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diff --git a/hw3/include/shadingFrameTransformation.h b/hw3/include/shadingFrameTransformation.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 _SHADINGFRAMETRANSFORMATION_H_
+#define _SHADINGFRAMETRANSFORMATION_H_
+
+#include <memory>
+
+#include "vec2d.h"
+#include "shader_base.h"
+#include "transformation3d.h"
+
+class shadingFrameTransformation : public shader_base {
+ public:
+  //////////////////
+  // Constructors //
+  //////////////////
+  shadingFrameTransformation(const std::shared_ptr<const shader_base>& shader);
+  shadingFrameTransformation(const shadingFrameTransformation&) = delete;
+
+  ///////////////
+  // Operators //
+  ///////////////
+  shadingFrameTransformation& operator=(const shadingFrameTransformation&) = delete;
+
+  /////////////
+  // Methods //
+  /////////////
+  virtual color shade(const intersectionPoint& ip, const vec3d& light_dir) const final override;
+
+  virtual color reflectance(const intersectionPoint& ip, const vec3d& light_dir, const shaderProperties& properties=shaderProperties()) const final override;
+  virtual brdfSample sample(const intersectionPoint& ip, float r1, float r2, const shaderProperties& properties=shaderProperties()) const final override;
+  virtual float reflectivity(const intersectionPoint& ip, const shaderProperties& properties=shaderProperties()) const final override;
+  virtual color emittance(const intersectionPoint& ip) const final override;
+
+  virtual shaderProperties properties(const intersectionPoint& ip) const final override;
+
+
+ protected:
+  ///////////////////////
+  // Protected Methods //
+  ///////////////////////
+  virtual transformation3d _transformation(const vec2d& textureCoord) const = 0;
+  virtual void _print(std::ostream& s) const = 0;
+
+  //////////////////
+  // Data Members //
+  //////////////////
+  std::shared_ptr<const shader_base> _shader;
+};
+
+#endif /* _SHADINGFRAMETRANSFORMATION_H_ */