LinearRing.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005 2006 Refractions Research 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/LinearRing.java r320 (JTS-1.12)
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
#include <string>
#include <vector>
#include <geos/geom/LineString.h>
 
 
// Forward declarations
namespace geos {
namespace geom { // geos::geom
class Coordinate;
}
}
 
namespace geos {
namespace geom { // geos::geom
 
class GEOS_DLL LinearRing : public LineString {
 
public:
 
    static const unsigned int MINIMUM_VALID_SIZE = 3;
 
    LinearRing(const LinearRing& lr);
 
    LinearRing(CoordinateSequence::Ptr && points,
            const GeometryFactory& newFactory);
 
    LinearRing(const std::shared_ptr<const CoordinateSequence>& points,
            const GeometryFactory& newFactory);
 
    std::unique_ptr<LinearRing> clone() const
    {
        return std::unique_ptr<LinearRing>(cloneImpl());
    }
 
    ~LinearRing() override = default;
 
    int getBoundaryDimension() const override;
 
    bool isClosed() const override;
 
    std::string getGeometryType() const override;
 
    GeometryTypeId getGeometryTypeId() const override;
 
    void setPoints(const CoordinateSequence* cl);
 
    std::unique_ptr<LinearRing> reverse() const { return std::unique_ptr<LinearRing>(reverseImpl()); }
 
    void orient(bool isCW);
 
protected:
 
    int
    getSortIndex() const override
    {
        return SORTINDEX_LINEARRING;
    };
 
    LinearRing* cloneImpl() const override { return new LinearRing(*this); }
 
    LinearRing* reverseImpl() const override;
 
private:
 
    void validateConstruction();
};
 
 
} // namespace geos::geom
} // namespace geos