1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/* dt - misc.h
*
* Copyright (C) 2006 Pedro Felzenszwalb
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* random stuff */
#ifndef MISC_H
#define MISC_H
#include <cmath>
#ifndef M_PI
#define M_PI 3.141592653589793
#endif
typedef unsigned char uchar;
typedef struct { uchar r, g, b; } rgb;
inline bool operator==(const rgb &a, const rgb &b) {
return ((a.r == b.r) && (a.g == b.g) && (a.b == b.b));
}
template <class T>
inline T abs(const T &x) { return (x > 0 ? x : -x); };
template <class T>
inline int sign(const T &x) { return (x >= 0 ? 1 : -1); };
template <class T>
inline T square(const T &x) { return x*x; };
template <class T>
inline T bound(const T &x, const T &min, const T &max) {
return (x < min ? min : (x > max ? max : x));
}
template <class T>
inline bool check_bound(const T &x, const T&min, const T &max) {
return ((x < min) || (x > max));
}
inline int vlib_round(float x) { return (int)(x + 0.5F); }
inline int vlib_round(double x) { return (int)(x + 0.5); }
inline double gaussian(double val, double sigma) {
return exp(-square(val/sigma)/2)/(sqrt(2*M_PI)*sigma);
}
#endif
|
