff_space_ = Staff_symbol_referencer::staff_space (me);
- Real lt = me->get_paper ()->get_dimension (ly_symbol2scm ("linethickness"));
- state.thickness_ = robust_scm2double (me->get_property ("thickness"), 1.0) * lt;
+ staff_space_ = Staff_symbol_referencer::staff_space (me);
+ Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
+ thickness_ = robust_scm2double (me->get_property ("thickness"), 1.0) * lt;
- state.dir_ = get_grob_direction (me);
- init_score_param (me, &state.parameters_);
+ dir_ = get_grob_direction (me);
+ parameters_.fill (me);
SCM eltlist = me->get_property ("note-columns");
SCM extra_list = me->get_property ("encompass-objects");
for (int i = X_AXIS; i < NO_AXES; i++)
{
Axis a = (Axis)i;
- state.common_[a] = common_refpoint_of_list (eltlist, me, a);
- state.common_[a] = common_refpoint_of_list (extra_list, state.common_[a], a);
+ common_[a] = common_refpoint_of_list (eltlist, me, a);
+ common_[a] = common_refpoint_of_list (extra_list, common_[a], a);
Direction d = LEFT;
do {
- state.common_[a] = state.common_[a]->common_refpoint (sp->get_bound (d), a);
+ /*
+ If bound is not in note-columns, we don't want to know about
+ its Y-position
+ */
+ if (a != Y_AXIS)
+ common_[a] = common_[a]->common_refpoint (sp->get_bound (d), a);
}
while (flip (&d) != LEFT);
}
- state.extremes_ = get_bound_info (state);
- state.is_broken_ = (!state.extremes_[LEFT].note_column_
- || !state.extremes_[RIGHT].note_column_);
+ extremes_ = get_bound_info ();
+ is_broken_ = (!extremes_[LEFT].note_column_
+ || !extremes_[RIGHT].note_column_);
+ has_same_beam_ =
+ (extremes_[LEFT].stem_ && extremes_[RIGHT].stem_
+ && Stem::get_beam (extremes_[LEFT].stem_) == Stem::get_beam (extremes_[RIGHT].stem_));
- state.base_attachments_ = get_base_attachments (state);
+ base_attachments_ = get_base_attachments ();
Drul_array<Real> end_ys
- = get_y_attachment_range (state);
+ = get_y_attachment_range ();
- state.scores_ = enumerate_attachments (state, end_ys);
- for (int i = 0; i < state.columns_.size (); i++)
- state.encompass_infos_.push (get_encompass_info (state, state.columns_[i]));
+ configurations_ = enumerate_attachments ( end_ys);
+ for (int i = 0; i < columns_.size (); i++)
+ encompass_infos_.push (get_encompass_info ( columns_[i]));
- state.extra_encompass_infos_ = get_extra_encompass_infos (state);
- state.valid_ = true;
+ extra_encompass_infos_ = get_extra_encompass_infos ();
+ valid_ = true;
- state.musical_dy_ = 0.0;
+ musical_dy_ = 0.0;
Direction d = LEFT;
do
{
- if (!state.is_broken_)
- state.musical_dy_ += d
- * state.extremes_[d].slur_head_->relative_coordinate (state.common_[Y_AXIS], Y_AXIS);
+ if (!is_broken_)
+ musical_dy_ += d
+ * extremes_[d].slur_head_->relative_coordinate (common_[Y_AXIS], Y_AXIS);
}
while (flip (&d) != LEFT);
- state.edge_has_beams_
- = (state.extremes_[LEFT].stem_ && Stem::get_beam (state.extremes_[LEFT].stem_))
- || (state.extremes_[RIGHT].stem_ && Stem::get_beam (state.extremes_[RIGHT].stem_));
+ edge_has_beams_
+ = (extremes_[LEFT].stem_ && Stem::get_beam (extremes_[LEFT].stem_))
+ || (extremes_[RIGHT].stem_ && Stem::get_beam (extremes_[RIGHT].stem_));
- state.has_same_beam_ =
- (state.extremes_[LEFT].stem_ && state.extremes_[RIGHT].stem_
- && Stem::get_beam (state.extremes_[LEFT].stem_) == Stem::get_beam (state.extremes_[RIGHT].stem_));
- set_next_direction (state);
+ set_next_direction ();
- if (state.is_broken_)
- state.musical_dy_ = 0.0;
+ if (is_broken_)
+ musical_dy_ = 0.0;
}
void
-set_end_points (Grob *me)
+set_slur_control_points (Grob *me)
{
Slur_score_state state;
- fill_scoring_state (me, &state);
+ state.fill (me);
if (!state.valid_)
return;
- generate_curves (state);
- score_edges (state);
- score_slopes (state);
- score_encompass (state);
- score_extra_encompass (state);
+ state.generate_curves ();
+ Bezier best (state.get_best_curve());
+
+
+ SCM controls = SCM_EOL;
+ for (int i = 4; i--;)
+ {
+ Offset o = best.control_[i]
