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