G4CrossSectionPatch.hh

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//
// -------------------------------------------------------------------
//      GEANT4 Class file
//
//
//      File name:     G4CrossSectionPatch
//
//      Author:        Maria Grazia Pia (MariaGrazia.Pia@genova.infn.it)
// 
//      Creation date: 15 April 1999
//
//      Modifications: 
//      
// -------------------------------------------------------------------

#ifndef G4CROSSSECTIONPATCH_HH
#define G4CROSSSECTIONPATCH_HH

#include "globals.hh"
#include "G4CrossSectionVector.hh"
#include "G4VCrossSectionSource.hh"

class G4KineticTrack;

class G4CrossSectionPatch : public G4VCrossSectionSource
{

public:

  G4CrossSectionPatch();

  virtual ~G4CrossSectionPatch();

  G4bool operator==(const G4CrossSectionPatch& right) const;
  G4bool operator!=(const G4CrossSectionPatch& right) const;

  virtual G4double CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const;
 
  virtual const G4CrossSectionVector* GetComponents() const = 0;

  virtual G4bool IsValid(G4double e) const;


protected:

  // Transition between two cross section formulae in an energy range
  G4double Transition(const G4KineticTrack& trk1, 
          const G4KineticTrack& trk2,
          const G4VCrossSectionSource* comp1, 
          const G4VCrossSectionSource* comp2) const;

  G4double Transition(G4double ecm, 
          G4double sigma1, G4double sigma2, 
          G4double e1, G4double e2) const;

private:  

  G4CrossSectionPatch(const G4CrossSectionPatch& right);

  G4CrossSectionPatch& operator=(const G4CrossSectionPatch& right);
};
  
#endif