I'm trying to make a garage door open or close by rolling up or down like they usually do. I know how to make an object follow a path in one direction along a curve using constraints, but I need it to move in both directions. Is there a way to do this?
Also, when I try using the Follow Path constraint with a NURBS Path, the object attached to it only goes about a third of the way along the path and then lifts off and heads out into space. By reducing the number of keyframes, I can get it to follow the path just long enough to roll up like I want it to, but that seems to be a poor way to do this, and it still only allows the object to go in one direction.