@brief Get the Piston angular position (i.e. the twist between the 2 bodies)
When the axis is set, the current position of the attached bodies is examined and that position will be the zero position. @ingroup joints
See Implementation
@brief Get the Piston angular position (i.e. the twist between the 2 bodies)
When the axis is set, the current position of the attached bodies is examined and that position will be the zero position. @ingroup joints