
HingeJointData is JointData:
    stiffness_around_normal is Real
    stiffness_around_cross is Real
    stiffness_along_main is Real
    stiffness_along_normal is Real
    stiffness_along_cross is Real

    damping_around_normal is Real
    damping_around_cross is Real
    damping_along_main is Real
    damping_along_normal is Real
    damping_along_cross is Real
