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/***************************************************************************
* Copyright (C) 2003-2004 by David Saxton *
* david@bluehaze.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef ELEMENTSIGNAL_H
#define ELEMENTSIGNAL_H
/**
@short Provides different signals
@author David Saxton
*/
class ElementSignal
{
public:
enum Type
{
st_sinusoidal,
st_square,
st_sawtooth,
st_triangular
};
ElementSignal();
~ElementSignal();
void setStep( double delta, Type type, double frequency );
/**
* Advances the timer, returns amplitude (between -1 and 1)
*/
double advance();
protected:
Type m_type;
double m_time;
double m_frequency;
double m_delta;
double m_omega; // Used for sinusoidal signal
};
#endif
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