SnappingNoder.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2020 Paul Ramsey <pramsey@cleverelephant.ca>
 *
 * 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/snap/SnappingNoder.java
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
 
#include <geos/geom/Coordinate.h>
#include <geos/geom/CoordinateSequence.h>
#include <geos/geom/Envelope.h>
#include <geos/noding/Noder.h>
#include <geos/noding/SegmentString.h>
#include <geos/noding/snap/SnappingPointIndex.h>
 
 
// Forward declarations
namespace geos {
namespace geom {
class Envelope;
class PrecisionModel;
}
namespace noding {
class NodedSegmentString;
}
}
 
namespace geos {
namespace noding { // geos::noding
namespace snap {   // geos::noding::snap

class GEOS_DLL SnappingNoder : public Noder {
 
private:
 
    // Members
    double snapTolerance;
    SnappingPointIndex snapIndex;
    std::vector<std::unique_ptr<SegmentString>> nodedResult;
 
    // Methods
 
    void seedSnapIndex(const std::vector<SegmentString*>& segStrings);
 
    void snapVertices(const std::vector<SegmentString*>& segStrings, std::vector<SegmentString*>& nodedStrings);
 
    std::unique_ptr<SegmentString> snapVertices(const SegmentString* ss);
 
    std::shared_ptr<geom::CoordinateSequence> snap(const geom::CoordinateSequence *cs);

    std::vector<std::unique_ptr<SegmentString>> snapIntersections(std::vector<SegmentString*>& inputSS);
 
 
public:

    SnappingNoder(double p_snapTolerance)
        : snapTolerance(p_snapTolerance)
        , snapIndex(p_snapTolerance)
        {}

    std::vector<std::unique_ptr<SegmentString>> getNodedSubstrings() override;
 
    void computeNodes(const std::vector<SegmentString*>& inputSegStrings) override;
 
 
};
 
 
} // namespace geos::noding::snap
} // namespace geos::noding
} // namespace geos