libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <cmath>
#include <vector>

#include <Cg/cg.h>
#include <Cg/cgGL.h>

using namespace std;

extern CGcontext cgc;
extern CGprogram vsh;
extern CGprogram fsh;
extern CGparameter mv;
extern CGparameter mvp;

#include <GL/gl.h>

typedef int soffs; // 32 bit
typedef unsigned int uoffs;
#define OFFS_BITS 31
#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
#define MAXEXTENT (1UL << (OFFS_BITS - 1))

#define GLFLOAT_MAX 1e30
#define GLFLOAT_MIN -1e30

struct vec3 {
  GLfloat x, y, z;
  vec3 () { };
  vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };

  const vec3 operator -() const
  { return vec3 (-x, -y, -z); }
};

const vec3 normalize (const vec3 &v);
const vec3 cross (const vec3 &a, const vec3 &b);

inline const vec3 operator *(const vec3 &a, GLfloat s)
{
  return vec3 (a.x * s, a.y * s, a.z * s);
}

inline GLfloat dot (const vec3 &a, const vec3 &b)
{
  return a.x * b.x + a.y * b.y + a.z * b.z;
}

inline const GLfloat abs (const vec3 &v)
{
  return sqrtf (dot (v, v));
}

struct matrix {
  GLfloat data[4][4];

  const GLfloat operator ()(int i, int j) const { return data[j][i]; };
  GLfloat &operator ()(int i, int j) { return data[j][i]; };

  void diagonal (GLfloat v);
  void clear () { diagonal (0.); };
  void identity () { diagonal (1.); };

  void print (); // ugly

  static const matrix translation (const vec3 &v);
  static const matrix rotation (GLfloat degrees, const vec3 &axis);

  matrix () { };
  matrix (GLfloat diag) { diagonal (diag); };
};

const matrix operator *(const matrix &a, const matrix &b);
const vec3 operator *(const matrix &a, const vec3 &v);

typedef vec3 point;

// a generic plane
struct plane {
  vec3 n;
  GLfloat d;

  GLfloat distance (const point &p) const
  {
    return dot (n, p) + d;
  }

  plane () { };
  plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
};

struct sector {
  soffs x, y, z;

  sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };

  void offset (int subindex, uoffs extent)
  {
    if (subindex & 1) x += extent;
    if (subindex & 2) y += extent;
    if (subindex & 4) z += extent;
  }
};

inline const sector translate (const sector &p, const sector &src, const sector &dst)
{
  sector r;

  r.x = p.x + (dst.x - src.x);
  r.y = p.y + (dst.y - src.y);
  r.z = p.z + (dst.z - src.z);

  return r;
}

void renormalize (sector &s, point &p);

struct colour {
  GLfloat r, g, b, a;
  colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
};

struct texc {
  GLfloat s, t;
  texc () { };
  texc (GLfloat s, GLfloat t) : s(s), t(t) { };
};

struct box {
  sector a, b;

  box() { };

  void reset ()
  {
    a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
    b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
  }

  void add (const box &o);
  void add (const sector &p);
  void add (const point &p);
};

inline const box translate (const box &b, const sector &src, const sector &dst)
{
  box r;

  r.a = translate (b.a, src, dst);
  r.b = translate (b.b, src, dst);

  return r;
}

struct light {
  point p;
  colour c;
  GLfloat intensity;
  GLfloat radius;
};

struct material {
  colour diffuse, specular, emission;
  GLfloat shininess;
};

struct entity_base;
struct draw_context;

extern struct timer {
  static double now;
  static double diff;

  static void frame ();
  timer ();
} timer;

/*
#define MAX_EVENT_TYPES 10
enum event_type { TIMER_EV };
struct event {
   event_type type;
};

typedef callback1<void, event&> event_cb;

class skedjuhlar {

   public:
// only 10 types for now
   private:
      vector <list<event_cb> > event_lists;
   
   public:
      skedjuhlar () {
         event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
      }
      
      void register_event_cb (const event_type &t, const event_cb &e) {
         event_lists[t].push_back (e);
      };
      void send_event (event &e) {
         list<event_cb> &l = event_lists[e.type];
         for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
            (*it)(e);
         }
      };
      void check_events () {
         while (!events.empty ()) {
            event &e = events.pop_front ();
            list<event_cb> &l = event_lists[e->name];
            for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
               (*it)(e);
            }
            delete e; // ugly slow? hai hai..... 183G
         }
      }
};

