Mount.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2008 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/Util/genutil/Mount.h
 
#ifndef __Mount_H
#define __Mount_H
 
#include "Reference.h"
#include "MJD.h"
#include "sky_coord.h"
#include "Matrix.h"

class Mount : public Reference::Able
{
  
public:
  
  Mount ();

  virtual ~Mount ();

  void set_source_coordinates (const sky_coord& coords);
  
  void set_observatory_latitude (double latitude);
  double get_observatory_latitude () const;

  void set_observatory_longitude (double longitude);
  double get_observatory_longitude () const;

  void set_epoch (const MJD& epoch);
  MJD get_epoch () const;

  void set_hour_angle (double rad);
  double get_hour_angle () const;

  void set_local_sidereal_time (double rad);
  double get_local_sidereal_time () const;

  virtual std::string get_name () const = 0;

  virtual double get_vertical () const = 0;

  virtual std::vector< std::pair<double,Mount*> >
  slew_times (const sky_coord& coords);
 
protected:

  double declination;

  double right_ascension;

  double latitude;

  double longitude;

  MJD epoch;

  mutable double lst;

  mutable double hour_angle;

  mutable Matrix<3,3,double> source_basis;

  mutable Matrix<3,3,double> observatory_basis;

  virtual void build () const;

  bool get_built () const;
 
};
 
#endif