+ - Offset (me->relative_coordinate (state.common_[X_AXIS], X_AXIS),
+ me->relative_coordinate (state.common_[Y_AXIS], Y_AXIS));
+ controls = scm_cons (ly_offset2scm (o), controls);
+ }
+ me->set_property ("control-points", controls);
+}
+
+
+Bezier
+Slur_score_state::get_best_curve ()
+{
+ for (int i = 0; i < configurations_.size (); i++)
+ {
+ configurations_[i]->score (*this);
+ }
Real opt = 1e6;
int opt_idx = -1;
- for (int i = 0; i < state.scores_->size (); i++)
+ for (int i = 0; i < configurations_.size (); i++)
{
- if ((*state.scores_)[i].score_ < opt)
+ if (configurations_[i]->score_ < opt)
{
- opt = (*state.scores_)[i].score_;
+ opt = configurations_[i]->score_;
opt_idx = i;
}
}
-#if DEBUG_SLUR_QUANTING
- SCM inspect_quants = me->get_property ("inspect-quants");
- if (to_boolean (me->get_paper ()
+#if DEBUG_SLUR_SCORING
+ SCM inspect_quants = slur_->get_property ("inspect-quants");
+ if (to_boolean (slur_->get_layout ()
->lookup_variable (ly_symbol2scm ("debug-slur-scoring")))
&& scm_is_pair (inspect_quants))
{
Drul_array<Real> ins = ly_scm2interval (inspect_quants);
Real mindist = 1e6;
- for (int i = 0; i < state.scores_->size (); i ++)
+ for (int i = 0; i < configurations_.size (); i ++)
{
- Real d =fabs ((*state.scores_)[i].attachment_[LEFT][Y_AXIS] - ins[LEFT])
- + fabs ((*state.scores_)[i].attachment_[RIGHT][Y_AXIS] - ins[RIGHT]);
+ Real d =fabs (configurations_[i]->attachment_[LEFT][Y_AXIS] - ins[LEFT])
+ + fabs (configurations_[i]->attachment_[RIGHT][Y_AXIS] - ins[RIGHT]);
if (d < mindist)
{
opt_idx = i;
if (mindist > 1e5)
programming_error ("Could not find quant.");
}
- (*state.scores_)[opt_idx].score_card_ += to_string ("i%d", opt_idx);
+
+ configurations_[opt_idx]->score_card_ += to_string ("=%.2f", opt);
+ configurations_[opt_idx]->score_card_ += to_string ("i%d", opt_idx);
// debug quanting
- me->set_property ("quant-score",
- scm_makfrom0str ((*state.scores_)[opt_idx].score_card_.to_str0 ()));
+ slur_->set_property ("quant-score",
+ scm_makfrom0str (configurations_[opt_idx]->score_card_.to_str0 ()));
+
#endif
- Bezier b = (*state.scores_)[opt_idx].curve_;
- SCM controls = SCM_EOL;
- for (int i = 4; i--;)
- {
- Offset o = b.control_[i]
- - Offset (me->relative_coordinate (state.common_[X_AXIS], X_AXIS),
- me->relative_coordinate (state.common_[Y_AXIS], Y_AXIS));
- controls = scm_cons (ly_offset2scm (o), controls);
- }
- me->set_property ("control-points", controls);
+ return configurations_[opt_idx]->curve_;
}
/*
*/
Drul_array<Real>
-get_y_attachment_range (Slur_score_state const &state)
+Slur_score_state::get_y_attachment_range () const
{
Drul_array<Real> end_ys;
Direction d = LEFT;
do
{
- if (state.extremes_[d].note_column_)
+ if (extremes_[d].note_column_)
{
- end_ys[d] = state.dir_
- * ((state.dir_ * (state.base_attachments_[d][Y_AXIS] + state.parameters_.region_size_* state.dir_))
- >? (state.dir_ * (state.dir_ + state.extremes_[d].note_column_->extent (state.common_[Y_AXIS],
- Y_AXIS)[state.dir_]))
- >? (state.dir_ * state.base_attachments_[-d][Y_AXIS]));
+ end_ys[d] = dir_
+ * ((dir_ * (base_attachments_[d][Y_AXIS] + parameters_.region_size_* dir_))
+ >? (dir_ * (dir_ + extremes_[d].note_column_->extent (common_[Y_AXIS],
+ Y_AXIS)[dir_]))
+ >? (dir_ * base_attachments_[-d][Y_AXIS]));
}
else
- end_ys[d] = state.base_attachments_[d][Y_AXIS] + state.parameters_.region_size_ * state.dir_;
+ end_ys[d] = base_attachments_[d][Y_AXIS] + parameters_.region_size_ * dir_;
}
while (flip (&d) != LEFT);
Drul_array<Offset>
-get_base_attachments (Slur_score_state const &state)
+Slur_score_state::get_base_attachments () const
{
Drul_array<Offset> base_attachment;
Direction d = LEFT;
do
{
- Grob *stem = state.extremes_[d].stem_;
- Grob *head = state.extremes_[d].slur_head_;
+ Grob *stem = extremes_[d].stem_;
+ Grob *head = extremes_[d].slur_head_;
Real x = 0.0;
Real y = 0.0;
- if (state.extremes_[d].note_column_)
+ if (extremes_[d].note_column_)
{
/*
fixme: X coord should also be set in this case.
