BivariateGaussian.hh

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// -*- C++ -*-
// $Id: BivariateGaussian.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
//---------------------BivariateGaussian------------------------------------//
//                                                                          //
// Class BivariateGaussian                                                  //
// Joe Boudreau, Petar Maksimovic, November 1999                            //
//                                                                          //
//--------------------------------------------------------------------------//
#ifndef BivariateGaussian_h
#define BivariateGaussian_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
#include "CLHEP/GenericFunctions/Parameter.hh"
 
namespace Genfun {
 
  /**
   * @author
   * @ingroup genfun
   */
  class BivariateGaussian : public AbsFunction  {
 
    FUNCTION_OBJECT_DEF(BivariateGaussian)
 
      public:
 
    // Constructor
    BivariateGaussian();
 
    // Copy constructor
    BivariateGaussian(const BivariateGaussian &right);
  
    // Destructor
    virtual ~BivariateGaussian();
  
    // Retreive function value
    virtual double operator ()(double argument) const override;    // Gives an error.
    virtual double operator ()(const Argument & a) const override; // Must use this one
 
    // Dimensionality
    virtual unsigned int dimensionality() const override;
 
    // Get the mean of the BivariateGaussian
    Parameter & mean0(); 
    const Parameter & mean0() const; 
    Parameter & mean1(); 
    const Parameter & mean1() const; 
 
    // Get the sigma of the BivariateGaussian
    Parameter & sigma0();
    const Parameter & sigma0() const;
    Parameter & sigma1();
    const Parameter & sigma1() const;
  
    // Get the correlation coefficient:
    Parameter & corr01();
    const Parameter & corr01() const;
    
 
  private:
 
    // It is illegal to assign an adjustable constant
    const BivariateGaussian & operator=(const BivariateGaussian &right);
 
    // Here is the decay constant
    Parameter _mean0;
    Parameter _mean1;
    
    // Here is the sigma
    Parameter _sigma0;
    Parameter _sigma1;
 
    // Here is the correlation coefficient:
    Parameter _corr01;
 
  };
} // namespace Genfun
 
#endif