libgender/view.h

#ifndef VIEW_H
#define VIEW_H

#include <set>
#include <map>
#include <utility>

using namespace std;

#include "util.h"
#include "event.h"

struct visibility_state
{
  unsigned int generation;
  enum { UNKNOWN, OCCLUDED, PARTIAL, FULL } visibility;
  double last;

  visibility_state () : generation(0), last(0.), visibility(UNKNOWN) { };
};

struct occ_query
{
  struct view &v;
  GLuint id;
  GLuint r;

  occ_query (view &v, GLuint id, GLuint r) : v(v), id(id), r(r) { };
};

typedef event_receiver<void, occ_query> recv_occ_query;

struct view
{
  sector orig;
  point p;
  vec3 d, u;
  GLfloat fov;
  GLfloat z_near, z_far, c_far;
  int w, h;
  GLfloat pixfact; // how many pixels on screen are drawn by a unit length line, *roughly*

  GLfloat gamma;

  // only to be used by friends: TODO

  GLfloat nz_far, nc_far;
  GLfloat diagfact; // bounding box border to depth factor
  GLfloat perspfact; // perspfact * (1/depth)=> pixels

  matrix projection;

  struct {
    plane l, r, t, b, n, f;
  } frustum;

  enum mode { DEPTH, LIGHTED } mode;
  struct light *l;
  set<const entity *> drawn;

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

  vector<octant *> vislist; // octants partially or fully visible in frustum
  vector<octant *> farlist; // octants possibly visible

  typedef pair<recv_occ_query *, GLint> oq_data;
  vector<oq_data> occ_queries;
  void begin_occ_query (recv_occ_query &recv);
  void end_occ_query ();

  void reset_projection ();

  // public
  
  void begin ();
  void pass (enum mode m);
  void end ();

  bool may_draw (const entity *e);

  view ();
  ~view ();
};

#endif

Revision:	1.21
Committed:	Mon Oct 11 00:05:48 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+2 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#ifndef VIEW_H
2			#define VIEW_H
3
4			#include <set>
5	root	1.4	#include <map>
6	root	1.17	#include <utility>
7	root	1.1
8			using namespace std;
9
10			#include "util.h"
11	root	1.17	#include "event.h"
12	root	1.1
13	root	1.20	struct visibility_state
14			{
15	root	1.12	unsigned int generation;
16			enum { UNKNOWN, OCCLUDED, PARTIAL, FULL } visibility;
17	root	1.18	double last;
18	root	1.12
19	root	1.18	visibility_state () : generation(0), last(0.), visibility(UNKNOWN) { };
20	root	1.12	};
21
22	root	1.20	struct occ_query
23			{
24	root	1.17	struct view &v;
25			GLuint id;
26			GLuint r;
27
28			occ_query (view &v, GLuint id, GLuint r) : v(v), id(id), r(r) { };
29			};
30
31			typedef event_receiver<void, occ_query> recv_occ_query;
32
33	root	1.20	struct view
34			{
35	root	1.2	sector orig;
36			point p;
37			vec3 d, u;
38	root	1.13	GLfloat fov;
39	root	1.19	GLfloat z_near, z_far, c_far;
40	root	1.2	int w, h;
41	root	1.21	GLfloat pixfact; // how many pixels on screen are drawn by a unit length line, roughly
42	root	1.2
43	root	1.13	GLfloat gamma;
44	root	1.4
45	root	1.17	// only to be used by friends: TODO
46	root	1.5
47	root	1.19	GLfloat nz_far, nc_far;
48	root	1.17	GLfloat diagfact; // bounding box border to depth factor
49	root	1.21	GLfloat perspfact; // perspfact * (1/depth)=> pixels
50	root	1.13
51	root	1.8	matrix projection;
52	root	1.9
53	root	1.5	struct {
54			plane l, r, t, b, n, f;
55			} frustum;
56	root	1.14
57	root	1.13	enum mode { DEPTH, LIGHTED } mode;
58	root	1.20	struct light *l;
59	root	1.15	set<const entity *> drawn;
60	root	1.4
61			unsigned int generation;
62			map<octant *, visibility_state> vismap;
63	root	1.17
64	root	1.16	vector<octant *> vislist; // octants partially or fully visible in frustum
65	root	1.14	vector<octant *> farlist; // octants possibly visible
66	root	1.17
67			typedef pair<recv_occ_query *, GLint> oq_data;
68			vector<oq_data> occ_queries;
69			void begin_occ_query (recv_occ_query &recv);
70			void end_occ_query ();
71	root	1.13
72			void reset_projection ();
73
74			// public
75
76			void begin ();
77			void pass (enum mode m);
78			void end ();
79	root	1.1
80	root	1.15	bool may_draw (const entity *e);
81	root	1.1
82	root	1.12	view ();
83			~view ();
84	root	1.1	};
85	root	1.7
86	root	1.1	#endif
87