/* ----------------------------------------------------------------------
   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
   http://lammps.sandia.gov, Sandia National Laboratories
   Steve Plimpton, sjplimp@sandia.gov

   Copyright (2003) Sandia Corporation.  Under the terms of Contract
   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
   certain rights in this software.  This software is distributed under 
   the GNU General Public License.

   See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */

#ifdef FIX_CLASS

FixStyle(SHEAR_HISTORY,FixShearHistory)

#else

#ifndef LMP_FIX_SHEAR_HISTORY_H
#define LMP_FIX_SHEAR_HISTORY_H

#include "fix.h"

namespace LAMMPS_NS {

class FixShearHistory : public Fix {
  friend class Neighbor;
  friend class PairGranHookeHistory;
  friend class FixPour;

 public:
  FixShearHistory(class LAMMPS *, int, char **);
  ~FixShearHistory();
  int setmask();
  void init();
  void pre_exchange();

  double memory_usage();
  void grow_arrays(int);
  void copy_arrays(int, int);
  void set_arrays(int);
  int pack_exchange(int, double *);
  int unpack_exchange(int, double *);
  int pack_restart(int, double *);
  void unpack_restart(int, int);
  int size_restart(int);
  int maxsize_restart();

 private:
  int *npartner;                // # of touching partners of each atom
  int **partner;                // tags for the partners
  double ***shearpartner;       // 3 shear values with the partner

  class Pair *pair;
};

}

#endif
#endif
