source file of the GNU LilyPond music typesetter
- (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "slur-configuration.hh"
-#include <math.h>
-#include "stem.hh"
-#include "warn.hh"
-#include "misc.hh"
#include "item.hh"
+#include "libc-extension.hh"
+#include "misc.hh"
#include "pointer-group-interface.hh"
-#include "slur.hh"
#include "slur-scoring.hh"
+#include "slur.hh"
#include "spanner.hh"
#include "staff-symbol-referencer.hh"
-#include "libc-extension.hh"
+#include "stem.hh"
+#include "warn.hh"
Bezier
avoid_staff_line (Slur_score_state const &state,
Bezier bez)
{
Offset horiz (1, 0);
- Array<Real> ts = bez.solve_derivative (horiz);
+ vector<Real> ts = bez.solve_derivative (horiz);
/* TODO: handle case of broken slur. */
- if (!ts.is_empty ()
+ if (!ts.empty ()
&& (state.extremes_[LEFT].staff_ == state.extremes_[RIGHT].staff_)
&& state.extremes_[LEFT].staff_ && state.extremes_[RIGHT].staff_)
{
Real
fit_factor (Offset dz_unit, Offset dz_perp,
- Bezier curve, Direction d, Array<Offset> const &avoid)
+ Bezier curve, Direction d, vector<Offset> const &avoid)
{
Real fit_factor = 0.0;
Offset x0 = curve.control_[0];
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++)
+ for (vsize 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]))
+
+ Real eps = 0.01;
+ Interval pext = eps * Interval (-1,1) + p[X_AXIS];
+ pext.intersect (curve_xext);
+ if (pext.is_empty () || pext.length () <= 1.999 * eps)
continue;
Real y = curve.get_other_coordinate (X_AXIS, p[X_AXIS]);
if (y)
- {
- fit_factor = max (fit_factor, (p[Y_AXIS] / y));
- }
+ fit_factor = max (fit_factor, (p[Y_AXIS] / y));
}
return fit_factor;
}
void
Slur_configuration::generate_curve (Slur_score_state const &state,
Real r_0, Real h_inf,
- Array<Offset> const &avoid
- )
+ vector<Offset> const &avoid)
{
Offset dz = attachment_[RIGHT]- attachment_[LEFT];;
Offset dz_unit = dz;
max_h = len / 3.0;
}
else
- {
- max_h = sqrt (max_h);
- }
+ max_h = sqrt (max_h);
Real eccentricity = robust_scm2double (state.slur_->get_property ("eccentricity"), 0);
Slur_configuration::Slur_configuration ()
{
+ tags_ = 0x0;
score_ = 0.0;
index_ = -1;
};
+
+void
+Slur_configuration::add_score (Real s, string desc)
+{
+ if (s < 0)
+ {
+ programming_error ("Negative demerits found for slur. Ignoring");
+ s = 0.0;
+ }
+
+ if (s)
+ {
+ if (score_card_.length () > 0)
+ score_card_ += ", ";
+ score_card_ += to_string ("%s=%.2f", desc.c_str (), s);
+ score_ += s;
+ }
+}
+
void
Slur_configuration::score_encompass (Slur_score_state const &state)
{
Distances for heads that are between slur and line between
attachment points.
*/
- Array<Real> convex_head_distances;
- for (int j = 0; j < state.encompass_infos_.size (); j++)
+ vector<Real> convex_head_distances;
+ for (vsize j = 0; j < state.encompass_infos_.size (); j++)
{
Real x = state.encompass_infos_[j].x_;
if (state.dir_ * head_dy < 0)
{
demerit += state.parameters_.head_encompass_penalty_;
- convex_head_distances.push (0.0);
+ convex_head_distances.push_back (0.0);
}
else
{
= state.dir_ * max (state.dir_ * state.encompass_infos_[j].get_point (state.dir_), state.dir_ * line_y);
Real d = fabs (closest - y);
- convex_head_distances.push (d);
+ convex_head_distances.push_back (d);
}
}
/ state.encompass_infos_.size ();
}
}
-
- Real variance_penalty = 0.0;
-
+ add_score (demerit, "encompass");
+
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++)
+ for (vsize j = 0; j < convex_head_distances.size (); j++)
{
min_dist = min (min_dist, convex_head_distances[j]);
avg_distance += convex_head_distances[j];
as penalty.
