Letting users create and edit splines at runtime

[skote]

Hi, thanks for a brilliant plugin! 

I'm creating a game where the users create shapes, hence I need to expose some of the curvy controls to the users at runtime. Just very basic stuff, add and edit control points, and some simple line visualizer. Are there any examples of this being done, that I can use as a base to work from?  

I roughly understand how I would do it, but I want to avoid reinventing wheels if someone has already done something similar. 

Thanks