五角形线  t=1 xt=2+(10-6)*cos(360*4*t)+10*cos((10/6-1)*(360*4*t)) yt=2+(10-6)*sin(360*4*t)-6*sin((10/6-1)*(360*4*t))  t=1 xt=2+(10-6)*cos(360*4*t)+10*cos((10/6-1)*(360*4*t)) yt=2+(10-6)*sin(360*4*t)-10*sin((10/6-1)*(360*4*t))  t=1 xt=2+(10-2)*cos(360*4*t)+10*cos((10/6-1)*(360*4*t)) yt=2+(10-2)*sin(360*4*t)-10*sin((10/6-1)*(360*4*t))  t=1 xt=0.5+(10-6)*cos(360*5*t)+10*cos((6/10-1)*(360*5*t)) yt=0.5+(10-6)*sin(360*5*t)-10*sin((6/10-1)*(360*5*t)) |
