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, mvp, lightpos;

#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 view;

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:	1.20
Committed:	Wed Oct 6 00:55:37 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+1 -1 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, mvp, lightpos;
16
17	#include <GL/gl.h>
18
19	typedef int soffs; // 32 bit
20	typedef unsigned int uoffs;
21	#define OFFS_BITS 31
22	#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
23	#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
24	#define MAXEXTENT (1UL << (OFFS_BITS - 1))
25
26	#define GLFLOAT_MAX 1e30
27	#define GLFLOAT_MIN -1e30
28
29	struct vec3 {
30	GLfloat x, y, z;
31	vec3 () { };
32	vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
33
34	const vec3 operator -() const
35	{ return vec3 (-x, -y, -z); }
36	};
37
38	const vec3 normalize (const vec3 &v);
39	const vec3 cross (const vec3 &a, const vec3 &b);
40
41	inline const vec3 operator *(const vec3 &a, GLfloat s)
42	{
43	return vec3 (a.x * s, a.y * s, a.z * s);
44	}
45
46	inline GLfloat dot (const vec3 &a, const vec3 &b)
47	{
48	return a.x * b.x + a.y * b.y + a.z * b.z;
49	}
50
51	inline const GLfloat abs (const vec3 &v)
52	{
53	return sqrtf (dot (v, v));
54	}
55
56	struct matrix {
57	GLfloat data[4][4];
58
59	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
60	GLfloat &operator ()(int i, int j) { return data[j][i]; };
61
62	void diagonal (GLfloat v);
63	void clear () { diagonal (0.); };
64	void identity () { diagonal (1.); };
65
66	void print (); // ugly
67
68	static const matrix translation (const vec3 &v);
69	static const matrix rotation (GLfloat degrees, const vec3 &axis);
70
71	matrix () { };
72	matrix (GLfloat diag) { diagonal (diag); };
73	};
74
75	const matrix operator *(const matrix &a, const matrix &b);
76	const vec3 operator *(const matrix &a, const vec3 &v);
77
78	typedef vec3 point;
79
80	// a generic plane
81	struct plane {
82	vec3 n;
83	GLfloat d;
84
85	GLfloat distance (const point &p) const
86	{
87	return dot (n, p) + d;
88	}
89
90	plane () { };
91	plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
92	};
93
94	struct sector {
95	soffs x, y, z;
96
97	sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };
98
99	void offset (int subindex, uoffs extent)
100	{
101	if (subindex & 1) x += extent;
102	if (subindex & 2) y += extent;
103	if (subindex & 4) z += extent;
104	}
105	};
106
107	inline const sector translate (const sector &p, const sector &src, const sector &dst)
108	{
109	sector r;
110
111	r.x = p.x + (dst.x - src.x);
112	r.y = p.y + (dst.y - src.y);
113	r.z = p.z + (dst.z - src.z);
114
115	return r;
116	}
117
118	void renormalize (sector &s, point &p);
119
120	struct colour {
121	GLfloat r, g, b, a;
122	colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
123	};
124
125	struct texc {
126	GLfloat s, t;
127	texc () { };
128	texc (GLfloat s, GLfloat t) : s(s), t(t) { };
129	};
130
131	struct box {
132	sector a, b;
133
134	box() { };
135
136	void reset ()
137	{
138	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
139	b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
140	}
141
142	void add (const box &o);
143	void add (const sector &p);
144	void add (const point &p);
145	};
146
147	inline const box translate (const box &b, const sector &src, const sector &dst)
148	{
149	box r;
150
151	r.a = translate (b.a, src, dst);
152	r.b = translate (b.b, src, dst);
153
154	return r;
155	}
156
157	struct light {
158	point p;
159	colour c;
160	GLfloat intensity;
161	GLfloat radius;
162	};
163
164	struct material {
165	colour diffuse, specular, emission;
166	GLfloat shininess;
167	};
168
169	struct entity_base;
170	struct view;
171
172	extern struct timer {
173	static double now;
174	static double diff;
175
176	static void frame ();
177	timer ();
178	} timer;
179
180	/*
181	#define MAX_EVENT_TYPES 10
182	enum event_type { TIMER_EV };
183	struct event {
184	event_type type;
185	};
186
187	typedef callback1<void, event&> event_cb;
188
189	class skedjuhlar {
190
191	public:
192	// only 10 types for now
193	private:
194	vector <list<event_cb> > event_lists;
195
196	public:
197	skedjuhlar () {
198	event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
199	}
200
201	void register_event_cb (const event_type &t, const event_cb &e) {
202	event_lists[t].push_back (e);
203	};
204	void send_event (event &e) {
205	list<event_cb> &l = event_lists[e.type];
206	for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
207	(*it)(e);
208	}
209	};
210	void check_events () {
211	while (!events.empty ()) {
212	event &e = events.pop_front ();
213	list<event_cb> &l = event_lists[e->name];
214	for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
215	(*it)(e);
216	}
217	delete e; // ugly slow? hai hai..... 183G
218	}
219	}
220	};
221
222	extern skedjuhlar main_scheduler;
223	*/
224
225	#endif
226