MCIndexSnapRounder.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 Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: noding/snapround/MCIndexSnapRounder.java r486 (JTS-1.12+)
 *
 **********************************************************************/
 
#ifndef GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
#define GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
 
#include <geos/export.h>
 
#include <geos/noding/Noder.h> // for inheritance
#include <geos/noding/NodedSegmentString.h> // for inlines
#include <geos/noding/snapround/MCIndexPointSnapper.h> // for inines
#include <geos/algorithm/LineIntersector.h> // for composition
#include <geos/geom/Coordinate.h> // for use in vector
#include <geos/geom/PrecisionModel.h> // for inlines
 
#include <vector>
 
#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 algorithm {
                class LineIntersector;
        }
        namespace noding {
                class SegmentString;
                class MCIndexNoder;
        }
}
 
namespace geos {
namespace noding { // geos::noding
namespace snapround { // geos::noding::snapround
 

class GEOS_DLL MCIndexSnapRounder: public Noder { // implments Noder
 
public:
 
        MCIndexSnapRounder(const geom::PrecisionModel& nPm)
    :
                pm(nPm),
                scaleFactor(nPm.getScale()),
                pointSnapper(0)
  {
    li.setPrecisionModel(&pm);
  }
 
        std::vector<SegmentString*>* getNodedSubstrings() const {
          return NodedSegmentString::getNodedSubstrings(*nodedSegStrings);
  }
 
        void computeNodes(std::vector<SegmentString*>* segStrings);
 
        void computeVertexSnaps(std::vector<SegmentString*>& edges);
 
private:

        const geom::PrecisionModel& pm;
 
        algorithm::LineIntersector li;
 
        double scaleFactor;
 
        std::vector<SegmentString*>* nodedSegStrings;
 
        std::auto_ptr<MCIndexPointSnapper> pointSnapper;
 
        void snapRound(MCIndexNoder& noder, std::vector<SegmentString*>* segStrings);
 
        
        void findInteriorIntersections(MCIndexNoder& noder,
                        std::vector<SegmentString*>* segStrings,
                        std::vector<geom::Coordinate>& intersections);

        void computeIntersectionSnaps(std::vector<geom::Coordinate>& snapPts);

        void computeVertexSnaps(NodedSegmentString* e);
        
        void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings);
 
    // Declare type as noncopyable
    MCIndexSnapRounder(const MCIndexSnapRounder& other);
    MCIndexSnapRounder& operator=(const MCIndexSnapRounder& rhs);
};
 
} // namespace geos::noding::snapround
} // namespace geos::noding
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H