如何使用鼠标滚轮滚动圆圈？

I have one circle and I have to rotate 360 deg using mouse scroll wheel or arrow but it will start when circle touches the blue border. Now my code is working when I scroll it and touch the blue border. But I have to scroll the circle using the mouse wheel. I mean using mouse wheel I have to rotate the circle also reverse.I have one circle and I have to rotate 360 deg