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// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4UrbanFluctuation
//
// Author:        V.Ivanchenko make a class with the Laszlo Urban model
//
// Creation date: 14.02.2022
//
// Modifications:
//
//
// Class Description:
//
// Implementation of energy loss fluctuations made by L.Urban for 
// Geant4 10.X series for updated design of 11.X by V.Ivanchenko

// -------------------------------------------------------------------
//

#ifndef G4UrbanFluctuation_h
#define G4UrbanFluctuation_h 1

#include "G4UniversalFluctuation.hh"

class G4UrbanFluctuation : public G4UniversalFluctuation
{

public:

  explicit G4UrbanFluctuation(const G4String& nam = "UrbanFluc");

  ~G4UrbanFluctuation() override;

  // hide assignment operator
  G4UrbanFluctuation & operator =
  (const G4UrbanFluctuation &right) = delete;
  G4UrbanFluctuation(const G4UrbanFluctuation&) = delete;

protected:

  G4double SampleGlandz(CLHEP::HepRandomEngine* rndm, 
                        const G4Material*, const G4double tcut) override;

private:

  // material properties
  const G4Material* lastMaterial = nullptr;
  G4double f1Fluct = 0.0;
  G4double f2Fluct = 0.0;
  G4double e1Fluct = 0.0;
  G4double e2Fluct = 0.0;
  G4double e1LogFluct = 0.0;
  G4double e2LogFluct = 0.0;
  G4double esmall = 0.0;
};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#endif