Hi.
I need to simulate a 3D mechanical device (like a car engine).
I need that some bodies have a constant rotation (gears) and other that keep a piston behavior (go from point A to B and then return to B).
In this case, it´s better to use btActionInterface and change directly the rotation and/or position of the bodies or must I use joints?
If using joints, how to keep the rotation of a body or the piston moviment?
What joints to use in these two cases?
Thanks.
Jose