How to generate closed curve?

Question

How can I do that? I can generate simple beziers, but how can I generate a closed curve like this:

http://www.youtube.com/watch?feature=endscreen&NR=1&v=hlDYJNEiYvU

Answer 1

Just Google closed bezier curve, there are plenty of useful results, including one that has a code example It's just like a open bezier curve, but for the "next" point on your last point, you use the first point.