>正規化¶
> Normalizing a vector means reducing its length to 1 while preserving its direction. This is done by dividing each of its components by its magnitude. Because this is such a common operation, Vector2 and Vector3 provide a method for normalizing:
a = a.normalized() >正規化はベクトルの長さで割り算するので、長さ 0 のベクトルは正規化できません。エラーになります。