Reduced Slot Joint
The Reduced Slot Joint has one rotational and one translational degree of freedom between the two attached components. Both components of the system are free to rotate about the joint rotational axis and free to translate along the joint translation axis. The reduced slot joint can be thought of as a combination of the prismatic joint and the hinge joint, with different axes for the allowed degrees of freedom. The translational axes and the rotational axis are orthogonal to each other.
The reduced slot joint in 2D is similar to the reduced slot joint in 3D. The only difference is the initial joint rotational axis (erot0), which does not change in 2D and is always the out-of-plane axis (ez).