Line data    Source code

       1             : //# Copyright (C) 1998,1999,2000,2001,2003
       2             : //# Associated Universities, Inc. Washington DC, USA.
       3             : //#
       4             : //# This program is free software; you can redistribute it and/or modify it
       5             : //# under the terms of the GNU General Public License as published by the Free
       6             : //# Software Foundation; either version 2 of the License, or (at your option)
       7             : //# any later version.
       8             : //#
       9             : //# This program is distributed in the hope that it will be useful, but WITHOUT
      10             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      11             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
      12             : //# more details.
      13             : //#
      14             : //# You should have received a copy of the GNU General Public License along
      15             : //# with this program; if not, write to the Free Software Foundation, Inc.,
      16             : //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      17             : //#
      18             : //# Correspondence concerning AIPS++ should be addressed as follows:
      19             : //#        Internet email: casa-feedback@nrao.edu.
      20             : //#        Postal address: AIPS++ Project Office
      21             : //#                        National Radio Astronomy Observatory
      22             : //#                        520 Edgemont Road
      23             : //#                        Charlottesville, VA 22903-2475 USA
      24             : //#
      25             : 
      26             : #ifndef IMAGEANALYSIS_IMAGEREGRIDDER_H
      27             : #define IMAGEANALYSIS_IMAGEREGRIDDER_H
      28             : 
      29             : #include <imageanalysis/ImageAnalysis/ImageRegridderBase.h>
      30             : 
      31             : #include <casacore/casa/namespace.h>
      32             : 
      33             : namespace casacore{
      34             : 
      35             : template <class T> class SubImage;
      36             : template <class T> class TempImage;
      37             : }
      38             : 
      39             : namespace casa {
      40             : 
      41             : 
      42             : template<class T> class ImageRegridder : public ImageRegridderBase<T> {
      43             :         // <summary>
      44             :         // Top level interface which regrids an image to a specified coordinate
      45             :     // system
      46             :         // </summary>
      47             : 
      48             :         // <reviewed reviewer="" date="" tests="" demos="">
      49             :         // </reviewed>
      50             : 
      51             :         // <prerequisite>
      52             :         // </prerequisite>
      53             : 
      54             :         // <etymology>
      55             :         // Regrids image.
      56             :         // </etymology>
      57             : 
      58             :         // <synopsis>
      59             :         // High level interface for regridding an image. Note that in the case of a
      60             :     // complex-valued image, the image is first divided into its composite real
      61             :     // and imaginary parts, and these parts are regridded independently. The
      62             :     // resulting regridded images are combined to form the final regridded
      63             :     // complex-valued image.
      64             :         // </synopsis>
      65             : 
      66             : public:
      67             : 
      68             :         ImageRegridder() = delete;
      69             : 
      70             :         // if <src>outname</src> is empty, no image will be written
      71             :         // if <src>overwrite</src> is true, if image already exists it will be
      72             :         // removed if <src>overwrite</src> is false, if image already exists
      73             :         // exception will be thrown
      74             :         // <group>
      75             : 
      76             :         ImageRegridder(
      77             :                 const SPCIIT image, const casacore::Record *const regionRec,
      78             :                 const casacore::String& maskInp, const casacore::String& outname,
      79             :                 casacore::Bool overwrite, const casacore::CoordinateSystem& csysTo,
      80             :                 const casacore::IPosition& axes, const casacore::IPosition& shape
      81             :         );
      82             : 
      83             :         // FIXME Add support to allow image and templateIm to be of different data
      84             :         // types
      85             :         ImageRegridder(
      86             :                 const SPCIIT image, const casacore::String& outname,
      87             :                 const SPCIIT templateIm,
      88             :                 const casacore::IPosition& axes=casacore::IPosition(),
      89             :                 const casacore::Record *const regionRec=0,
      90             :                 const casacore::String& maskInp="", casacore::Bool overwrite=false,
      91             :                 const casacore::IPosition& shape=casacore::IPosition()
      92             :         );
      93             :         // </group>
      94             : 
      95             :         // destructor
      96             :         ~ImageRegridder();
      97             : 
      98             :         // perform the regrid.
      99             :         SPIIT regrid() const;
     100             : 
     101           0 :         inline casacore::String getClass() const { return _class; }
     102             : 
     103             :         void setDebug(casacore::Int debug) { _debug = debug; }
     104             : 
     105             : private:
     106             :         mutable SPIIT _subimage;
     107             :         casacore::Int _debug;
     108             :         static const casacore::String _class;
     109             : 
     110             :         SPIIT _regrid() const;
     111             : 
     112             :         SPIIT _regridByVelocity() const;
     113             : 
     114             :         casacore::Bool _doImagesOverlap(SPCIIT image0, SPCIIT image1) const;
     115             : 
     116             :         static casacore::Vector<std::pair<casacore::Double, casacore::Double> >
     117             :         _getDirectionCorners(
     118             :                 const casacore::DirectionCoordinate& dc,
     119             :                 const casacore::IPosition& directionShape
     120             :         );
     121             : 
     122             :         void _checkOutputShape(
     123             :                 const casacore::SubImage<T>& subImage,
     124             :                 const std::set<casacore::Coordinate::Type>& coordsToRegrid
     125             :         ) const;
     126             : 
     127             :         SPIIT _decimateStokes(SPIIT workIm) const;
     128             : 
     129             :         static casacore::Bool _doRectanglesIntersect(
     130             :                 const casacore::Vector<
     131             :                     std::pair<casacore::Double, casacore::Double>
     132             :             >& corners0,
     133             :                 const casacore::Vector<
     134             :                     std::pair<casacore::Double, casacore::Double>
     135             :             >& corners1
     136             :         );
     137             : 
     138             : };
     139             : }
     140             : 
     141             : #ifndef CASACORE_NO_AUTO_TEMPLATES
     142             : #include <imageanalysis/ImageAnalysis/ImageRegridder.tcc>
     143             : #endif
     144             : 
     145             : #endif