improve rotate vec3 with affine matrix
because v and dest may be same vector
@@ -428,9 +428,11 @@ glm_vec_rotate(vec3 v, float angle, vec3 axis) {
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];
+ vec3 res;
+ res[0] = m[0][0] * v[0] + m[1][0] * v[1] + m[2][0] * v[2];
+ res[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2];
+ res[2] = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2];
+ glm_vec_dup(res, dest);
}
#endif /* cglm_vec_h */
