source file of the GNU LilyPond music typesetter
- (c) 2006 Joe Neeman <joeneeman@gmail.com>
+ (c) 2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#ifndef CONSTRAINED_BREAKING_HH
#include "break-algorithm.hh"
#include "lily-guile.hh"
-#include "matrix.hh"
-#include "prob.hh"
struct Line_details {
Real force_;
- Interval extent_; /* Y-extent of the system */
+ Real extent_; /* Y-extent of the system */
Real padding_; /* compulsory space after this system (if we're not last on a page) */
- Real bottom_padding_;
- Real space_; /* spring length */
+ Real space_; /* spring length (stretches over extent_ but not over padding_) */
Real inverse_hooke_;
SCM break_permission_;
Line_details ()
{
force_ = infinity_f;
+ extent_ = 0;
padding_ = 0;
- bottom_padding_ = 0;
space_ = 0;
inverse_hooke_ = 1;
break_permission_ = ly_symbol2scm ("allow");
page_penalty_ = 0;
turn_penalty_ = 0;
}
-
- Line_details (Prob *pb)
- {
- force_ = 0;
- extent_ = unsmob_stencil (pb->get_property ("stencil")) ->extent (Y_AXIS);
- padding_ = 0;
- space_ = 1.0;
- inverse_hooke_ = 1.0;
- break_permission_ = ly_symbol2scm ("allow");
- page_permission_ = pb->get_property ("page-break-permission");
- turn_permission_ = pb->get_property ("page-turn-permission");
- break_penalty_ = 0;
- page_penalty_ = robust_scm2double (pb->get_property ("page-break-penalty"), 0);
- turn_penalty_ = robust_scm2double (pb->get_property ("page-turn-penalty"), 0);
- }
};
/*
/*
A dynamic programming solution to breaking scores into lines
*/
-class Constrained_breaking
+class Constrained_breaking : public Break_algorithm
{
public:
vector<Column_x_positions> solve ();
- Constrained_breaking (Paper_score *ps);
- Constrained_breaking (Paper_score *ps, vector<vsize> const &start_col_posns);
+ Constrained_breaking ();
+ Constrained_breaking (vector<vsize> const &start_col_posns);
- vector<Column_x_positions> get_solution (vsize start, vsize end, vsize sys_count);
- vector<Column_x_positions> get_best_solution (vsize start, vsize end);
+ vector<Column_x_positions> get_solution(vsize start, vsize end, vsize sys_count);
vector<Line_details> get_details (vsize start, vsize end, vsize sys_count);
int get_max_systems (vsize start, vsize end);
int get_min_systems (vsize start, vsize end);
void resize (vsize systems);
private:
- Paper_score *pscore_;
vsize valid_systems_;
vsize systems_;
- bool ragged_right_;
- bool ragged_last_;
/* the (i,j)th entry is the configuration for breaking between
columns i and j */
- Matrix<Line_details> lines_;
+ vector<Line_details> lines_;
+ vsize lines_rank_;
/* the [i](j,k)th entry is the score for fitting the first k bars onto the
first j systems, starting at the i'th allowed starting column */
- vector<Matrix<Constrained_break_node> > state_;
+ vector<vector<Constrained_break_node> > state_;
vector<vsize> start_; /* the columns at which we might be asked to start breaking */
vector<vsize> starting_breakpoints_; /* the corresponding index in breaks_ */
vector<Grob*> all_;
vector<vsize> breaks_;
- void initialize ();
-
Column_x_positions space_line (vsize start_col, vsize end_col);
- vsize prepare_solution (vsize start, vsize end, vsize sys_count);
+ void prepare_solution (vsize start, vsize end, vsize sys_count, vsize *rank, vsize *brk);
Real combine_demerits (Real force, Real prev_force);