+Real
+Beam::score_stem_lengths (Link_array<Grob>stems,
+ Array<Stem_info> stem_infos,
+ Array<Real> left_factor,
+ Array<Real> right_factor,
+ Array<int> directions,
+ Grob*me, Real yl, Real yr)
+{
+ Real demerit_score = 0.0 ;
+
+ for (int i=0; i < stems.size (); i++)
+ {
+ Grob* s = stems[i];
+ if (Stem::invisible_b (s))
+ continue;
+
+ Real current_y =
+ yl * left_factor[i] + right_factor[i]* yr;
+
+ Stem_info info = stem_infos[i];
+ Direction d = Direction (directions[i]);
+
+ demerit_score += 500 * ( 0 >? (info.min_y - d * current_y));
+ demerit_score += 500 * ( 0 >? (d * current_y - info.max_y));
+
+ demerit_score += 5 * shrink_extra_weight (d * current_y - info.ideal_y);
+ }
+
+ demerit_score *= 2.0 /stems.size ();
+
+ return demerit_score;
+}
+
+Real
+Beam::score_slopes_dy (Grob *me, Real yl, Real yr,
+ Real dy_mus, Real dy_damp)
+{
+ Real dy = yr - yl;
+
+ Real dem = 0.0;
+ if (sign (dy_damp) != sign (dy))
+ {
+ dem += 800;
+ }
+
+ dem += 400* (0 >? (fabs (dy) - fabs (dy_mus)));
+
+
+ dem += shrink_extra_weight (fabs (dy_damp) - fabs (dy))* 10;
+ return dem;
+}
+
+static Real
+my_modf (Real x)
+{
+ return x - floor (x);
+}
+
+Real
+Beam::score_forbidden_quants (Grob*me,
+ Real yl, Real yr,
+ Real rad,
+ Real slt,
+ Real thickness, Real interbeam,
+ int multiplicity)
+{
+ Real dy = yr - yl;
+
+ Real dem = 0.0;
+ if (fabs (yl) < rad && fabs ( my_modf (yl) - 0.5) < 1e-3)
+ dem += 1000;
+ if (fabs (yr) < rad && fabs ( my_modf (yr) - 0.5) < 1e-3)
+ dem += 1000;
+
+ // todo: use multiplicity of outer stems.
+ if (multiplicity >= 2)
+ {
+
+ Real straddle = 0.0;
+ Real sit = (thickness - slt) / 2;
+ Real inter = 0.5;
+ Real hang = 1.0 - (thickness - slt) / 2;
+
+ Direction dir = Directional_element_interface::get (me);
+ if (fabs (yl - dir * interbeam) < rad
+ && fabs (my_modf (yl) - inter) < 1e-3)
+ dem += 15;
+ if (fabs (yr - dir * interbeam) < rad
+ && fabs (my_modf (yr) - inter) < 1e-3)
+ dem += 15;
+
+ Real eps = 1e-3;
+
+ /*
+ Can't we simply compute the distance between the nearest
+ staffline and the secondary beam? That would get rid of the
+ silly case analysis here (which is probably not when we have
+ different beam-thicknesses.)
+
+ --hwn
+ */
+
+ // hmm, without Interval/Drul_array, you get ~ 4x same code...
+ if (fabs (yl - dir * interbeam) < rad + inter)
+ {
+ if (dir == UP && dy <= eps
+ && fabs (my_modf (yl) - sit) < eps)
+ dem += 15;
+
+ if (dir == DOWN && dy >= eps
+ && fabs (my_modf (yl) - hang) < eps)
+ dem += 15;
+ }
+
+ if (fabs (yr - dir * interbeam) < rad + inter)
+ {
+ if (dir == UP && dy >= eps
+ && fabs (my_modf (yr) - sit) < eps)
+ dem += 15;
+
+ if (dir == DOWN && dy <= eps
+ && fabs (my_modf (yr) - hang) < eps)
+ dem += 15;
+ }
+
+ if (multiplicity >= 3)
+ {
+ if (fabs (yl - 2 * dir * interbeam) < rad + inter)
+ {
+ if (dir == UP && dy <= eps
+ && fabs (my_modf (yl) - straddle) < eps)
+ dem += 15;
+
+ if (dir == DOWN && dy >= eps
+ && fabs (my_modf (yl) - straddle) < eps)
+ dem += 15;
+ }
+
+ if (fabs (yr - 2 * dir * interbeam) < rad + inter)
+ {
+ if (dir == UP && dy >= eps
+ && fabs (my_modf (yr) - straddle) < eps)
+ dem += 15;
+
+ if (dir == DOWN && dy <= eps
+ && fabs (my_modf (yr) - straddle) < eps)
+ dem += 15;
+ }
+ }
+ }
+
+ return dem;
+}
+
+