#include "dimensions.hh"
#include "group-interface.hh"
-static void
-do_rod (Item *l, Item *r)
+void
+Separating_group_spanner::find_rods (Item * r, SCM next)
{
- Rod rod;
-
- Interval li (Separation_item::my_width (l));
Interval ri (Separation_item::my_width (r));
+ if (ri.empty_b ())
+ return;
+
+ /*
+ This is an inner loop, however, in most cases, the interesting L
+ will just be the first entry of NEXT, making it linear in most of
+ the cases. */
+ for(; gh_pair_p (next); next = gh_cdr (next))
+ {
+ Item *l = dynamic_cast<Item*> (unsmob_grob (gh_car( next)));
+ Item *lb = l->find_prebroken_piece (RIGHT);
+
+ if (lb)
+ {
+ Interval li (Separation_item::my_width (lb));
- rod.item_l_drul_[LEFT] =l;
- rod.item_l_drul_[RIGHT]=r;
+ if (!li.empty_b ())
+ {
+ Rod rod;
- if (li.empty_b () || ri.empty_b ())
- rod.distance_f_ = 0;
- else
- rod.distance_f_ = li[RIGHT] - ri[LEFT];
+ rod.item_l_drul_[LEFT] = lb;
+ rod.item_l_drul_[RIGHT] = r;
- rod.columnize ();
- rod.add_to_cols ();
+ rod.distance_f_ = li[RIGHT] - ri[LEFT];
+
+ rod.columnize ();
+ rod.add_to_cols ();
+ }
+ }
+
+ Interval li (Separation_item::my_width (l));
+ if (!li.empty_b ())
+ {
+ Rod rod;
+
+ rod.item_l_drul_[LEFT] =l;
+ rod.item_l_drul_[RIGHT]=r;
+
+ rod.distance_f_ = li[RIGHT] - ri[LEFT];
+
+ rod.columnize ();
+ rod.add_to_cols ();
+
+ break;
+ }
+ else
+ /*
+ this grob doesn't cause a constraint. We look further until we
+ find one that does. */
+ ;
+ }
}
-
+
MAKE_SCHEME_CALLBACK (Separating_group_spanner,set_spacing_rods,1);
SCM
Separating_group_spanner::set_spacing_rods (SCM smob)
/*
Order of elements is reversed!
*/
- SCM elt = gh_cadr (s);
- SCM next_elt = gh_car (s);
+ SCM elt = gh_car (s);
+ Item *r = dynamic_cast<Item*> (unsmob_grob (elt));
- Item *l = dynamic_cast<Item*> (unsmob_grob (elt));
- Item *r = dynamic_cast<Item*> (unsmob_grob (next_elt));
-
- if (!r || !l)
+ if (!r)
continue;
-
- Item *lb
- = dynamic_cast<Item*> (l->find_prebroken_piece (RIGHT));
Item *rb
= dynamic_cast<Item*> (r->find_prebroken_piece (LEFT));
- do_rod (l, r);
- if (lb)
- {
- do_rod (lb, r);
- }
-
+ find_rods (r, gh_cdr (s));
if (rb)
- {
- do_rod (l, rb);
- }
-
- if (lb && rb)
- {
- do_rod (lb, rb);
-
- }
+ find_rods (rb, gh_cdr (s));
}
/*
void
Separating_group_spanner::set_interface (Grob*)
{
+}
+bool
+Separating_group_spanner::has_interface (Grob*)
+{//todo
+ assert (false);
}