00001 /* 00002 libwftk - Worldforge Toolkit - a widget library 00003 Copyright (C) 2002 Malcolm Walker <malcolm@worldforge.org> 00004 Based on code copyright (C) 1999-2002 Karsten Laux 00005 00006 This library is free software; you can redistribute it and/or 00007 modify it under the terms of the GNU Lesser General Public 00008 License as published by the Free Software Foundation; either 00009 version 2.1 of the License, or (at your option) any later version. 00010 00011 This library is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 Lesser General Public License for more details. 00015 00016 You should have received a copy of the GNU Lesser General Public 00017 License along with this library; if not, write to the 00018 Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00019 Boston, MA 02111-1307, SA. 00020 */ 00021 00022 #ifndef _POINT_H 00023 #define _POINT_H 00024 00025 #include <iosfwd> 00026 00027 namespace wftk { 00028 00030 class Point 00031 { 00032 public: 00034 Point() : x(0), y(0) {} 00036 Point(int x_, int y_) : x(x_), y(y_) {} 00038 Point& operator+=(const Point& p) 00039 { x += p.x; y += p.y; return *this; } 00041 Point& operator-=(const Point& p) 00042 { x -= p.x; y -= p.y; return *this; } 00044 ~Point() {}; 00046 friend Point operator+(const Point& p, const Point& q) 00047 { return Point(p) += q; } 00049 friend Point operator-(const Point& p, const Point& q) 00050 { return Point(p) -= q; } 00052 Point operator-() const {return Point(-x, -y);} 00054 friend bool operator==(const Point &p, const Point &q) 00055 { return (p.x == q.x) && (p.y == q.y); } 00057 friend bool operator!=(const Point &p, const Point &q) 00058 { return (p.x != q.x) || (p.y != q.y); } 00060 friend bool operator<(const Point &p, const Point &q) 00061 { return p.x < q.x || (p.x == q.x && p.y < q.y); } 00063 friend std::ostream& operator<<(std::ostream& s, const Point& p); 00065 int x; 00067 int y; 00068 00069 }; 00070 00071 } // namespace wftk 00072 00073 #endif // _POINT_H
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