casacore
MCRadialVelocity.h
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1 //# MCRadialVelocity.h: MRadialVelocity conversion routines
2 //# Copyright (C) 1995,1996,1997,1998,1999,2000,2002,2003
3 //# Associated Universities, Inc. Washington DC, USA.
4 //#
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25 //#
26 //#
27 //# $Id$
28 
29 #ifndef MEASURES_MCRADIALVELOCITY_H
30 #define MEASURES_MCRADIALVELOCITY_H
31 
32 //# Includes
33 #include <casacore/casa/aips.h>
34 #include <casacore/measures/Measures/MeasBase.h>
35 #include <casacore/measures/Measures/MeasRef.h>
36 #include <casacore/measures/Measures/MCBase.h>
37 #include <casacore/measures/Measures/MConvertBase.h>
38 #include <casacore/measures/Measures/MRadialVelocity.h>
39 #include <casacore/casa/OS/Mutex.h>
40 
41 namespace casacore { //# NAMESPACE CASACORE - BEGIN
42 
43 //# Forward Declarations
44 class MCRadialVelocity;
45 class MDoppler;
46 class MVPosition;
47 class MVDirection;
48 class Aberration;
49 class String;
50 
51 //# Typedefs
52 
53 // <summary> MRadialVelocity conversion routines </summary>
54 
55 // <use visibility=local>
56 
57 // <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="tMeasure" demos="">
58 // </reviewed>
59 
60 // <prerequisite>
61 // <li> <linkto class=Measure>Measure</linkto> class
62 // <li> <linkto class=MCBase>MCBase</linkto> base class
63 // <li> <linkto class=MConvertBase>overall conversion</linkto> class
64 // </prerequisite>
65 //
66 // <etymology>
67 // Measure, Convert and RadialVelocity
68 // </etymology>
69 //
70 // <synopsis>
71 // Contains state machinery and cashing for actual conversions
72 //
73 // <example>
74 // Get the Doppler shift for an oberved HI RadialVelocity of 100 km/s
75 // <srcblock>
76 // #include <casacore/measures/Measures.h>
77 // #include <casacore/measures/Measures/MRadialVelocity.h>
78 // #include <casacore/measures/Measures/MDoppler.h>
79 // cout << "Redshift for 100 km/s: " <<
80 // MDoppler::Convert( MRadialVelocity( Quantity(100., "km/s"),
81 // MRadialVelocity::TOPO).toDoppler(QC::HI),
82 // MDoppler::Z)() << endl;
83 // </srcblock>
84 // </example>
85 //
86 // <motivation>
87 // </motivation>
88 //
89 // <todo asof="2003/03/03">
90 // </todo>
91 
92 class MCRadialVelocity : public MCBase {
93 
94 public:
95  //# Friends
96  // Conversion of data
97  friend class MeasConvert<MRadialVelocity>;
98 
99  //# Constructors
100  // Default constructor
102 
103  //# Destructor
105 
106  //# Member functions
107  // Show the state of the conversion engine (mainly for debugging purposes)
108  static String showState();
109 
110 private:
111  //# Enumerations
112  // The list of actual routines provided.
113  // <note role=warning> Each <src>AA_BB</src> in the list points to routine
114  // that can be used in the FromTo list in the getConvert routine.
115  // In addition the type to which each is converted should be in the
116  // ToRef array, again in the proper order. </note>
117  enum Routes {
133 
134  //# Typedefs
135 
136  //# Operators
137 
138  //# General Member Functions
139 
140  //# Enumerations
141 
142  //# Cached Data
147 
148  //# State machine data
149  // Transition list
150  static uInt ToRef_p[N_Routes][3];
151  // Transition matrix
153  // Object to ensure safe multi-threaded lazy single initialization
155 
156  //# Constructors
157  // Copy constructor (not implemented)
159  // Assignment (not implemented)
161 
162  //# Member functions
163  // Create conversion function pointer
164  virtual void getConvert(MConvertBase &mc,
165  const MRBase &inref,
166  const MRBase &outref);
167 
168  // Create help structures for Measure conversion routines
169  virtual void initConvert(uInt which, MConvertBase &mc);
170 
171  // Delete the pointers used in the MeasConvert help structure cache
172  virtual void clearConvert();
173 
174  // Routine to convert RadialVelocity from one reference frame to another
175  virtual void doConvert(MeasValue &in,
176  MRBase &inref,
177  MRBase &outref,
178  const MConvertBase &mc);
179  // Conversion routine to cater for inheritance question
181  MRBase &inref,
182  MRBase &outref,
183  const MConvertBase &mc);
184 
185 private:
186  // Fill the global state. Called using theirInitOnce.
187  static void doFillState();
188 };
189 
190 
191 } //# NAMESPACE CASACORE - END
192 
193 #endif
Wrapper around std::call_once.
Definition: Mutex.h:215
Routes
Each derived class should have a list of routines to be called:
Definition: MCBase.h:134
static uInt FromTo_p[MRadialVelocity::N_Types][MRadialVelocity::N_Types]
Transition matrix.
virtual void getConvert(MConvertBase &mc, const MRBase &inref, const MRBase &outref)
Create conversion function pointer.
virtual void initConvert(uInt which, MConvertBase &mc)
Create help structures for Measure conversion routines.
static uInt ToRef_p[N_Routes][3]
Transition list.
static void doFillState()
Fill the global state.
static CallOnce0 theirInitOnce
Object to ensure safe multi-threaded lazy single initialization.
MCRadialVelocity()
Default constructor.
virtual void doConvert(MeasValue &in, MRBase &inref, MRBase &outref, const MConvertBase &mc)
Routine to convert RadialVelocity from one reference frame to another.
void doConvert(MVRadialVelocity &in, MRBase &inref, MRBase &outref, const MConvertBase &mc)
Conversion routine to cater for inheritance question.
static String showState()
Show the state of the conversion engine (mainly for debugging purposes)
MCRadialVelocity & operator=(const MCRadialVelocity &other)
Assignment (not implemented)
virtual void clearConvert()
Delete the pointers used in the MeasConvert help structure cache.
MCRadialVelocity(const MCRadialVelocity &other)
Copy constructor (not implemented)
String: the storage and methods of handling collections of characters.
Definition: String.h:223
this file contains all the compiler specific defines
Definition: mainpage.dox:28
unsigned int uInt
Definition: aipstype.h:51