*/
avg_distance /= n;
- variance_penalty = state.parameters_.head_slur_distance_max_ratio_;
+ Real variance_penalty = state.parameters_.head_slur_distance_max_ratio_;
if (min_dist > 0.0)
variance_penalty
- = min ((avg_distance / (min_dist + state.parameters_.absolute_closeness_measure_) - 1.0), variance_penalty);
+ = min ((avg_distance / (min_dist + state.parameters_.absolute_closeness_measure_) - 1.0), variance_penalty);
variance_penalty = max (variance_penalty, 0.0);
variance_penalty *= state.parameters_.head_slur_distance_factor_;
- }
-
-#if DEBUG_SLUR_SCORING
- score_card_ += to_string ("C%.2f", demerit);
- score_card_ += to_string ("D%.2f", variance_penalty);
-#endif
- score_ += demerit + variance_penalty;
+ add_score (variance_penalty, "variance");
+ }
}
void
Slur_configuration::score_extra_encompass (Slur_score_state const &state)
{
- Real demerit = 0.0;
- for (int j = 0; j < state.extra_encompass_infos_.size (); j++)
+ for (vsize j = 0; j < state.extra_encompass_infos_.size (); j++)
{
Drul_array<Offset> attachment = attachment_;
+ Extra_collision_info const &info (state.extra_encompass_infos_[j]);
+
Interval slur_wid (attachment[LEFT][X_AXIS], attachment[RIGHT][X_AXIS]);
/*
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]))
+ if (!as_item)
+ continue;
+
+ Interval item_x = as_item->extent (state.common_[X_AXIS], X_AXIS);
+ item_x.intersect (state.extremes_[d].slur_head_x_extent_);
+ if (!item_x.is_empty ())
{
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_);
+ Real x = info.extents_[X_AXIS].linear_combination (info.idx_);
if (!slur_wid.contains (x))
continue;
y = curve_.get_other_coordinate (X_AXIS, x);
}
- Real dist = state.extra_encompass_infos_[j].extents_[Y_AXIS].distance (y);
- demerit
- += fabs (max (0.0, (state.parameters_.extra_encompass_free_distance_ - dist)))
- / state.parameters_.extra_encompass_free_distance_
- * state.extra_encompass_infos_[j].penalty_;
+ Real dist = 0.0;
+ if (info.type_ == ly_symbol2scm ("around"))
+ dist = info.extents_[Y_AXIS].distance (y);
+
+ /*
+ Have to score too: the curve enumeration is limited in its
+ shape, and may produce curves which collide anyway.
+ */
+ else if (info.type_ == ly_symbol2scm ("inside"))
+ dist = state.dir_ * (y - info.extents_[Y_AXIS][state.dir_]);
+ else
+ programming_error ("unknown avoidance type");
+
+ dist = max (dist, 0.0);
+
+ Real penalty = info.penalty_ * peak_around (0.1 * state.parameters_.extra_encompass_free_distance_,
+ state.parameters_.extra_encompass_free_distance_,
+ dist);
+
+ add_score (penalty, "extra");
}
-#if DEBUG_SLUR_SCORING
- score_card_ += to_string ("X%.2f", demerit);
-#endif
- score_ += demerit;
}
void
demerit *= exp (state.dir_ * d * slope
* state.parameters_.edge_slope_exponent_);
- score_ += demerit;
-#if DEBUG_SLUR_SCORING
- score_card_ += to_string ("E%.2f", demerit);
-#endif
+
+ string dir_str = d == LEFT ? "L" : "R";
+ add_score (demerit, dir_str + " edge");
}
while (flip (&d) != LEFT);
}
? state.parameters_.same_slope_penalty_ / 10
: state.parameters_.same_slope_penalty_;
-#if DEBUG_SLUR_SCORING
- score_card_ += to_string ("S%.2f", demerit);
-#endif
- score_ += demerit;
+ add_score (demerit, "slope");
}
void
-Slur_configuration::score (Slur_score_state const &state)
+Slur_configuration::calculate_score (Slur_score_state const &state)
{
score_extra_encompass (state);
score_slopes (state);
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