51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: position.h,v 1.3 1993/08/02 17:44:49 mycroft Exp $
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*/
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struct place;
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struct position {
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double x;
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double y;
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position(double, double );
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position();
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position(const place &);
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position &operator+=(const position &);
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position &operator-=(const position &);
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position &operator*=(double);
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position &operator/=(double);
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};
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position operator-(const position &);
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position operator+(const position &, const position &);
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position operator-(const position &, const position &);
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position operator/(const position &, double);
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position operator*(const position &, double);
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// dot product
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double operator*(const position &, const position &);
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int operator==(const position &, const position &);
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int operator!=(const position &, const position &);
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double hypot(const position &a);
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typedef position distance;
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