HoleAssigner.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2019 Daniel Baston <dbaston@gmail.com>
 *
 * 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: operation/polygonize/HoleAssigner.java 0b3c7e3eb0d3e
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/operation/polygonize/EdgeRing.h>
#include <geos/index/strtree/TemplateSTRtree.h>
 
#include <vector>
 
namespace geos {
namespace operation {
namespace polygonize {
 
class GEOS_DLL HoleAssigner {
public:
    static void assignHolesToShells(std::vector<EdgeRing*> & holes, std::vector<EdgeRing*> & shells);
 
private:
    explicit HoleAssigner(std::vector<EdgeRing*> & shells) : m_shells(shells) {
        buildIndex();
    }
 
    void assignHolesToShells(std::vector<EdgeRing*> & holes);
    void assignHoleToShell(EdgeRing* holeER);
    std::vector<EdgeRing*> findShells(const geom::Envelope & ringEnv);
 
    EdgeRing* findEdgeRingContaining(EdgeRing* testER);
 
    void buildIndex();
 
    std::vector<EdgeRing*>& m_shells;
    geos::index::strtree::TemplateSTRtree<EdgeRing*> m_shellIndex;
};
}
}
}