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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