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//# 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
//#
//#
//# $Id$
#ifndef MEASURES_MUVW_H
#define MEASURES_MUVW_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/measures/Measures/MeasBase.h>
#include <casacore/measures/Measures/MDirection.h>
#include <casacore/measures/Measures/MeasRef.h>
#include <casacore/casa/Quanta/MVuvw.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
class Muvw;
class MCuvw;
class MDirection;
template <class M> class MeasConvert;
template <class M> class ArrayMeasColumn;
template <class M> class ScalarMeasColumn;
//# Typedefs
// <summary> A Measure: uvw on Earth </summary>
// <use visibility=export>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="tMuvw" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class=Measure>Measure</linkto> class
// </prerequisite>
//
// <etymology>
// From Measure and uvw
// </etymology>
//
// <synopsis>
// Muvw is the derived Measure class for an interferometer uvw.
// uvws can be given in any of the direction types, or as ITRF, the
// IERS base.<br>
// Note that at the moment no correction for Earth tides (error <~ 0.05 mm/km
// EW uvw), plate motion (not relevant for telescopes on same plate) and
// relativistic effects are incorporated. B1950 has the same caveat as in
// <linkto class=MDirection>MDirection</linkto>.
// </synopsis>
//
// <example>
// <srcblock>
// // Specify an Epoch and a telescope position
// MEpoch tbm(Quantity(50927.92931, "d"));
// MPosition pos(MVPosition(-4750915.84032, 2792906.17778,
// -3200483.75028),
// MPosition::ITRF);
// // Use them in a frame
// MeasFrame mf(tbm, pos);
// // Specify an uvw (note that values here are in m)
// MVuvw mvb0(100 ,10, 0);
// cout << "uvw: " << mvb0 << endl;
// // Specify a reference (type and where and when) for the following uvw
// Muvw::Ref mbref0(Muvw::ITRF, mf);
// Muvw mb0(mvb0, mbref0);
// // Show the uvw
// cout << "uvw: " << mb0 << endl;
// cout << "uvw reference: " << mbref0 << endl;
// // Another reference
// Muvw::Ref mbref1(Muvw::J2000);
// cout << "uvw reference: " << mbref1 << endl;
// // Convert the uvw coordinates to the other reference and show it
// cout << "Test uvw conversion ..." << endl;
// Muvw::Convert bconv(mb0, mbref1);
// cout << "Converted " << mb0 << endl <<
// " to " << mbref1 << endl <<
// " as " << bconv() << endl;
// </srcblock>
// </example>
//
// <motivation>
// To be able to handle conversions between uvw coordinates with different
// reference directions.
// </motivation>
//
// <todo asof="2000/11/08">
// <li> EW baselines
// </todo>
class Muvw : public MeasBase<MVuvw, MeasRef<Muvw> > {
public:
//# Friends
// Conversion of data
friend class MeasConvert<Muvw>;
//# Enumerations
// Types of known Muvws
// <note role=warning>
// The order defines the order in the translation matrix FromTo
// in the getConvert routine. Do not change the order without
// changing the array. Additions should be made before N_types, and
// an additional row and column should be coded in FromTo, and
// in showType().</note>
enum Types {
J2000,
JMEAN,
JTRUE,
APP,
B1950,
B1950_VLA,
BMEAN,
BTRUE,
GALACTIC,
HADEC,
AZEL,
AZELSW,
AZELGEO,
AZELSWGEO,
JNAT,
ECLIPTIC,
MECLIPTIC,
TECLIPTIC,
SUPERGAL,
ITRF,
TOPO,
ICRS,
N_Types,
// Defaults
DEFAULT=ITRF,
// Synonyms
AZELNE=AZEL,
AZELNEGEO=AZELGEO };
//# Typedefs
// Measure value container for this class (i.e. Muvw::MVType)
typedef MVuvw MVType;
// Measure conversion routines for this class (i.e. Muvw::MCType)
typedef MCuvw MCType;
// Measure reference (i.e. Muvw::Ref)
typedef MeasRef<Muvw> Ref;
// MeasConvert use (i.e. Muvw::Convert)
typedef MeasConvert<Muvw> Convert;
// Measure table Columns (e.g., Muvw::ScalarColumn)
typedef ScalarMeasColumn<Muvw> ScalarColumn;
typedef ArrayMeasColumn<Muvw> ArrayColumn;
// Reference enum Types (included originally for gcc 2.95)
typedef WHATEVER_SUN_TYPEDEF(Muvw) Types Types;
//# Constructors
// <note role=tip> In the following constructors and other functions, all
// <em>MeasRef</em> can be replaced with simple <src>Measure::TYPE</src>
// where no offsets or frames are needed in the reference. </note>
// Default constructor; generates the ITRF centre
Muvw();
// Create from data and reference
// <group>
Muvw(const MVuvw &dt);
Muvw(const MVuvw &dt, const Muvw::Ref &rf);
Muvw(const MVuvw &dt, Muvw::Types rf);
Muvw(const Measure *dt);
Muvw(const MeasValue *dt);
// </group>
// Copy constructor and assign
// <group>
Muvw(const Muvw &);
Muvw &operator=(const Muvw &);
// </group>
//# Destructor
virtual ~Muvw();
//# Operators
//# General Member Functions
// Tell me your type
// <group>
virtual const String &tellMe() const;
static const String &showMe();
virtual uInt type() const;
static void assure(const Measure &in);
// </group>
// Translate reference code. The uInt version has a check for valid codes
// (i.e. it is a safe cast).
// <thrown>
// <li> AipsError in the uInt interface if illegal code given
// </thrown>
// <group>
static Muvw::Types castType(uInt tp);
static const String &showType(Muvw::Types tp);
static const String &showType(uInt tp);
// </group>
// Translate string to reference code
// <group>
static Bool getType(Muvw::Types &tp, const String &in);
Bool giveMe(Muvw::Ref &mr, const String &in);
// </group>
// Set the offset in the reference (False if non-matching Measure)
virtual Bool setOffset(const Measure &in);
// Set the reference type to the specified String. False if illegal
// string, reference set to DEFAULT.
virtual Bool setRefString(const String &in);
// Get the default reference type
virtual const String &getDefaultType() const;
// Get a list of all known reference codes. nall returns the number in list,
// nextra the number of specials (like planets) that should be at
// end of list). typ returns the list of corresponding types.
// <group>
virtual const String* allTypes(Int &nall, Int &nextra,
const uInt *&typ) const;
static const String* allMyTypes(Int &nall, Int &nextra,
const uInt *&typ);
// </group>
// Check if all internal tables of types (both enum and String) are
// complete and correct. This function is called automatically if and when
// necessary.
// <thrown>
// <li> AipsError if a (programming) error in the types.
// </thrown>
// <group>
virtual void checkTypes() const;
static void checkMyTypes();
// </group>
// Get the correct Muvw type from a given direction type (or v.v.)
// <group>
static Muvw::Types fromDirType(const MDirection::Types in);
static MDirection::Types toDirType(const Muvw::Types in);
// </group>
// Get the reference type (for records, including codes like R_)
virtual String getRefString() const;
// Get my type (as Register)
static uInt myType();
// Get Measure data
// <group>
Quantum<Vector<Double> > get(const Unit &inunit) const;
Quantum<Vector<Double> > getAngle() const;
Quantum<Vector<Double> > getAngle(const Unit &inunit) const;
// </group>
// Make copy
// <group>
virtual Measure *clone() const;
// </group>
private:
//# Enumerations
//# Data
//# Member functions
};
} //# NAMESPACE CASACORE - END
#endif
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