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# CoordinateSequence.h

    00001 /**********************************************************************
    00002  * $Id: CoordinateSequence.h 3255 2011-03-01 17:56:10Z mloskot $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2006 Refractions Research Inc.
    00008  *
    00009  * This is free software; you can redistribute and/or modify it under
    00010  * the terms of the GNU Lesser General Public Licence as published
    00011  * by the Free Software Foundation.
    00012  * See the COPYING file for more information.
    00013  *
    00014  **********************************************************************/
    00015
    00016 #ifndef GEOS_GEOM_COORDINATESEQUENCE_H
    00017 #define GEOS_GEOM_COORDINATESEQUENCE_H
    00018
    00019 #include <geos/export.h>
    00020 #include <geos/platform.h>
    00021 #include <geos/inline.h>
    00022
    00023 #include <geos/geom/Coordinate.h> // for applyCoordinateFilter
    00024
    00025 #include <vector>
    00026 #include <iosfwd> // ostream
    00027 #include <memory> // for auto_ptr typedef
    00028
    00029 // Forward declarations
    00030 namespace geos {
    00031         namespace geom {
    00032                 class Envelope;
    00033                 class CoordinateFilter;
    00034                 class Coordinate;
    00035         }
    00036 }
    00037
    00038 namespace geos {
    00039 namespace geom { // geos::geom
    00040
    00060 class GEOS_DLL CoordinateSequence {
    00061
    00062 protected:
    00063
    00064         CoordinateSequence() {}
    00065
    00066         CoordinateSequence(const CoordinateSequence&) {}
    00067
    00068 public:
    00069
    00070         typedef std::auto_ptr<CoordinateSequence> AutoPtr;
    00071
    00072         virtual ~CoordinateSequence() {}
    00073
    00077         virtual CoordinateSequence *clone() const=0;
    00078
    00085         //virtual const Coordinate& getCoordinate(int i) const=0;
    00086         virtual const Coordinate& getAt(std::size_t i) const=0;
    00087
    00089         const Coordinate& back() const {
    00090                 return getAt(size()-1);
    00091         }
    00092
    00094         const Coordinate& front() const {
    00095                 return getAt(0);
    00096         }
    00097
    00098         const Coordinate& operator[] (std::size_t i) const {
    00099                 return getAt(i);
    00100         }
    00101
    00105         virtual void getAt(std::size_t i, Coordinate& c) const=0;
    00106
    00111         //virtual int size() const=0;
    00112         virtual std::size_t getSize() const=0;
    00113
    00114         size_t size() const { return getSize(); }
    00115
    00136         virtual const std::vector<Coordinate>* toVector() const=0;
    00137
    00139         //
    00142         virtual void toVector(std::vector<Coordinate>& coords) const=0;
    00143
    00151         void add(const std::vector<Coordinate>* vc, bool allowRepeated);
    00152
    00153         /* This is here for backward compatibility.. */
    00154         //void add(CoordinateSequence *cl,bool allowRepeated,bool direction);
    00155
    00168         void add(const CoordinateSequence *cl, bool allowRepeated,
    00169                         bool direction);
    00170
    00178         virtual void add(const Coordinate& c, bool allowRepeated);
    00179
    00191         virtual void add(std::size_t i, const Coordinate& coord, bool allowRepeated)=0;
    00192
    00194         virtual bool isEmpty() const=0;
    00195
    00197         virtual void add(const Coordinate& c)=0;
    00198
    00199         // Get number of coordinates
    00200         //virtual int getSize() const=0;
    00201
    00203         //virtual       const Coordinate& getAt(std::size_t pos) const=0;
    00204
    00206         virtual void setAt(const Coordinate& c, std::size_t pos)=0;
    00207
    00209         virtual void deleteAt(std::size_t pos)=0;
    00210
    00212         virtual std::string toString() const=0;
    00213
    00215         virtual void setPoints(const std::vector<Coordinate> &v)=0;
    00216
    00218         bool hasRepeatedPoints() const;
    00219
    00221         const Coordinate* minCoordinate() const;
    00222
    00223
    00232         static CoordinateSequence* removeRepeatedPoints(
    00233                         const CoordinateSequence *cl);
    00234
    00236         //
    00239         virtual CoordinateSequence& removeRepeatedPoints()=0;
