Line data Source code
1 : /* Copyright (C) 2022 Wildfire Games.
2 : * This file is part of 0 A.D.
3 : *
4 : * 0 A.D. is free software: you can redistribute it and/or modify
5 : * it under the terms of the GNU General Public License as published by
6 : * the Free Software Foundation, either version 2 of the License, or
7 : * (at your option) any later version.
8 : *
9 : * 0 A.D. is distributed in the hope that it will be useful,
10 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 : * GNU General Public License for more details.
13 : *
14 : * You should have received a copy of the GNU General Public License
15 : * along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
16 : */
17 :
18 : #ifndef INCLUDED_MATHUTIL
19 : #define INCLUDED_MATHUTIL
20 :
21 : #define DEGTORAD(a) ((a) * ((float)M_PI/180.0f))
22 : #define RADTODEG(a) ((a) * (180.0f/(float)M_PI))
23 : #define SQR(x) ((x) * (x))
24 :
25 : template<typename T>
26 83 : inline T Interpolate(const T& a, const T& b, float t)
27 : {
28 83 : return a + (b - a) * t;
29 : }
30 :
31 : template<typename T>
32 14368738 : inline T Clamp(T value, T min, T max)
33 : {
34 14368738 : if (value <= min)
35 666831 : return min;
36 13701907 : else if (value >= max)
37 500990 : return max;
38 13200917 : return value;
39 : }
40 :
41 : template<typename T>
42 0 : inline T SmoothStep(T edge0, T edge1, T value)
43 : {
44 0 : value = Clamp<T>((value - edge0) / (edge1 - edge0), 0, 1);
45 0 : return value * value * (3 - 2 * value);
46 : }
47 :
48 : template<typename T>
49 0 : inline T Sign(const T value)
50 : {
51 0 : if (value > T(0))
52 0 : return T(1);
53 0 : if (value < T(0))
54 0 : return T(-1);
55 0 : return T(0);
56 : }
57 :
58 : #endif // INCLUDED_MATHUTIL
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