在窗口中画一个旋转的风车，风车中有三个叶片，颜色分别为红黄和蓝，叶片外侧有一个外接圆。单击鼠标左键风车以某一速度逆时针旋转；单击鼠标右键，风车以另一速度旋转。-Painting in the window of a rotating windmill, windmill, three blades, colors were red, yellow and blue, leaves the outside of a circumscribed circle. Click the left mous