In the image below there's a cuboid that has a shrinkwrap constraint to a distorted cylinder. As I rotate the distorted cylinder in the x-axis, the cuboid moves up and down following the uneven surface of the cylinder.
What I want is to flip this over and have the distored cylinder move up and down as it rotates over the stationary cuboid. That is, I want the same shrinkwrap constraint to move the target instead of the object. Does this make sense? Is there another way to go about it?