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elementsignal.h

/***************************************************************************
 *   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
*/
00018 class ElementSignal
{
public:
      enum Type
      {
            st_sinusoidal,
            st_square,
            st_sawtooth,
            st_triangular
      };
      ElementSignal();
      ~ElementSignal();
      
      void setStep(Type type, double frequency );
      /**
       * Advances the timer, returns amplitude (between -1 and 1)
       */
      double advance(double delta);

protected:
      Type m_type;
      double m_time;
      double m_frequency;
      double m_omega; // Used for sinusoidal signal
};

#endif

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