Polygon.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
 * Copyright (C) 2005 2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: geom/Polygon.java r320 (JTS-1.12)
 *
 **********************************************************************/
 
#ifndef GEOS_GEOM_POLYGON_H
#define GEOS_GEOM_POLYGON_H
 
#include <geos/export.h>
#include <string>
#include <vector>
#include <geos/platform.h>
#include <geos/geom/Geometry.h> // for inheritance
#include <geos/geom/Polygonal.h> // for inheritance
#include <geos/geom/Envelope.h> // for proper use of auto_ptr<>
#include <geos/geom/Dimension.h> // for Dimension::DimensionType
 
#include <geos/inline.h>
 
#include <memory> // for auto_ptr
 
// Forward declarations
namespace geos {
        namespace geom { // geos::geom
                class Coordinate;
                class CoordinateArraySequence;
                class CoordinateSequenceFilter;
                class LinearRing;
                class LineString;
        }
}
 
namespace geos {
namespace geom { // geos::geom

class GEOS_DLL Polygon: public virtual Geometry, public Polygonal
{
 
public:
 
        friend class GeometryFactory;

        typedef std::vector<const Polygon *> ConstVect;
 
        virtual ~Polygon();

        virtual Geometry *clone() const { return new Polygon(*this); }
 
        CoordinateSequence* getCoordinates() const;
 
        size_t getNumPoints() const;

        Dimension::DimensionType getDimension() const;

        virtual int getCoordinateDimension() const;

        int getBoundaryDimension() const;

        Geometry* getBoundary() const;
 
        bool isEmpty() const;

        bool isSimple() const;
        
        const LineString* getExteriorRing() const;

        size_t getNumInteriorRing() const;

        const LineString* getInteriorRingN(std::size_t n) const;
 
        std::string getGeometryType() const;
        virtual GeometryTypeId getGeometryTypeId() const;
        bool equalsExact(const Geometry *other, double tolerance=0) const;
        void apply_rw(const CoordinateFilter *filter);
        void apply_ro(CoordinateFilter *filter) const;
        void apply_rw(GeometryFilter *filter);
        void apply_ro(GeometryFilter *filter) const;
        void apply_rw(CoordinateSequenceFilter& filter);
        void apply_ro(CoordinateSequenceFilter& filter) const;
 
        Geometry* convexHull() const;
 
        void normalize();
 
        int compareToSameClass(const Geometry *p) const; //was protected
 
        const Coordinate* getCoordinate() const;
 
        double getArea() const;

        double getLength() const;
 
        void apply_rw(GeometryComponentFilter *filter);
 
        void apply_ro(GeometryComponentFilter *filter) const;
 
        bool isRectangle() const;
 
protected:
 
 
        Polygon(const Polygon &p);

        Polygon(LinearRing *newShell, std::vector<Geometry *> *newHoles,
                const GeometryFactory *newFactory);
 
        LinearRing *shell;
 
        std::vector<Geometry *> *holes; //Actually vector<LinearRing *>
 
        Envelope::AutoPtr computeEnvelopeInternal() const;
 
private:
 
        void normalize(LinearRing *ring, bool clockwise);
};
 
} // namespace geos::geom
} // namespace geos
 
#endif // ndef GEOS_GEOM_POLYGON_H