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rotate vec3 with affine matrix

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Recep Aslantas
2017-01-17 01:07:52 +03:00
parent 170e2e9fcc
commit e94f1e4880
1 changed files with 15 additions and 0 deletions
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15
include/cglm-vec.h
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@@ -418,4 +418,19 @@ glm_vec_rotate(vec3 v, float angle, vec3 axis) {
glm_vec_add(v1, v3, v); glm_vec_add(v1, v3, v);
} }
/*!
* @brief apply rotation matrix to vector
*
* @param[in] m affine matrix or rot matrix
* @param[in] v vector
* @param[out] dest rotated vector
*/
CGLM_INLINE
void
glm_vec_rotate_m4(mat4 m, vec3 v, vec3 dest) {
dest[0] = m[0][0] * v[0] + m[1][0] * v[1] + m[2][0] * v[2];
dest[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2];
dest[2] = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2];
}
#endif /* cglm_vec_h */ #endif /* cglm_vec_h */