| /***************************************************************************** |
| |
| OscSinCos.hpp |
| Copyright (c) 2005 Laurent de Soras |
| |
| --- Legal stuff --- |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| *Tab=3***********************************************************************/ |
| |
| |
| |
| #if defined (OscSinCos_CURRENT_CODEHEADER) |
| #error Recursive inclusion of OscSinCos code header. |
| #endif |
| #define OscSinCos_CURRENT_CODEHEADER |
| |
| #if ! defined (OscSinCos_CODEHEADER_INCLUDED) |
| #define OscSinCos_CODEHEADER_INCLUDED |
| |
| |
| |
| /*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/ |
| |
| #include <cmath> |
| |
| namespace std { } |
| |
| |
| |
| /*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/ |
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| |
| |
| template <class T> |
| OscSinCos <T>::OscSinCos () |
| : _pos_cos (1) |
| , _pos_sin (0) |
| , _step_cos (1) |
| , _step_sin (0) |
| { |
| // Nothing |
| } |
| |
| |
| |
| template <class T> |
| void OscSinCos <T>::set_step (double angle_rad) |
| { |
| using namespace std; |
| |
| _step_cos = static_cast <DataType> (cos (angle_rad)); |
| _step_sin = static_cast <DataType> (sin (angle_rad)); |
| } |
| |
| |
| |
| template <class T> |
| typename OscSinCos <T>::DataType OscSinCos <T>::get_cos () const |
| { |
| return (_pos_cos); |
| } |
| |
| |
| |
| template <class T> |
| typename OscSinCos <T>::DataType OscSinCos <T>::get_sin () const |
| { |
| return (_pos_sin); |
| } |
| |
| |
| |
| template <class T> |
| void OscSinCos <T>::step () |
| { |
| const DataType old_cos = _pos_cos; |
| const DataType old_sin = _pos_sin; |
| |
| _pos_cos = old_cos * _step_cos - old_sin * _step_sin; |
| _pos_sin = old_cos * _step_sin + old_sin * _step_cos; |
| } |
| |
| |
| |
| template <class T> |
| void OscSinCos <T>::clear_buffers () |
| { |
| _pos_cos = static_cast <DataType> (1); |
| _pos_sin = static_cast <DataType> (0); |
| } |
| |
| |
| |
| /*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/ |
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| |
| |
| /*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/ |
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| |
| |
| #endif // OscSinCos_CODEHEADER_INCLUDED |
| |
| #undef OscSinCos_CURRENT_CODEHEADER |
| |
| |
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| /*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/ |
