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Polygon.h

00001 /**********************************************************************
00002  * $Id: Polygon.h 3185 2011-02-07 15:39:27Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
00008  * Copyright (C) 2005 2006 Refractions Research Inc.
00009  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00010  *
00011  * This is free software; you can redistribute and/or modify it under
00012  * the terms of the GNU Lesser General Public Licence as published
00013  * by the Free Software Foundation. 
00014  * See the COPYING file for more information.
00015  *
00016  **********************************************************************
00017  *
00018  * Last port: geom/Polygon.java r320 (JTS-1.12)
00019  *
00020  **********************************************************************/
00021 
00022 #ifndef GEOS_GEOM_POLYGON_H
00023 #define GEOS_GEOM_POLYGON_H
00024 
00025 #include <geos/export.h>
00026 #include <string>
00027 #include <vector>
00028 #include <geos/platform.h>
00029 #include <geos/geom/Geometry.h> // for inheritance
00030 #include <geos/geom/Polygonal.h> // for inheritance
00031 #include <geos/geom/Envelope.h> // for proper use of auto_ptr<>
00032 #include <geos/geom/Dimension.h> // for Dimension::DimensionType
00033 
00034 #include <geos/inline.h>
00035 
00036 #include <memory> // for auto_ptr
00037 
00038 // Forward declarations
00039 namespace geos {
00040         namespace geom { // geos::geom
00041                 class Coordinate;
00042                 class CoordinateArraySequence;
00043                 class CoordinateSequenceFilter;
00044                 class LinearRing;
00045                 class LineString;
00046         }
00047 }
00048 
00049 namespace geos {
00050 namespace geom { // geos::geom
00051 
00067 class GEOS_DLL Polygon: public virtual Geometry, public Polygonal
00068 {
00069 
00070 public:
00071 
00072         friend class GeometryFactory;
00073 
00075         typedef std::vector<const Polygon *> ConstVect;
00076 
00077         virtual ~Polygon();
00078 
00085         virtual Geometry *clone() const { return new Polygon(*this); }
00086 
00087         CoordinateSequence* getCoordinates() const;
00088 
00089         size_t getNumPoints() const;
00090 
00092         Dimension::DimensionType getDimension() const;
00093 
00095         virtual int getCoordinateDimension() const;
00096 
00098         int getBoundaryDimension() const;
00099 
00106         Geometry* getBoundary() const;
00107 
00108         bool isEmpty() const;
00109 
00116         bool isSimple() const;
00117         
00119         const LineString* getExteriorRing() const;
00120 
00122         size_t getNumInteriorRing() const;
00123 
00125         const LineString* getInteriorRingN(std::size_t n) const;
00126 
00127         std::string getGeometryType() const;
00128         virtual GeometryTypeId getGeometryTypeId() const;
00129         bool equalsExact(const Geometry *other, double tolerance=0) const;
00130         void apply_rw(const CoordinateFilter *filter);
00131         void apply_ro(CoordinateFilter *filter) const;
00132         void apply_rw(GeometryFilter *filter);
00133         void apply_ro(GeometryFilter *filter) const;
00134         void apply_rw(CoordinateSequenceFilter& filter);
00135         void apply_ro(CoordinateSequenceFilter& filter) const;
00136 
00137         Geometry* convexHull() const;
00138 
00139         void normalize();
00140 
00141         int compareToSameClass(const Geometry *p) const; //was protected
00142 
00143         const Coordinate* getCoordinate() const;
00144 
00145         double getArea() const;
00146 
00148         double getLength() const;
00149 
00150         void apply_rw(GeometryComponentFilter *filter);
00151 
00152         void apply_ro(GeometryComponentFilter *filter) const;
00153 
00154         bool isRectangle() const;
00155 
00156 protected:
00157 
00158 
00159         Polygon(const Polygon &p);
00160 
00179         Polygon(LinearRing *newShell, std::vector<Geometry *> *newHoles,
00180                 const GeometryFactory *newFactory);
00181 
00182         LinearRing *shell;
00183 
00184         std::vector<Geometry *> *holes; //Actually vector<LinearRing *>
00185 
00186         Envelope::AutoPtr computeEnvelopeInternal() const;
00187 
00188 private:
00189 
00190         void normalize(LinearRing *ring, bool clockwise);
00191 };
00192 
00193 } // namespace geos::geom
00194 } // namespace geos
00195 
00196 #endif // ndef GEOS_GEOM_POLYGON_H
00197 
00198 /**********************************************************************
00199  * $Log$
00200  * Revision 1.7  2006/06/08 17:58:57  strk
00201  * Polygon::getNumInteriorRing() return size_t, Polygon::interiorRingN() takes size_t.
00202  *
00203  * Revision 1.6  2006/05/04 15:49:39  strk
00204  * updated all Geometry::getDimension() methods to return Dimension::DimensionType (closes bug#93)
00205  *
00206  * Revision 1.5  2006/04/28 10:55:39  strk
00207  * Geometry constructors made protected, to ensure all constructions use GeometryFactory,
00208  * which has been made friend of all Geometry derivates. getNumPoints() changed to return
00209  * size_t.
00210  *
00211  * Revision 1.4  2006/04/10 18:15:09  strk
00212  * Changed Geometry::envelope member to be of type auto_ptr<Envelope>.
00213  * Changed computeEnvelopeInternal() signater to return auto_ptr<Envelope>
00214  *
00215  * Revision 1.3  2006/03/24 09:52:41  strk
00216  * USE_INLINE => GEOS_INLINE
00217  *
00218  * Revision 1.2  2006/03/15 09:12:45  strk
00219  * isSimple doc
00220  *
00221  * Revision 1.1  2006/03/09 16:46:49  strk
00222  * geos::geom namespace definition, first pass at headers split
00223  *
00224  **********************************************************************/

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