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 *
#	User	Rev	Content
1	root	1.1	#ifndef UTIL_H
2			#define UTIL_H
3
4	root	1.7	#include <cmath>
5	root	1.1	#include <vector>
6
7	root	1.18	#include <Cg/cg.h>
8			#include <Cg/cgGL.h>
9
10	root	1.1	using namespace std;
11	root	1.18
12			extern CGcontext cgc;
13			extern CGprogram vsh;
14			extern CGprogram fsh;
15	root	1.19	extern CGparameter mv, mvp, lightpos;
16	root	1.1
17	root	1.7	#include <GL/gl.h>
18
19	root	1.3	typedef int soffs; // 32 bit
20			typedef unsigned int uoffs;
21	root	1.4	#define OFFS_BITS 31
22	root	1.9	#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	root	1.1
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	root	1.6
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	root	1.1
56	root	1.16	struct matrix {
57	root	1.5	GLfloat data[4][4];
58
59	root	1.12	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
60			GLfloat &operator ()(int i, int j) { return data[j][i]; };
61	root	1.5
62			void diagonal (GLfloat v);
63			void clear () { diagonal (0.); };
64			void identity () { diagonal (1.); };
65
66			void print (); // ugly
67
68	root	1.16	static const matrix translation (const vec3 &v);
69			static const matrix rotation (GLfloat degrees, const vec3 &axis);
70	root	1.5
71	root	1.16	matrix () { };
72			matrix (GLfloat diag) { diagonal (diag); };
73	root	1.5	};
74
75	root	1.16	const matrix operator *(const matrix &a, const matrix &b);
76			const vec3 operator *(const matrix &a, const vec3 &v);
77	root	1.10
78			typedef vec3 point;
79
80			// a generic plane
81	root	1.12	struct plane {
82	root	1.10	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	root	1.5
125	root	1.1	struct texc {
126			GLfloat s, t;
127			texc () { };
128			texc (GLfloat s, GLfloat t) : s(s), t(t) { };
129			};
130
131			struct box {
132	root	1.8	sector a, b;
133
134			box() { };
135	root	1.1
136			void reset ()
137			{
138	root	1.9	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
139			b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
140	root	1.1	}
141
142			void add (const box &o);
143	root	1.8	void add (const sector &p);
144	root	1.1	void add (const point &p);
145			};
146	root	1.5
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	root	1.1
157			struct light {
158			point p;
159			colour c;
160			GLfloat intensity;
161			GLfloat radius;
162	root	1.2	};
163
164			struct material {
165			colour diffuse, specular, emission;
166			GLfloat shininess;
167	root	1.1	};
168
169	root	1.4	struct entity_base;
170	root	1.20	struct view;
171	root	1.7
172			extern struct timer {
173			static double now;
174			static double diff;
175
176			static void frame ();
177			timer ();
178			} timer;
179	root	1.11
180	root	1.13	/*
181	root	1.11	#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	root	1.13	*/
224	root	1.1
225			#endif
226