问题：在连续旋转一个角度的时候，图像一直会被压缩变小。
- Problem: The image is compressed and reduced all the time when it is rotated continuously by an Angle.
原因：由于我每次操作的图像是上一次旋转后的结果后，矩阵运算后，会有一定的误差。修改为每次只操作原图。
- Reason: Since the image I operate each time is the result of the last rotation, there will be a certain error after the matrix operation.Modify to operate only on the original image at a time.
I hope I can help you,If you have any questions, please comment on this blog or send me a private message. I will reply in my free time.