Notice: This demo works optimally on a laptop with a reasonably large screen and where you can use your cursor to drag the curves that you draw. It's thus not recommended to access it from a tablet or a smartphone.
A more sophisticated version of this tool was used for a project I did for the artist Marie Raffn, where I should animate text that followed specific curves looking like robes. The result of the project can be found here.
Have fun using the tool!