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diff --git a/APEX_1.4/common/include/variable_oscillator.h b/APEX_1.4/common/include/variable_oscillator.h
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+++ b/APEX_1.4/common/include/variable_oscillator.h
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+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+
+#ifndef VARIABLE_OSCILLATOR_H
+#define VARIABLE_OSCILLATOR_H
+
+#include "ApexUsingNamespace.h"
+#include "PsUserAllocated.h"
+
+namespace nvidia
+{
+namespace apex
+{
+
+class variableOscillator : public UserAllocated
+{
+public:
+	variableOscillator(float min, float max, float initial, float period);
+	~variableOscillator();
+	float updateVariableOscillator(float deltaTime);
+
+private:
+	float computeEndVal(float current, float max_or_min);
+
+private:
+	float	mMin;
+	float	mMax;
+	float	mPeriod;
+
+	float	mCumTime;
+	float	mStartVal;
+	float	mEndVal;
+	float	mLastVal;
+	bool	mGoingUp;
+};
+
+}
+} // namespace nvidia::apex
+
+#endif