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author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/epix/interval.h |
Initial commit
Diffstat (limited to 'graphics/epix/interval.h')
-rw-r--r-- | graphics/epix/interval.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/graphics/epix/interval.h b/graphics/epix/interval.h new file mode 100644 index 0000000000..465262c4da --- /dev/null +++ b/graphics/epix/interval.h @@ -0,0 +1,81 @@ +/* + * interval.h -- ePiX::interval class and operations + * + * This file is part of ePiX, a C++ library for creating high-quality + * figures in LaTeX + * + * Version 1.0.25 + * Last Change: May 20, 2007 + * + * + * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 + * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh> + * Department of Mathematics and Computer Science + * College of the Holy Cross + * Worcester, MA, 01610-2395, USA + * + * + * ePiX is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * ePiX is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + * License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ePiX; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * + * This file provides the interval class: + * + * - Minkowski sum, intersection + */ + +#ifndef EPIX_INTERVAL +#define EPIX_INTERVAL + +#include <string> + +namespace ePiX { + + class interval { + public: + interval(std::string); // allow implicit conversion, must mangle argument + interval(double, double); // closed interval + + static interval emptyset; + + double min() const; + double max() const; + double avg() const; + + bool contains(double) const; + + // Minkowski sum + interval& operator +=(const interval&); + + // intersection + interval& operator *=(const interval&); + + bool operator== (const interval&) const; + bool operator!= (const interval&) const; + bool is_empty() const; + + private: + double m_rmin, m_rmax; + + bool m_closed_l, m_closed_r; + + static interval literal(double a, double b); // can force b<a + }; // end of interval class + + interval operator+ (interval I1, const interval& I2); + interval operator* (interval I1, const interval& I2); + +} // end of namespace + +#endif /* EPIX_INTERVAL */ |