ELFormFactors.h

Go to the documentation of this file.

//____________________________________________________________________________
/*!
 
\class    genie::ELFormFactors
 
\brief    A class holding the Elastic Form Factors Ge,Gm
 
          This class is using the \b Strategy Pattern. \n
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool
 
\created  Apr 20, 2004
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org          
*/
//____________________________________________________________________________
 
#ifndef _EL_FORM_FACTORS_H_
#define _EL_FORM_FACTORS_H_
 
#include <iostream>
 
#include "Physics/QuasiElastic/XSection/ELFormFactorsModelI.h"
 
using std::ostream;
 
namespace genie {
 
class ELFormFactors;
class Interaction;
 
ostream & operator << (ostream & stream, const ELFormFactors & ff);
 
class ELFormFactors {
 
public:
  ELFormFactors();
  ELFormFactors(const ELFormFactors & form_factors);
  virtual ~ELFormFactors() { }
 
  //! Attach an algorithm
  void   SetModel  (const ELFormFactorsModelI * model);
 
  //! Calculate the form factors for the input interaction using the attached algorithm
  void   Calculate (const Interaction * interaction);
 
  //! Get the computed form factor Gep
  double Gep (void) const { return fGep; }
 
  //! Get the computed form factor Gmp
  double Gmp (void) const { return fGmp; }
 
  //! Get the computed form factor Gen
  double Gen (void) const { return fGen; }
 
  //! Get the computed form factor Gmn
  double Gmn (void) const { return fGmn; }
 
  //! Get the attached model
  const ELFormFactorsModelI * Model (void) const {return fModel;}
 
  void   Reset    (Option_t * opt="");
  void   Copy     (const ELFormFactors & ff);
  bool   Compare  (const ELFormFactors & ff) const;
  void   Print    (ostream & stream) const;
 
  bool             operator == (const ELFormFactors & ff) const;
  ELFormFactors &  operator =  (const ELFormFactors & ff);
  friend ostream & operator << (ostream & stream, const ELFormFactors & ff);
 
private:
 
  double fGep;
  double fGmp;
  double fGen;
  double fGmn;
 
  const ELFormFactorsModelI * fModel;
};
 
}        // genie namespace
 
#endif   // _QEL_FORM_FACTORS_H_