-Interval
-Tie::get_default_attachments (Spanner *me, Grob *common, Real gap,
- int *staff_position,
- bool *in_between,
- Tie_details const &details
- )
-{
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Direction dir = get_grob_direction (me);
- Interval attachments;
- Direction d = LEFT;
- do
- {
- attachments[d]
- = robust_relative_extent (me->get_bound (d),
- common,
- X_AXIS)[-d]
- - gap * d;
- }
- while (flip (&d) != LEFT);
-
- if (attachments.length () < details.between_length_limit_ * staff_space)
- {
- /*
- Let short ties start over note heads, instead of between.
- */
- Drul_array<bool> allow (true, true);
-
- Direction d = LEFT;
- do {
- if (Note_head::has_interface (me->get_bound (d)))
- {
- Grob *stem = unsmob_grob (me->get_bound (d)->get_object ("stem"));
- if (get_grob_direction (stem) == dir
- && -d == dir)
- allow[d] = false;
- }
- } while (flip (&d) != LEFT);
-
- if (allow[LEFT] && allow[RIGHT])
- {
- *staff_position += dir;
- do
- {
- if (Note_head::has_interface (me->get_bound (d)))
- {
- Interval extent
- = robust_relative_extent (me->get_bound (d),
- common, X_AXIS);
-
- attachments[d] = extent.linear_combination (- 0.5 * d);
- *in_between = false;
- }
- }
- while (flip (&d) != LEFT);
- }
- }
-
- return attachments;
-}