Joint:getAnchors
Get the anchor points of the joint.
x1, y1, x2, y2 = Joint:getAnchors()
x1 number The x-component of the anchor on Body 1.
y1 number The y-component of the anchor on Body 1.
x2 number The x-component of the anchor on Body 2.
y2 number The y-component of the anchor on Body 2.