ImagePadder.h

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//# tSubImage.cc: Test program for class SubImage
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//# Associated Universities, Inc. Washington DC, USA.
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//# $Id: tSubImage.cc 20567 2009-04-09 23:12:39Z gervandiepen $

#ifndef IMAGES_IMAGEPADDER_H
#define IMAGES_IMAGEPADDER_H

#include <imageanalysis/ImageAnalysis/ImageTask.h>

#include <casa/namespace.h>


namespace casacore{

class MDirection;
}

namespace casa {

class ImagePadder : public ImageTask<casacore::Float> {
        // <summary>
        // Top level interface for padding an image in direction space.
        // </summary>

        // <reviewed reviewer="" date="" tests="" demos="">
        // </reviewed>

        // <prerequisite>
        // </prerequisite>

        // <etymology>
        // Collapses image.
        // </etymology>

        // <synopsis>
        // High level interface for padding an image.
        // </synopsis>

        // <example>
        // <srcblock>
        // ImagePadder padder();
        // padder.pad();
        // </srcblock>
        // </example>

public:
        // <group>

        ImagePadder(
                        const SPCIIF  image,
                const casacore::Record *const regionRec=0,
                const casacore::String& box="", const casacore::String& chanInp="",
                const casacore::String& stokes="", const casacore::String& maskInp="",
                const casacore::String& outname="", const casacore::Bool overwrite=""
        );

        // </group>

        // destructor
        ~ImagePadder();

        // perform the padding. If <src>wantReturn</src> is true, return a pointer to the
        // padded image. The returned pointer is created via new(); it is the caller's
        // responsibility to delete the returned pointer. If <src>wantReturn</src> is false,
        // a NULL pointer is returned and pointer deletion is performed internally.
        SPIIF pad(const casacore::Bool wantReturn) const;

        // set the number of pixels to use for padding and their values and if they should be
        // masked on each edge of the direction plane. <src>good</src>=true means the padding
        // pixels will not be masked (set to good, mask values = true).
        void setPaddingPixels(const casacore::uInt nPixels, const casacore::Double value=0, const casacore::Bool good=false);

        casacore::String getClass() const;

protected:
        inline  CasacRegionManager::StokesControl _getStokesControl() const {
                return CasacRegionManager::USE_ALL_STOKES;
        }

        inline std::vector<casacore::Coordinate::Type> _getNecessaryCoordinates() const {
                std::vector<casacore::Coordinate::Type> v;
                v.push_back(casacore::Coordinate::DIRECTION);
                return v;
        }

private:
        casacore::uInt _nPixels;
        casacore::Double _value;
        casacore::Bool _good;
        static const casacore::String _class;

        // disallow default constructor
        ImagePadder();
};
}

#endif