QuadtreeNestedRingTester.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions 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: operation/valid/QuadtreeNestedRingTester.java rev. 1.12 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_QUADTREENESTEDRINGTESTER_H
#define GEOS_OP_QUADTREENESTEDRINGTESTER_H
 
#include <geos/export.h>
 
#include <geos/geom/Envelope.h> // for composition
 
#include <vector>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace geom {
                class LinearRing;
                class Coordinate;
        }
        namespace index {
                namespace quadtree {
                        class Quadtree;
                }
        }
        namespace geomgraph {
                class GeometryGraph;
        }
}
 
namespace geos {
namespace operation { // geos::operation
namespace valid { // geos::operation::valid

class GEOS_DLL QuadtreeNestedRingTester {
public:

        QuadtreeNestedRingTester(geomgraph::GeometryGraph* newGraph);
 
        ~QuadtreeNestedRingTester();
 
        /*
         * 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.
         */
        geom::Coordinate* getNestedPoint();
 
        void add(const geom::LinearRing* ring);
 
        bool isNonNested();
 
private:
 
        geomgraph::GeometryGraph* graph;  // used to find non-node vertices
 
        std::vector<const geom::LinearRing*> rings;
 
        geom::Envelope totalEnv;
 
        index::quadtree::Quadtree* qt;
 
        geom::Coordinate* nestedPt;
 
        void buildQuadtree();
};
 
} // namespace geos::operation::valid
} // namespace geos::operation
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_OP_QUADTREENESTEDRINGTESTER_H