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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /noatun/library/spline.h
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
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Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*
+Copyright (C) 1998 Jürgen Hochwald <juergen.hochwald@privat.kkf.net>
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this library; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+*/
+
+
+
+#ifndef SPLINE_H
+#define SPLINE_H
+
+#include <stdlib.h>
+#include <vector>
+
+class Spline
+{
+ struct Group
+ {
+ double x, y, y2;
+ };
+
+ std::vector<Spline::Group> mPoints;
+ bool mRecalc;
+ double yp1;
+ double ypn;
+
+ // stupid AIX[?] compiler won't let me give it a value here
+ static const bool natural;
+
+public:
+ Spline();
+ Spline(const Spline &copy);
+
+ Spline &operator =(const Spline &copy);
+ ~Spline();
+
+ /**
+ * if the curve had @p count points, return them
+ **/
+ std::vector<double> points(int count) const;
+
+ void add(double x, double y);
+ double spline(double xarg) const;
+ double operator[] (double xarg) const { return spline(xarg); }
+ int numPoints() const { return mPoints.size(); }
+ double x(int num) const;
+ double y(int num) const;
+
+ void clear();
+
+private:
+ void calcSpline() const
+ {
+ const_cast<Spline*>(this)->calcSpline();
+ }
+ void calcSpline();
+
+};
+
+#endif
+