*/
if (stem
- && state.extremes_[d].stem_dir_ == state.dir_
+ && extremes_[d].stem_dir_ == dir_
&& Stem::get_beaming (stem, -d)
- && (!spanner_less (state.slur_, Stem::get_beam (stem))
- || state.has_same_beam_))
- y = state.extremes_[d].stem_extent_[Y_AXIS][state.dir_];
+ && (!spanner_less (slur_, Stem::get_beam (stem))
+ || has_same_beam_))
+ y = extremes_[d].stem_extent_[Y_AXIS][dir_];
else if (head)
- y = head->extent (state.common_[Y_AXIS], Y_AXIS)[state.dir_];
- y += state.dir_ * 0.5 * state.staff_space_;
-
- Real pos
- = (y - state.extremes_[d].staff_->relative_coordinate (state.common_[Y_AXIS],
- Y_AXIS))
- * 2.0 / state.staff_space_;
-
- /* start off staffline. */
- if (fabs (pos - my_round (pos)) < 0.2
- && Staff_symbol_referencer::on_staffline (head, (int) rint (pos))
- && Staff_symbol_referencer::line_count (head) - 1 >= rint (pos)
- )
- // TODO: calc from slur thick & line thick, parameter.
- y += 1.5 * state.staff_space_ * state.dir_ / 10;
+ y = head->extent (common_[Y_AXIS], Y_AXIS)[dir_];
+ y += dir_ * 0.5 * staff_space_;
- Grob * fh = Note_column::first_head (state.extremes_[d].note_column_);
+
+ y = move_away_from_staffline (y, head);
+
+ Grob * fh = Note_column::first_head (extremes_[d].note_column_);
x =
- (fh ? fh->extent (state.common_[X_AXIS], X_AXIS)
- : state.extremes_[d].bound_->extent (state.common_[X_AXIS], X_AXIS))
+ (fh ? fh->extent (common_[X_AXIS], X_AXIS)
+ : extremes_[d].bound_->extent (common_[X_AXIS], X_AXIS))
.linear_combination (CENTER);
}
base_attachment[d] = Offset (x, y);
do
{
- if (!state.extremes_[d].note_column_)
+ if (!extremes_[d].note_column_)
{
Real x, y;
if (d == RIGHT)
{
- x = state.extremes_[d].bound_->extent (state.common_[X_AXIS], X_AXIS)[d];
+ x = extremes_[d].bound_->extent (common_[X_AXIS], X_AXIS)[d];
}
else
{
- x = state.slur_->get_broken_left_end_align ();
+ x = slur_->get_broken_left_end_align ();
}
- Grob * col = (d == LEFT) ? state.columns_[0] : state.columns_.top();
+ Grob * col = (d == LEFT) ? columns_[0] : columns_.top();
- if (state.extremes_[-d].bound_ != col)
+ if (extremes_[-d].bound_ != col)
{
- y = robust_relative_extent (col, state.common_[Y_AXIS], Y_AXIS)[state.dir_];
- if (get_grob_direction (col) == state.dir_)
- y -= state.dir_ ;
+ y = robust_relative_extent (col, common_[Y_AXIS], Y_AXIS)[dir_];
+ y += dir_ * 0.5 * staff_space_;
+
+ if (get_grob_direction (col) == dir_
+ && Note_column::get_stem (col)
+ && !Stem::is_invisible (Note_column::get_stem (col)))
+ y -= dir_ * 1.5 * staff_space_;
}
else
y = base_attachment[-d][Y_AXIS];
+
+ y = move_away_from_staffline (y, col);
+
base_attachment[d] = Offset (x, y);
}
}
return base_attachment;
}
-void
-generate_curves (Slur_score_state const &state)
+Real
+Slur_score_state::move_away_from_staffline (Real y,
+ Grob *on_staff) const
{
- Real r_0 = robust_scm2double (state.slur_->get_property ("ratio"), 0.33);
- Real h_inf = state.staff_space_ *scm_to_double (state.slur_->get_property ("height-limit"));
- for (int i = 0; i < state.scores_->size (); i++)
- {
- Bezier bez = get_bezier (state,
- (*state.scores_)[i].attachment_, r_0, h_inf);
+ Real pos
+ = (y - Staff_symbol_referencer::get_staff_symbol (on_staff)->relative_coordinate (common_[Y_AXIS],
+ Y_AXIS))
+ * 2.0 / staff_space_;
+
+ if (fabs (pos - my_round (pos)) < 0.2
+ && Staff_symbol_referencer::on_staffline (on_staff, (int) rint (pos))
+ && Staff_symbol_referencer::line_count (on_staff) - 1 >= rint (pos)
+ )
+ y += 1.5 * staff_space_ * dir_ / 10;
- bez = avoid_staff_line (state, bez);
- (*state.scores_)[i].attachment_[LEFT] = bez.control_[0];
- (*state.scores_)[i].attachment_[RIGHT] = bez.control_[3];
- (*state.scores_)[i].curve_ = bez;
- }
+ return y;
}
-Bezier
-avoid_staff_line (Slur_score_state const &state,
