Line data    Source code

       1             : //# FTMachine.cc: Implementation of FTMachine class
       2             : //# Copyright (C) 1997,1998,2000,2001
       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 addressed 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             : //# $Id$
      27             : 
      28             : #include <msvis/MSVis/VisibilityIterator2.h>
      29             : #include <msvis/MSVis/VisBuffer2.h>
      30             : #include <casacore/casa/Quanta/Euler.h>
      31             : #include <casacore/casa/Quanta/RotMatrix.h>
      32             : #include <casacore/measures/Measures/MDirection.h>
      33             : #include <casacore/ms/MeasurementSets/MSColumns.h>
      34             : #include <casacore/casa/BasicSL/Constants.h>
      35             : #include <synthesis/TransformMachines2/ComponentFTMachine.h>
      36             : #include <casacore/casa/Arrays/ArrayMath.h>
      37             : #include <casacore/casa/Arrays/MatrixMath.h>
      38             : #include <casacore/casa/Arrays/Array.h>
      39             : #include <casacore/casa/Arrays/Vector.h>
      40             : #include <casacore/casa/Arrays/Matrix.h>
      41             : #include <casacore/casa/BasicSL/String.h>
      42             : #include <casacore/casa/Utilities/Assert.h>
      43             : #include <casacore/casa/Exceptions/Error.h>
      44             : #include <casacore/measures/Measures/UVWMachine.h>
      45             : #include <casacore/ms/MeasurementSets/MSColumns.h>
      46             : #include <casacore/casa/OS/Timer.h>
      47             : 
      48             : using namespace casacore;
      49             : namespace casa { //# NAMESPACE CASA - BEGIN
      50             : 
      51             : namespace refim{ //namespace for refator imaging
      52             : 
      53             : using namespace casacore;
      54             : using namespace casa;
      55             : using namespace casacore;
      56             : using namespace casa::refim;
      57             : using namespace casacore;
      58             : using namespace casa::vi;
      59             : //---------------------------------------------------------------------- 
      60          22 :   ComponentFTMachine::ComponentFTMachine() : numthreads_p(-1)
      61             : {
      62          22 : }
      63             : 
      64           0 : LogIO& ComponentFTMachine::logIO() {return logIO_p;};
      65             : 
      66             : //---------------------------------------------------------------------- 
      67             : ComponentFTMachine&
      68           0 : ComponentFTMachine::operator=(const ComponentFTMachine& other)
      69             : {
      70             :   if(this!=&other) {
      71             :   };
      72           0 :   return *this;
      73             : };
      74             : 
      75             : //----------------------------------------------------------------------
      76           0 : ComponentFTMachine::ComponentFTMachine(const ComponentFTMachine& other)
      77             : {
      78           0 :   operator=(other);
      79           0 : }
      80             : 
      81             : //----------------------------------------------------------------------
      82          22 : ComponentFTMachine::~ComponentFTMachine() {
      83          22 : }
      84             : 
      85           0 : void ComponentFTMachine::setnumthreads(const Int numthreads){
      86           0 :     numthreads_p=numthreads;
      87           0 : }
      88             : 
      89         600 : void ComponentFTMachine::rotateUVW(Matrix<Double>& uvw, Vector<Double>& dphase,
      90             :                                    const VisBuffer2& vb,
      91             :                                    const MDirection& mDesired)
      92             : {
      93             : 
      94             :   // 1. We need to convert this type (e.g. MDirection::SUN to the
      95             :   // type observed (e.g. MDirection::J2000). So first we get
      96             :   // the type and combine it with the specified frame that includes
      97             :   // the observing epoch. So we end up with e.g. the position of
      98             :   // the Sun on the specified epoch, expressed in J2000 coordinates.
      99             :   // We also add an MPosition as well so that for compact arrays we
     100             :   // can specify images in e.g. AZEL or HADEC.
     101             :   
     102         600 :   MSColumns msc(vb.ms());
     103        1200 :   MeasFrame mFrame((MEpoch(Quantity(vb.time()(0), 
     104        1200 :                                     msc.timeQuant()(0).getUnit() ),
     105        1200 :                            msc.timeMeas()(0).getRef())),
     106        1200 :                    msc.antenna().positionMeas()(0));
     107             : 
     108         600 :   UVWMachine uvwMachine(mDesired, vb.phaseCenter(), mFrame,
     109         600 :                         false, false);
     110             : 
     111             :   // Now we convert all rows and also calculate the
     112             :   // change in phase
     113         600 :   uInt nrows=dphase.nelements();
     114         600 :   Vector<Double> thisRow(3);
     115         600 :   thisRow=0.0;
     116             :   uInt i;
     117      211200 :   for (uInt row=0;row<nrows;row++) {
     118      842400 :     for (i=0;i<3;i++) thisRow(i)=uvw(i,row);
     119      210600 :     uvwMachine.convertUVW(dphase(row), thisRow);
     120      842400 :     for (i=0;i<3;i++) uvw(i,row)=thisRow(i);
     121             :   }
     122             : 
     123         600 : }
     124             : 
     125           0 : void ComponentFTMachine::rotateUVW(Double*& uvw, Double*& dphase, const Int nrows, 
     126             :                                    const VisBuffer2& vb,
     127             :                                    const MDirection& mDesired)
     128             : {
     129             : 
     130             :   // 1. We need to convert this type (e.g. MDirection::SUN to the
     131             :   // type observed (e.g. MDirection::J2000). So first we get
     132             :   // the type and combine it with the specified frame that includes
     133             :   // the observing epoch. So we end up with e.g. the position of
     134             :   // the Sun on the specified epoch, expressed in J2000 coordinates.
     135             :   // We also add an MPosition as well so that for compact arrays we
     136             :   // can specify images in e.g. AZEL or HADEC.
     137           0 :   MSColumns msc(vb.ms());
     138           0 :   MeasFrame mFrame((MEpoch(Quantity(vb.time()(0), msc.timeQuant()(0).getUnit()), msc.timeMeas()(0).getRef())), msc.antenna().positionMeas()(0));
     139             : 
     140             : 
     141           0 :   UVWMachine uvwMachine(mDesired, vb.phaseCenter(), mFrame,
     142           0 :                         false, false);
     143             : 
     144             :   // Now we convert all rows and also calculate the
     145             :   // change in phase
     146           0 :   Vector<Double> thisRow(3);
     147           0 :   thisRow=0.0;
     148             :   uInt i;
     149           0 :   for (Int row=0;row<nrows;row++) {
     150           0 :     for (i=0;i<3;i++) thisRow(i)=uvw[row*3+i];
     151           0 :     uvwMachine.convertUVW(dphase[row], thisRow);
     152           0 :     for (i=0;i<3;i++) uvw[row*3+i]=thisRow(i);
     153             :   }
     154             : 
     155           0 : }
     156             : 
     157           0 : void ComponentFTMachine::ok() {
     158           0 : }
     159             : 
     160             : 
     161             : 
     162             : 
     163             : 
     164             : } //end namespce refim
     165             : } //# NAMESPACE CASA - END
     166             :