您可以对几条线使用Polyline和PolylineTo，这些函数在绘制复杂曲线最有用了。您使用由几百甚至几千条线组成的极短线段，把它们连在一起就像一条曲线一样。例如，画正弦波就是这样的，sinewave程序显示了如何做到这一点-You can use several lines Polyline and PolylineTo, rendering the complexity of these functions at the curve of the most useful. You use by the hundreds or even thousands of lines consisting of very short paragraphs, put them together just like a curve. For example, the draw is the sine, sinewave procedure shows how to do this