- Bezier bez)
+void
+Slur_score_state::generate_curves () const
{
- Offset horiz (1,0);
- Array<Real> ts = bez.solve_derivative (horiz);
-
- /* TODO: handle case of broken slur. */
- if (!ts.is_empty ()
- && (state.extremes_[LEFT].staff_ == state.extremes_[RIGHT].staff_)
- && state.extremes_[LEFT].staff_ && state.extremes_[RIGHT].staff_)
- {
- Real y = bez.curve_point (ts[0])[Y_AXIS];
+ Real r_0 = robust_scm2double (slur_->get_property ("ratio"), 0.33);
+ Real h_inf = staff_space_ *scm_to_double (slur_->get_property ("height-limit"));
+ for (int i = 0; i < configurations_.size (); i++)
+ configurations_[i]->generate_curve (*this, r_0, h_inf);
+}
- Grob *staff = state.extremes_[LEFT].staff_;
- Real p = 2 * (y - staff->relative_coordinate (state.common_[Y_AXIS], Y_AXIS))
- / state.staff_space_;
- Real distance = fabs (my_round (p) - p); // in halfspaces
- if (distance < 4 * state.thickness_
- && (int) fabs (my_round (p))
- <= 2 * Staff_symbol_referencer::staff_radius (staff) + 0.1
- && (int (fabs (my_round (p))) % 2
- != Staff_symbol_referencer::line_count (staff) % 2))
- {
- Direction resolution_dir =
- (distance ? state.dir_ : Direction (sign (p - my_round (p))));
- // TODO: parameter
- Real newp = my_round (p) + resolution_dir
- * 5 * state.thickness_;
-
- Real dy = (newp - p) * state.staff_space_ / 2.0;
-
- bez.control_[1][Y_AXIS] += dy;
- bez.control_[2][Y_AXIS] += dy;
- }
- }
- return bez;
-}
-
-Array<Slur_score> *
-enumerate_attachments (Slur_score_state const &state, Drul_array<Real> end_ys)
+Link_array<Slur_configuration>
+Slur_score_state::enumerate_attachments (Drul_array<Real> end_ys) const
{
/*ugh. */
- Array<Slur_score> scores;
+ Link_array<Slur_configuration> scores;
Drul_array<Offset> os;
- os[LEFT] = state.base_attachments_[LEFT];
- Real minimum_length = state.staff_space_
- * robust_scm2double (state.slur_->get_property ("minimum-length"), 2.0);
+ os[LEFT] = base_attachments_[LEFT];
+ Real minimum_length = staff_space_
+ * robust_scm2double (slur_->get_property ("minimum-length"), 2.0);
- for (int i = 0; state.dir_ * os[LEFT][Y_AXIS] <= state.dir_ * end_ys[LEFT]; i++)
+ for (int i = 0; dir_ * os[LEFT][Y_AXIS] <= dir_ * end_ys[LEFT]; i++)
{
- os[RIGHT] = state.base_attachments_[RIGHT];
- for (int j = 0; state.dir_ * os[RIGHT][Y_AXIS] <= state.dir_ * end_ys[RIGHT]; j++)
+ os[RIGHT] = base_attachments_[RIGHT];
+ for (int j = 0; dir_ * os[RIGHT][Y_AXIS] <= dir_ * end_ys[RIGHT]; j++)
{
- Slur_score s;
+ Slur_configuration s;
Direction d = LEFT;
Drul_array<bool> attach_to_stem (false, false);
do
{
- os[d][X_AXIS] = state.base_attachments_[d][X_AXIS];
- if (state.extremes_[d].stem_
- && !Stem::is_invisible (state.extremes_[d].stem_)
- && state.extremes_[d].stem_dir_ == state.dir_)
+ os[d][X_AXIS] = base_attachments_[d][X_AXIS];
+ if (extremes_[d].stem_
+ && !Stem::is_invisible (extremes_[d].stem_)
+ && extremes_[d].stem_dir_ == dir_)
{
- Interval stem_y = state.extremes_[d].stem_extent_[Y_AXIS];
- stem_y.widen (0.25 * state.staff_space_);
- if (state.dir_ == -d
+ Interval stem_y = extremes_[d].stem_extent_[Y_AXIS];
+ stem_y.widen (0.25 * staff_space_);
+ if (dir_ == -d
&& stem_y.contains (os[d][Y_AXIS]))
{
- os[d][X_AXIS] = state.extremes_[d].slur_head_extent_[-d]
+ os[d][X_AXIS] = extremes_[d].slur_head_extent_[-d]
- d * 0.3;
attach_to_stem[d] = true;
}
- else if (state.dir_ *state.extremes_[d].stem_extent_[Y_AXIS][state.dir_]
- < state.dir_ * os[d][Y_AXIS]
- && !state.extremes_[d].stem_extent_[X_AXIS].is_empty ()
+ else if (dir_ *extremes_[d].stem_extent_[Y_AXIS][dir_]
+ < dir_ * os[d][Y_AXIS]
+ && !extremes_[d].stem_extent_[X_AXIS].is_empty ()
)
- os[d][X_AXIS] = state.extremes_[d].stem_extent_[X_AXIS].center ();
+ os[d][X_AXIS] = extremes_[d].stem_extent_[X_AXIS].center ();
