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.
 *
 **********************************************************************/
 
#ifndef GEOS_SIMPLIFY_TAGGEDLINESTRING_H
#define GEOS_SIMPLIFY_TAGGEDLINESTRING_H
 
#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;
        }
}
 
namespace geos {
namespace simplify { // geos::simplify
 

class GEOS_DLL TaggedLineString {
 
public:
 
        typedef std::vector<geom::Coordinate> CoordVect;
        
        typedef std::auto_ptr<CoordVect> CoordVectPtr;
 
        typedef geom::CoordinateSequence CoordSeq;
 
        typedef std::auto_ptr<geom::CoordinateSequence> CoordSeqPtr;
 
        TaggedLineString(const geom::LineString* nParentLine,
                        std::size_t minimumSize=2);
 
        ~TaggedLineString();
 
        std::size_t getMinimumSize() const;
 
        const geom::LineString* getParent() const;
 
        const CoordSeq* getParentCoordinates() const;
 
        CoordSeqPtr getResultCoordinates() 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;
 
        void addToResult(std::auto_ptr<TaggedLineSegment> seg);
 
        std::auto_ptr<geom::Geometry> asLineString() const;
 
        std::auto_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;
 
        void init();
 
        static CoordVectPtr 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
 
#endif // GEOS_SIMPLIFY_TAGGEDLINESTRING_H