#ifndef _SCENE_H
#define _SCENE_H

#include <vector>
#include <string>
#include "shape.h"
#include "vec.h"

#define MAX_DIST 2e9
#define EPS 1
#define MAX_DEPTH 3

class Scene
{
  public:
    typedef std::vector<Shape*> ObjVec;
    typedef std::vector<Sphere*> LightVec;

	  Scene(std::string fn);  // constructor goes *first* :p

    Shape* getObj( Ray& r );
    void addObj( Shape* s )  { objs.push_back(s); }
    void addLight( Sphere* s ) { lights.push_back(s); }

    void setEyePos(Vec3D e)  { eye = e; }
    void setGazeVec(Vec3D g) { gaze = g; }
    void setUpVec(Vec3D u)   { up = u; }

    Vec3D transform(const Vec3D & p);

	  int   rayTrace(double i, double j);
	  Vec3D rayTrace(Ray& r, int d);

  private:
    ObjVec objs;
    LightVec lights;
    Vec3D eye, gaze, up;  // defines the eye orientation
};

#endif