}
}
while (flip (&d) != LEFT);
Offset dz;
dz = os[RIGHT] - os[LEFT];
if (dz[X_AXIS] < minimum_length
- || fabs (dz[Y_AXIS] / dz[X_AXIS]) > state.parameters_.max_slope_
+ || fabs (dz[Y_AXIS] / dz[X_AXIS]) > parameters_.max_slope_
)
{
do
{
- if (state.extremes_[d].slur_head_)
+ if (extremes_[d].slur_head_)
{
- os[d][X_AXIS] = state.extremes_[d].slur_head_extent_.center ();
+ os[d][X_AXIS] = extremes_[d].slur_head_extent_.center ();
attach_to_stem[d] = false;
}
}
dz = os[RIGHT] - os[LEFT];
do
{
- if (state.extremes_[d].slur_head_
+ if (extremes_[d].slur_head_
&& !attach_to_stem[d])
{
/* Horizontally move tilted slurs a little. Move
TODO: parameter */
os[d][X_AXIS]
- -= state.dir_ * state.extremes_[d].slur_head_extent_.length ()
+ -= dir_ * extremes_[d].slur_head_extent_.length ()
* sin (dz.arg ()) / 3;
}
}
while (flip (&d) != LEFT);
s.attachment_ = os;
- scores.push (s);
-
- os[RIGHT][Y_AXIS] += state.dir_ * state.staff_space_ / 2;
+ s.index_ = scores.size ();
+
+ scores.push (new Slur_configuration (s));
+
+ os[RIGHT][Y_AXIS] += dir_ * staff_space_ / 2;
}
- os[LEFT][Y_AXIS] += state.dir_ * state.staff_space_ / 2;
+ os[LEFT][Y_AXIS] += dir_ * staff_space_ / 2;
}
assert (scores.size () > 0);
- return new Array<Slur_score> (scores);
-}
-
-inline Real
-linear_interpolate (Real x, Real x1, Real x2, Real y1, Real y2)
-{
- return (x2 - x) / (x2 - x1) * y1 +
- (x - x1) / (x2 - x1) * y2 ;
+ return scores;
}
-void
-score_encompass (Slur_score_state const &state)
-{
- for (int i = 0; i < state.scores_->size (); i++)
- {
- Slur_score &configuration = state.scores_->elem_ref (i);
- Bezier const &bez (configuration.curve_);
- Real demerit = 0.0;
-
- /*
- Distances for heads that are between slur and line between
- attachment points.
- */
- Array<Real> convex_head_distances;
- Array<Real> edge_distances;
- for (int j = 0; j < state.encompass_infos_.size (); j++)
- {
- Real x = state.encompass_infos_[j].x_;
-
- bool l_edge = j==0;
- bool r_edge = j==state.encompass_infos_.size ()-1;
- bool edge = l_edge || r_edge;
-
-
- if (edge)
- {
- edge_distances.push (fabs (configuration.attachment_[l_edge ? LEFT : RIGHT][Y_AXIS]
- - state.encompass_infos_[j].get_point (state.dir_)));
- }
-
-
- if (! (x < configuration.attachment_[RIGHT][X_AXIS]
- && x > configuration.attachment_[LEFT][X_AXIS]))
- continue;
-
- Real y = bez.get_other_coordinate (X_AXIS, x);
- if (!edge)
- {
- Real head_dy = (y - state.encompass_infos_[j].head_);
- if (state.dir_ * head_dy < 0)
- {
- demerit += state.parameters_.head_encompass_penalty_;
- convex_head_distances.push (0.0);
- }
- else
- {
- Real hd = (head_dy)
- ? (1 / fabs (head_dy) - 1 / state.parameters_.free_head_distance_)
- : state.parameters_.head_encompass_penalty_;
- hd = (hd >? 0)<? state.parameters_.head_encompass_penalty_;
-
- demerit += hd;
- }
-
- Real line_y = linear_interpolate (x,
- configuration.attachment_[RIGHT][X_AXIS],
- configuration.attachment_[LEFT][X_AXIS],
- configuration.attachment_[RIGHT][Y_AXIS],
- configuration.attachment_[LEFT][Y_AXIS]);
-
- if ( 1 ) // state.dir_ * state.encompass_infos_[j].get_point (state.dir_) > state.dir_ *line_y )
- {
-
- Real closest =
- state.dir_ * (state.dir_ * state.encompass_infos_[j].get_point (state.dir_)
- >? state.dir_ *line_y
- );
- Real d = fabs (closest - y);
-
- convex_head_distances.push (d);
- }
- }
-
-
-
- if (state.dir_ * (y - state.encompass_infos_[j].stem_) < 0)
- {
- Real stem_dem =state.parameters_.stem_encompass_penalty_ ;
- if ((l_edge && state.dir_ == UP)
- || (r_edge && state.dir_ == DOWN))
- stem_dem /= 5;
-
- demerit += stem_dem;
- }
- else if (!edge)
- {
- Interval ext;
- ext.add_point (state.encompass_infos_[j].stem_);
- ext.add_point (state.encompass_infos_[j].head_);
-
- // ?
