- pscore_ = ps;
- initialize ();
-}
-
-/* find the forces for all possible lines and cache ragged_ and ragged_right_ */
-void
-Constrained_breaking::initialize ()
-{
- if (!pscore_)
- return;
-
- ragged_right_ = to_boolean (pscore_->layout ()->c_variable ("ragged-right"));
- ragged_last_ = to_boolean (pscore_->layout ()->c_variable ("ragged-last"));
-
- Output_def *l = pscore_->layout ();
- System *sys = pscore_->root_system ();
- Real padding = robust_scm2double (l->c_variable ("between-system-padding"), 0);
- Real space = robust_scm2double (l->c_variable ("ideal-system-space"), 0);
-
- Interval first_line = line_dimensions_int (pscore_->layout (), 0);
- Interval other_lines = line_dimensions_int (pscore_->layout (), 1);
- /* do all the rod/spring problems */
- breaks_ = pscore_->find_break_indices ();
- all_ = pscore_->root_system ()->columns ();
- lines_.resize (breaks_.size (), breaks_.size (), Line_details ());
- vector<Real> forces = get_line_forces (all_,
- other_lines.length (),
- other_lines.length () - first_line.length (),
- ragged_right_);
- for (vsize i = 0; i < breaks_.size () - 1; i++)
- {
- Real max_ext = 0;
- for (vsize j = i + 1; j < breaks_.size (); j++)
- {
- int start = Paper_column::get_rank (all_[breaks_[i]]);
- int end = Paper_column::get_rank (all_[breaks_[j]]);
- Interval extent = sys->pure_height (sys, start, end);
- bool last = j == breaks_.size () - 1;
- bool ragged = ragged_right_ || (last && ragged_last_);
- Line_details &line = lines_.at (j, i);
-
- line.force_ = forces[i*breaks_.size () + j];
- if (ragged && last && !isinf (line.force_))
- line.force_ = 0;
- if (isinf (line.force_))
- break;
-
- Grob *c = all_[breaks_[j]];
- line.break_penalty_ = robust_scm2double (c->get_property ("line-break-penalty"), 0);
- line.page_penalty_ = robust_scm2double (c->get_property ("page-break-penalty"), 0);
- line.turn_penalty_ = robust_scm2double (c->get_property ("page-turn-penalty"), 0);
- line.break_permission_ = c->get_property ("line-break-permission");
- line.page_permission_ = c->get_property ("page-break-permission");
- line.turn_permission_ = c->get_property ("page-turn-permission");
-
- max_ext = max (max_ext, extent.length ());
- line.extent_ = extent;
- line.padding_ = padding;
- line.space_ = space;
- line.inverse_hooke_ = 1;
- }
- }
-
- /* work out all the starting indices */
- for (vsize i = 0; i < start_.size (); i++)
- {
- vsize j;
- for (j = 0; j < breaks_.size () - 1 && breaks_[j] < start_[i]; j++)
- ;
- starting_breakpoints_.push_back (j);
- start_[i] = breaks_[j];
- }
- state_.resize (start_.size ());