Line data Source code
1 : // -*- C++ -*-
2 : //# AWVisResampler.h: Definition of the AWVisResampler class
3 : //# Copyright (C) 1997,1998,1999,2000,2001,2002,2003
4 : //# Associated Universities, Inc. Washington DC, USA.
5 : //#
6 : //# This library is free software; you can redistribute it and/or modify it
7 : //# under the terms of the GNU Library General Public License as published by
8 : //# the Free Software Foundation; either version 2 of the License, or (at your
9 : //# option) any later version.
10 : //#
11 : //# This library is distributed in the hope that it will be useful, but WITHOUT
12 : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
14 : //# License for more details.
15 : //#
16 : //# You should have received a copy of the GNU Library General Public License
17 : //# along with this library; if not, write to the Free Software Foundation,
18 : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
19 : //#
20 : //# Correspondence concerning AIPS++ should be addressed as follows:
21 : //# Internet email: aips2-request@nrao.edu.
22 : //# Postal address: AIPS++ Project Office
23 : //# National Radio Astronomy Observatory
24 : //# 520 Edgemont Road
25 : //# Charlottesville, VA 22903-2475 USA
26 : //#
27 : //# $Id$
28 :
29 : #ifndef SYNTHESIS_TRANSFORM2_AWVISRESAMPLER_H
30 : #define SYNTHESIS_TRANSFORM2_AWVISRESAMPLER_H
31 :
32 : #include <synthesis/TransformMachines2/CFStore.h>
33 : #include <synthesis/TransformMachines2/VBStore.h>
34 : #include <synthesis/TransformMachines2/VisibilityResampler.h>
35 : #include <msvis/MSVis/VisBuffer2.h>
36 : #include <casacore/casa/Arrays/Array.h>
37 : #include <casacore/casa/Arrays/Vector.h>
38 :
39 : #include <casacore/casa/Logging/LogIO.h>
40 : #include <casacore/casa/Logging/LogSink.h>
41 : #include <casacore/casa/Logging/LogMessage.h>
42 :
43 : namespace casa { //# NAMESPACE CASA - BEGIN
44 : namespace refim{
45 : class AWVisResampler: public VisibilityResampler
46 : {
47 : public:
48 0 : AWVisResampler(): VisibilityResampler(),
49 : // cached_phaseGrad_p(),
50 0 : cached_PointingOffset_p()
51 0 : {cached_PointingOffset_p.resize(2);cached_PointingOffset_p=-1000.0;runTimeG_p=runTimeDG_p=0.0;};
52 : // AWVisResampler(const CFStore& cfs): VisibilityResampler(cfs) {}
53 0 : virtual ~AWVisResampler() {};
54 :
55 0 : virtual VisibilityResamplerBase* clone()
56 0 : {return new AWVisResampler(*this);}
57 :
58 : // AWVisResampler(const AWVisResampler& other): VisibilityResampler(other),cfMap_p(), conjCFMap_p()
59 : // {copy(other);}
60 :
61 0 : virtual void copyMaps(const AWVisResampler& other)
62 0 : {setCFMaps(other.cfMap_p, other.conjCFMap_p);}
63 0 : virtual void copy(const VisibilityResamplerBase& other)
64 : {
65 0 : VisibilityResampler::copy(other);
66 0 : }
67 0 : virtual Bool needCFPhaseScreen() {return true;};
68 :
69 0 : virtual void copy(const AWVisResampler& other)
70 : {
71 0 : VisibilityResampler::copy(other);
72 0 : SynthesisUtils::SETVEC(cached_phaseGrad_p, other.cached_phaseGrad_p);
73 0 : SynthesisUtils::SETVEC(cached_PointingOffset_p, other.cached_PointingOffset_p);
74 0 : }
75 :
76 : AWVisResampler& operator=(const AWVisResampler& other)
77 : {
78 : copy(other);
79 : SynthesisUtils::SETVEC(cached_phaseGrad_p, other.cached_phaseGrad_p);
80 : SynthesisUtils::SETVEC(cached_PointingOffset_p, other.cached_PointingOffset_p);
81 : return *this;
82 : }
83 :
84 0 : virtual void setCFMaps(const casacore::Vector<casacore::Int>& cfMap, const casacore::Vector<casacore::Int>& conjCFMap)
85 0 : {SETVEC(cfMap_p,cfMap);SETVEC(conjCFMap_p,conjCFMap);}
86 : //
87 : //------------------------------------------------------------------------------
88 : //
89 : // Re-sample the griddedData on the VisBuffer (a.k.a gridding).