- demerit += -state.parameters_.closeness_factor_
- * (state.dir_
- * (y - (ext[state.dir_] + state.dir_ * state.parameters_.free_head_distance_))
- <? 0)
- / state.encompass_infos_.size ();
- }
- }
-
- Real variance_penalty = 0.0;
-
- if (convex_head_distances.size ())
- {
- Real avg_distance = 0.0;
- Real min_dist = infinity_f;
- for (int j = 0; j < convex_head_distances.size (); j++)
- {
- min_dist = min_dist <? convex_head_distances[j];
- avg_distance += convex_head_distances[j];
- }
-
- /*
- For slurs over 3 or 4 heads, the average distance is not a
- good normalizer.
- */
- int n = convex_head_distances.size ();
- if (convex_head_distances.size () <= 2)
- {
- // Real min_edge_dist = 1e6;
- for (int j = 0; j < edge_distances.size (); j++)
- {
- avg_distance += edge_distances[j];
- n++;
- }
-
- }
-
- /*
- TODO: maybe it's better to use (avgdist - mindist)*factor
- as penalty.
- */
- avg_distance /= n;
- variance_penalty = state.parameters_.head_slur_distance_max_ratio_;
- if (min_dist > 0.0)
- variance_penalty = ((avg_distance / (min_dist +state.parameters_.free_head_distance_)) - 1.0)
- <? variance_penalty;
-
- variance_penalty *= state.parameters_.head_slur_distance_factor_;
- }
-#if DEBUG_SLUR_QUANTING
- (*state.scores_)[i].score_card_ += to_string ("C%.2f", demerit);
- (*state.scores_)[i].score_card_ += to_string ("D%.2f", variance_penalty);
-#endif
-
- (*state.scores_)[i].score_ += demerit + variance_penalty;
- }
-}
-
Array<Extra_collision_info>
-get_extra_encompass_infos (Slur_score_state const &state)
+Slur_score_state::get_extra_encompass_infos () const
{
Link_array<Grob> encompasses
- = Pointer_group_interface__extract_grobs (state.slur_, (Grob *)0,
+ = Pointer_group_interface__extract_grobs (slur_, (Grob *)0,
"encompass-objects");
Array<Extra_collision_info> collision_infos;
for (int i = encompasses.size (); i--; )
Spanner * small_slur = dynamic_cast<Spanner*> (encompasses[i]);
Bezier b = Slur::get_curve (small_slur);
- Offset relative (small_slur->relative_coordinate (state.common_[X_AXIS], X_AXIS),
- small_slur->relative_coordinate (state.common_[Y_AXIS], Y_AXIS));
+ Offset relative (small_slur->relative_coordinate (common_[X_AXIS], X_AXIS),
+ small_slur->relative_coordinate (common_[Y_AXIS], Y_AXIS));
for (int k = 0; k < 3; k++)
{
Only take bound into account if small slur starts
together with big slur.
*/
- if (hdir && small_slur->get_bound (hdir) != state.slur_->get_bound (hdir))
+ if (hdir && small_slur->get_bound (hdir) != slur_->get_bound (hdir))
continue;
-
- Offset z = b.curve_point ( k / 2.0);
+ Offset z = b.curve_point (k / 2.0);
z += relative;
Interval yext;
yext.set_full ();
- yext[state.dir_] = z[Y_AXIS] + state.dir_ * state.thickness_ * 1.0;
+ yext[dir_] = z[Y_AXIS] + dir_ * thickness_ * 1.0;
Interval xext (-1, 1);
- xext = xext * (state.thickness_*2) + z[X_AXIS];
+ xext = xext * (thickness_*2) + z[X_AXIS];
Extra_collision_info info (small_slur,
k - 1.0,
xext,
yext,
- state.parameters_.extra_object_collision_);
+ parameters_.extra_object_collision_);
collision_infos.push (info);
}
}
else
{
Grob *g = encompasses [i];
- Interval xe = g->extent (state.common_[X_AXIS], X_AXIS);
- Interval ye = g->extent (state.common_[Y_AXIS], Y_AXIS);
+ Interval xe = g->extent (common_[X_AXIS], X_AXIS);
+ Interval ye = g->extent (common_[Y_AXIS], Y_AXIS);
Real xp = 0.0;
- Real penalty = state.parameters_.extra_object_collision_;
+ Real penalty = parameters_.extra_object_collision_;
if (Accidental_interface::has_interface (g))
{
- penalty = state.parameters_.accidental_collision_;
+ penalty = parameters_.accidental_collision_;
/* Begin copy accidental.cc */
bool parens = false;
if (to_boolean (g->get_property ("cautionary")))
&& scm_ilength (accs) == 1)
{
/* End copy accidental.cc */
- switch (scm_to_int (ly_car (accs)))
+ switch (scm_to_int (scm_car (accs)))
{
case FLAT:
case DOUBLE_FLAT:
xp = LEFT;
break ;
case SHARP:
- xp = 0.5 * state.dir_;
+ xp = 0.5 * dir_;
break ;
case NATURAL:
- xp = -state.dir_;
+ xp = -dir_;
break;
}
}
}
- ye.widen (state.thickness_ * 0.5);
- xe.widen (state.thickness_ * 1.0);
+ ye.widen (thickness_ * 0.5);
+ xe.widen (thickness_ * 1.0);
Extra_collision_info info (g, xp, xe, ye, penalty);
collision_infos.push (info);
}
return collision_infos;
}
-void
-score_extra_encompass (Slur_score_state const &state)
-{
- for (int i = 0; i < state.scores_->size (); i++)
- {
- Real demerit = 0.0;
- for (int j = 0; j < state.extra_encompass_infos_.size (); j++)
- {
- Drul_array<Offset> attachment = state.scores_->elem (i).attachment_;
- Interval slur_wid (attachment[LEFT][X_AXIS], attachment[RIGHT][X_AXIS]);
-
- /*
- to prevent numerical inaccuracies in
- Bezier::get_other_coordinate ().
