Quat Quat::Normalized() const
{
#ifdef MATH_AUTOMATIC_SSE
return Quat(vec4_normalize(q));
#else
Quat copy = *this;
float success = copy.Normalize();
assume(success > 0 && "Quat::Normalized failed!");
MARK_UNUSED(success);
return copy;
#endif
}
/* this function is needed for a serious hack that I really
* hate doing. R.I.P. clean code R.I.P. */
ray_t* ray_tinypush(ray_t *rayout, const ray_t *ray)
{
vector4_t v;
vec4_set(&v, (float *)&ray->direction);
/* make sure direction was normalized */
vec4_normalize(&v);
/* create a tiny displacement vector along direction */
vec4_scale(&v, &v, 0.001f);
/* copy the ray */
ray_copy(rayout, ray);
/* display the new rays origin */
vec4_add(&rayout->origin, &rayout->origin, &v);
return rayout;
}
static int _llfunc_vec4_normalize(lua_State *L) {
vec4 *v = (vec4*)userdata_get_or_die(L, 1);
vec4_normalize(v);
return 0;
}