public IntPtr SetupInitialProperties()
{
wheelCentre = Vector3.up * -suspensionDistance * suspensionSpringTargetPosition;
wheel = PhysXLib.CreateWheelData();
PhysXLib.SetWheelMass(wheel, mass);
PhysXLib.SetWheelRadius(wheel, radius);
PhysXLib.SetWheelDampingRate(wheel, dampingRate);
PhysXLib.SetWheelMomentOfInertia(wheel, 0.5f * mass * radius * radius);
PhysXLib.SetWheelWidth(wheel, width);
tire = PhysXLib.CreateTireData();
PhysXLib.SetTireBaseFriction(tire, baseForwardFriction);
PhysXLib.SetTireMaxFrictionSlipPoint(tire, extremumForwardSlip);
PhysXLib.SetTireMaxFriction(tire, extremumForwardFriction);
PhysXLib.SetTirePlateuxSlipPoint(tire, asymptoteForwardSlip);
PhysXLib.SetTirePlateuxFriction(tire, asymptoteForwardFriction);
PhysXLib.SetTireLongitudinalStiffnessScale(tire, forwardStiffness);
PhysXLib.SetTireLateralStiffnessMaxLoad(tire, asymptoteSidewaysTireLoad);
PhysXLib.SetTireMaxLateralStiffness(tire, _asymptoteSidewaysStiffness);
suspension = PhysXLib.CreateSuspensionData();
PhysXLib.SetSuspensionMaxCompression(suspension, suspensionDistance * suspensionSpringTargetPosition);
PhysXLib.SetSuspensionMaxDroop(suspension, suspensionDistance * (1 - suspensionSpringTargetPosition));
PhysXLib.SetSuspensionSpringStrength(suspension, suspensionSpringStrength);
PhysXLib.SetSuspensionSpringDamper(suspension, suspensionSpringDamper);
return(suspension);
}