PeakIntensityFluxDensityConverter.h

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//# tSubImage.cc: Test program for class SubImage
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//# $Id: tSubImage.cc 20567 2009-04-09 23:12:39Z gervandiepen $

#ifndef IMAGEANALYSIS_PEAKINTENSITYFLUXDENSITYCONVERTER_H
#define IMAGEANALYSIS_PEAKINTENSITYFLUXDENSITYCONVERTER_H

#include <imageanalysis/ImageAnalysis/ImageTask.h>

#include <components/ComponentModels/ComponentType.h>
#include <scimath/Mathematics/GaussianBeam.h>

#include <casa/namespace.h>

namespace casa {

class PeakIntensityFluxDensityConverter : public ImageTask<Float> {
        // <summary>
        // Class for converting between peak intensity and flux density of a source
        // of specified shape.
        // </summary>

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

        // <prerequisite>
        // </prerequisite>

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

        // <synopsis>
        // </synopsis>

        // <example>
        // <srcblock>
        // </srcblock>
        // </example>

public:
    using Angular2DGaussian = GaussianBeam;

    // Specify image to get beam and coordinate info from
        PeakIntensityFluxDensityConverter(
                const SPCIIF image
        );

        // destructor
        ~PeakIntensityFluxDensityConverter();

        // set the source size using a GaussianShape object. Note that this in itself,
        // does not constrain the shape to be Gaussian, it is just used to set the size
        // (and puts the burden on the caller to do sanity checking by first constructing
        // a GaussianSource object). The position angle is not used.
        void setSize(const Angular2DGaussian& size) { _size = size; }

        // set the component shape

        void setShape(const String& shape) { _shape = ComponentType::shape(shape); }

        void setShape (ComponentType::Shape shape) { _shape = shape; }

        // Given the channel and polarization, determine which beam in the
        // image to use for the resolution area.
        void setBeam(Int channel, Int polarization);

        Quantity fluxDensityToPeakIntensity(
                Bool& hadToMakeFakeBeam, const Quantity& fluxDensity
        ) const;

        Quantity peakIntensityToFluxDensity(
                Bool& hadToMakeFakeBeam, const Quantity& fluxDensity
        ) const;

        String getClass() const {
                static const String s = "PeakIntensityFluxDensityConverter";
                return s;
        }

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

        inline vector<Coordinate::Type> _getNecessaryCoordinates() const {
                return vector<Coordinate::Type>(1, Coordinate::DIRECTION);
        }

private:

        Angular2DGaussian _size;
        ComponentType::Shape _shape;
        GaussianBeam _beam;



};
}

#endif