PolygonNoder.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2023 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.
 *
 **********************************************************************/
 
#pragma once
 
// #include <geos/algorithm/LineIntersector.h>
// #include <geos/geom/Coordinate.h>
//#include <geos/geom/CoordinateSequence.h>
 
#include <geos/export.h>
#include <geos/triangulate/tri/Tri.h>
 
#include <map>
#include <memory>
#include <vector>
 
// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
class CoordinateSequence;
}
namespace noding {
class NodedSegmentString;
}
namespace algorithm {
class LineIntersector;
}
}
 
namespace geos {
namespace triangulate {
namespace polygon {
 
 
class GEOS_DLL PolygonNoder {
    using Coordinate = geos::geom::Coordinate;
    using CoordinateSequence = geos::geom::CoordinateSequence;
    using NodedSegmentString = geos::noding::NodedSegmentString;
    using LineIntersector = geos::algorithm::LineIntersector;
    using Tri = geos::triangulate::tri::Tri;
    template<typename TriType>
    using TriList = geos::triangulate::tri::TriList<TriType>;
 
public:
 
    PolygonNoder(
        const std::shared_ptr<const CoordinateSequence>& shellRing,
        const std::vector<std::shared_ptr<const CoordinateSequence>>& holeRings);
 
    void node();
    bool isShellNoded();
    bool isHoleNoded(std::size_t i);
    std::unique_ptr<CoordinateSequence> getNodedShell();
    std::unique_ptr<CoordinateSequence> getNodedHole(std::size_t i);
    std::vector<bool>& getHolesTouching();
 
 
 
private:
 
    // Members
    std::vector<bool> isHoleTouching;
    std::map<NodedSegmentString*, std::size_t> nodedRingIndexes;
    std::vector<std::unique_ptr<NodedSegmentString>> nodedRings;
 
    // Classes
    class NodeAdder;
    friend class PolygonNoder::NodeAdder;
 
    // Methods
    NodedSegmentString*
        createNodedSegString(const std::shared_ptr<const CoordinateSequence> &ringPts, std::size_t i);
 
    void createNodedSegmentStrings(
        const std::shared_ptr<const CoordinateSequence> &shellRing,
        const std::vector<std::shared_ptr<const CoordinateSequence>> &holeRings);
 
    /* Turn off copy constructors for MSVC */
    PolygonNoder(const PolygonNoder&) = delete;
    PolygonNoder& operator=(const PolygonNoder&) = delete;
 
};
 
 
 
} // namespace geos.triangulate.polygon
} // namespace geos.triangulate
} // namespace geos