obs-studio/libobs/graphics/matrix4.h

67 lines
1.8 KiB
C

/******************************************************************************
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 "vec4.h"
/* 4x4 Matrix */
#ifdef __cplusplus
extern "C" {
#endif
struct matrix3;
struct matrix4 {
struct vec4 x, y, z, t;
};
static inline void matrix4_copy(struct matrix4 *dst, const struct matrix4 *m)
{
dst->x.m = m->x.m;
dst->y.m = m->y.m;
dst->z.m = m->z.m;
dst->t.m = m->t.m;
}
static inline void matrix4_identity(struct matrix4 *dst)
{
vec4_zero(&dst->x);
vec4_zero(&dst->y);
vec4_zero(&dst->z);
vec4_zero(&dst->t);
dst->x.x = 1.0f;
dst->y.y = 1.0f;
dst->z.z = 1.0f;
dst->t.w = 1.0f;
}
EXPORT void matrix4_from_matrix3(struct matrix4 *dst, const struct matrix3 *m);
EXPORT void matrix4_mul(struct matrix4 *dst, const struct matrix4 *m1,
const struct matrix4 *m2);
EXPORT float matrix4_determinant(const struct matrix4 *m);
EXPORT bool matrix4_inv(struct matrix4 *dst, const struct matrix4 *m);
EXPORT void matrix4_transpose(struct matrix4 *dst, const struct matrix4 *m);
#ifdef __cplusplus
}
#endif