libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <GL/gl.h>

#include <vector>

using namespace std;

typedef unsigned int soffs; // 32 bit
#define SOFFS_MAXEXTENT (soffs)(1UL << 31)

#define GLFLOAT_MAX 1e30
#define GLFLOAT_MIN -1e30

struct sector {
  soffs x, y, z;
};

struct point {
  GLfloat x, y, z;

  point () { };
  point (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
};

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 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);
GLfloat dot (const vec3 &a, const vec3 &b);

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

struct box {
  point a, b;

  void reset ()
  {
    a = point (GLFLOAT_MAX, GLFLOAT_MAX, GLFLOAT_MAX);
    b = point (GLFLOAT_MIN, GLFLOAT_MIN, GLFLOAT_MIN);
  }

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

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

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

struct draw_context {
  enum { DEPTH, LIGHTED } mode;
  light *l;
};

#endif

Revision:	1.2
Committed:	Sun Oct 3 03:17:09 2004 UTC (21 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+7 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#ifndef UTIL_H
2			#define UTIL_H
3
4			#include <GL/gl.h>
5
6			#include <vector>
7
8			using namespace std;
9
10			typedef unsigned int soffs; // 32 bit
11			#define SOFFS_MAXEXTENT (soffs)(1UL << 31)
12
13			#define GLFLOAT_MAX 1e30
14			#define GLFLOAT_MIN -1e30
15
16			struct sector {
17			soffs x, y, z;
18			};
19
20			struct point {
21			GLfloat x, y, z;
22
23			point () { };
24			point (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
25			};
26
27			struct colour {
28	root	1.2	GLfloat r, g, b, a;
29			colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
30	root	1.1	};
31
32			struct vec3 {
33			GLfloat x, y, z;
34			vec3 () { };
35			vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
36
37			const vec3 operator -() const
38			{ return vec3 (-x, -y, -z); }
39			};
40
41			const vec3 normalize (const vec3 &v);
42			const vec3 cross (const vec3 &a, const vec3 &b);
43			GLfloat dot (const vec3 &a, const vec3 &b);
44
45			struct texc {
46			GLfloat s, t;
47			texc () { };
48			texc (GLfloat s, GLfloat t) : s(s), t(t) { };
49			};
50
51			struct box {
52			point a, b;
53
54			void reset ()
55			{
56			a = point (GLFLOAT_MAX, GLFLOAT_MAX, GLFLOAT_MAX);
57			b = point (GLFLOAT_MIN, GLFLOAT_MIN, GLFLOAT_MIN);
58			}
59
60			void add (const box &o);
61			void add (const point &p);
62			};
63
64			struct light {
65			point p;
66			colour c;
67			GLfloat intensity;
68			GLfloat radius;
69	root	1.2	};
70
71			struct material {
72			colour diffuse, specular, emission;
73			GLfloat shininess;
74	root	1.1	};
75
76			struct draw_context {
77			enum { DEPTH, LIGHTED } mode;
78			light *l;
79			};
80
81			#endif
82