src/point.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #ifndef POINT_H
  12 #define POINT_H
  13
  14 #include <QPoint>
  15 #include <iostream>
  16
  17 struct Point {
  18   static Point invalid() { return Point(-1, -1); }
  19   bool valid() const { return x != -1 && y != -1; }
  20
  21   int x, y;
  22   Point(int x, int y);
  23   Point();
  24
  25   QString row(int ysize) const;
  26   QString col() const;
  27
  28   explicit Point(const QString& str, int ysize);
  29   explicit Point(const QPoint&);
  30
  31   QString toString(int ysize) const;
  32
  33   Point operator+(const Point& other) const;
  34   Point operator+=(const Point& other);
  35   Point operator-() const;
  36   Point operator-(const Point& other) const;
  37   Point operator*(int n) const;
  38   Point operator/(int n) const;
  39   Point div(int n) const;
  40   bool operator==(const Point& other) const;
  41   bool operator!=(const Point& other) const;
  42   bool operator<(const Point& other) const;
  43   bool operator<=(const Point& other) const;
  44
  45   // true if for each coordinate of other, either it
  46   // is -1, or it is equal to the corresponding
  47   // coordinate of this
  48   bool resembles(const Point& other) const;
  49
  50   operator QPoint() const;
  51
  52   Point normalizeInfinity() const;
  53   double norm() const;
  54
  55 private:
  56   int normalizeInfinityHelper(int n) const;
  57 };
  58
  59 std::ostream& operator<<(std::ostream&, const Point&);
  60
  61 #endif // POINT_H