cvsroot/libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <cmath>
#include <vector>
#include <list>
#include <map>
#include "callback.h"

using namespace std;

#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 gl_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 gl_matrix translation (const vec3 &v);
  static const gl_matrix rotation (GLfloat degrees, const vec3 &axis);

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

const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
const vec3 operator *(const gl_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:	1.12
Committed:	Mon Oct 4 23:44:54 2004 UTC (22 years ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+5 -6 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	root	1.11	#include <list>
7			#include <map>
8			#include "callback.h"
9	root	1.1
10			using namespace std;
11
12	root	1.7	#include <GL/gl.h>
13
14	root	1.3	typedef int soffs; // 32 bit
15			typedef unsigned int uoffs;
16	root	1.4	#define OFFS_BITS 31
17	root	1.9	#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
18			#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
19			#define MAXEXTENT (1UL << (OFFS_BITS - 1))
20	root	1.1
21			#define GLFLOAT_MAX 1e30
22			#define GLFLOAT_MIN -1e30
23
24			struct vec3 {
25			GLfloat x, y, z;
26			vec3 () { };
27			vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
28
29			const vec3 operator -() const
30			{ return vec3 (-x, -y, -z); }
31			};
32
33			const vec3 normalize (const vec3 &v);
34			const vec3 cross (const vec3 &a, const vec3 &b);
35	root	1.6
36			inline const vec3 operator *(const vec3 &a, GLfloat s)
37			{
38			return vec3 (a.x * s, a.y * s, a.z * s);
39			}
40
41			inline GLfloat dot (const vec3 &a, const vec3 &b)
42			{
43			return a.x * b.x + a.y * b.y + a.z * b.z;
44			}
45
46			inline const GLfloat abs (const vec3 &v)
47			{
48			return sqrtf (dot (v, v));
49			}
50	root	1.1
51	root	1.5	struct gl_matrix {
52			GLfloat data[4][4];
53
54	root	1.12	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
55			GLfloat &operator ()(int i, int j) { return data[j][i]; };
56	root	1.5
57			void diagonal (GLfloat v);
58			void clear () { diagonal (0.); };
59			void identity () { diagonal (1.); };
60
61			void print (); // ugly
62
63	root	1.12	static const gl_matrix translation (const vec3 &v);
64			static const gl_matrix rotation (GLfloat degrees, const vec3 &axis);
65	root	1.5
66			gl_matrix () { };
67			gl_matrix (GLfloat diag) { diagonal (diag); };
68			};
69
70			const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
71	root	1.6	const vec3 operator *(const gl_matrix &a, const vec3 &v);
72	root	1.10
73			typedef vec3 point;
74
75			// a generic plane
76	root	1.12	struct plane {
77	root	1.10	vec3 n;
78			GLfloat d;
79
80			GLfloat distance (const point &p) const
81			{
82			return dot (n, p) + d;
83			}
84
85			plane () { };
86			plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
87			};
88
89			struct sector {
90			soffs x, y, z;
91
92			sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };
93
94			void offset (int subindex, uoffs extent)
95			{
96			if (subindex & 1) x += extent;
97			if (subindex & 2) y += extent;
98			if (subindex & 4) z += extent;
99			}
100			};
101
102			inline const sector translate (const sector &p, const sector &src, const sector &dst)
103			{
104			sector r;
105
106			r.x = p.x + (dst.x - src.x);
107			r.y = p.y + (dst.y - src.y);
108			r.z = p.z + (dst.z - src.z);
109
110			return r;
111			}
112
113			void renormalize (sector &s, point &p);
114
115			struct colour {
116			GLfloat r, g, b, a;
117			colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
118			};
119	root	1.5
120	root	1.1	struct texc {
121			GLfloat s, t;
122			texc () { };
123			texc (GLfloat s, GLfloat t) : s(s), t(t) { };
124			};
125
126			struct box {
127	root	1.8	sector a, b;
128
129			box() { };
130	root	1.1
131			void reset ()
132			{
133	root	1.9	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
134			b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
135	root	1.1	}
136
137			void add (const box &o);
138	root	1.8	void add (const sector &p);
139	root	1.1	void add (const point &p);
140			};
141	root	1.5
142			inline const box translate (const box &b, const sector &src, const sector &dst)
143			{
144			box r;
145
146			r.a = translate (b.a, src, dst);
147			r.b = translate (b.b, src, dst);
148
149			return r;
150			}
151	root	1.1
152			struct light {
153			point p;
154			colour c;
155			GLfloat intensity;
156			GLfloat radius;
157	root	1.2	};
158
159			struct material {
160			colour diffuse, specular, emission;
161			GLfloat shininess;
162	root	1.1	};
163
164	root	1.4	struct entity_base;
165			struct draw_context;
166	root	1.7
167			extern struct timer {
168			static double now;
169			static double diff;
170
171			static void frame ();
172			timer ();
173			} timer;
174	root	1.11
175			#define MAX_EVENT_TYPES 10
176			enum event_type { TIMER_EV };
177			struct event {
178			event_type type;
179			};
180
181			typedef callback1<void, event&> event_cb;
182
183			class skedjuhlar {
184
185			public:
186			// only 10 types for now
187			private:
188			vector <list<event_cb> > event_lists;
189
190			public:
191			skedjuhlar () {
192			event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
193			}
194
195			void register_event_cb (const event_type &t, const event_cb &e) {
196			event_lists[t].push_back (e);
197			};
198			void send_event (event &e) {
199			list<event_cb> &l = event_lists[e.type];
200			for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
201			(*it)(e);
202			}
203			};
204			/*
205			void check_events () {
206			while (!events.empty ()) {
207			event &e = events.pop_front ();
208			list<event_cb> &l = event_lists[e->name];
209			for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
210			(*it)(e);
211			}
212			delete e; // ugly slow? hai hai..... 183G
213			}
214			}
215			*/
216			};
217
218			extern skedjuhlar main_scheduler;
219	root	1.1
220			#endif
221