-/*
- simple-spacer.hh -- declare
-
+/*
+ simple-spacer.hh -- declare Simple_spacer
+
source file of the GNU LilyPond music typesetter
-
- (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+
+ (c) 1999--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#ifndef SIMPLE_SPACER_HH
#define SIMPLE_SPACER_HH
-#include "real.hh"
-#include "array.hh"
+#include "std-vector.hh"
#include "lily-proto.hh"
-#include "list.hh"
-#include "drul-array.hh"
+#include "smobs.hh"
-struct Rod_info {
- Real distance_f_;
- Drul_array<int> cols_;
-};
+struct Spring_description
+{
+ Real ideal_;
+ Real inverse_hooke_;
+ Real block_force_;
-struct Spring_info {
- /// the ideal distance
- Real space_f_;
+ Real length (Real force) const;
+ Spring_description ();
- /// Hooke's constant: how strong are the "springs" attached to columns
- Real hooke_f_;
+ bool is_sane () const;
- Real blocking_stretch_f_;
- Rod_info * blocking_rod_l_;
- void set (Idealspacing *);
- Spring_info();
+ bool operator> (const Spring_description &s) const
+ {
+ return block_force_ > s.block_force_;
+ }
+
+ bool operator< (const Spring_description &s) const
+ {
+ return block_force_ < s.block_force_;
+ }
};
+class Simple_spacer
+{
+public:
+ Simple_spacer ();
+
+ void solve (Real line_len, bool ragged);
+ void add_rod (int l, int r, Real dist);
+ void add_spring (Real, Real);
+ Real range_ideal_len (int l, int r) const;
+ Real range_stiffness (int l, int r) const;
+ Real configuration_length (Real) const;
+ vector<Real> spring_positions () const;
-class Simple_spring_spacer {
- Array<Spring_info> springs_;
- Pointer_list<Rod_info*> rods_;
+ Real force () const;
+ bool fits () const;
- void init ();
- Array<Real> solve ();
-
+ DECLARE_SIMPLE_SMOBS (Simple_spacer);
+
+private:
+ Real expand_line ();
+ Real compress_line ();
+ Real rod_force (int l, int r, Real dist);
+
+ vector<Spring_description> springs_;
+ Real line_len_;
+ Real force_;
+ bool ragged_;
+ bool fits_;
};
+/* returns a vector of dimensions breaks.size () * breaks.size () */
+vector<Real> get_line_forces (vector<Grob*> const &columns,
+ Real line_len,
+ Real indent,
+ bool ragged);
+
+Column_x_positions get_line_configuration (vector<Grob*> const &columns,
+ Real line_len,
+ Real indent,
+ bool ragged);
+
#endif /* SIMPLE_SPACER_HH */