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_base
{
  unsigned int generation; // freshness check
};

struct visible {
  visibility_base *get_visibility (view &ctx);
  virtual visibility_base *new_visibility () = 0;
  virtual void clear_visibility (visibility_base *vs) = 0;
};

struct occ_query
{
  struct view &ctx;
  void *id;
  GLuint count;

  occ_query (view &ctx, void *id, GLuint count) : ctx(ctx), id(id), count(count) { };
};

typedef event_receiver<void, occ_query> recv_occ_query;

struct pass
{
  struct light *l;

  pass (light *l) : l(l) { }
};

extern pass pass_depth;

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*
  sector eorig; // orig of currently-rendered entity in relation to the camera

  GLfloat gamma;

  // only to be used by friends: TODO

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

  gl::matrix projection;

  struct {
    plane l, r, t, b, n, f;
    cone c;
    sphere s;
  } frustum;

  // the passes
  enum pass_type {
    DEPTH,      // mandatory, render depth only
    POSTDEPTH,  // mandatory, occ tests or ignored
    LIGHTED,    // optional, render faces in full glory
  } pass_type;

  pass *pass_data;

  set<const entity *> drawn; // TODO: put drawn info and octant+entity visibility info into vismap!

  unsigned int generation;
  typedef map<visible *, visibility_base *> visibility_map;
  visibility_map vismap;

  vector<octant *> vislist; // octants that want to be drawn

  struct oq_data {
    recv_occ_query *recv;
    GLint id;
    void *data;

    oq_data (recv_occ_query *recv, GLint id, void *data) : recv(recv), id(id), data(data) { };
  };
  vector<oq_data> occ_queries;
  void begin_occ_query (recv_occ_query &recv, void *id = 0);
  void end_occ_query ();

  void reset_projection ();

  // public
  
  void begin ();
  void render (enum pass_type p, pass &data);
  void end ();

  bool may_draw (const entity *e);

  view ();
  ~view ();
};

struct light : view
{
  colour c;
  GLfloat intensity;
  GLfloat radius;
};

#endif

Revision:	1.31
Committed:	Tue Nov 2 23:26:46 2004 UTC (19 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.30:	+21 -3 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	1.22	struct visibility_base
14	root	1.20	{
15	root	1.22	unsigned int generation; // freshness check
16			};
17	root	1.12
18	root	1.22	struct visible {
19			visibility_base *get_visibility (view &ctx);
20			virtual visibility_base *new_visibility () = 0;
21			virtual void clear_visibility (visibility_base *vs) = 0;
22	root	1.12	};
23
24	root	1.20	struct occ_query
25			{
26	root	1.26	struct view &ctx;
27	root	1.22	void *id;
28	root	1.26	GLuint count;
29	root	1.17
30	root	1.26	occ_query (view &ctx, void *id, GLuint count) : ctx(ctx), id(id), count(count) { };
31	root	1.17	};
32
33			typedef event_receiver<void, occ_query> recv_occ_query;
34
35	root	1.31	struct pass
36			{
37			struct light *l;
38
39			pass (light *l) : l(l) { }
40			};
41
42			extern pass pass_depth;
43
44	root	1.20	struct view
45			{
46	root	1.2	sector orig;
47			point p;
48			vec3 d, u;
49	root	1.13	GLfloat fov;
50	root	1.19	GLfloat z_near, z_far, c_far;
51	root	1.2	int w, h;
52	root	1.21	GLfloat pixfact; // how many pixels on screen are drawn by a unit length line, roughly
53	root	1.30	sector eorig; // orig of currently-rendered entity in relation to the camera
54	root	1.2
55	root	1.13	GLfloat gamma;
56	root	1.4
57	root	1.17	// only to be used by friends: TODO
58	root	1.5
59	root	1.28	GLfloat nz_far, nz_near, nc_far;
60	root	1.17	GLfloat diagfact; // bounding box border to depth factor
61	root	1.21	GLfloat perspfact; // perspfact * (1/depth)=> pixels
62	root	1.13
63	root	1.25	gl::matrix projection;
64	root	1.9
65	root	1.5	struct {
66			plane l, r, t, b, n, f;
67	root	1.27	cone c;
68			sphere s;
69	root	1.5	} frustum;
70	root	1.14
71	root	1.26	// the passes
72	root	1.31	enum pass_type {
73	root	1.26	DEPTH, // mandatory, render depth only
74			POSTDEPTH, // mandatory, occ tests or ignored
75			LIGHTED, // optional, render faces in full glory
76	root	1.31	} pass_type;
77
78			pass *pass_data;
79	root	1.26
80			set<const entity *> drawn; // TODO: put drawn info and octant+entity visibility info into vismap!
81	root	1.4
82			unsigned int generation;
83	root	1.22	typedef map<visible , visibility_base > visibility_map;
84			visibility_map vismap;
85	root	1.17
86	root	1.24	vector<octant *> vislist; // octants that want to be drawn
87	root	1.17
88	root	1.22	struct oq_data {
89			recv_occ_query *recv;
90			GLint id;
91			void *data;
92
93			oq_data (recv_occ_query recv, GLint id, void data) : recv(recv), id(id), data(data) { };
94			};
95	root	1.17	vector<oq_data> occ_queries;
96	root	1.22	void begin_occ_query (recv_occ_query &recv, void *id = 0);
97	root	1.17	void end_occ_query ();
98	root	1.13
99			void reset_projection ();
100
101			// public
102
103			void begin ();
104	root	1.31	void render (enum pass_type p, pass &data);
105	root	1.13	void end ();
106	root	1.1
107	root	1.15	bool may_draw (const entity *e);
108	root	1.1
109	root	1.12	view ();
110			~view ();
111	root	1.31	};
112
113			struct light : view
114			{
115			colour c;
116			GLfloat intensity;
117			GLfloat radius;
118	root	1.1	};
119	root	1.7
120	root	1.1	#endif
121