libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <cmath>
#include <vector>

using namespace std;

#include <GL/gl.h>

#include <sh/sh.hpp>

using namespace SH;

extern ShColor3f color;
extern ShPoint3f lightPos;
extern ShMatrix4x4f mvp, mv;
extern ShProgram vsh, fsh;

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:	1.14
Committed:	Tue Oct 5 02:42:12 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.13:	+9 -0 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			using namespace std;
8
9	root	1.7	#include <GL/gl.h>
10
11	root	1.14	#include <sh/sh.hpp>
12
13			using namespace SH;
14
15			extern ShColor3f color;
16			extern ShPoint3f lightPos;
17			extern ShMatrix4x4f mvp, mv;
18			extern ShProgram vsh, fsh;
19
20	root	1.3	typedef int soffs; // 32 bit
21			typedef unsigned int uoffs;
22	root	1.4	#define OFFS_BITS 31
23	root	1.9	#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	root	1.1
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	root	1.6
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	root	1.1
57	root	1.5	struct gl_matrix {
58			GLfloat data[4][4];
59
60	root	1.12	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
61			GLfloat &operator ()(int i, int j) { return data[j][i]; };
62	root	1.5
63			void diagonal (GLfloat v);
64			void clear () { diagonal (0.); };
65			void identity () { diagonal (1.); };
66
67			void print (); // ugly
68
69	root	1.12	static const gl_matrix translation (const vec3 &v);
70			static const gl_matrix rotation (GLfloat degrees, const vec3 &axis);
71	root	1.5
72			gl_matrix () { };
73			gl_matrix (GLfloat diag) { diagonal (diag); };
74			};
75
76			const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
77	root	1.6	const vec3 operator *(const gl_matrix &a, const vec3 &v);
78	root	1.10
79			typedef vec3 point;
80
81			// a generic plane
82	root	1.12	struct plane {
83	root	1.10	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	root	1.5
126	root	1.1	struct texc {
127			GLfloat s, t;
128			texc () { };
129			texc (GLfloat s, GLfloat t) : s(s), t(t) { };
130			};
131
132			struct box {
133	root	1.8	sector a, b;
134
135			box() { };
136	root	1.1
137			void reset ()
138			{
139	root	1.9	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
140			b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
141	root	1.1	}
142
143			void add (const box &o);
144	root	1.8	void add (const sector &p);
145	root	1.1	void add (const point &p);
146			};
147	root	1.5
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	root	1.1
158			struct light {
159			point p;
160			colour c;
161			GLfloat intensity;
162			GLfloat radius;
163	root	1.2	};
164
165			struct material {
166			colour diffuse, specular, emission;
167			GLfloat shininess;
168	root	1.1	};
169
170	root	1.4	struct entity_base;
171			struct draw_context;
172	root	1.7
173			extern struct timer {
174			static double now;
175			static double diff;
176
177			static void frame ();
178			timer ();
179			} timer;
180	root	1.11
181	root	1.13	/*
182	root	1.11	#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	root	1.13	*/
225	root	1.1
226			#endif
227