src/pre-pic/position.h

   1 /*@
   2  * Copyright (c) 2014 - 2017 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
   3  *
   4  * Copyright (C) 1989 - 1992 Free Software Foundation, Inc.
   5  *      Written by James Clark (jjc@jclark.com)
   6  *
   7  * This is free software; you can redistribute it and/or modify it under
   8  * the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2, or (at your option) any later
  10  * version.
  11  *
  12  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  13  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with groff; see the file COPYING.  If not, write to the Free Software
  19  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include "config.h"
  23 #include "pic-config.h"
  24
  25 struct place;
  26
  27 class position
  28 {
  29 public:
  30   double x;
  31   double y;
  32   position(double, double );
  33   position();
  34   position(const place &);
  35   position &operator+=(const position &);
  36   position &operator-=(const position &);
  37   position &operator*=(double);
  38   position &operator/=(double);
  39 };
  40
  41 position operator-(const position &);
  42 position operator+(const position &, const position &);
  43 position operator-(const position &, const position &);
  44 position operator/(const position &, double);
  45 position operator*(const position &, double);
  46 // dot product
  47 double operator*(const position &, const position &);
  48 int operator==(const position &, const position &);
  49 int operator!=(const position &, const position &);
  50
  51 double hypot(const position &a);
  52
  53 typedef position distance;
  54
  55 // s-it2-mode