IndexedNestedRingTester.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2009 Sandro Santilli <strk@kbt.io>
 *
 * 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/valid/IndexedNestedRingTester.java r399 (JTS-1.12)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_VALID_OFFSETCURVEVERTEXLIST_H
#define GEOS_OP_VALID_OFFSETCURVEVERTEXLIST_H
 
#include <vector> // for composition
 
// Forward declarations
namespace geos {
namespace geom {
//class Envelope;
class Coordinate;
class LinearRing;
}
namespace index {
class SpatialIndex;
}
namespace geomgraph {
class GeometryGraph;
}
}
 
namespace geos {
namespace operation { // geos.operation
namespace valid { // geos.operation.valid
 
class IndexedNestedRingTester {
public:
    // @param newGraph : ownership retained by caller
    IndexedNestedRingTester(geomgraph::GeometryGraph* newGraph)
        :
        graph(newGraph),
        //totalEnv(0),
        index(nullptr),
        nestedPt(nullptr)
    {
    }
 
    ~IndexedNestedRingTester();
 
    /*
     * Be aware that the returned Coordinate (if != NULL)
     * will point to storage owned by one of the LinearRing
     * previously added. If you destroy them, this
     * will point to an invalid memory address.
     */
    const geom::Coordinate*
    getNestedPoint() const
    {
        return nestedPt;
    }
 
    void
    add(const geom::LinearRing* ring)
    {
        rings.push_back(ring);
    }
 
    bool isNonNested();
 
private:
 
    geomgraph::GeometryGraph* graph;
 
    std::vector<const geom::LinearRing*> rings;
 
    // CHECK: Owned by (seems unused)?
    //geom::Envelope* totalEnv;
 
    // Owned by us (use unique_ptr ?)
    geos::index::SpatialIndex* index; // 'index' in JTS
 
    // Externally owned, if not null
    const geom::Coordinate* nestedPt;
 
    void buildIndex();
};
 
} // namespace geos.operation.valid
} // namespace geos.operation
} // namespace geos
 
#endif // GEOS_OP_VALID_OFFSETCURVEVERTEXLIST_H