GCTAPointing.hpp
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/***************************************************************************
* GCTAPointing.hpp - CTA pointing class *
* ----------------------------------------------------------------------- *
* copyright (C) 2010-2015 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 GCTAPointing.hpp
* @brief CTA pointing class interface definition
* @author Juergen Knoedlseder
*/
#ifndef GCTAPOINTING_HPP
#define GCTAPOINTING_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include "GSkyDir.hpp"
#include "GTime.hpp"
#include "GTimeReference.hpp"
#include "GMatrix.hpp"
#include "GHorizDir.hpp"
#include "GNodeArray.hpp"
#include "GFitsTable.hpp"
#include "GCTAInstDir.hpp"
/* __ Forward declarations _______________________________________________ */
class GXmlElement;
/***********************************************************************//**
* @class GCTAPointing
*
* @brief CTA pointing class.
*
* This class implements a CTA pointing. For the time being it is assumed
* that the pointing direction is time-independent.
*
* @todo No transformation from sky coordinates to geographic coordinates
* has so far been implemented. The azimuth and zenith angle are not
* meaningful.
***************************************************************************/
class GCTAPointing : public GBase {
public:
// Constructors and destructors
GCTAPointing(void);
explicit GCTAPointing(const GSkyDir& dir);
explicit GCTAPointing(const GXmlElement& xml);
explicit GCTAPointing(const std::string& filename);
GCTAPointing(const GCTAPointing& pnt);
virtual ~GCTAPointing(void);
// Operators
virtual GCTAPointing& operator=(const GCTAPointing& pnt);
// Methods
void clear(void);
GCTAPointing* clone(void) const;
std::string classname(void) const;
const GSkyDir& dir(void) const;
void dir(const GSkyDir& dir);
GCTAInstDir instdir(const GSkyDir& skydir) const;
GSkyDir skydir(const GCTAInstDir& instdir) const;
const GMatrix& rot(void) const;
const double& zenith(void) const;
const double& azimuth(void) const;
void zenith(const double& zenith);
void azimuth(const double& azimuth);
GHorizDir dir_horiz(const GTime& time) const;
void load(const std::string& filename);
void read(const GFitsTable& table);
void read(const GXmlElement& xml);
void write(GXmlElement& xml) const;
std::string print(const GChatter& chatter = NORMAL) const;
protected:
// Protected methods
void init_members(void);
void copy_members(const GCTAPointing& pnt);
void free_members(void);
void update(void) const;
// Protected members
GSkyDir m_dir; //!< Pointing direction in sky coordinates
double m_zenith; //!< Pointing zenith angle
double m_azimuth; //!< Pointing azimuth angle
bool m_has_table; //!< Table is loaded
GNodeArray m_table_nodes; //!< Pointing nodes
std::vector<double> m_table_az; //!< Table of azimuths (rad)
std::vector<double> m_table_alt; //!< Table of altitudes (rad)
GTime m_table_tmin; //!< Min time bound in table
GTime m_table_tmax; //!< Max time bound in table
GTimeReference m_reference; //!< Time reference
// Cached members
mutable bool m_has_cache; //!< Has transformation cache
mutable GMatrix m_Rback; //!< Rotation matrix
};
/***********************************************************************//**
* @brief Return class name
*
* @return String containing the class name ("GCTAPointing").
***************************************************************************/
inline
std::string GCTAPointing::classname(void) const
{
return ("GCTAPointing");
}
/***********************************************************************//**
* @brief Return pointing sky direction
*
* @return Pointing sky direction.
***************************************************************************/
inline
const GSkyDir& GCTAPointing::dir(void) const
{
return m_dir;
}
/***********************************************************************//**
* @brief Return pointing zenith angle
*
* @return Pointing zenith angle.
***************************************************************************/
inline
const double& GCTAPointing::zenith(void) const
{
return m_zenith;
}
/***********************************************************************//**
* @brief Return pointing azimuth angle
*
* @return Pointing zenith angle.
***************************************************************************/
inline
const double& GCTAPointing::azimuth(void) const
{
return m_azimuth;
}
/***********************************************************************//**
* @brief assign zenith angle
*
* @param[in] zenith The zenith angle. (deg)
***************************************************************************/
inline
void GCTAPointing::zenith(const double& zenith)
{
m_zenith = zenith;
}
/***********************************************************************//**
* @brief assign azimuth angle
*
* @param[in] azimuth The azimuth angle. (deg)
***************************************************************************/
inline
void GCTAPointing::azimuth(const double& azimuth)
{
m_azimuth = azimuth;
}
#endif /* GCTAPOINTING_HPP */