Thanks for the reply, actually current implementation works well with After Effects, and the order of curves if there is many, is maintained.
Cool as coolness.

http://www.sciencedirect.com/science/article/pii/0167839689900186

Man, that's heavy.

Rational splines are like the "sausage" of the design world. Tastes great, but you don't want to know how it's made. ;-)

Links works now :)