MeasMath.h

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//# MeasMath.h: Measure conversion aid routines
//# Copyright (C) 1998,2000,2002-2004,2007
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#
//#
//# $Id: MeasMath.h 20615 2009-06-09 02:16:01Z Malte.Marquarding $

#ifndef MEASURES_MEASMATH_H
#define MEASURES_MEASMATH_H

//# Includes
#include <casa/aips.h>
#include <casa/Quanta/Euler.h>
#include <casa/Quanta/RotMatrix.h>
#include <casa/Quanta/MVPosition.h>
#include <casa/Quanta/MVDirection.h>
#include <measures/Measures/MeasFrame.h>

namespace casa { //# NAMESPACE CASA - BEGIN

//# Forward Declarations
class Measure;
class MRBase;
class Precession;
class Nutation;
class SolarPos;
class Aberration;

//# Typedefs

// <summary> Measure conversion aid routines </summary>

// <use visibility=local>

// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="tMeasure" demos="">
// </reviewed>

// <prerequisite>
//   <li> <linkto class=Measure>MeasConvert</linkto> class 
//   <li> <linkto class=MConvertBase>overall conversion</linkto>  class
// </prerequisite>
//
// <etymology>
// Measure and Mathematics
// </etymology>
//
// <synopsis>
// The conversion of measures like MDirection, MPosition etc have many
// conversion routines in common. This class combines all of these
// conversions, including data caches for re-use.
// 
// The class is always created by the default constructor. For each operation
// (like e.g. Precession application), it has three function:
// <ul>
//   <li> create(): create an instance of the data necessary to convert
//   <li> apply(): apply the conversion (in the sense of from standard to
//      perturbed (e.g. from J2000 to TOPO))
//   <li> deapply(): in the reverse direction of apply
// </ul>
// </synopsis>
//
// <example>
// See <linkto class=MCDirection>MCDirection</linkto> source for how to use
// the class.
// </example>
//
// <motivation> To re-use code for a specific measure conversion, and to ease
// the caching administration for each individual conversion.
// </motivation>
//
// <todo asof="1998/09/30">
//      <li> Nothing I know of
// </todo>

class MeasMath { 
  
public:

  //# Constructors
  // Default constructor
  MeasMath();
  
  //# Destructor
  ~MeasMath();

  //# Member functions
  // Initialise the frame to be used. The apply direction uses the
  // inref if present; the deapply the outref if present, otherwise the
  // other one.
  void initFrame(MRBase &outref, MRBase &inref);

  // Functions to create a particular conversion instance; to apply
  // or deapply the instance.
  // <group>
  // Precession for J2000 (IAU definition) and in coordinates
  //   <group>
  void createPrecession();
  void applyPrecession(MVPosition &in);
  void deapplyPrecession(MVPosition &in);
  //   </group>
  // Precession for B1950 and in coordinates
  //   <group>
  void createPrecessionB1950();
  void applyPrecessionB1950(MVPosition &in);
  void deapplyPrecessionB1950(MVPosition &in);
  //   </group>
  // Nutation for J2000 (IAU standard) and in coordinates
  //   <group>
  void createNutation();
  void applyNutation(MVPosition &in);
  void deapplyNutation(MVPosition &in);
  //   </group>
  // Nutation for B1950 and in coordinates
  //   <group>
  void createNutationB1950();
  void applyNutationB1950(MVPosition &in);
  void deapplyNutationB1950(MVPosition &in);
  //   </group>
  // Precession and Nutation for J2000 or B1950 and in coordinates
  //   <group>
  void createPrecNutat();
  void applyPrecNutat(MVPosition &in);
  void deapplyPrecNutat(MVPosition &in);
  void createPrecNutatB1950();
  void applyPrecNutatB1950(MVPosition &in, Bool doin=True);
  void deapplyPrecNutatB1950(MVPosition &in, Bool doin=True);
  //   </group>
  // Aberration for J2000 (IAU definition) and B1950 and in coordinates
  //   <group>
  void createAberration();
  void applyAberration(MVPosition &in, Bool doin=True);
  void deapplyAberration(MVPosition &in, Bool doin=True);
  void createAberrationB1950();
  void applyAberrationB1950(MVPosition &in, Bool doin=True);
  void deapplyAberrationB1950(MVPosition &in, Bool doin=True);
  //   </group>
  // Solar bending for J2000 (IAU definition) and in coordinates.
  // False if dependent on frame direction rather than input one.
  //   <group>
  void createSolarPos();
  void applySolarPos(MVPosition &in, Bool doin=True);
  void deapplySolarPos(MVPosition &in, Bool doin=True);
  //   </group>
  // Various conversions
  // <group>
  void applyHADECtoITRF(MVPosition &in);
  void deapplyHADECtoITRF(MVPosition &in);
  void applyHADECtoAZEL(MVPosition &in);
  void deapplyHADECtoAZEL(MVPosition &in);
  void applyHADECtoAZELGEO(MVPosition &in);
  void deapplyHADECtoAZELGEO(MVPosition &in); 
  void applyJ2000toB1950(MVPosition &in, Double epo, Bool doin);
  void deapplyJ2000toB1950(MVPosition &in, Double epo, Bool doin);
  void applyJ2000toB1950(MVPosition &in, Bool doin=True);
  void deapplyJ2000toB1950(MVPosition &in, Bool doin=True);
  void applyJ2000toB1950_VLA(MVPosition &in, Bool doin=True);
  void deapplyJ2000toB1950_VLA(MVPosition &in, Bool doin=True);
  void applyETerms(MVPosition &in, Bool doin=True, Double epo=2000.0);
  void deapplyETerms(MVPosition &in, Bool doin=True,