旋转图像。动画列表还是动画旋转？ （机器人）

I want to create a rotating progress image, and wonder what's the best way to proceed. I can make it work with an animation list with for example 12 images changing every 100ms. This works fine, but it's quite tedious to create 12 images or for every size and resolution:I want to create a rotating progress image, and