gnu/dist/groff/src/preproc/pic/position.h

   1 /*      $NetBSD$        */
   2
   3 // -*- C++ -*-
   4 /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
   5      Written by James Clark (jjc@jclark.com)
   6
   7 This file is part of groff.
   8
   9 groff is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 2, or (at your option) any later
  12 version.
  13
  14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License along
  20 with groff; see the file COPYING.  If not, write to the Free Software
  21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  22
  23 struct place;
  24 struct position {
  25   double x;
  26   double y;
  27   position(double, double );
  28   position();
  29   position(const place &);
  30   position &operator+=(const position &);
  31   position &operator-=(const position &);
  32   position &operator*=(double);
  33   position &operator/=(double);
  34 };
  35
  36 position operator-(const position &);
  37 position operator+(const position &, const position &);
  38 position operator-(const position &, const position &);
  39 position operator/(const position &, double);
  40 position operator*(const position &, double);
  41 // dot product
  42 double operator*(const position &, const position &);
  43 int operator==(const position &, const position &);
  44 int operator!=(const position &, const position &);
  45
  46 double hypot(const position &a);
  47
  48 typedef position distance;
  49