题目:编写一个应用程序，在屏幕上出现一个圆心沿正弦曲线轨迹移动的实心圆，要求每隔1/4周期，圆的填充色与圆的边线都发生变化，颜色自己选取，同时，圆的半径在1/4周期之内由正弦幅值的0.2到0.6倍增长。-Topic: write an application that appear on the screen a circle sine curve track along the solid round, ask every quarter cycle, round and round line

cad制图，方便制图，可以在一个图形范围内，简易控制图形输入 - Function C:GPath is the main program function and defines the AutoCAD GPATH command. (defun C:GPath () Ask the user for input: first for path location and direction, then for path parameters. C

ASK调制模型,提倡共享,谢谢大家支持,可以的 很好用的-ASK modulation model, advocate sharing, thank you for your support, can be very useful