/*
- spring.hh -- declare Spring
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1999--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SPRING_HH
#include "lily-proto.hh"
#include "smobs.hh"
-class Spring
+class Spring : public Simple_smob<Spring>
{
+public:
+ static SCM equal_p (SCM, SCM);
+ static const char type_p_name_[];
+private:
Real distance_;
Real min_distance_;
Real inverse_stretch_strength_;
Real inverse_compress_strength_;
- DECLARE_SIMPLE_SMOBS (Spring);
+ Real blocking_force_;
+
+ void update_blocking_force ();
+
public:
Spring ();
Spring (Real distance, Real min_distance);
Real min_distance () const {return min_distance_;}
Real inverse_stretch_strength () const {return inverse_stretch_strength_;}
Real inverse_compress_strength () const {return inverse_compress_strength_;}
+ Real blocking_force () const {return blocking_force_;}
+
+ Real length (Real f) const;
void set_distance (Real);
void set_min_distance (Real);
+ void ensure_min_distance (Real);
void set_inverse_stretch_strength (Real);
void set_inverse_compress_strength (Real);
+ void set_blocking_force (Real);
void set_default_strength ();
+ void set_default_compress_strength ();
+ void set_default_stretch_strength ();
- void operator*= (Real);
- Grob *other_;
+ void operator *= (Real);
+ bool operator > (Spring const &) const;
};
-DECLARE_UNSMOB (Spring, spring);
Spring merge_springs (vector<Spring> const &springs);
#endif /* SPRING_HH */
-