BogaudioModules

BogaudioModules for VCV Rack
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OscSinCos.hpp (2430B)

      1 /*****************************************************************************
      2 
      3         OscSinCos.hpp
      4         By Laurent de Soras
      5 
      6 --- Legal stuff ---
      7 
      8 This program is free software. It comes without any warranty, to
      9 the extent permitted by applicable law. You can redistribute it
     10 and/or modify it under the terms of the Do What The Fuck You Want
     11 To Public License, Version 2, as published by Sam Hocevar. See
     12 http://sam.zoy.org/wtfpl/COPYING for more details.
     13 
     14 *Tab=3***********************************************************************/
     15 
     16 
     17 
     18 #if defined (ffft_OscSinCos_CURRENT_CODEHEADER)
     19 	#error Recursive inclusion of OscSinCos code header.
     20 #endif
     21 #define	ffft_OscSinCos_CURRENT_CODEHEADER
     22 
     23 #if ! defined (ffft_OscSinCos_CODEHEADER_INCLUDED)
     24 #define	ffft_OscSinCos_CODEHEADER_INCLUDED
     25 
     26 
     27 
     28 /*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
     29 
     30 #include	<cmath>
     31 
     32 namespace std { }
     33 
     34 
     35 
     36 namespace ffft
     37 {
     38 
     39 
     40 
     41 /*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
     42 
     43 
     44 
     45 template <class T>
     46 OscSinCos <T>::OscSinCos ()
     47 :	_pos_cos (1)
     48 ,	_pos_sin (0)
     49 ,	_step_cos (1)
     50 ,	_step_sin (0)
     51 {
     52 	// Nothing
     53 }
     54 
     55 
     56 
     57 template <class T>
     58 void	OscSinCos <T>::set_step (double angle_rad)
     59 {
     60 	using namespace std;
     61 
     62 	_step_cos = static_cast <DataType> (cos (angle_rad));
     63 	_step_sin = static_cast <DataType> (sin (angle_rad));
     64 }
     65 
     66 
     67 
     68 template <class T>
     69 typename OscSinCos <T>::DataType	OscSinCos <T>::get_cos () const
     70 {
     71 	return (_pos_cos);
     72 }
     73 
     74 
     75 
     76 template <class T>
     77 typename OscSinCos <T>::DataType	OscSinCos <T>::get_sin () const
     78 {
     79 	return (_pos_sin);
     80 }
     81 
     82 
     83 
     84 template <class T>
     85 void	OscSinCos <T>::step ()
     86 {
     87 	const DataType	old_cos = _pos_cos;
     88 	const DataType	old_sin = _pos_sin;
     89 
     90 	_pos_cos = old_cos * _step_cos - old_sin * _step_sin;
     91 	_pos_sin = old_cos * _step_sin + old_sin * _step_cos;
     92 }
     93 
     94 
     95 
     96 template <class T>
     97 void	OscSinCos <T>::clear_buffers ()
     98 {
     99 	_pos_cos = static_cast <DataType> (1);
    100 	_pos_sin = static_cast <DataType> (0);
    101 }
    102 
    103 
    104 
    105 /*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
    106 
    107 
    108 
    109 /*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
    110 
    111 
    112 
    113 }	// namespace ffft
    114 
    115 
    116 
    117 #endif	// ffft_OscSinCos_CODEHEADER_INCLUDED
    118 
    119 #undef ffft_OscSinCos_CURRENT_CODEHEADER
    120 
    121 
    122 
    123 /*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/