AbstractPreparedPolygonContains.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: geom/prep/AbstractPreparedPolygonContains.java r388 (JTS-1.12)
 *
 **********************************************************************/
 
#ifndef GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H
#define GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H
 
#include <geos/geom/prep/PreparedPolygonPredicate.h> // inherited
 
 
// forward declarations
namespace geos {
        namespace geom { 
                class Geometry;
 
                namespace prep { 
                        class PreparedPolygon;
                }
        }
}
 
 
namespace geos {
namespace geom { // geos::geom
namespace prep { // geos::geom::prep

class AbstractPreparedPolygonContains : public PreparedPolygonPredicate 
{
private:
        // information about geometric situation
        bool hasSegmentIntersection;
        bool hasProperIntersection;
        bool hasNonProperIntersection;
 
        bool isProperIntersectionImpliesNotContainedSituation( const geom::Geometry * testGeom);

        bool isSingleShell( const geom::Geometry & geom);
        
        void findAndClassifyIntersections( const geom::Geometry * geom);
 
protected:
        bool requireSomePointInInterior;

        bool eval( const geom::Geometry * geom);

        virtual bool fullTopologicalPredicate( const geom::Geometry * geom) =0;
 
public:
        AbstractPreparedPolygonContains( const PreparedPolygon * const prepPoly) 
        :       PreparedPolygonPredicate( prepPoly),
                hasSegmentIntersection( false),
                hasProperIntersection( false),
                hasNonProperIntersection( false),
                requireSomePointInInterior(true)
        { }
 
        AbstractPreparedPolygonContains( const PreparedPolygon * const prepPoly, bool requireSomePointInInterior) 
        :       PreparedPolygonPredicate( prepPoly),
                hasSegmentIntersection( false),
                hasProperIntersection( false),
                hasNonProperIntersection( false),
                requireSomePointInInterior(requireSomePointInInterior)
        { }
 
        virtual ~AbstractPreparedPolygonContains()
        { }
 
};
 
} // geos::geom::prep
} // geos::geom
} // geos
 
#endif // GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H