mirror of
https://github.com/obsproject/obs-studio.git
synced 2024-07-07 03:53:38 +00:00
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/******************************************************************************
|
|
Copyright (C) 2023 by Lain Bailey <lain@obsproject.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/>.
|
|
******************************************************************************/
|
|
|
|
#include "vec4.h"
|
|
#include "vec3.h"
|
|
#include "matrix4.h"
|
|
|
|
void vec4_from_vec3(struct vec4 *dst, const struct vec3 *v)
|
|
{
|
|
dst->m = v->m;
|
|
dst->w = 1.0f;
|
|
}
|
|
|
|
void vec4_transform(struct vec4 *dst, const struct vec4 *v,
|
|
const struct matrix4 *m)
|
|
{
|
|
struct vec4 temp;
|
|
struct matrix4 transpose;
|
|
|
|
matrix4_transpose(&transpose, m);
|
|
|
|
temp.x = vec4_dot(&transpose.x, v);
|
|
temp.y = vec4_dot(&transpose.y, v);
|
|
temp.z = vec4_dot(&transpose.z, v);
|
|
temp.w = vec4_dot(&transpose.t, v);
|
|
|
|
vec4_copy(dst, &temp);
|
|
}
|