path: root/hw6/include/diffuseBrdf.h

/******************************************************************/
/* 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 _DIFFUSEBRDF_H_
#define _DIFFUSEBRDF_H_

#include "brdf_base.h"

class diffuseBrdf : public brdf_base {
 public:
  //////////////////
  // Constructors //
  //////////////////
  diffuseBrdf(const color& albedo);
  diffuseBrdf(const diffuseBrdf& src);

  ///////////////
  // Operators //
  ///////////////
  diffuseBrdf& operator=(const diffuseBrdf& src);

  /////////////
  // Methods //
  /////////////
  virtual color shade(const vec3d& in, const vec3d& out) const final override;
  virtual color reflectance(const vec3d& in, const vec3d& out) const final override;
  virtual brdfSample sample(const vec3d& in, float r1, float r2) const final override;

  virtual bool isSpecular(void) const final override;
  virtual bool isDiffuse(void) const final override;

  virtual float reflectivity(void) const final override;

  /////////////
  // Friends //
  /////////////
  friend void swap(diffuseBrdf& a, diffuseBrdf& b) { a._swap(b); }
  friend std::ostream& operator<<(std::ostream& s, const diffuseBrdf& b)
  {
    b._print(s);
    return s;
  }

 private:
  /////////////////////
  // Private Methods //
  /////////////////////
  void _assign(const diffuseBrdf& src);
  void _swap(diffuseBrdf& src);
  virtual void _print(std::ostream& s) const override;

  //////////////////
  // Data Members //
  //////////////////
  color _albedo;
};

#endif /* _DIFFUSEBRDF_H_ */