TaggedLineString.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: simplify/TaggedLineString.java rev. 1.2 (JTS-1.7.1)
 *
 **********************************************************************
 *
 * NOTES: This class can be optimized to work with vector<Coordinate*>
 *        rather then with CoordinateSequence. Also, LineSegment should
 *        be replaced with a class not copying Coordinates.
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
#include <vector>
#include <memory>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
class CoordinateSequence;
class Geometry;
class LineString;
class LinearRing;
}
namespace simplify {
class TaggedLineSegment;
}
}
 
using geos::geom::Coordinate;
using geos::geom::CoordinateSequence;
 
namespace geos {
namespace simplify { // geos::simplify
 
 
class GEOS_DLL TaggedLineString {
 
public:
 
    typedef std::vector<Coordinate> CoordVect;
 
    typedef std::unique_ptr<CoordVect> CoordVectPtr;
 
    typedef CoordinateSequence CoordSeq;
 
    typedef std::unique_ptr<CoordinateSequence> CoordSeqPtr;
 
    TaggedLineString(const geom::LineString* nParentLine,
                     std::size_t minimumSize,
                     bool bIsRing);
 
    ~TaggedLineString();
 
    std::size_t getMinimumSize() const;
 
    bool isRing() const;
 
    const geom::LineString* getParent() const;
 
    const CoordSeq* getParentCoordinates() const;
 
    CoordSeqPtr getResultCoordinates() const;
 
    const Coordinate& getCoordinate(std::size_t i) const;
 
    std::size_t size() const;
 
    const Coordinate& getComponentPoint() const;
 
    std::size_t getResultSize() const;
 
    TaggedLineSegment* getSegment(std::size_t i);
 
    const TaggedLineSegment* getSegment(std::size_t i) const;
 
    std::vector<TaggedLineSegment*>& getSegments();
 
    const std::vector<TaggedLineSegment*>& getSegments() const;
 
    const std::vector<TaggedLineSegment*>& getResultSegments() const;
 
    void addToResult(std::unique_ptr<TaggedLineSegment> seg);
 
    void removeRingEndpoint();
 
    std::unique_ptr<geom::Geometry> asLineString() const;
 
    std::unique_ptr<geom::Geometry> asLinearRing() const;
 
private:
 
    const geom::LineString* parentLine;
 
    // TaggedLineSegments owned by this object
    std::vector<TaggedLineSegment*> segs;
 
    // TaggedLineSegments owned by this object
    std::vector<TaggedLineSegment*> resultSegs;
 
    std::size_t minimumSize;
 
    bool m_isRing;
 
    void init();
 
    static std::unique_ptr<CoordinateSequence> extractCoordinates(
        const std::vector<TaggedLineSegment*>& segs);
 
    // Copying is turned off
    TaggedLineString(const TaggedLineString&);
    TaggedLineString& operator= (const TaggedLineString&);
 
};
 
} // namespace geos::simplify
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif