Available since LÖVE 0.10.2  
 This function is not supported in earlier versions. 
Gets the world-space axis vector of the Wheel Joint.
x, y = WheelJoint:getAxis( )
None.
number xnumber y
    © 2006–2016 LÖVE Development Team
Licensed under the GNU Free Documentation License, Version 1.3.
    https://love2d.org/wiki/WheelJoint:getAxis