this is a demo of a simple python effector for mograph module (maxon cinema 4d)
can be used to roll/unroll mosplines, though not all its features are perfect - it rolls to slightly uneven spiral for now
here is the project file:
dl.dropboxusercontent.com/u/28585409/mospline_unroll.c4d

j vimeo.com/69878651

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…