- */
- Direction d = LEFT;
- bool found = false;
- Real y = 0.0;
-
- do
- {
- /*
- We need to check for the bound explicitly, since the
- slur-ending can be almost vertical, making the Y
- coordinate a bad approximation of the object-slur
- distance.
- */
- Item * as_item = dynamic_cast<Item*> (state.extra_encompass_infos_[j].grob_);
- if ((as_item
- && as_item->get_column ()
- == state.extremes_[d] .bound_->get_column ())
- || state.extra_encompass_infos_[j].extents_[X_AXIS].contains (attachment[d][X_AXIS]))
- {
- y = attachment[d][Y_AXIS];
- found = true;
- }
- }
- while (flip (&d) != LEFT);
-
- if (!found)
- {
- Real x = state.extra_encompass_infos_[j].extents_[X_AXIS]
- .linear_combination (state.extra_encompass_infos_[j].idx_);
-
- if (!slur_wid.contains (x))
- continue;
-
- y = state.scores_->elem (i).curve_.get_other_coordinate (X_AXIS, x);
- }
-
- Real dist = state.extra_encompass_infos_[j].extents_[Y_AXIS].distance (y);
- demerit +=
- fabs (0 >? (state.parameters_.extra_encompass_free_distance_ - dist)) /
- state.parameters_.extra_encompass_free_distance_
- * state.extra_encompass_infos_[j].penalty_;
- }
-#if DEBUG_SLUR_QUANTING
- (*state.scores_)[i].score_card_ += to_string ("X%.2f", demerit);
-#endif
- (*state.scores_)[i].score_ += demerit;
- }
-}
-
-void
-score_edges (Slur_score_state const &state)
-{
- for (int i = 0; i < state.scores_->size (); i++)
- {
- Direction d = LEFT;
- Slur_score &config = state.scores_->elem_ref (i);
- Offset dz = config.attachment_[RIGHT] - config.attachment_[LEFT];
- Real slope = dz[Y_AXIS] / dz[X_AXIS];
- do
- {
- Real y = config.attachment_[d][Y_AXIS];
- Real dy = fabs (y - state.base_attachments_[d][Y_AXIS]);
-
- Real factor = state.parameters_.edge_attraction_factor_;
- Real demerit = factor * dy;
- if (state.extremes_[d].stem_
- && state.extremes_[d].stem_dir_ == state.dir_
- && !Stem::get_beaming (state.extremes_[d].stem_, -d)
- )
- demerit /= 5;
-
- demerit *= exp (state.dir_ * d * slope
- * state.parameters_.edge_slope_exponent_ );
-
- (*state.scores_)[i].score_ += demerit;
-#if DEBUG_SLUR_QUANTING
- (*state.scores_)[i].score_card_ += to_string ("E%.2f", demerit);
-#endif
- }
- while (flip (&d) != LEFT);
- }
-}
-
-void
-score_slopes (Slur_score_state const &state)
-{
- Real dy = state.musical_dy_;
- for (int i = 0; i < state.scores_->size (); i++)
- {
- Offset slur_dz = (*state.scores_)[i].attachment_[RIGHT]
- - (*state.scores_)[i].attachment_[LEFT];
- Real slur_dy = slur_dz[Y_AXIS];
- Real demerit = 0.0;
-
- demerit += ((fabs (slur_dy / slur_dz[X_AXIS])
- - state.parameters_.max_slope_) >? 0)
- * state.parameters_.max_slope_factor_;
-
- /* 0.2: account for staffline offset. */
- Real max_dy = (fabs (dy) + 0.2);
- if (state.edge_has_beams_)
- max_dy += 1.0;
-
- if (!state.is_broken_)
- demerit += state.parameters_.steeper_slope_factor_
- * ((fabs (slur_dy) -max_dy) >? 0);
-
- demerit += ((fabs (slur_dy/slur_dz[X_AXIS])
- - state.parameters_.max_slope_) >? 0)
- * state.parameters_.max_slope_factor_;
-
- if (sign (dy) == 0
- && sign (slur_dy) != 0
- && !state.is_broken_)
- demerit += state.parameters_.non_horizontal_penalty_;
-
- if (sign (dy)
- && !state.is_broken_
- && sign (slur_dy)
- && sign (slur_dy) != sign (dy))
- demerit += state.edge_has_beams_
- ? state.parameters_.same_slope_penalty_ / 10
- : state.parameters_.same_slope_penalty_;
-
-#if DEBUG_SLUR_QUANTING
- (*state.scores_)[i].score_card_ += to_string ("S%.2f", demerit);
-#endif
- (*state.scores_)[i].score_ += demerit;
- }
-
-}
-
-
-Real
