GCTAPsf2D.hpp
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/***************************************************************************
* GCTAPsf2D.hpp - CTA 2D point spread function class *
* ----------------------------------------------------------------------- *
* copyright (C) 2012-2015 by Juergen Knoedlseder *
* ----------------------------------------------------------------------- *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
***************************************************************************/
/**
* @file GCTAPsf2D.hpp
* @brief CTA 2D point spread function class definition
* @author Juergen Knoedlseder
*/
#ifndef GCTAPSF2D_HPP
#define GCTAPSF2D_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include "GFits.hpp"
#include "GRan.hpp"
#include "GCTAPsf.hpp"
#include "GCTAResponseTable.hpp"
/* __ Forward declarations _______________________________________________ */
class GFits;
class GFitsBinTable;
/***********************************************************************//**
* @class GCTAPsf2D
*
* @brief CTA 2D point spread function class
*
* This class implements the CTA point spread function response as function
* of energy and offset angle.
***************************************************************************/
class GCTAPsf2D : public GCTAPsf {
public:
// Constructors and destructors
GCTAPsf2D(void);
explicit GCTAPsf2D(const std::string& filename);
GCTAPsf2D(const GCTAPsf2D& psf);
virtual ~GCTAPsf2D(void);
// Operators
GCTAPsf2D& operator=(const GCTAPsf2D& psf);
double operator()(const double& delta,
const double& logE,
const double& theta = 0.0,
const double& phi = 0.0,
const double& zenith = 0.0,
const double& azimuth = 0.0,
const bool& etrue = true) const;
// Implemented pure virtual methods
void clear(void);
GCTAPsf2D* clone(void) const;
std::string classname(void) const;
void load(const std::string& filename);
std::string filename(void) const;
double mc(GRan& ran,
const double& logE,
const double& theta = 0.0,
const double& phi = 0.0,
const double& zenith = 0.0,
const double& azimuth = 0.0,
const bool& etrue = true) const;
double delta_max(const double& logE,
const double& theta = 0.0,
const double& phi = 0.0,
const double& zenith = 0.0,
const double& azimuth = 0.0,
const bool& etrue = true) const;
double containment_radius(const double& fraction,
const double& logE,
const double& theta = 0.0,
const double& phi = 0.0,
const double& zenith = 0.0,
const double& azimuth = 0.0,
const bool& etrue = true) const;
std::string print(const GChatter& chatter = NORMAL) const;
// Methods
const GCTAResponseTable& table(void) const;
void table(const GCTAResponseTable& table);
void read(const GFitsTable& table);
void write(GFitsBinTable& table) const;
void save(const std::string& filename,
const bool& clobber = false) const;
private:
// Methods
void init_members(void);
void copy_members(const GCTAPsf2D& psf);
void free_members(void);
void update(const double& logE, const double& theta) const;
// Members
std::string m_filename; //!< Name of Aeff response file
GCTAResponseTable m_psf; //!< PSF response table
// Precomputation cache
mutable double m_par_logE; //!< Cache energy
mutable double m_par_theta; //!< Cache offset angle
mutable double m_norm; //!< Global normalization
mutable double m_norm2; //!< Gaussian 2 normalization
mutable double m_norm3; //!< Gaussian 3 normalization
mutable double m_sigma1; //!< Gaussian 1 sigma
mutable double m_sigma2; //!< Gaussian 2 sigma
mutable double m_sigma3; //!< Gaussian 3 sigma
mutable double m_width1; //!< Gaussian 1 width
mutable double m_width2; //!< Gaussian 2 width
mutable double m_width3; //!< Gaussian 3 width
};
/***********************************************************************//**
* @brief Return class name
*
* @return String containing the class name ("GCTAPsf2D").
***************************************************************************/
inline
std::string GCTAPsf2D::classname(void) const
{
return ("GCTAPsf2D");
}
/***********************************************************************//**
* @brief Return filename
*
* @return Returns filename from which point spread function was loaded
***************************************************************************/
inline
std::string GCTAPsf2D::filename(void) const
{
return m_filename;
}
/***********************************************************************//**
* @brief Return response table
*
* @return Response table.
***************************************************************************/
inline
const GCTAResponseTable& GCTAPsf2D::table(void) const
{
return m_psf;
}
/***********************************************************************//**
* @brief Assign response table
*
* @param[in] table Response table.
***************************************************************************/
inline
void GCTAPsf2D::table(const GCTAResponseTable& table)
{
m_psf = table;
}
#endif /* GCTAPSF2D_HPP */