It should work if you create a point motion on the curve marker. But you have to think backwards.
The curve marker MUST be the j-marker for the motion, i.e. the one that defines the direction.
So you must have a marker on ground as i-marker and specify the motion as negative.
Or you can create a dummy part attached to ground (or other reference part )with a spherical joint and an orientation j-prim to the curve marker. Then a marker on the dummy part is always oriented the same as the curve marker.
Then you can use this marker on the dummy part as your j-marker for the point motion and a marker on part B as an i-marker.
It should work if you create a point motion on the curve marker. But you have to think backwards.
The curve marker MUST be the j-marker for the motion, i.e. the one that defines the direction.
So you must have a marker on ground as i-marker and specify the motion as negative.
Or you can create a dummy part attached to ground (or other reference part )with a spherical joint and an orientation j-prim to the curve marker. Then a marker on the dummy part is always oriented the same as the curve marker.
Then you can use this marker on the dummy part as your j-marker for the point motion and a marker on part B as an i-marker.
