AnnPolygon.h

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#ifndef ANNOTATIONS_ANNPOLYGON_H
#define ANNOTATIONS_ANNPOLYGON_H

#include <casa/aips.h>
#include <imageanalysis/Annotations/AnnRegion.h>

namespace casa {

// <summary>
// This class represents a single polygon (in position coordinates) annotation specified
// in an ascii region file as proposed in CAS-2285
// </summary>
// <author>Dave Mehringer</author>
// <use visibility=export>
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
// <prerequisite>

// </prerequisite>

// <etymology>
// Holds the specification of a polygon annotation.
// </etymology>

// <synopsis>
// This class represents a polygon annotation.
// </synopsis>


class AnnPolygon: public AnnRegion {

public:

        AnnPolygon(
                const Vector<Quantity>& xPositions,
                const Vector<Quantity>& yPositions,
                const String& dirRefFrameString,
                const CoordinateSystem& csys,
                const IPosition& imShape,
                const Quantity& beginFreq,
                const Quantity& endFreq,
                const String& freqRefFrameString,
                const String& dopplerString,
                const Quantity& restfreq,
                const Vector<Stokes::StokesTypes> stokes,
                const Bool annotationOnly
        );

        // Simplified constructor.
        // all frequencies are used (these can be set after construction).
        // xPositions and yPositions
        // must be in the same frame as the csys direction coordinate.
        // is a region (not just an annotation), although this value can be changed after
        // construction.
        AnnPolygon(
                const Vector<Quantity>& xPositions,
                const Vector<Quantity>& yPositions,
                const CoordinateSystem& csys,
                const IPosition& imShape,
                const Vector<Stokes::StokesTypes>& stokes
        );

        // implicit copy constructor and destructor are fine

        AnnPolygon& operator=(const AnnPolygon& other);

        // get the vertices converted to the coordinate system used at construction.
        Vector<MDirection> getCorners() const;

        // get the world coordinates of the polygon vertices
        void worldVertices(vector<Quantity>& x, vector<Quantity>& y) const;

        // get the pixel coordinates of the polygon vertices
        void pixelVertices(vector<Double>& x, vector<Double>& y) const;


        virtual ostream& print(ostream &os) const;

private:
        Vector<Quantity> _origXPos, _origYPos;

        void _init();
};

}

#endif /* ASCIIPOLYGONREGION_H_ */