#ifndef VIEW_H
#define VIEW_H

#include <set>
#include <map>

using namespace std;

#include "util.h"

struct view {
  sector orig;
  point p;
  vec3 d, u;
  float fov;
  int w, h;

  void draw (draw_context &ctx);
};

struct visibility_state {
  unsigned int generation;
  enum { OCCLUDED, VISIBLE } visibility;

  visibility_state () : generation(0), visibility(OCCLUDED) { };
};

struct draw_context {
  gl_matrix projection;
  view &v;
  enum { DEPTH, LIGHTED } mode;
  light *l;
  set<entity_base *> drawn;

  unsigned int generation;
  map<octant *, visibility_state> vismap;

  bool may_draw (entity_base *e);

  draw_context (view &v);
  ~draw_context ();
};

#endif