fix_gravity.h
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	/* ----------------------------------------------------------------------
	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(gravity,FixGravity)

	#else

	#ifndef LMP_FIX_GRAVITY_H
	#define LMP_FIX_GRAVITY_H

	#include "fix.h"

	namespace LAMMPS_NS {

	class FixGravity : public Fix {
	friend class FixPour;

	public:
	FixGravity(class LAMMPS , int, char *);
	int setmask();
	void init();
	void setup(int);
	void post_force(int);
	void post_force_respa(int, int, int);

	private:
	int style;
	double magnitude,dt;
	double phi,theta,phigrad,thetagrad;
	double xdir,ydir,zdir;
	double xgrav,ygrav,zgrav,xacc,yacc,zacc;
	double degree2rad;
	int nlevels_respa;
	int time_origin;
	};

	}

	#endif
	#endif