绘制动态绘制正弦波和余弦波的程序，此程序绘制的正弦波和余弦波分属两个panel，它们会不断地在窗口中向后移动，就像示波器一样-Drawing dynamic sine wave and cosine wave mapping procedures, the procedures of the sine and cosine mapping belong to the two-wave panel, they will continue to move backwards in the windo