>HandleAngle = 358, HandleAxis = (1, 0, 0)
>HandleAngle = 359, HandleAxis = (1, 0, 0)
HandleAxisが右向き

>HandleAngle = 359, HandleAxis = (-1, 0, 0)
>HandleAngle = 358, HandleAxis = (-1, 0, 0)
HandleAxisが左向き

右向き/左向きで軸が入れ替わってるんだよ分かる?