-fit_factor (Offset dz_unit, Offset dz_perp,
- Bezier curve, Direction d, Array<Offset> const &avoid)
-{
- Real fit_factor = 0.0;
- Offset x0 = curve.control_[0];
- curve.translate (-x0);
- curve.rotate (-dz_unit.arg ());
- curve.scale (1, d);
-
- Interval curve_xext;
- curve_xext.add_point (curve.control_[0][X_AXIS]);
- curve_xext.add_point (curve.control_[3][X_AXIS]);
-
- for (int i = 0; i < avoid.size (); i++)
- {
- Offset z = (avoid[i] - x0) ;
- Offset p (dot_product (z, dz_unit),
- d* dot_product (z, dz_perp));
- if (!curve_xext.contains (p[X_AXIS]))
- continue;
-
- Real y = curve.get_other_coordinate (X_AXIS, p[X_AXIS]);
- if (y)
- {
- fit_factor = fit_factor >? (p[Y_AXIS] / y);
- }
- }
- return fit_factor;
-}
-
-
-Bezier
-get_bezier (Slur_score_state const &state,
- Drul_array<Offset> attachments,
- Real r_0, Real h_inf)
-{
- Link_array<Grob> encompasses = state.columns_;
-
- Array<Offset> avoid;
- for (int i = 0; i < encompasses.size (); i++)
- {
- if (state.extremes_[LEFT].note_column_ == encompasses[i]
- || state.extremes_[RIGHT].note_column_ == encompasses[i])
- continue;
-
- Encompass_info inf (get_encompass_info (state, encompasses[i]));
-
- Real y = state.dir_ * ((state.dir_ * inf.head_) >? (state.dir_ *inf.stem_));
-
- avoid.push (Offset (inf.x_, y + state.dir_ * state.parameters_.free_head_distance_));
- }
-
- Link_array<Grob> extra_encompasses
- = Pointer_group_interface__extract_grobs (state.slur_, (Grob *)0, "encompass-objects");
- for (int i = 0; i < extra_encompasses.size (); i++)
- if (Slur::has_interface (extra_encompasses[i]))
- {
- Grob * small_slur = extra_encompasses[i];
- Bezier b = Slur::get_curve (small_slur);
-
- Offset z = b.curve_point (0.5);
- z += Offset (small_slur->relative_coordinate (state.common_[X_AXIS], X_AXIS),
- small_slur->relative_coordinate (state.common_[Y_AXIS], Y_AXIS));
-
- z[Y_AXIS] += state.dir_ * state.parameters_.free_slur_distance_;
- avoid.push (z);
- }
-
- Offset dz = attachments[RIGHT]- attachments[LEFT];;
- Offset dz_unit = dz;
- dz_unit *= 1 / dz.length ();
- Offset dz_perp = dz_unit * Offset (0, 1);
-
- Real indent, height;
- get_slur_indent_height (&indent, &height, dz.length (), h_inf, r_0);
-
- Real excentricity = robust_scm2double (state.slur_->get_property ("excentricity"), 0);
- Bezier curve;
-
- Real x1 = (excentricity + indent);
- Real x2 = (excentricity - indent);
- curve.control_[0] = attachments[LEFT];
- curve.control_[1] = attachments[LEFT] + dz_perp * height * state.dir_ + dz_unit * x1;
- curve.control_[2] = attachments[RIGHT] + dz_perp * height * state.dir_
- + dz_unit * x2;
- curve.control_[3] = attachments[RIGHT];
-
- Real ff = fit_factor (dz_unit, dz_perp, curve, state.dir_, avoid);
- Real len = dz.length ();
-
- /* This condition,
-
- len^2 > 4h^2 + 3 (i 1/3len)^2 - 1/3 len^2
-
- is equivalent to:
-
- |bez' (0)| < | bez' (.5)|
-
- when (control2 - control1) has the same direction as
- (control3 - control0). */
-
- Real a1 = sqr (len) / 3.0;
- Real a2 = 0.75 * sqr (indent + len / 3.0);
- Real max_h;
- if (a1 >= a2)
- max_h = sqrt (a1 - a2);
- else
- {
- programming_error ("FIXME: max_h is broken; setting to length / 3");
- max_h = len / 3.0;
- }
- height = height >? ((height * ff) <? max_h);
-
- curve.control_[0] = attachments[LEFT];
- curve.control_[1] = attachments[LEFT] + dz_perp * height * state.dir_ + dz_unit * x1;
- curve.control_[2] = attachments[RIGHT] + dz_perp * height * state.dir_ + dz_unit * x2;
- curve.control_[3] = attachments[RIGHT];
-
- return curve;
-}
projects / lilypond.git / blobdiff