// $Id: NoiseGenerator.hh 28 2010-01-12 10:24:06Z adotti $

/**
 * @file   NoiseGenerator.hh
 *
 * @date   10 Dec 2009
 * @author adotti
 *
 * @brief  Brief simulates electronic noise.
 */

#ifndef NOISEGENERATOR_HH_
#define NOISEGENERATOR_HH_


#include "G4Types.hh"
#include "Randomize.hh"

/*! \brief simulates electronic noise
 * This class simulates gaussian noise around 0
 */
class NoiseGenerator
{
public:
  //! \brief Default constructor
  NoiseGenerator(const G4double& value);
  //! \brief Deafault destructor
  virtual ~NoiseGenerator() {};
  /*! \brief Generate noise
   * By default generate gaussian noise
   * if sigma<0 do not smear
   */
  virtual G4double operator() ();
  /*! \name copy and assignement operators
   * These methods are needed since
   * randomGauss should not be copied
   */
  //@{
  //! \brief assignement operator
  inline NoiseGenerator& operator= (const NoiseGenerator& rhs)
  {
  	sigma = rhs.sigma;
  	return *this;
  }
  //! \brief copy constructor
  NoiseGenerator(const NoiseGenerator& rhs);
  //@}
private:
  //! Noise standard deviation
  G4double sigma;
  //! Gaussian Random number
  G4RandGauss randomGauss;
};

#endif /* NOISEGENERATOR_HH_ */