FastNodingValidator.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.
 *
 **********************************************************************
 *
 * Last port: noding/FastNodingValidator.java rev. ??? (JTS-1.8)
 *
 **********************************************************************/
 
#ifndef GEOS_NODING_FASTNODINGVALIDATOR_H
#define GEOS_NODING_FASTNODINGVALIDATOR_H
 
#include <geos/noding/SingleInteriorIntersectionFinder.h> // for composition
#include <geos/algorithm/LineIntersector.h> // for composition
 
#include <memory>
#include <string>
#include <cassert>
 
// Forward declarations
namespace geos {
        namespace noding {
                class SegmentString;
        }
}
 
namespace geos {
namespace noding { // geos.noding

class FastNodingValidator 
{
 
public:
 
        FastNodingValidator(std::vector<noding::SegmentString*>& newSegStrings)
                :
                li(), // robust...
                segStrings(newSegStrings),
                segInt(),
                isValidVar(true)
        {
        }

        bool isValid()
        {
                execute();
                return isValidVar;
        }
  
        std::string getErrorMessage() const;
  
        void checkValid();
 
private:
 
        geos::algorithm::LineIntersector li;
 
        std::vector<noding::SegmentString*>& segStrings;
 
        std::auto_ptr<SingleInteriorIntersectionFinder> segInt;
 
        bool isValidVar;
        
        void execute()
        {
                if (segInt.get() != NULL) return;
                checkInteriorIntersections();
        }
 
        void checkInteriorIntersections();
  
    // Declare type as noncopyable
    FastNodingValidator(const FastNodingValidator& other);
    FastNodingValidator& operator=(const FastNodingValidator& rhs);
};
 
} // namespace geos.noding
} // namespace geos
 
#endif // GEOS_NODING_FASTNODINGVALIDATOR_H