作業五 : Time-1234 , forever, refresh 的應用

每五秒變換一次顏色!!






size 300 300

paper 50 60 90

paper 20 90 80

forever

{

paper (/1) (/2)

Repeat A 0 200
{
pen 30 50 10
Line (0+A*4) 0 (0+A*4) 300
pen 30 20 80
Line (0+A*4) 0 (0+A*4) 250
pen 10 40 70
Line (0+A*4) 0 (0+A*4) 200
}

}