作業五 : 蝴蝶紙雕燈罩

size 200 200
paper 100

forever
{
//righrup
repeat x 200 0
{
pen 75 (*20)
line 150 150 100 x
line 150 150 100 x
line 150 150 x 100
line 150 150 x 100
}

//leftdown
repeat x 200 0
{
pen 20 (*20)
line 50 50 100 x
line 50 50 100 x
line 50 50 x 100
line 50 50 x 100
}
//rightdown
repeat x 200 0
{
pen 50 (*20)
line 150 50 100 x
line 150 50 100 x
line 150 50 x 100
line 150 50 x 100
}

repeat x 200 0
{
pen 100 (*20)
line 50 150 100 x
line 50 150 100 x
line 50 150 x 100
line 50 150 x 100
}
}