TG4CachedMagneticField.h

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#ifndef TG4_CACHED_MAGNETIC_FIELD_H
#define TG4_CACHED_MAGNETIC_FIELD_H
 
//-------------------------------------------------
// The Geant4 Virtual Monte Carlo package
// Copyright (C) 2007 - 2014 Ivana Hrivnacova
// All rights reserved.
//
// For the licensing terms see geant4_vmc/LICENSE.
// Contact: root-vmc@cern.ch
//-------------------------------------------------
 
 
#include "TG4FieldParameters.h"
#include "TG4MagneticField.h"
 
#include <G4ThreeVector.hh>
#include <globals.hh>
 
class TG4FieldParameters;
 
class G4EquationOfMotion;
class G4MagIntegratorStepper;
class G4LogicalVolume;
 
class TVirtualMagField;
 
 
class TG4CachedMagneticField : public TG4MagneticField
{
 public:
  TG4CachedMagneticField(TVirtualMagField* magField, G4double constDistance);
  virtual ~TG4CachedMagneticField();
 
  virtual void GetFieldValue(const G4double point[3], G4double* bfield) const;
 
  // virtual void Update(const TG4FieldParameters& parameters);
  virtual void PrintStatistics() const;
 
  void ClearCounter();
  void SetConstDistance(G4double value);
 
 private:
  // data members
  mutable G4ThreeVector fLastLocation;
  mutable G4ThreeVector fLastValue;
  mutable G4int fCallsCounter;
  mutable G4int fEvaluationsCounter;
  G4double fConstDistanceSquare;
};
 
#endif // TG4_CACHED_MAGNETIC_FIELD_H