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diff --git a/hw4/include/diffuseReflectanceShader.h b/hw4/include/diffuseReflectanceShader.h
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+/******************************************************************/
+/* This file is part of the homework assignments for CSCI-427/527 */
+/* at The College of William & Mary and authored by Pieter Peers. */
+/* No part of this file, whether altered or in original form, can */
+/* be distributed or used outside the context of CSCI-427/527     */
+/* without consent of either the College of William & Mary or     */
+/* Pieter Peers.                                                  */
+/******************************************************************/
+#ifndef _DIFFUSEREFLECTANCESHADER_H_
+#define _DIFFUSEREFLECTANCESHADER_H_
+
+#include "diffuseBrdf.h"
+#include "reflectanceParameter.h"
+#include "reflectanceShader_base.h"
+
+class diffuseReflectanceShader : public reflectanceShader_base {
+ public:
+  /////////////////
+  // Constructor //
+  /////////////////
+  diffuseReflectanceShader(const colorReflectanceParameter& albedo=colorReflectanceParameter(color(1.0f, 1.0f, 1.0f)));
+  diffuseReflectanceShader(const diffuseReflectanceShader& ) = delete;
+
+  ///////////////
+  // Operators //
+  ///////////////
+  diffuseReflectanceShader& operator=(const diffuseReflectanceShader&) = delete;
+
+protected:
+  ///////////////////////
+  // Protected Methods //
+  ///////////////////////
+  virtual std::unique_ptr<const brdf_base> make_brdf(const vec2d& textureCoord) const override;
+
+  virtual void _print(std::ostream& s) const override;
+
+private:
+  //////////////////
+  // Data Members //
+  //////////////////
+  colorReflectanceParameter _albedo;
+};
+
+#endif /* _DIFFUSEREFLECTANCESHADER_H_ */
+