SweeplineNestedRingTester.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/SweeplineNestedRingTester.java rev. 1.12 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_SWEEPLINENESTEDRINGTESTER_H
#define GEOS_OP_SWEEPLINENESTEDRINGTESTER_H
 
#include <geos/export.h>
#include <geos/geom/Envelope.h> // for inline
//#include <geos/indexSweepline.h> // for inline and inheritance 
#include <geos/index/sweepline/SweepLineOverlapAction.h> // for inheritance
#include <geos/index/sweepline/SweepLineIndex.h> // for inlines
 
#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 Envelope;
                class Coordinate;
        }
        namespace index {
                namespace sweepline {
                        class SweepLineIndex;
                }
        }
        namespace geomgraph {
                class GeometryGraph;
        }
}
 
namespace geos {
namespace operation { // geos::operation
namespace valid { // geos::operation::valid

class GEOS_DLL SweeplineNestedRingTester {
 
private:
        geomgraph::GeometryGraph *graph;  // used to find non-node vertices
        std::vector<geom::LinearRing*> rings;
        index::sweepline::SweepLineIndex *sweepLine;
        geom::Coordinate *nestedPt;
        void buildIndex();
 
public:
 
        SweeplineNestedRingTester(geomgraph::GeometryGraph *newGraph)
                :
                graph(newGraph),
                rings(),
                sweepLine(new index::sweepline::SweepLineIndex()),
                nestedPt(NULL)
        {}
 
        ~SweeplineNestedRingTester()
        {
                delete sweepLine;
        }
 
        /*
         * 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() { return nestedPt; }
 
        void add(geom::LinearRing* ring) {
                rings.push_back(ring);
        }
 
        bool isNonNested();
        bool isInside(geom::LinearRing *innerRing, geom::LinearRing *searchRing);
        class OverlapAction: public index::sweepline::SweepLineOverlapAction {
        public:
                bool isNonNested;
                OverlapAction(SweeplineNestedRingTester *p);
                void overlap(index::sweepline::SweepLineInterval *s0,
                                index::sweepline::SweepLineInterval *s1);
        private:
                SweeplineNestedRingTester *parent;
        };
};
 
} // namespace geos::operation::valid
} // namespace geos::operation
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_OP_SWEEPLINENESTEDRINGTESTER_H