1 /*
2  * lfo.cpp - defination of Lfo class.
3  *
4  * Copyright (c) 2014 David French <dave/dot/french3/at/googlemail/dot/com>
5  *
6  * This file is part of LMMS - https://lmms.io
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public
19  * License along with this program (see COPYING); if not, write to the
20  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21  * Boston, MA 02110-1301 USA.
22  *
23  */
24 
25 #include "Lfo.h"
26 #include "lmms_math.h"
27 
28 
29 
30 
Lfo(int samplerate)31 Lfo::Lfo( int samplerate )
32 {
33 	m_samplerate = samplerate;
34 	m_twoPiOverSr = F_2PI / samplerate;
35 }
36 
37 
38 
39 
tick()40 float Lfo::tick()
41 {
42 	float output = sinf( m_phase );
43 	m_phase += m_increment;
44 
45 	return output;
46 }
47