    00240
    00245         static bool hasRepeatedPoints(const CoordinateSequence *cl);
    00246
    00251         static CoordinateSequence* atLeastNCoordinatesOrNothing(std::size_t n,
    00252                         CoordinateSequence *c);
    00253
    00259         static const Coordinate* minCoordinate(CoordinateSequence *cl);
    00260
    00262         //
    00266         static int indexOf(const Coordinate *coordinate,
    00267                         const CoordinateSequence *cl);
    00268
    00274         static bool equals(const CoordinateSequence *cl1,
    00275                         const CoordinateSequence *cl2);
    00276
    00278         static void scroll(CoordinateSequence *cl, const Coordinate *firstCoordinate);
    00279
    00297         static int increasingDirection(const CoordinateSequence& pts);
    00298
    00300         static void reverse(CoordinateSequence *cl);
    00301
    00303         enum { X,Y,Z,M };
    00304
    00311         virtual std::size_t getDimension() const=0;
    00312
    00323         virtual double getOrdinate(std::size_t index, std::size_t ordinateIndex) const=0;
    00324
    00331         virtual double getX(std::size_t index) const { return getOrdinate(index, X); }
    00332
    00339         virtual double getY(std::size_t index) const { return getOrdinate(index, Y); }
    00340
    00341
    00350         virtual void setOrdinate(std::size_t index, std::size_t ordinateIndex, double value)=0;
    00351
    00359         virtual void expandEnvelope(Envelope &env) const;
    00360
    00361         virtual void apply_rw(const CoordinateFilter *filter)=0; //Abstract
    00362         virtual void apply_ro(CoordinateFilter *filter) const=0; //Abstract
    00363
    00372         template <class T>
    00373         void applyCoordinateFilter(T& f)
    00374         {
    00375                 Coordinate c;
    00376                 for(std::size_t i=0, n=size(); i<n; ++i)
    00377                 {
    00378                         getAt(i, c);
    00379                         f.filter(c);
    00380                         setAt(c, i);
    00381                 }
    00382         }
    00383
    00384 };
    00385
    00386 GEOS_DLL std::ostream& operator<< (std::ostream& os, const CoordinateSequence& cs);
    00387
    00388 GEOS_DLL bool operator== (const CoordinateSequence& s1, const CoordinateSequence& s2);
    00389
    00390 GEOS_DLL bool operator!= (const CoordinateSequence& s1, const CoordinateSequence& s2);
    00391
    00392 } // namespace geos::geom
    00393 } // namespace geos
    00394
    00395 //#ifdef GEOS_INLINE
    00396 //# include "geos/geom/CoordinateSequence.inl"
    00397 //#endif
    00398
    00399 #endif // ndef GEOS_GEOM_COORDINATESEQUENCE_H
    00400
    00401 /**********************************************************************
    00402  * $Log$
    00403  * Revision 1.12  2006/06/12 16:51:23  strk
    00404  * Added equality and inequality operators and tests
    00405  *
    00406  * Revision 1.11  2006/06/12 16:36:22  strk
    00407  * indentation, notes about things to be fixed.
    00408  *
    00409  * Revision 1.10  2006/06/12 15:06:30  strk
    00410  * Added default ctor and copy ctor (protected)
    00411  *
    00412  * Revision 1.9  2006/06/12 10:10:39  strk
    00413  * Fixed getGeometryN() to take size_t rather then int, changed unsigned int parameters to size_t.
    00414  *
    00415  * Revision 1.8  2006/05/04 08:42:12  strk
    00416  * Added note about the CoordinateSequence::toVector() method.
    00417  *
    00418  * Revision 1.7  2006/05/03 19:47:27  strk
    00419  * added operator<< for CoordinateSequence
    00420  *
    00421  * Revision 1.6  2006/05/03 08:58:34  strk
    00422  * added new non-static CoordinateSequence::removeRepeatedPoints() mutator.
    00423  *
    00424  * Revision 1.5  2006/04/11 11:55:22  strk
    00425  * Added CoordinateSequence::AutoPtr typedef
    00426  *
    00427  * Revision 1.4  2006/04/04 09:53:45  strk
    00428  * Fixed applyCoordinateFilter() templated function body
    00429  *
    00430  * Revision 1.3  2006/03/24 09:52:41  strk
    00431  * USE_INLINE => GEOS_INLINE
    00432  *
    00433  * Revision 1.2  2006/03/20 17:27:03  strk
    00434  * Bug #72 - Missing <vector> header
    00435  *
    00436  * Revision 1.1  2006/03/09 16:46:49  strk
    00437  * geos::geom namespace definition, first pass at headers split
    00438  *
    00439  **********************************************************************/