1 files changed, 64 insertions, 0 deletions
diff --git a/src/electronics/simulation/elementsignal.cpp b/src/electronics/simulation/elementsignal.cpp
new file mode 100644
index 0000000..31d7d78
--- /dev/null
+++ b/src/electronics/simulation/elementsignal.cpp
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *   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.                                   *
+ ***************************************************************************/
+
+#include "elementsignal.h"
+#include <cmath>
+
+ElementSignal::ElementSignal()
+{
+	m_type = ElementSignal::st_sinusoidal;
+	m_time = 0.;
+	m_frequency = 0.;
+}
+
+ElementSignal::~ElementSignal()
+{
+}
+
+void ElementSignal::setStep( double delta, Type type, double frequency )
+{
+	m_type = type;
+	m_delta = delta;
+	m_frequency = frequency;
+	m_omega = 6.283185307179586*m_frequency;
+	m_time = 1./(4.*m_frequency);
+}
+
+double ElementSignal::advance()
+{
+	m_time += m_delta;
+	if ( m_time >= 1./m_frequency ) m_time -= 1./m_frequency;
+	
+	switch (m_type)
+	{
+		case ElementSignal::st_sawtooth:
+		{
+			// TODO Sawtooth signal
+			return 0.;
+		}
+		case ElementSignal::st_square:
+		{
+			return (sin(m_time*m_omega)>=0)?1:-1;
+		}
+		case ElementSignal::st_triangular:
+		{
+			// TODO Triangular signal
+			return 0.;
+		}
+		case ElementSignal::st_sinusoidal:
+		default:
+		{
+			return sin(m_time*m_omega);
+		}
+	}
+}
+
+
+