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# AbstractPreparedPolygonContains.h

    00001 /**********************************************************************
    00002  *
    00003  * GEOS - Geometry Engine Open Source
    00004  * http://geos.refractions.net
    00005  *
    00006  * Copyright (C) 2006 Refractions Research Inc.
    00007  *
    00008  * This is free software; you can redistribute and/or modify it under
    00009  * the terms of the GNU Lesser General Public Licence as published
    00010  * by the Free Software Foundation.
    00011  * See the COPYING file for more information.
    00012  *
    00013  *
    00014  **********************************************************************
    00015  *
    00016  * Last port: geom/prep/AbstractPreparedPolygonContains.java r388 (JTS-1.12)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H
    00021 #define GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H
    00022
    00023 #include <geos/geom/prep/PreparedPolygonPredicate.h> // inherited
    00024
    00025
    00026 // forward declarations
    00027 namespace geos {
    00028         namespace geom {
    00029                 class Geometry;
    00030
    00031                 namespace prep {
    00032                         class PreparedPolygon;
    00033                 }
    00034         }
    00035 }
    00036
    00037
    00038 namespace geos {
    00039 namespace geom { // geos::geom
    00040 namespace prep { // geos::geom::prep
    00041
    00065 class AbstractPreparedPolygonContains : public PreparedPolygonPredicate
    00066 {
    00067 private:
    00068         // information about geometric situation
    00069         bool hasSegmentIntersection;
    00070         bool hasProperIntersection;
    00071         bool hasNonProperIntersection;
    00072
    00073         bool isProperIntersectionImpliesNotContainedSituation( const geom::Geometry * testGeom);
    00074
    00080         bool isSingleShell( const geom::Geometry & geom);
    00081
    00082         void findAndClassifyIntersections( const geom::Geometry * geom);
    00083
    00084 protected:
    00091         bool requireSomePointInInterior;
    00092
    00100         bool eval( const geom::Geometry * geom);
    00101
    00109         virtual bool fullTopologicalPredicate( const geom::Geometry * geom) =0;
    00110
    00111 public:
    00112         AbstractPreparedPolygonContains( const PreparedPolygon * const prepPoly)
    00113         :       PreparedPolygonPredicate( prepPoly),
    00114                 hasSegmentIntersection( false),
    00115                 hasProperIntersection( false),
    00116                 hasNonProperIntersection( false),
    00117                 requireSomePointInInterior(true)
    00118         { }
    00119
    00120         AbstractPreparedPolygonContains( const PreparedPolygon * const prepPoly, bool requireSomePointInInterior)
    00121         :       PreparedPolygonPredicate( prepPoly),
    00122                 hasSegmentIntersection( false),
    00123                 hasProperIntersection( false),
    00124                 hasNonProperIntersection( false),
    00125                 requireSomePointInInterior(requireSomePointInInterior)
    00126         { }
    00127
    00128         virtual ~AbstractPreparedPolygonContains()
    00129         { }
    00130
    00131 };
    00132
    00133 } // geos::geom::prep
    00134 } // geos::geom
    00135 } // geos
    00136
    00137 #endif // GEOS_GEOM_PREP_ABSTRACTPREPAREDPOLYGONCONTAINS_H
    00138 /**********************************************************************
    00139  * $Log$
    00140  **********************************************************************/
    00141