Line data Source code
1 : //# HetArrayConvFunc.h: Definition for HetArrayConvFunc
2 : //# Copyright (C) 2008
3 : //# Associated Universities, Inc. Washington DC, USA.
4 : //#
5 : //# This library is free software; you can redistribute it and/or modify it
6 : //# under the terms of the GNU General Public License as published by
7 : //# the Free Software Foundation; either version 2 of the License, or (at your
8 : //# option) any later version.
9 : //#
10 : //# This library is distributed in the hope that it will be useful, but WITHOUT
11 : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 : //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
13 : //# License for more details.
14 : //#
15 : //# You should have received a copy of the GNU General Public License
16 : //# along with this library; if not, write to the Free Software Foundation,
17 : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
18 : //#
19 : //# Correspondence concerning AIPS++ should be adressed as follows:
20 : //# Internet email: casa-feedback@nrao.edu.
21 : //# Postal address: AIPS++ Project Office
22 : //# National Radio Astronomy Observatory
23 : //# 520 Edgemont Road
24 : //# Charlottesville, VA 22903-2475 USA
25 : //#
26 : //#
27 : //# $Id$
28 : #ifndef SYNTHESIS_TRANSFORM2_HETARRAYCONVFUNC_H
29 : #define SYNTHESIS_TRANSFORM2_HETARRAYCONVFUNC_H
30 :
31 : #include <synthesis/TransformMachines2/SimplePBConvFunc.h>
32 : #include <casacore/casa/Arrays/ArrayFwd.h>
33 :
34 : namespace casacore{
35 :
36 : template<class T> class ImageInterface;
37 :
38 : }
39 :
40 : namespace casa {
41 :
42 : // <summary> A class to support FTMachines get their convolution casacore::Function </summary>
43 :
44 : // <use visibility=export>
45 : // <prerequisite>
46 : // <li> <linkto class=VisBuffer>VisBuffer</linkto> module
47 : // </prerequisite>
48 : // <etymology>
49 : // "HetArray" for Heterogeneous casacore::Array => different dish sizes
50 : // "ConvFunc" for Convolution Functions
51 : // appropriate convfunctions for each pair of antenna generated and cached
52 : // </etymology>
53 : //
54 : // <synopsis>
55 : // FTMachines like WProjection and MosaicFT need convolution functions to
56 : // deal with directional dependent issues...
57 : // this class and related ones provide and cache such functions for re-use
58 : //</synopsis>
59 : //Forward declarations
60 : namespace vi{class VisBuffer2;}
61 : namespace refim{
62 :
63 : class HetArrayConvFunc : public SimplePBConvFunc
64 :
65 : {
66 : public:
67 : HetArrayConvFunc();
68 : HetArrayConvFunc(const PBMathInterface::PBClass
69 : typeToUse, const casacore::String vpTable="");
70 : //Constructor from record
71 : //if for prediction only no need to recover fluxscale
72 : HetArrayConvFunc(const casacore::RecordInterface& rec, casacore::Bool calcFluxscale);
73 : virtual ~HetArrayConvFunc();
74 :
75 : //Returns the convfunctions in the Arrays...the rowMap maps the vb.row
76 : //to the plane of the convfunc appropriate...chanMap and polMap similarly
77 :
78 : virtual void findConvFunction(const casacore::ImageInterface<casacore::Complex>& iimage,
79 : const vi::VisBuffer2& vb,
80 : const casacore::Int& convSampling,
81 : const casacore::Vector<casacore::Double>& visFreq,
82 : casacore::Array<casacore::Complex>& convFunc,
83 : casacore::Array<casacore::Complex>& weightConvFunc,
84 : casacore::Vector<casacore::Int>& convsize,
85 : casacore::Vector<casacore::Int>& convSupport,
86 : casacore::Vector<casacore::Int>& polMap, casacore::Vector<casacore::Int>& chanMap, casacore::Vector<casacore::Int>& rowMap,
87 : const casacore::Bool getConjConvFuncs=false,
88 : const casacore::MVDirection& extraShift=casacore::MVDirection(0.0), const casacore::Bool useExtraShift=casacore::False
89 : );
90 :
91 : virtual casacore::ImageInterface<casacore::Float>& getFluxScaleImage();
92 : // slice flux scale images
93 : virtual void sliceFluxScale(const casacore::Int npol);
94 : //Serialization
95 : virtual casacore::Bool toRecord(casacore::RecordInterface& rec);
96 : virtual casacore::Bool fromRecord(casacore::String& err, const casacore::RecordInterface& rec, casacore::Bool calcFluxscale=false);
97 : virtual void reset();
98 0 : virtual casacore::String name() {return casacore::String("HetArrayConvFunc");}
99 : //----------------------------------------------
100 : //Spply phase gradient to convfuncs 5 dim convfuncs expected X,Y, pol, chan, row
101 : virtual void rephaseConvFunc(const casacore::ImageInterface<casacore::Complex>& iimage,
