Polygon.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@kbt.io>
 * 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)
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
#include <string>
#include <vector>
#include <geos/geom/Geometry.h> // for inheritance
#include <geos/geom/Envelope.h> // for proper use of unique_ptr<>
#include <geos/geom/LinearRing.h>
#include <geos/geom/Dimension.h> // for Dimension::DimensionType
 
#include <memory> // for unique_ptr
 
// Forward declarations
namespace geos {
namespace geom { // geos::geom
class Coordinate;
class CoordinateArraySequence;
class CoordinateSequenceFilter;
class LineString;
}
}
 
namespace geos {
namespace geom { // geos::geom
 
class GEOS_DLL Polygon: public Geometry {
 
public:
 
    friend class GeometryFactory;
 
    typedef std::vector<const Polygon*> ConstVect;
 
    ~Polygon() override = default;
 
    std::unique_ptr<Polygon> clone() const
    {
        return std::unique_ptr<Polygon>(cloneImpl());
    }
 
    std::unique_ptr<CoordinateSequence> getCoordinates() const override;
 
    std::size_t getNumPoints() const override;
 
    Dimension::DimensionType getDimension() const override;
 
    uint8_t getCoordinateDimension() const override;
 
    int getBoundaryDimension() const override;
 
    std::unique_ptr<Geometry> getBoundary() const override;
 
    bool isEmpty() const override;
 
    const LinearRing* getExteriorRing() const;
 
    std::unique_ptr<LinearRing> releaseExteriorRing();
 
    std::size_t getNumInteriorRing() const;
 
    const LinearRing* getInteriorRingN(std::size_t n) const;
 
    std::vector<std::unique_ptr<LinearRing>> releaseInteriorRings();
 
    std::string getGeometryType() const override;
    GeometryTypeId getGeometryTypeId() const override;
    bool equalsExact(const Geometry* other, double tolerance = 0) const override;
    void apply_rw(const CoordinateFilter* filter) override;
    void apply_ro(CoordinateFilter* filter) const override;
    void apply_rw(GeometryFilter* filter) override;
    void apply_ro(GeometryFilter* filter) const override;
    void apply_rw(CoordinateSequenceFilter& filter) override;
    void apply_ro(CoordinateSequenceFilter& filter) const override;
    void apply_rw(GeometryComponentFilter* filter) override;
    void apply_ro(GeometryComponentFilter* filter) const override;
 
    std::unique_ptr<Geometry> convexHull() const override;
 
    void normalize() override;
 
    std::unique_ptr<Polygon> reverse() const { return std::unique_ptr<Polygon>(reverseImpl()); }
 
    const Coordinate* getCoordinate() const override;
 
    double getArea() const override;
 
    double getLength() const override;
 
    bool isRectangle() const override;
 
protected:
 
 
    Polygon(const Polygon& p);
 
    int compareToSameClass(const Geometry* p) const override;
 
    Polygon(LinearRing* newShell, std::vector<LinearRing*>* newHoles,
            const GeometryFactory* newFactory);
 
    Polygon(std::unique_ptr<LinearRing> && newShell,
            const GeometryFactory& newFactory);
 
    Polygon(std::unique_ptr<LinearRing> && newShell,
            std::vector<std::unique_ptr<LinearRing>> && newHoles,
            const GeometryFactory& newFactory);
 
    Polygon* cloneImpl() const override { return new Polygon(*this); }
 
    Polygon* reverseImpl() const override;
 
    std::unique_ptr<LinearRing> shell;
 
    std::vector<std::unique_ptr<LinearRing>> holes;
 
    Envelope::Ptr computeEnvelopeInternal() const override;
 
    int
    getSortIndex() const override
    {
        return SORTINDEX_POLYGON;
    };
 
 
private:
 
    void normalize(LinearRing* ring, bool clockwise);
 
};
 
} // namespace geos::geom
} // namespace geos