NodeSections.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (c) 2024 Martin Davis
 * Copyright (C) 2024 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 <vector>
#include <memory>
#include <geos/operation/relateng/NodeSection.h>
#include <geos/export.h>
 
 
// Forward declarations
namespace geos {
namespace operation {
namespace relateng {
class RelateNode;
// class NodeSection;
}
}
namespace geom {
    class CoordinateXY;
    class Geometry;
}
}
 
namespace geos {      // geos.
namespace operation { // geos.operation
namespace relateng { // geos.operation.relateng
 
 
class GEOS_DLL NodeSections {
    using CoordinateXY = geos::geom::CoordinateXY;
    using Geometry = geos::geom::Geometry;
 
private:
 
    // Members
    const CoordinateXY* nodePt;
    std::vector<std::unique_ptr<NodeSection>> sections;
 
    // Methods
 
    void prepareSections();
 
    static bool hasMultiplePolygonSections(
        std::vector<std::unique_ptr<NodeSection>>& sections,
        std::size_t i);
 
    static std::vector<const NodeSection*> collectPolygonSections(
        std::vector<std::unique_ptr<NodeSection>>& sections,
        std::size_t i);
 
 
public:
 
    NodeSections(const CoordinateXY* pt)
        : nodePt(pt)
        {};
 
    const CoordinateXY* getCoordinate() const;
 
    void addNodeSection(NodeSection* e);
 
    bool hasInteractionAB() const;
 
    const Geometry* getPolygonal(bool isA) const;
 
    std::unique_ptr<RelateNode> createNode();
 
    NodeSections(const NodeSections&) = delete;
    NodeSections& operator=(const NodeSections&) = delete;
 
};
 
} // namespace geos.operation.relateng
} // namespace geos.operation
} // namespace geos