102 : const vi::VisBuffer2& vb,const casacore::Int& convSampling, casacore::Array<casacore::Complex>& convFunc,
103 : casacore::Array<casacore::Complex>& weightConvFunc,const std::vector<casacore::Int>& pmap, const std::vector<casacore::Int>& cmap, const std::vector<casacore::Int>& rmap, const casacore::MVDirection& extraShift, const casacore::Bool useExtraShift);
104 :
105 : private:
106 : void applyGradientToYLine(const casacore::Int iy, casacore::Complex*& convFunctions,
107 : casacore::Complex*& convWeights, const casacore::Double pixXdir, const casacore::Double pixYdir,
108 : casacore::Int convSize, const casacore::Int ndishpair, const casacore::Int nchan, const casacore::Int nPol);
109 : //same as above except apply phasegradient on selected planes as defined by
110 : //pmap, cmap and rmap
111 : void applyGradientToYLine(const casacore::Int iy, casacore::Complex*& convFunctions,
112 : casacore::Complex*& convWeights, const casacore::Double pixXdir, const casacore::Double pixYdir,
113 : casacore::Int convSize, const casacore::Int ndishpair, const casacore::Int nchan, const casacore::Int nPol, const std::vector<casacore::Int>& pmap, const std::vector<casacore::Int>& cmap, const std::vector<casacore::Int>& rmap);
114 : void fillConjConvFunc(const casacore::Vector<casacore::Double>& beamFreqs);
115 : casacore::Int conjSupport(const casacore::Vector<casacore::Double>& beamFreqs);
116 : casacore::Int factorial(casacore::Int n);
117 : // the return value are -1 or false for not in cache yet but pointing direction
118 : //seems to be inside image
119 : // 1 if value is cached..we have stopped caching..so it should not return this value
120 : // 2 pointing is off image ...thus valid but not useful
121 : casacore::Int checkPBOfField(const vi::VisBuffer2& vb, casacore::Vector<casacore::Int>& rowMap, const casacore::MVDirection& extraShift=casacore::MVDirection(0.0), const casacore::Bool useExtraShift=casacore::False);
122 : void findAntennaSizes(const vi::VisBuffer2& vb);
123 : void supportAndNormalize(casacore::Int plane, casacore::Int convSampling);
124 : void supportAndNormalizeLatt(casacore::Int plane, casacore::Int convSampling, casacore::TempLattice<casacore::Complex>& convFuncLat,
125 : casacore::TempLattice<casacore::Complex>& weightConvFuncLat);
126 : void init(const PBMathInterface::PBClass typeToUse);
127 : void makerowmap(const vi::VisBuffer2& vb, casacore::Vector<casacore::Int>& rowMap);
128 : casacore::Float interpLanczos( const casacore::Double& x , const casacore::Double& y, const casacore::Double& nx, const casacore::Double& ny, const casacore::Float* data, const casacore::Float a=3);
129 : casacore::Float sinc(const casacore::Float x) ;
130 : casacore::Array<casacore::Complex> resample(const casacore::Array<casacore::Complex>& inarray, const casacore::Double factor);
131 : casacore::Matrix<casacore::Complex> resample2(const casacore::Matrix<casacore::Complex>& inarray, const casacore::Double factor);
132 : PBMathInterface::PBClass pbClass_p;
133 : //std::map <casacore::String, casacore::Int> convFunctionMap_p;
134 : casacore::Vector<casacore::Int64> convFunctionMap_p;
135 : casacore::Int64 nDefined_p;
136 : std::map<casacore::String, casacore::Int> antDiam2IndexMap_p;
137 : casacore::Vector<casacore::Int> antIndexToDiamIndex_p;
138 : casacore::Block<casacore::CountedPtr<PBMathInterface> > antMath_p;
139 : casacore::Int msId_p;
140 : casacore::Int actualConvIndex_p;
141 : casacore::Array<casacore::Complex> convFunc_p;
142 : casacore::Array<casacore::Complex> weightConvFunc_p;
143 : casacore::Array<casacore::Complex> convSave_p;
144 : casacore::Array<casacore::Complex> weightSave_p;
145 : casacore::Int convSize_p;
146 : casacore::String vpTable_p;
147 : casacore::Vector<casacore::Int> convSupport_p;
148 : casacore::Block <casacore::CountedPtr<casacore::Array<casacore::Complex> > > convFunctions_p;
149 : casacore::Block < casacore::CountedPtr<casacore::Array<casacore::Complex> > > convFunctionsConjFreq_p;
150 : casacore::Block <casacore::CountedPtr<casacore::Array<casacore::Complex> > > convWeights_p;
151 : casacore::Block<casacore::CountedPtr<casacore::Vector<casacore::Int> > > convSizes_p;
152 : casacore::Block <casacore::CountedPtr<casacore::Vector<casacore::Int> > > convSupportBlock_p;
153 :
154 : };
155 : }; //end of namespace refim
156 : } // end namespace casa
157 : #endif
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