Qucs-core
0.0.19
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00001 /* 00002 * interpolator.h - interpolator class definitions 00003 * 00004 * Copyright (C) 2009 Stefan Jahn <stefan@lkcc.org> 00005 * 00006 * This is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2, or (at your option) 00009 * any later version. 00010 * 00011 * This software is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this package; see the file COPYING. If not, write to 00018 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 00019 * Boston, MA 02110-1301, USA. 00020 * 00021 * $Id$ 00022 * 00023 */ 00024 00025 #ifndef __INTERPOLATOR_H__ 00026 #define __INTERPOLATOR_H__ 00027 00028 // Type of data and interpolators. 00029 #define INTERPOL_LINEAR 1 00030 #define INTERPOL_CUBIC 2 00031 #define INTERPOL_HOLD 4 00032 00033 #define REPEAT_NO 1 00034 #define REPEAT_YES 2 00035 00036 #define DATA_RECTANGULAR 0x0100 00037 #define DATA_POLAR 0x0200 00038 #define DATA_MASK_DOMAIN 0xFF00 00039 #define DATA_COMPLEX 0x0001 00040 #define DATA_REAL 0x0002 00041 #define DATA_MASK_TYPE 0x00FF 00042 00043 namespace qucs { 00044 00045 class interpolator 00046 { 00047 public: 00048 interpolator (); 00049 ~interpolator (); 00050 00051 void vectors (nr_double_t *, nr_double_t *, int); 00052 void vectors (nr_complex_t *, nr_double_t *, int); 00053 void rvectors (qucs::vector *, qucs::vector *); 00054 void cvectors (qucs::vector *, qucs::vector *); 00055 void prepare (int, int, int domain = DATA_RECTANGULAR); 00056 nr_double_t rinterpolate (nr_double_t); 00057 nr_complex_t cinterpolate (nr_double_t); 00058 00059 private: 00060 int findIndex (nr_double_t); 00061 int findIndex_old (nr_double_t); 00062 nr_double_t linear (nr_double_t, 00063 nr_double_t, nr_double_t, nr_double_t, nr_double_t); 00064 nr_double_t rlinear (nr_double_t, int); 00065 nr_complex_t clinear (nr_double_t, int); 00066 void cleanup (void); 00067 00068 private: 00069 int dataType; 00070 int interpolType; 00071 int repeat; 00072 int length; 00073 nr_double_t * rx; 00074 nr_double_t * ry; 00075 nr_double_t duration; 00076 spline * rsp, * isp; 00077 nr_complex_t * cy; 00078 }; 00079 00080 } // namespace qucs 00081 00082 #endif /* __INTERPOLATOR_H__ */