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diff --git a/APEX_1.4/include/emitter/ModuleEmitter.h b/APEX_1.4/include/emitter/ModuleEmitter.h
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+++ b/APEX_1.4/include/emitter/ModuleEmitter.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 MODULE_EMITTER_H
+#define MODULE_EMITTER_H
+
+#include "Apex.h"
+
+namespace nvidia
+{
+namespace apex
+{
+
+
+PX_PUSH_PACK_DEFAULT
+
+class EmitterAsset;
+class EmitterAssetAuthoring;
+
+class GroundEmitterAsset;
+class GroundEmitterAssetAuthoring;
+
+class ImpactEmitterAsset;
+class ImpactEmitterAssetAuthoring;
+
+
+/**
+\brief An APEX Module that provides generic Emitter classes
+*/
+class ModuleEmitter : public Module
+{
+protected:
+	virtual ~ModuleEmitter() {}
+
+public:
+
+	/// get rate scale. Rate parameter in all emitters will be multiplied by rate scale.
+	virtual float 	getRateScale() const = 0;
+	
+	/// get density scale. Density parameter in all emitters except ground emitters will be multiplied by density scale.
+	virtual float 	getDensityScale() const = 0;
+	
+	/// get ground density scale. Density parameter in all ground emitters will be multiplied by ground density scale.
+	virtual float 	getGroundDensityScale() const = 0;
+
+	/// set rate scale. Rate parameter in all module emitters will be multiplied by rate scale.
+	virtual void 	setRateScale(float rateScale) = 0;
+
+	/// set density scale. Density parameter in all emitters except ground emitters will be multiplied by density scale.
+	virtual void 	setDensityScale(float densityScale) = 0;
+
+	/// set ground density scale. Density parameter in all ground emitters will be multiplied by ground density scale.
+	virtual void 	setGroundDensityScale(float groundDensityScale) = 0;
+};
+
+
+
+PX_POP_PACK
+
+}
+} // end namespace nvidia
+
+#endif // MODULE_EMITTER_H