/usr/include/obs/graphics/math-extra.h is in libobs-dev 21.0.2+dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /******************************************************************************
Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#pragma once
#include "../util/c99defs.h"
/*
* A few general math functions that I couldn't really decide where to put.
*
* Polar/Cart conversion, torque functions (for smooth movement), percentage,
* random floats.
*/
#ifdef __cplusplus
extern "C" {
#endif
struct vec2;
struct vec3;
EXPORT void polar_to_cart(struct vec3 *dst, const struct vec3 *v);
EXPORT void cart_to_polar(struct vec3 *dst, const struct vec3 *v);
EXPORT void norm_to_polar(struct vec2 *dst, const struct vec3 *norm);
EXPORT void polar_to_norm(struct vec3 *dst, const struct vec2 *polar);
EXPORT float calc_torquef(float val1, float val2, float torque,
float min_adjust, float t);
EXPORT void calc_torque(struct vec3 *dst, const struct vec3 *v1,
const struct vec3 *v2, float torque, float min_adjust,
float t);
static inline float get_percentage(float start, float end, float mid)
{
return (mid-start) / (end-start);
}
static inline float get_percentagei(int start, int end, int mid)
{
return (float)(mid-start) / (float)(end-start);
}
EXPORT float rand_float(int positive_only);
#ifdef __cplusplus
}
#endif
|