GModelSpatialRadial.hpp
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/***************************************************************************
* GModelSpatialRadial.hpp - Abstract radial spatial model base class *
* ----------------------------------------------------------------------- *
* copyright (C) 2011-2022 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 GModelSpatialRadial.hpp
* @brief Abstract radial spatial model base class interface definition
* @author Juergen Knoedlseder
*/
#ifndef GMODELSPATIALRADIAL_HPP
#define GMODELSPATIALRADIAL_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include <vector>
#include "GModelSpatial.hpp"
#include "GModelPar.hpp"
#include "GSkyDir.hpp"
/* __ Forward declarations _______________________________________________ */
class GEnergy;
class GTime;
class GPhoton;
class GRan;
class GSkyRegion;
class GXmlElement;
/***********************************************************************//**
* @class GModelSpatialRadial
*
* @brief Abstract radial spatial model base class
*
* This class defines the interface for a radial model as spatial component
* of the factorized source model. Typical examples of radial components are
* axisymmetric Disk, Gaussian or Shell sources.
***************************************************************************/
class GModelSpatialRadial : public GModelSpatial {
public:
// Constructors and destructors
GModelSpatialRadial(void);
GModelSpatialRadial(const GModelSpatialRadial& model);
explicit GModelSpatialRadial(const GXmlElement& xml);
virtual ~GModelSpatialRadial(void);
// Operators
virtual GModelSpatialRadial& operator=(const GModelSpatialRadial& model);
// Pure virtual methods
virtual void clear(void) = 0;
virtual GModelSpatialRadial* clone(void) const = 0;
virtual std::string classname(void) const = 0;
virtual double eval(const double& theta,
const GEnergy& energy,
const GTime& time,
const bool& gradients = false) const = 0;
virtual GSkyDir mc(const GEnergy& energy,
const GTime& time,
GRan& ran) const = 0;
virtual bool contains(const GSkyDir& dir,
const double& margin = 0.0) const = 0;
virtual double theta_max(void) const = 0;
virtual std::string print(const GChatter& chatter = NORMAL) const = 0;
// Implemented pure virtual base class methods
virtual GClassCode code(void) const;
virtual bool is_energy_dependent(void) const;
virtual bool is_time_dependent(void) const;
virtual double eval(const GPhoton& photon,
const bool& gradients = false) const;
virtual double mc_norm(const GSkyDir& dir, const double& radius) const;
virtual void read(const GXmlElement& xml);
virtual void write(GXmlElement& xml) const;
// Other methods
std::string coordsys(void) const;
const GSkyDir& dir(void) const;
void dir(const GSkyDir& dir);
protected:
// Protected methods
void init_members(void);
void copy_members(const GModelSpatialRadial& model);
void free_members(void);
bool is_celestial(void) const;
virtual void set_region(void) const = 0;
// Protected members
GModelPar m_lon; //!< Right Ascension or Galactic longitude (deg)
GModelPar m_lat; //!< Declination or Galactic latitude (deg)
// Cached members for sky direction handling
mutable GSkyDir m_dir; //!< Sky direction representing parameters
mutable double m_last_lon; //!< Last longitude
mutable double m_last_lat; //!< Last latitude
};
/***********************************************************************//**
* @brief Return class code
*
* @return GModelSpatialRadial.
*
* Returns the code GModelSpatialRadial of the class.
***************************************************************************/
inline
GClassCode GModelSpatialRadial::code(void) const
{
return GMODEL_SPATIAL_RADIAL;
}
/***********************************************************************//**
* @brief Signals whether radial model is energy dependent
*
* @return True if radial model is energy dependent, false otherwise.
*
* Signals whether the radial model is energy dependent. This method always
* returns false.
***************************************************************************/
inline
bool GModelSpatialRadial::is_energy_dependent(void) const
{
return (false);
}
/***********************************************************************//**
* @brief Signals whether radial model is time dependent
*
* @return True if radial model is time dependent, false otherwise.
*
* Signals whether the radial model is time dependent. This method always
* returns false.
***************************************************************************/
inline
bool GModelSpatialRadial::is_time_dependent(void) const
{
return (false);
}
/***********************************************************************//**
* @brief Return normalization of radial source for Monte Carlo simulations
*
* @param[in] dir Centre of simulation cone.
* @param[in] radius Radius of simulation cone (degrees).
* @return Normalization.
*
* Returns the normalization for a radial source within a circular region.
* The normalization is 1 if the radial source falls within the circle
* defined by @p dir and @p radius, 0 otherwise.
***************************************************************************/
inline
double GModelSpatialRadial::mc_norm(const GSkyDir& dir,
const double& radius) const
{
double norm = (dir.dist_deg(this->dir()) <= radius+theta_max()) ? 1.0 : 0.0;
return (norm);
}
/***********************************************************************//**
* @brief Return coordinate system
*
* @return Coordinate system of point source model.
*
* Returns "CEL" for a celestial coordinate system and "GAL" for a Galactic
* coordinate system.
***************************************************************************/
inline
std::string GModelSpatialRadial::coordsys(void) const
{
return (is_celestial() ? "CEL" : "GAL");
}
/***********************************************************************//**
* @brief Check if model holds celestial coordinates
*
* @return True if model holds celestial coordinates, false otherwise.
***************************************************************************/
inline
bool GModelSpatialRadial::is_celestial(void) const
{
return (m_lon.name() == "RA");
}
#endif /* GMODELSPATIALRADIAL_HPP */