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。
(In this code, a group of coordinates are translated, rotated, and then rotated so that they are converted as a whole to: the first specified coordinate is located at the coordinate origin, the second specified coordinate is located in the positive direction of the Y axis, and the third specified coordinate is located in the first quadrant of the XY plane.)