说明：  本代码实现对一组坐标，经过平移-->旋转-->再旋转，使其整体转换至：第1个指定的坐标位于坐标原点，第2个指定的坐标位于Y轴正方向，第3个指定的坐标位于xy平面第一象限。
(This code to achieve a set of coordinates, after translation -- >;Rotation - & gt;Rotate it so that the whole transformation is: the first specified coordinate is at the origin of the coordinate, the second specified coordinate is in the positive direction of the Y axis, and the third specified coordinate is in the first quadrant of the xy plane.)