/******************************************************************/
/* 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 _SCENE_H_
#define _SCENE_H_

#include <vector>
#include <string>
#include <memory>

#include "ray.h"
#include "image.h"
#include "camera.h"
#include "render_base.h"
#include "environmentMap.h"
#include "boundedCompound.h"
#include "lightsource_base.h"
#include "intersectionPoint.h"

class scene {
  friend void importScene(const std::string&, scene&);
 public:
  //////////////////
  // Constructors //
  //////////////////
  scene(void) {}
  scene(const scene&) = delete;

  ///////////////
  // Operators //
  ///////////////
  camera& operator=(const camera&) = delete;

  ////////////////
  // Inspectors //
  ////////////////
  const camera& getCamera(void) const;

  const lightsource_base& getLightsource(size_t idx) const;
  size_t numberOfLightsources(void) const;

  bool hasEnvironmentMap(void) const;
  color evaluateEnvironmentMap(const vec3d& direction) const; 

  /////////////
  // Methods //
  /////////////
  intersectionPoint intersect(const ray& r) const;

  image render(void) const;

 private:
  //////////////////
  // Data Members //
  //////////////////
  camera _camera;
  std::unique_ptr<const boundedCompound> _sceneGraphRoot;
  std::vector<std::shared_ptr<const lightsource_base>> _lightsources;
  std::unique_ptr<const render_base> _renderEngine;
  std::unique_ptr<const environmentMap> _environmentMap;
};

#endif /* _SCENE_H_ */