The midpoint between squares is reached in 90 degrees and the full circle or cycle of 360 degrees moves two full squares from its starting point.
The midpoint between squares is reached in 90 degrees and the full circle or cycle of 360 degrees moves two full squares from its starting point.
移动90度则会碰到两个矩阵之间的中间点，从起始点开始移动两个完整矩阵则会绕完一圈，也就是360度。