G4FPYSamplingOps.hh

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/*
 * File:   G4FPYSamplingOps.hh
 * Author: B. Wendt (wendbryc@isu.edu)
 *
 * Created on June 30, 2011, 11:10 AM
 */

/* * * * * * * * * * * * * * * *   References   * * * * * * * * * * * * * * * *
 *                                                                            *
 *  1.  "Sampling ENDL Watt Fission Spectra, D. E. Cullen, LLNL, April, 2004  *
 *                                                                            *
 * * * * * * * * * * * * * * * *   References   * * * * * * * * * * * * * * * */

#ifndef G4FPYSAMPLINGOPS_HH
#define G4FPYSAMPLINGOPS_HH

#include "Randomize.hh"
#include "globals.hh"

#include "G4FFGEnumerations.hh"
#include "G4ShiftedGaussian.hh"
#include "G4WattFissionSpectrumValues.hh"

class G4FPYSamplingOps
{
public:
// Constructor definition
    G4FPYSamplingOps( void );
    G4FPYSamplingOps( G4int Verbosity );
protected:
    void Initialize( void );

public:
// Functions
    G4int G4SampleIntegerGaussian( G4double Mean,
                                   G4double StdDev );
    G4int G4SampleIntegerGaussian( G4double Mean,
                                   G4double StdDev,
                                   G4FFGEnumerations::GaussianRange Range );
    G4double G4SampleGaussian( G4double Mean,
                               G4double StdDev );
    G4double G4SampleGaussian( G4double Mean,
                               G4double StdDev,
                               G4FFGEnumerations::GaussianRange Range );
    G4double G4SampleUniform( void );
    G4double G4SampleUniform( G4double Lower,
                              G4double Upper );
    G4double G4SampleWatt( G4int WhatIsotope,
                           G4FFGEnumerations::FissionCause WhatCause,
                           G4double WhatEnergy );
    void G4SetVerbosity( G4int WhatVerbosity );

protected:
// Variables
    // Class descriptor variables
        G4double Mean_;
        G4double StdDev_;
        G4ShiftedGaussian* ShiftedGaussianValues_;
        G4int Verbosity_;
        WattSpectrumConstants* WattConstants_;

    // Pointers to external classes
        CLHEP::HepRandomEngine* RandomEngine_;

    // Internal variables for use with sampling a Gaussian distribution.
        G4bool NextGaussianIsStoredInMemory_;
        G4double GaussianOne_;
        G4double GaussianTwo_;
        G4double Tolerance_;
// Functions
    G4bool CheckAndSetParameters( void );
    void EvaluateWattConstants( void );
    G4double SampleGaussian( void );
    void ShiftParameters( G4FFGEnumerations::GaussianReturnType Type );

// Destructor function(s)
public:
    ~G4FPYSamplingOps( void );
};

#endif  /* G4FPYSAMPLINGOPS_HH */