- }
- else
- set_grob_direction (me, Tie::get_default_dir (me));
-
- return SCM_UNSPECIFIED;
-}
-
-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;
-}
-
-Interval
-get_skyline_attachment (Drul_array< Array < Skyline_entry > > const &skylines,
- Real y)
-{
- Interval attachments;
- Direction d = LEFT;
- do
- {
- attachments[d] = skyline_height (skylines[d], y, -d);
- }
- while (flip (&d) != LEFT);
-
- return attachments;
-}
-
-void
-Tie::get_configuration (Grob *me_grob, Grob *common,
- Tie_configuration *conf,
- Drul_array< Array < Skyline_entry > > const *skylines,
- Tie_details const &details
- )
-{
- Spanner *me = dynamic_cast<Spanner*> (me_grob);
- if (!head (me, LEFT) && !head (me, RIGHT))
- {
- programming_error ("tie without heads");
- me->suicide ();
- return ;
- }
-
- /*
- UGH. Don't mirror Tie_configuration.
- */
- conf->head_position_ = (int) Tie::get_position (me);
- if (!conf->dir_)
- conf->dir_ = get_grob_direction (me);
- if (!conf->dir_)
- conf->dir_ = get_default_dir (me);
-
- Real staff_space = details.staff_space_;
- bool in_between = true;
- Real gap = robust_scm2double (me->get_property ("x-gap"), 0.2);
-
- if (conf->attachment_x_.is_empty())
- {
- if (!skylines)
- conf->attachment_x_ = get_default_attachments (me, common, gap,
- &conf->position_,
- &in_between, details);
- else
- {
- Real y = staff_space * 0.5 * conf->position_;
- conf->attachment_x_ = get_skyline_attachment (*skylines, y);
- conf->attachment_x_.widen (-gap);
- }
- }
-
- Bezier b = slur_shape (conf->attachment_x_.length(),
- details.height_limit_,
- details.ratio_);
- b.scale (1, conf->dir_);
-
- Offset middle = b.curve_point (0.5);
- Offset edge = b.curve_point (0.0);
-
- conf->position_ = int (rint (conf->position_));
-
- Real dy = fabs (middle[Y_AXIS] - edge[Y_AXIS]);
- bool in_space = !(Staff_symbol_referencer::on_staffline (me, (int) conf->position_));
- bool fits_in_space =
- (dy < 0.6 * staff_space);
-
- /*
- Avoid dot
- */
- Grob *left_dot = unsmob_grob (me->get_bound (LEFT)->get_object ("dot"));
- int dot_pos = left_dot
- ? int (Staff_symbol_referencer::get_position (left_dot))
- : 0;
- if (left_dot
- && (conf->position_ == dot_pos
- || conf->position_ + conf->dir_ == dot_pos))
- {
- conf->position_ += conf->dir_;
- in_space = !in_space;