90 : //
91 : // In this class, these just call the private templated version.
92 : // The first variant grids onto a double precision grid while the
93 : // second one does it on a single precision grid.
94 : //
95 0 : virtual void DataToGrid(casacore::Array<casacore::DComplex>& griddedData, VBStore& vbs, casacore::Matrix<casacore::Double>& sumwt,
96 : const casacore::Bool& dopsf,casacore::Bool useConjFreqCF=false)
97 0 : {DataToGridImpl_p(griddedData, vbs, sumwt,dopsf,useConjFreqCF);}
98 :
99 0 : virtual void DataToGrid(casacore::Array<casacore::Complex>& griddedData, VBStore& vbs, casacore::Matrix<casacore::Double>& sumwt,
100 : const casacore::Bool& dopsf,casacore::Bool useConjFreqCF=false)
101 0 : {DataToGridImpl_p(griddedData, vbs, sumwt,dopsf,useConjFreqCF);}
102 :
103 : //
104 : //------------------------------------------------------------------------------
105 : //
106 : // Re-sample VisBuffer to a regular grid (griddedData) (a.k.a. de-gridding)
107 : //
108 : virtual void GridToData(VBStore& vbs,const casacore::Array<casacore::Complex>& griddedData);
109 : protected:
110 : //
111 : //------------------------------------------------------------------------------
112 : //----------------------------Private parts-------------------------------------
113 : //------------------------------------------------------------------------------
114 : //
115 :
116 : // private:
117 :
118 : casacore::Vector<casacore::Int> gridInc_p, cfInc_p;
119 : casacore::Vector<casacore::Double> cached_PointingOffset_p;
120 : //
121 : // Re-sample the griddedData on the VisBuffer (a.k.a de-gridding).
122 : //
123 : template <class T>
124 : void DataToGridImpl_p(casacore::Array<T>& griddedData, VBStore& vb,
125 : casacore::Matrix<casacore::Double>& sumwt,const casacore::Bool& dopsf,
126 : casacore::Bool /*useConjFreqCF*/);
127 :
128 : void sgrid(casacore::Vector<casacore::Double>& pos, casacore::Vector<casacore::Int>& loc, casacore::Vector<casacore::Double>& off,
129 : casacore::Complex& phasor, const casacore::Int& irow, const casacore::Matrix<casacore::Double>& uvw,
130 : const casacore::Double& dphase, const casacore::Double& freq,
131 : const casacore::Vector<casacore::Double>& scale, const casacore::Vector<casacore::Double>& offset,
132 : const casacore::Vector<casacore::Float>& sampling);
133 :
134 0 : inline casacore::Bool onGrid (const casacore::Int& nx, const casacore::Int& ny, const casacore::Int& nw,
135 : const casacore::Vector<casacore::Int>& loc,
136 : const casacore::Vector<casacore::Int>& support)
137 : {
138 0 : return (((loc(0)-support[0]) >= 0 ) && ((loc(0)+support[0]) < nx) &&
139 0 : ((loc(1)-support[1]) >= 0 ) && ((loc(1)+support[1]) < ny) &&
140 0 : (loc(2) >= 0) && (loc(2) <= nw));
141 : };
142 :
143 : // casacore::Array assignment operator in CASACore requires lhs.nelements()
144 : // == 0 or lhs.nelements()=rhs.nelements()
145 : template <class T>
146 0 : inline void SETVEC(casacore::Vector<T>& lhs, const casacore::Vector<T>& rhs)
147 0 : {lhs.resize(rhs.shape()); lhs = rhs;};
148 :
149 :
150 : //
151 : // Internal methods to address a 4D array. These should ulimately
152 : // moved to a Array4D class in CASACore
153 : //
154 :
155 : // This is called less frequently. Currently once per VisBuffer
156 : // inline void cacheAxisIncrements(const casacore::Vector<casacore::Int>& n, casacore::Vector<casacore::Int>& inc)
157 : // {inc.resize(4);inc[0]=1, inc[1]=inc[0]*n[0], inc[2]=inc[1]*n[1], inc[3]=inc[2]*n[2];(void)n[3];}
158 :
159 :
160 : // The following method is also called from the inner loop, but
161 : // does not use CASA casacore::Vector (which are not thread safe, I (SB) am
162 : // told).
