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 |
GLfloat r, g, b; |
29 |
colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1.) : r(r), g(g), b(b) { }; |
30 |
}; |
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 |
}; |
70 |
|
71 |
struct draw_context { |
72 |
enum { DEPTH, LIGHTED } mode; |
73 |
light *l; |
74 |
}; |
75 |
|
76 |
#endif |
77 |
|