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63 lines
2.6 KiB
63 lines
2.6 KiB
/***************************************************************************
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kstars.h - Trinity Desktop Planetarium
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-------------------
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begin : Mon Jan 7 2002
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copyright : (C) 2002 by Mark Hollomon
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email : mhh@mindspring.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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/**@class KSUtils
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*@short KStars utility functions
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*@author Mark Hollomon
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*@version 1.0
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*Static functions for various purposes.
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*The openDataFile() function searches the standard KDE directories
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*for the data filename given as an argument.
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*(it is impossible to instantiate a KSUtils object; just use the static functions).
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*/
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#ifndef KSTARS_KSUTILS_H_
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#define KSTARS_KSUTILS_H_
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class TQFile;
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class KSUtils {
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public:
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/**Attempt to open the data file named filename, using the TQFile object "file".
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*First look in the standard KDE directories, then look in a local "data"
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*subdirectory. If the data file cannot be found or opened, display a warning
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*messagebox.
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*@short Open a data file.
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*@param &file The TQFile object to be opened
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*@param filename The name of the data file.
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*@returns bool Returns true if data file was opened successfully.
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*@returns a reference to the opened file.
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*/
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static bool openDataFile( TQFile &file, const TQString &filename );
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/** Lagrange interpolation using a maximum number of 10 points.
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*@param x[] double array with x values
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*@param v[] double array with y values
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*@param n number of points to use for interpolation
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*@param xval value for which we are looking for the y value.
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*/
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static long double lagrangeInterpolation(const long double x[], const long double v[], int n, long double xval);
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private:
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/**Constructor. This class is just a collection of static functions, so
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*we have made the constructor private (so it is not possible to
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*instantiate a KSUtils object).
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*/
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KSUtils();
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};
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#endif
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