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// POP_ANA.H : population analysis classes for QM methods (to determine atomic charges).

// Copyright (C) 2004 Tommi Hassinen.

// This package 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 2 of the License, or
// (at your option) any later version.

// This package 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 this package; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

/*################################################################################################*/

#ifndef POP_ANA_H
#define POP_ANA_H

class pop_ana;

struct pop_ana_es_data;
class pop_ana_electrostatic;

/*################################################################################################*/

#include "eng1_qm.h"
#include "conjgrad.h"

/*################################################################################################*/

class pop_ana
{
	protected:
	
	setup1_qm * su;
	
	public:
	
	pop_ana(setup1_qm *);
	virtual ~pop_ana(void);
	
	virtual void DoPopAna(void) = 0;
};

/*################################################################################################*/

struct pop_ana_es_data
{
	fGL x; fGL y; fGL z;
	fGL ESP;
};

class pop_ana_electrostatic : public pop_ana, public conjugate_gradient
{
	protected:
	
	vector<pop_ana_es_data> data_vector;
	
	f64 * charge;
	f64 * dchg;
	
	f64 value;
	
	public:
	
	pop_ana_electrostatic(setup1_qm *);
	~pop_ana_electrostatic(void);
	
	void DoPopAna(void);	// virtual
	
	void Check(i32s);
	f64 GetValue(void);	// virtual
	f64 GetGradient(void);	// virtual
	
	void Calculate(i32s);
};

/*################################################################################################*/

#endif	// POP_ANA_H

// eof