extern skedjuhlar main_scheduler;
*/

#endif

Revision:	1.18
Committed:	Tue Oct 5 07:09:17 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.17:	+9 -0 lines
Log Message:	* empty log message *
#	Content
1	#ifndef UTIL_H
2	#define UTIL_H
3
4	#include <cmath>
5	#include <vector>
6
7	#include <Cg/cg.h>
8	#include <Cg/cgGL.h>
9
10	using namespace std;
11
12	extern CGcontext cgc;
13	extern CGprogram vsh;
14	extern CGprogram fsh;
15	extern CGparameter mv;
16	extern CGparameter mvp;
17
18	#include <GL/gl.h>
19
20	typedef int soffs; // 32 bit
21	typedef unsigned int uoffs;
22	#define OFFS_BITS 31
23	#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
24	#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
25	#define MAXEXTENT (1UL << (OFFS_BITS - 1))
26
27	#define GLFLOAT_MAX 1e30
28	#define GLFLOAT_MIN -1e30
29
30	struct vec3 {
31	GLfloat x, y, z;
32	vec3 () { };
33	vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
34
35	const vec3 operator -() const
36	{ return vec3 (-x, -y, -z); }
37	};
38
39	const vec3 normalize (const vec3 &v);
40	const vec3 cross (const vec3 &a, const vec3 &b);
41
42	inline const vec3 operator *(const vec3 &a, GLfloat s)
43	{
44	return vec3 (a.x * s, a.y * s, a.z * s);
45	}
46
47	inline GLfloat dot (const vec3 &a, const vec3 &b)
48	{
49	return a.x * b.x + a.y * b.y + a.z * b.z;
50	}
51
52	inline const GLfloat abs (const vec3 &v)
53	{
54	return sqrtf (dot (v, v));
55	}
56
57	struct matrix {
58	GLfloat data[4][4];
59
60	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
61	GLfloat &operator ()(int i, int j) { return data[j][i]; };
62
63	void diagonal (GLfloat v);
64	void clear () { diagonal (0.); };
65	void identity () { diagonal (1.); };
66
67	void print (); // ugly
68
69	static const matrix translation (const vec3 &v);
70	static const matrix rotation (GLfloat degrees, const vec3 &axis);
71
72	matrix () { };
73	matrix (GLfloat diag) { diagonal (diag); };
74	};
75
76	const matrix operator *(const matrix &a, const matrix &b);
77	const vec3 operator *(const matrix &a, const vec3 &v);
78
79	typedef vec3 point;
80
81	// a generic plane
82	struct plane {
83	vec3 n;
84	GLfloat d;
85
86	GLfloat distance (const point &p) const
87	{
88	return dot (n, p) + d;
89	}
90
91	plane () { };
92	plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
93	};
94
95	struct sector {
96	soffs x, y, z;
97
98	sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };
99
100	void offset (int subindex, uoffs extent)
101	{
102	if (subindex & 1) x += extent;
103	if (subindex & 2) y += extent;
104	if (subindex & 4) z += extent;
105	}
106	};
107
108	inline const sector translate (const sector &p, const sector &src, const sector &dst)
109	{
110	sector r;
111
112	r.x = p.x + (dst.x - src.x);
113	r.y = p.y + (dst.y - src.y);
114	r.z = p.z + (dst.z - src.z);
115
116	return r;
117	}
118
119	void renormalize (sector &s, point &p);
120
121	struct colour {
122	GLfloat r, g, b, a;
123	colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
124	};
125
126	struct texc {
127	GLfloat s, t;
128	texc () { };
129	texc (GLfloat s, GLfloat t) : s(s), t(t) { };
130	};
131
132	struct box {
133	sector a, b;
134
135	box() { };
136
137	void reset ()
138	{
139	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
140	b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
141	}
142
143	void add (const box &o);
144	void add (const sector &p);
145	void add (const point &p);
146	};
147
148	inline const box translate (const box &b, const sector &src, const sector &dst)
149	{
150	box r;
151
152	r.a = translate (b.a, src, dst);
153	r.b = translate (b.b, src, dst);
154
155	return r;
156	}
157
158	struct light {
159	point p;
160	colour c;
161	GLfloat intensity;
162	GLfloat radius;
163	};
164
165	struct material {
166	colour diffuse, specular, emission;
167	GLfloat shininess;
168	};
169
170	struct entity_base;
171	struct draw_context;
172
173	extern struct timer {
174	static double now;
175	static double diff;
176
177	static void frame ();
178	timer ();
179	} timer;
180
181	/*
182	#define MAX_EVENT_TYPES 10
183	enum event_type { TIMER_EV };
184	struct event {
185	event_type type;
186	};
187
188	typedef callback1<void, event&> event_cb;
189
190	class skedjuhlar {
191
192	public:
193	// only 10 types for now
194	private:
195	vector <list<event_cb> > event_lists;
196
197	public:
198	skedjuhlar () {
199	event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
200	}
201
202	void register_event_cb (const event_type &t, const event_cb &e) {
203	event_lists[t].push_back (e);
204	};
205	void send_event (event &e) {
206	list<event_cb> &l = event_lists[e.type];
207	for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
208	(*it)(e);
209	}
210	};
211	void check_events () {
212	while (!events.empty ()) {
213	event &e = events.pop_front ();
214	list<event_cb> &l = event_lists[e->name];
215	for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
216	(*it)(e);
217	}
218	delete e; // ugly slow? hai hai..... 183G
219	}
220	}
221	};
222
223	extern skedjuhlar main_scheduler;
224	*/
225
226	#endif
227