IndexedNestedRingTester.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2009 Sandro Santilli <strk@keybit.net>
 *
 * 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(0),
                nestedPt(0)
        {
        }
 
        ~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 auto_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