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Coordinate.h

00001 /**********************************************************************
00002  * $Id: Coordinate.h 2556 2009-06-06 22:22:28Z strk $
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_COORDINATE_H
00017 #define GEOS_GEOM_COORDINATE_H
00018 
00019 #include <geos/export.h>
00020 #include <geos/platform.h> // for DoubleNotANumber
00021 #include <geos/inline.h>
00022 #include <set>
00023 #include <stack>
00024 #include <vector> // for typedefs
00025 #include <string>
00026 #include <limits>
00027 
00028 namespace geos {
00029 namespace geom { // geos.geom
00030 
00031 struct CoordinateLessThen;
00032 
00053 // Define the following to make assignments and copy constructions 
00054 // NON-inline (will let profilers report usages)
00055 //#define PROFILE_COORDINATE_COPIES 1
00056 class GEOS_DLL Coordinate {
00057 
00058 private:
00059 
00060         static Coordinate nullCoord;
00061 
00062 public:
00064         typedef std::set<const Coordinate *, CoordinateLessThen> ConstSet;
00065 
00067         typedef std::vector<const Coordinate *> ConstVect;
00068 
00070         typedef std::stack<const Coordinate *> ConstStack;
00071 
00073         typedef std::vector<Coordinate> Vect;
00074 
00076         double x;
00077 
00079         double y;
00080 
00082         double z;
00083 
00084         void setNull();
00085 
00086         static Coordinate& getNull();
00087 
00088         bool isNull() const;
00089 
00090         ~Coordinate();
00091 
00092         Coordinate(double xNew=0.0, double yNew=0.0, double zNew=DoubleNotANumber);
00093 
00094 // Letting the compiler synthetize these gives us more numerical stability
00095 #if 0
00096         Coordinate(const Coordinate& c);
00097 
00098         Coordinate &operator=(const Coordinate &c);
00099 #endif
00100 
00101         bool equals2D(const Coordinate& other) const;
00102 
00104         bool equals(const Coordinate& other) const;
00105 
00107         int compareTo(const Coordinate& other) const;
00108 
00110         bool equals3D(const Coordinate& other) const;
00111 
00113         std::string toString() const;
00114 
00117         //void makePrecise(const PrecisionModel *pm);
00118 
00119         double distance(const Coordinate& p) const;
00120 
00121         int hashCode() const;
00122 
00127         static int hashCode(double d);
00128 
00129 };
00130 
00132 struct GEOS_DLL CoordinateLessThen {
00133 
00134         bool operator()(const Coordinate* a, const Coordinate* b) const;
00135         bool operator()(const Coordinate& a, const Coordinate& b) const;
00136 
00137 };
00138 
00140 GEOS_DLL std::ostream& operator<< (std::ostream& os, const Coordinate& c);
00141 
00143 GEOS_DLL bool operator==(const Coordinate& a, const Coordinate& b);
00144 
00146 GEOS_DLL bool operator!=(const Coordinate& a, const Coordinate& b);
00147 
00148 
00149 
00150 } // namespace geos.geom
00151 } // namespace geos
00152 
00153 #ifdef GEOS_INLINE
00154 # include "geos/geom/Coordinate.inl"
00155 #endif
00156 
00157 #endif // ndef GEOS_GEOM_COORDINATE_H
00158 
00159 /**********************************************************************
00160  * $Log$
00161  * Revision 1.6  2006/06/14 19:27:02  strk
00162  * Let the compiler synthetize copy ctor and assignment op for Coordinate class to obtain better numerical stability.
00163  *
00164  * Revision 1.5  2006/05/23 15:06:07  strk
00165  * * source/headers/geos/geom/Coordinate.h: added missing <string> include.
00166  *
00167  * Revision 1.4  2006/03/27 15:57:39  strk
00168  * Commented need for platform.h include
00169  *
00170  * Revision 1.3  2006/03/24 09:52:41  strk
00171  * USE_INLINE => GEOS_INLINE
00172  *
00173  * Revision 1.2  2006/03/20 10:12:45  strk
00174  * Bug #70 - Small fix in fwd decl. of CoordinateLessThen
00175  *
00176  * Revision 1.1  2006/03/09 16:46:49  strk
00177  * geos::geom namespace definition, first pass at headers split
00178  *
00179  **********************************************************************/

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