(補)課堂練習

size 400 400
paper 10 10 10
//fast
repeat x 30 300
{
pen 50 80 10
line 100 200 x 400
}

repeat x 100 400
{
pen 20 10 50
line 90 200 x 0
}
repeat x 0 400
{
pen 60 10 90
line 90 x x 100
}
repeat x 400 0
{
pen 60 70 50
line x x x 200
}
repeat x 200 60
{
pen 80 20 50
line x x x 200
}
repeat x 50 100
{
pen 20 40 20
line 190 x x 260
}
repeat x 100 400
{
pen 60 50 90
line 50 50 x 0
}
repeat x 100 50
{
pen 40 10 90
line x x x 60
}