Thinks Michael

我偶尔这么做，但这样又需要额外计算旋转的角度或捕捉点，镜像平面等。我创建这个讨论只是单纯的想知道为什么会不同并且改进。
I occasionally do this, but it requires additional calculation of rotation angles or snap points, mirror planes, etc. I created this discussion simply to understand why it is different and to improve it.

祝好。
Best wishes to you.