Line data    Source code

       1             : //# PSTerm.h: Definition for PSTerm
       2             : //# Copyright (C) 2007
       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 Library 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 Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library 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: aips2-request@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             : 
      29             : #ifndef SYNTHESIS_PSTERM_H
      30             : #define SYNTHESIS_PSTERM_H
      31             : 
      32             : 
      33             : #include <casacore/casa/Arrays/Vector.h>
      34             : #include <msvis/MSVis/VisBuffer.h>
      35             : #include <casacore/images/Images/ImageInterface.h>
      36             : #include <casacore/images/Images/PagedImage.h>
      37             : #include <casacore/images/Images/TempImage.h>
      38             : #include <casacore/scimath/Mathematics/ConvolveGridder.h>
      39             : #include <synthesis/TransformMachines/CFStore.h>
      40             : #include <synthesis/TransformMachines/CFTerms.h>
      41             : 
      42             : namespace casa{
      43             :   // <summary>  A class to apply the W-Term to the given image </summary>
      44             :   
      45             :   // <use visibility=export>
      46             :   // <prerequisite>
      47             :   // </prerequisite>
      48             :   // <etymology>
      49             :   // W-Term to account for non co-planar baselines
      50             :   // </etymology>
      51             :   //
      52             :   // <synopsis> 
      53             :   // 
      54             :   //</synopsis>
      55             :   class PSTerm: public CFTerms
      56             :   {
      57             :   public:
      58           0 :     PSTerm(): CFTerms() {};
      59             :     PSTerm (const casacore::IPosition shape, 
      60             :             const casacore::Vector<casacore::Double>& uvScale,
      61             :             const casacore::Vector<casacore::Double>& uvOffset,
      62             :             const casacore::Double& psScale):psCtor_p() 
      63             :     {init(shape,uvScale,uvOffset,psScale);};
      64             : 
      65           0 :     virtual ~PSTerm () {};
      66             : 
      67             :     void init(const casacore::IPosition shape, 
      68             :               const casacore::Vector<casacore::Double>& uvScale,
      69             :               const casacore::Vector<casacore::Double>& uvOffset,
      70             :               const casacore::Double& psScale);
      71             :     casacore::Matrix<casacore::Complex>& operator=(casacore::Matrix<casacore::Complex>&);
      72             :     casacore::Matrix<casacore::Complex>& operator*=(casacore::Matrix<casacore::Complex>&);
      73             : 
      74             :     void applySky(casacore::Matrix<casacore::Complex>& screen,casacore::Bool multiply=false);
      75             :     void applySky(casacore::Matrix<casacore::Complex>& screen, 
      76             :                   const casacore::Vector<casacore::Double>& sampling,
      77             :                   const casacore::Int inner);
      78             :     void normalizeImage(casacore::Lattice<casacore::Complex>& skyImage,
      79             :                         const casacore::Matrix<casacore::Float>& weights);
      80           0 :     virtual casacore::String name() {return casacore::String("PS Term");};
      81             : 
      82             :     //----------------------------------------------------------
      83             :     // Implementation of pure-virtual methods of CFTerms parent class.
      84             :     // CFTerms (and its derived classes) ned clean-up so that this
      85             :     // kind of code is not required everywhere).
      86           0 :     int getVisParams(const VisBuffer& vb,const casacore::CoordinateSystem& skyCoord=casacore::CoordinateSystem()) 
      87           0 :     {(void)vb;(void)skyCoord;return 0;};
      88             : 
      89           0 :     void setPolMap(const casacore::Vector<casacore::Int>& polMap) {(void)polMap;};
      90             : 
      91           0 :     virtual casacore::Float getSupportThreshold() {return 1e-3;};
      92             : 
      93           0 :     void applySky(casacore::ImageInterface<casacore::Float>&,// outputImages,
      94             :                   const VisBuffer&,// vb, 
      95             :                   const casacore::Bool,// doSquint=true,
      96             :                   const casacore::Int&,// cfKey=0,
      97             :                   const casacore::Int&,// muellerTerm=0,
      98             :                   const casacore::Double /*freqVal=-1*/) 
      99           0 :     {};
     100             : 
     101           0 :     void applySky(casacore::ImageInterface<casacore::Complex>&,// outputImages,
     102             :                   const VisBuffer&,// vb, 
     103             :                   const casacore::Bool,// doSquint=true,
     104             :                   const casacore::Int&,// cfKey=0,
     105             :                   const casacore::Int&,// muellerTerm=0,
     106             :                   const casacore::Double /*freqVal= -1*/ ) 
     107           0 :     {};
     108             : 
     109           0 :     casacore::Vector<casacore::Int> vbRow2CFKeyMap(const VisBuffer& /*vb*/, casacore::Int& /*nUnique*/) 
     110           0 :     {casacore::Vector<casacore::Int> tt;return tt;};
     111             : 
     112           0 :     casacore::Int makePBPolnCoords(const VisBuffer&,// vb,
     113             :                          const casacore::Int&,// convSize,
     114             :                          const casacore::Int&,// convSampling,
     115             :                          const casacore::CoordinateSystem&,// skyCoord,
     116             :                          const casacore::Int&,// skyNx, 
     117             :                          const casacore::Int&,// skyNy,
     118             :                          casacore::CoordinateSystem&// feedCoord
     119             :                          ) 
     120           0 :     {return 0;};
     121             : 
     122           0 :     casacore::Int getConvSize() {return 0;};
     123           0 :     casacore::Int getOversampling() {return 50;};
     124           0 :     casacore::Float getConvWeightSizeFactor() {return 1.0;};
     125             : 
     126           0 :     casacore::Bool rotationallySymmetric() {return true;};
     127             : 
     128             :   private:
     129             :     // spheroidal function
     130             :     casacore::CountedPtr<casacore::ConvolveGridder<casacore::Double, casacore::Complex> > psCtor_p;
     131             :     casacore::Vector<casacore::Double>  support_p;
     132             :     casacore::Vector<casacore::Int> sampling_p;
     133             :     casacore::Double psScale_p;
     134             :   };
     135             : 
     136             : };
     137             : 
     138             : #endif