Interpolation.h

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00001 /***************************************************************************
00002     File                 : Interpolation.h
00003     Project              : QtiPlot
00004     --------------------------------------------------------------------
00005     Copyright            : (C) 2007 by Ion Vasilief
00006     Email (use @ for *)  : ion_vasilief*yahoo.fr
00007     Description          : Numerical interpolation of data sets
00008 
00009  ***************************************************************************/
00010 
00011 /***************************************************************************
00012  *                                                                         *
00013  *  This program is free software; you can redistribute it and/or modify   *
00014  *  it under the terms of the GNU General Public License as published by   *
00015  *  the Free Software Foundation; either version 2 of the License, or      *
00016  *  (at your option) any later version.                                    *
00017  *                                                                         *
00018  *  This program is distributed in the hope that it will be useful,        *
00019  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
00020  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
00021  *  GNU General Public License for more details.                           *
00022  *                                                                         *
00023  *   You should have received a copy of the GNU General Public License     *
00024  *   along with this program; if not, write to the Free Software           *
00025  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
00026  *   Boston, MA  02110-1301  USA                                           *
00027  *                                                                         *
00028  ***************************************************************************/
00029 #ifndef INTERPOLATION_H
00030 #define INTERPOLATION_H
00031 
00032 #include "Filter.h"
00033 
00034 class QwtPlotCurve;
00035 class Interpolation : public Filter
00036 {
00037 Q_OBJECT
00038 
00039 public:
00040     enum InterpolationMethod{Linear, Cubic, Akima};
00041 
00042     Interpolation(ApplicationWindow *parent, Graph *g, const QString& curveTitle, int m = 0);
00043     Interpolation(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end, int m = 0);
00044 
00045     int method(){return d_method;};
00046     void setMethod(int m);
00047     void setMethod(InterpolationMethod m){setMethod((int)m);};
00048 
00049 private:
00050     void init(int m);
00051     void calculateOutputData(double *x, double *y);
00052     int sortedCurveData(QwtPlotCurve *c, double start, double end, double **x, double **y);
00053 
00055     int d_method;
00056 };
00057 
00058 #endif

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