GCTAPsfPerfTable.hpp
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/***************************************************************************
* GCTAPsfPerfTable.hpp - CTA performance table PSF class *
* ----------------------------------------------------------------------- *
* copyright (C) 2012-2014 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 GCTAPsfPerfTable.hpp
* @brief CTA performance table point spread function class definition
* @author Juergen Knoedlseder
*/
#ifndef GCTAPSFPERFTABLE_HPP
#define GCTAPSFPERFTABLE_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include "GFits.hpp"
#include "GRan.hpp"
#include "GNodeArray.hpp"
#include "GCTAPsf.hpp"
/***********************************************************************//**
* @class GCTAPsfPerfTable
*
* @brief CTA performance table point spread function class
*
* This class implements the CTA point spread function response as function
* of energy as determined from a performance table. The performance table is
* an ASCII file that specifies the CTA performance parameters in a simple
* way.
***************************************************************************/
class GCTAPsfPerfTable : public GCTAPsf {
public:
// Constructors and destructors
GCTAPsfPerfTable(void);
GCTAPsfPerfTable(const std::string& filename);
GCTAPsfPerfTable(const GCTAPsfPerfTable& psf);
virtual ~GCTAPsfPerfTable(void);
// Operators
GCTAPsfPerfTable& operator=(const GCTAPsfPerfTable& 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);
GCTAPsfPerfTable* 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;
std::string print(const GChatter& chatter = NORMAL) const;
private:
// Methods
void init_members(void);
void copy_members(const GCTAPsfPerfTable& psf);
void free_members(void);
void update(const double& logE) const;
// Members
std::string m_filename; //!< Name of Aeff response file
GNodeArray m_logE; //!< log(E) nodes for Aeff interpolation
std::vector<double> m_r68; //!< 68% containment radius of PSF in degrees
std::vector<double> m_r80; //!< 80% containment radius of PSF in degrees
std::vector<double> m_sigma; //!< Sigma value of PSF in radians
// Precomputation cache
mutable double m_par_logE; //!< Energy for which precomputation is done
mutable double m_par_scale; //!< Gaussian normalization
mutable double m_par_sigma; //!< Gaussian sigma (radians)
mutable double m_par_width; //!< Gaussian width parameter
};
/***********************************************************************//**
* @brief Return class name
*
* @return String containing the class name ("GCTAPsfPerfTable").
***************************************************************************/
inline
std::string GCTAPsfPerfTable::classname(void) const
{
return ("GCTAPsfPerfTable");
}
/***********************************************************************//**
* @brief Return filename
*
* @return Returns filename from which point spread function was loaded
***************************************************************************/
inline
std::string GCTAPsfPerfTable::filename(void) const
{
return m_filename;
}
#endif /* GCTAPSFPERFTABLE_HPP */