AnnPolygon.h

Go to the documentation of this file.

//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#

#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;

protected:
        // for rectangle subclasses
        AnnPolygon(
                AnnotationBase::Type shape,
                const Quantity& blcx,
                const Quantity& blcy,
                const Quantity& trcx,
                const Quantity& trcy,
                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).
        // blcx, blcy, trcx, and trcy
        // 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(
                AnnotationBase::Type shape,
                const Quantity& blcx,
                const Quantity& blcy,
                const Quantity& trcx,
                const Quantity& trcy,
                const CoordinateSystem& csys,
                const IPosition& imShape,
                const Vector<Stokes::StokesTypes>& stokes
        );

        // For centered rectangles
        AnnPolygon(
                AnnotationBase::Type shape,
                const Quantity& centerx,
                const Quantity& centery,
                const Quantity& widthx,
                const Quantity& widthy,
                const Quantity& positionAngle,
                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).
                // centerx and centery
                // 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(
                        AnnotationBase::Type shape,
                        const Quantity& centerx,
                        const Quantity& centery,
                        const Quantity& widthx,
                        const Quantity& widthy,
                        const Quantity& positionAngle,
                        const CoordinateSystem& csys,
                        const IPosition& imShape,
                        const Vector<Stokes::StokesTypes>& stokes
                );

private:
        Vector<Quantity> _origXPos, _origYPos;

        void _init();

        void _initCorners(
                const Quantity& blcx,
                const Quantity& blcy,
                const Quantity& trcx,
                const Quantity& trcy
        );

        void _initCorners(
                const MDirection& blc,
                const MDirection& corner2,
                const MDirection& trc,
                const MDirection& corner4
        );

        void _initCenterRectCorners(
                const Quantity& centerx,
                const Quantity& centery,
                const Quantity& widthx,
                const Quantity& widthy,
                const Quantity& positionAngle
        );

        void _doCorners(const Quantity& widthx, const Quantity widthy);

};

}

#endif /* ASCIIPOLYGONREGION_H_ */