/usr/include/obs/graphics/plane.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 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | /******************************************************************************
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 "math-defs.h"
#include "vec3.h"
#ifdef __cplusplus
extern "C" {
#endif
struct matrix3;
struct matrix4;
struct plane {
struct vec3 dir;
float dist;
};
static inline void plane_copy(struct plane *dst, const struct plane *p)
{
vec3_copy(&dst->dir, &p->dir);
dst->dist = p->dist;
}
static inline void plane_set(struct plane *dst, const struct vec3 *dir,
float dist)
{
vec3_copy(&dst->dir, dir);
dst->dist = dist;
}
static inline void plane_setf(struct plane *dst, float a, float b, float c,
float d)
{
vec3_set(&dst->dir, a, b, c);
dst->dist = d;
}
EXPORT void plane_from_tri(struct plane *dst,
const struct vec3 *v1,
const struct vec3 *v2,
const struct vec3 *v3);
EXPORT void plane_transform(struct plane *dst, const struct plane *p,
const struct matrix4 *m);
EXPORT void plane_transform3x4(struct plane *dst, const struct plane *p,
const struct matrix3 *m);
EXPORT bool plane_intersection_ray(const struct plane *p,
const struct vec3 *orig, const struct vec3 *dir, float *t);
EXPORT bool plane_intersection_line(const struct plane *p,
const struct vec3 *v1, const struct vec3 *v2, float *t);
EXPORT bool plane_tri_inside(const struct plane *p,
const struct vec3 *v1,
const struct vec3 *v2,
const struct vec3 *v3,
float precision);
EXPORT bool plane_line_inside(const struct plane *p, const struct vec3 *v1,
const struct vec3 *v2, float precision);
static inline bool plane_close(const struct plane *p1, const struct plane *p2,
float precision)
{
return vec3_close(&p1->dir, &p2->dir, precision) &&
close_float(p1->dist, p2->dist, precision);
}
static inline bool plane_coplanar(const struct plane *p1,
const struct plane *p2, float precision)
{
float cos_angle = vec3_dot(&p1->dir, &p2->dir);
if (close_float(cos_angle, 1.0f, precision))
return close_float(p1->dist, p2->dist, precision);
else if (close_float(cos_angle, -1.0f, precision))
return close_float(-p1->dist, p2->dist, precision);
return false;
}
#ifdef __cplusplus
}
#endif
|