SingleInteriorIntersectionFinder.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006      Refractions Research 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_NODING_SINGLEINTERIORINTERSECTIONFINDER_H
#define GEOS_NODING_SINGLEINTERIORINTERSECTIONFINDER_H
 
#include <geos/noding/SegmentIntersector.h> // for inheritance
#include <geos/geom/Coordinate.h> // for composition
 
#include <vector>
 
// Forward declarations
namespace geos {
        namespace algorithm {
                class LineIntersector;
        }
        namespace noding {
                class SegmentString;
        }
}
 
namespace geos {
namespace noding { // geos.noding

class SingleInteriorIntersectionFinder: public SegmentIntersector
{
 
public:

        SingleInteriorIntersectionFinder(algorithm::LineIntersector& newLi)
                :
                li(newLi),
                interiorIntersection(geom::Coordinate::getNull())
        {
        }

        bool hasIntersection() const
        { 
                return !interiorIntersection.isNull(); 
        }
  
        const geom::Coordinate& getInteriorIntersection() const
        {    
                return interiorIntersection;  
        }

        const std::vector<geom::Coordinate>& getIntersectionSegments() const
        {
                return intSegments;
        }
  
        void processIntersections(
                SegmentString* e0,  int segIndex0,
                SegmentString* e1,  int segIndex1);
  
        bool isDone() const
        { 
                return !interiorIntersection.isNull();
        }
 
private:
        algorithm::LineIntersector& li;
        geom::Coordinate interiorIntersection;
        std::vector<geom::Coordinate> intSegments;
 
    // Declare type as noncopyable
    SingleInteriorIntersectionFinder(const SingleInteriorIntersectionFinder& other);
    SingleInteriorIntersectionFinder& operator=(const SingleInteriorIntersectionFinder& rhs);
};
 
} // namespace geos.noding
} // namespace geos
 
#endif // GEOS_NODING_SINGLEINTERIORINTERSECTIONFINDER_H