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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/epix/interval.h
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+/*
+ * 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 */