1 /* $NetBSD: position.h,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $ */ 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 50