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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 _BRDFSAMPLE_H_
+#define _BRDFSAMPLE_H_
+
+#include "vec3d.h"
+#include "color.h"
+#include "transformation3d.h"
+#include <ostream>
+
+class brdfSample {
+ public:
+  //////////////////
+  // Constructors //
+  //////////////////
+  brdfSample(void);
+  brdfSample(const vec3d& out, const float pdf, const color& reflectance);
+  brdfSample(const brdfSample& bs);
+
+  ///////////////
+  // Operators //
+  ///////////////
+  brdfSample& operator=(const brdfSample& bs);
+
+  brdfSample operator*(float pdf) const;
+  brdfSample& operator*=(float pdf);
+  
+
+  ////////////////
+  // Inspectors //
+  ////////////////
+  const vec3d& exitantDirection(void) const;
+  float pdf(void) const;
+  const color& reflectance(void) const;
+
+  /////////////
+  // Methods //
+  /////////////
+  brdfSample& transform(const transformation3d& t);
+  brdfSample& inverseTransform(const transformation3d& t);
+
+  /////////////
+  // Friends //
+  /////////////
+  friend void swap(brdfSample& a, brdfSample& b) { a._swap(b); }
+
+  friend brdfSample transform(const brdfSample& s, const transformation3d& t) { brdfSample result(s); return result.transform(t); }
+  friend brdfSample inverseTransform(const brdfSample& s, const transformation3d& t) { brdfSample result(s); return result.inverseTransform(t); }
+
+  friend std::ostream& operator<<(std::ostream& s, const brdfSample& bs)
+  {
+    s << "BrdfSample: -> " << bs._out << " with PDF: " << bs._pdf << ", and reflectance: " << bs._reflectance;
+    return s;
+  }
+
+ private:
+  /////////////////////
+  // Private Methods //
+  /////////////////////
+  void _swap(brdfSample& bs);
+  void _assign(const brdfSample& bs);
+
+  //////////////////////////
+  // Private Data Members //
+  //////////////////////////
+  vec3d _out;
+  float _pdf;
+  color _reflectance;
+};
+
+#endif /* _BRDFSAMPLE_H_ */