/******************************************************************/
/* 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 _PATHTRACING_H_
#define _PATHTRACING_H_

#include "scene.h"
#include "render_base.h"
#include "intersectionPoint.h"

class pathtracing : public render_base {
 public:
  //////////////////
  // Constructors //
  //////////////////
  pathtracing(unsigned int samplesPerPixel, bool directOnly=false);

  /////////////
  // Methods //
  /////////////
  virtual image render(const scene& s) const override;

 private:
  /////////////////////
  // Private Methods //
  /////////////////////
  color radiance(const scene& s, const ray& r, const intersectionPoint& ip) const;
  color directRadiance(const scene& s, const intersectionPoint& ip) const;
  color indirectRadiance(const scene& s, const intersectionPoint& ip) const;

  //////////////////
  // Data Members //
  //////////////////
  unsigned int _samples;
  bool _directOnly;
};

#endif /* _RECURSIVERAYTRACING_H_ */