MCPointInRing.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.
 *
 **********************************************************************/
 
#ifndef GEOS_ALGORITHM_MCPOINTINRING_H
#define GEOS_ALGORITHM_MCPOINTINRING_H
 
#include <geos/export.h>
#include <geos/index/chain/MonotoneChainSelectAction.h> // for inheritance
#include <geos/algorithm/PointInRing.h> // for inheritance
#include <geos/geom/Coordinate.h> // for composition
#include <geos/index/bintree/Interval.h> // for composition
 
#include <vector>
 
// Forward declarations
namespace geos {
        namespace geom {
                class Coordinate;
                class LineSegment;
                class LinearRing;
                class CoordinateSequence;
                class CoordinateSequence;
        }
        namespace index {
                namespace bintree {
                        class Bintree;
                        class Interval;
                }
                namespace chain {
                        class MonotoneChain;
                }
        }
}
 
namespace geos {
namespace algorithm { // geos::algorithm
 
class GEOS_DLL MCPointInRing: public PointInRing {
public:
        MCPointInRing(const geom::LinearRing *newRing);
        ~MCPointInRing();
        bool isInside(const geom::Coordinate& pt);
 
        void testLineSegment(const geom::Coordinate& p,
                                const geom::LineSegment& seg);
 
        class MCSelecter: public index::chain::MonotoneChainSelectAction {
        using MonotoneChainSelectAction::select;
        private:
                geom::Coordinate p;
                MCPointInRing *parent;
        public:
                MCSelecter(const geom::Coordinate& newP, MCPointInRing *prt);
                void select(const geom::LineSegment& ls);
        };
 
private:
        const geom::LinearRing *ring;
        index::bintree::Interval interval;
        geom::CoordinateSequence *pts;
        index::bintree::Bintree *tree;
        int crossings;  // number of segment/ray crossings
        void buildIndex();
        void testMonotoneChain(geom::Envelope *rayEnv,
                        MCSelecter *mcSelecter,
                        index::chain::MonotoneChain *mc);
};
 
} // namespace geos::algorithm
} // namespace geos
 
#endif // GEOS_ALGORITHM_MCPOINTINRING_H