SnapRoundingNoder.h

Go to the documentation of this file.

/**********************************************************************
 *
 * 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/SnapRoundingNoder.java r320 (JTS-1.12)
 *
 **********************************************************************/

#pragma once

#include <geos/export.h>

#include <geos/geom/Coordinate.h>
#include <geos/geom/Envelope.h>
#include <geos/noding/snapround/HotPixelIndex.h>
#include <geos/noding/Noder.h>


// Forward declarations
namespace geos {
namespace geom {
class Envelope;
class PrecisionModel;
}
namespace noding {
class NodedSegmentString;
}
}

namespace geos {
namespace noding { // geos::noding
namespace snapround { // geos::noding::snapround

class GEOS_DLL SnapRoundingNoder : public Noder {

private:

    // Members
    const geom::PrecisionModel* pm;
    noding::snapround::HotPixelIndex pixelIndex;
    std::vector<SegmentString*> snappedResult;

    // Methods
    void snapRound(std::vector<SegmentString*>& inputSegStrings, std::vector<SegmentString*>& resultNodedSegments);

    void addVertexPixels(std::vector<SegmentString*>& segStrings);

    void addIntersectionPixels(std::vector<SegmentString*>& segStrings);

    void round(const geom::Coordinate& pt, geom::Coordinate& ptOut);

    std::unique_ptr<std::vector<geom::Coordinate>> round(const std::vector<geom::Coordinate>& pts);

    void computeSnaps(const std::vector<SegmentString*>& segStrings, std::vector<SegmentString*>& snapped);
    NodedSegmentString* computeSegmentSnaps(NodedSegmentString* ss);

    void snapSegment(geom::Coordinate& p0, geom::Coordinate& p1, NodedSegmentString* ss, size_t segIndex);

    void addVertexNodeSnaps(NodedSegmentString* ss);

    void snapVertexNode(const geom::Coordinate& p0, NodedSegmentString* ss, size_t segIndex);

public:

    SnapRoundingNoder(const geom::PrecisionModel* p_pm)
        : pm(p_pm)
        , pixelIndex(p_pm)
        {}

    std::vector<SegmentString*>* getNodedSubstrings() const override;

    void computeNodes(std::vector<SegmentString*>* inputSegStrings) override; //override

};


} // namespace geos::noding::snapround
} // namespace geos::noding
} // namespace geos