Barycentre.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2010 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/Util/genutil/Barycentre.h
 
#ifndef __Baricentre_H
#define __Baricentre_H
 
#include "MJD.h"
#include "sky_coord.h"
#include "Vector.h"
 
class Barycentre
{
 public:
 
  Barycentre ();
 
  void set_epoch (const MJD&);
  void set_coordinates (const sky_coord&);
  void set_observatory_xyz (double x, double y, double z);

  double get_Doppler () const;
  MJD    get_barycentric_epoch () const;

  Vector<3,double> get_geocentric_velocity(const MJD&) const;
 
  bool verbose;
 
 private:
 
  MJD epoch;
  sky_coord coordinates;
  Vector<3, double> observatory;
 
  void build () const;
  mutable bool built;
  mutable double Doppler;
  mutable MJD barycentric_epoch;
};
 
#endif