Hey,
I worte some scripts which you can use to interpolate function curves. If you want to download them, just do it.
→ http://toonboom.meeoo.de
http://toonboom.meeoo.de/bilder/curve_example_linear.png
http://toonboom.meeoo.de/bilder/curve_example_ease.png
http://toonboom.meeoo.de/bilder/curve_example_spline.png
http://toonboom.meeoo.de/bilder/curve_example_smooth.png