163 0 : inline casacore::Complex getFrom4DArray(const casacore::Complex *__restrict__& store,
164 : const casacore::Int* iPos, const casacore::Int* inc)
165 : {
166 0 : return *(store+(iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]));
167 : // return store[iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]];
168 : };
169 :
170 : // The following two methods are called in the innermost loop.
171 : inline casacore::Complex getFrom4DArray(const casacore::Complex *__restrict__& store,
172 : const casacore::Vector<casacore::Int>& iPos, const casacore::Vector<casacore::Int>& inc)
173 : {
174 : return *(store+(iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]));
175 : // return store[iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]];
176 : };
177 : inline casacore::DComplex getFrom4DArray(const casacore::DComplex *__restrict__& store,
178 : const casacore::Vector<casacore::Int>& iPos, const casacore::Vector<casacore::Int>& inc)
179 : {
180 : return *(store+(iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]));
181 : // return store[iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]];
182 : };
183 :
184 : template <class T>
185 0 : void addTo4DArray(T *__restrict__& store,
186 : const casacore::Int *__restrict__& iPos, const casacore::Vector<casacore::Int>& inc,
187 : casacore::Complex& nvalue, casacore::Complex& wt) __restrict__
188 : {
189 : // T *tmp=store+(iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]);
190 : // *tmp += nvalue*wt;
191 0 : store[iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]] += (nvalue*wt);
192 0 : }
193 :
194 : template <class T>
195 0 : void addTo4DArray_ptr(T *__restrict__& store,
196 : const casacore::Int *__restrict__& iPos,
197 : const casacore::Int *__restrict__& inc,
198 : casacore::Complex& nvalue, casacore::Complex& wt) __restrict__
199 : {
200 : // T *tmp=store+(iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]);
201 : // *tmp += nvalue*wt;
202 0 : store[iPos[0] + iPos[1]*inc[1] + iPos[2]*inc[2] +iPos[3]*inc[3]] += (nvalue*wt);
203 0 : }
204 :
205 : //
206 : // This rotates the convolution function by rotating the
207 : // co-ordinate system. For the accuracies already required for
208 : // EVLA and ALMA, this is not useful. Leaving it hear for now....
209 : //
210 : // casacore::Bool reindex(const casacore::Vector<casacore::Int>& in, casacore::Vector<casacore::Int>& out,
211 : // const casacore::Double& sinDPA, const casacore::Double& cosDPA,
212 : // const casacore::Vector<casacore::Int>& Origin, const casacore::Vector<casacore::Int>& size);
213 :
214 : casacore::Complex* getConvFunc_p(const double& vbPA,
215 : casacore::Vector<casacore::Int>& cfShape,
216 : casacore::Vector<int>& support,
217 : int& muellerElement,
218 : CountedPtr<CFBuffer>& cfb,
219 : casacore::Double& wVal, casacore::Int& fndx,
220 : casacore::Int& wndx,
221 : PolMapType& mNdx, PolMapType& conjMNdx,
222 : casacore::Int& ipol, casacore::uInt& mRow);
223 : void cachePhaseGrad_p(const casacore::Vector<casacore::Double>& pointingOffset,
224 : const casacore::Vector<casacore::Int>&cfShape,
225 : const casacore::Vector<casacore::Int>& convOrigin,
226 : const casacore::Double& cfRefFreq,
227 : const casacore::Double& imRefFreq,
228 : const casacore::Int& spwID=0, const casacore::Int& fieldId=0);
229 : };
230 : }; //# NAMESPACE CASA - END
231 : };
232 : #endif //
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