绘制一个实时曲线图，横坐标是时间，随着时间的增加，曲线整体向左移动，是动态的曲线绘制。左侧的点隐藏，右侧不断增加一些新的点，曲线开始输出100个随机的点，后面平稳输出。-Draw a real-time graph, the abscissa is time, as time increases, the whole curve to the left, is a dynamic curve drawing. The point behind the left and right constan