wheel data structure

These are run-time wheel data, which can user get by using wheel() function (returns object with these parameters).

property	description
ssteer, csteer	sine/cosine of the steering angle
saxle, caxle	swing-type suspension: sine/cosine of the axle angle linear suspension: caxle contains the height above or below the rest position, saxle is 0
rotation	rotation angle [rad]
rpm	revolutions per minute
contact	true if the wheel has a contact with ground
blocked	true if the wheel isn't spinning
axle_inverted	true if axle rotation is inverted
material	ID of material, on which the wheel is currently located