BSpline.h

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00001 /*==============================================================================
00002 
00003                                     O  F  E  L  I
00004 
00005                            Object  Finite  Element  Library
00006 
00007   ==============================================================================
00008 
00009    Copyright (C) 1998 - 2008 Rachid Touzani
00010 
00011    This program is free software; you can redistribute it and/or modify it under
00012    the terms of the GNU General Public License as published by the Free
00013    Software Foundation; Version 2 of the License.
00014 
00015    This program is distributed in the hope that it will be useful, but WITHOUT
00016    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00017    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
00018    details.
00019 
00020    You should have received a copy of the GNU General Public License
00021    along with this program; if not, write to the :
00022 
00023    Free Software Foundation
00024    Inc., 59 Temple Place - Suite 330
00025    Boston, MA  02111-1307, USA
00026 
00027   ==============================================================================
00028 
00029                         Definition of function BSpline
00030                    implementing the B-Spline curve algorithm
00031 
00032                Copied and adapted from the program by Keith Vertanen
00033 
00034   ==============================================================================*/
00035 
00036 #ifndef __BSPLINE_H
00037 #define __BSPLINE_H
00038 
00039 
00040 #include "OFELI_Config.h"
00041 #include "Point.h"
00042 #include "Vect.h"
00043 
00044 
00045 namespace OFELI {
00046 
00047 void compute_intervals_(Vect<size_t> &u, size_t n, size_t t);
00048 double blend_(size_t k, size_t t, const Vect<size_t> &u, double v);
00049 void compute_point_(const Vect<size_t> &u, size_t n, size_t t, double v, 
00050                     const Vect<Point<double> > &control, Point<double> &output);
00051 
00052 
00076 void BSpline(size_t n, size_t t, Vect<Point<double> > &control, 
00077              Vect<Point<double> > &output, size_t num_output);
00078 
00079 } /* namespace OFELI */
00080 
00081 #endif