public unsafe static extern void GetDrive(IntPtr /*PhysXD6Joint*/ joint, PhysXD6Drive index, out float spring, out float damping, out float forceLimit, [MarshalAs(UnmanagedType.U1)] out bool acceleration);
public static unsafe extern void SetDrive( IntPtr/*PhysXD6Joint*/ joint, PhysXD6Drive index, float spring, float damping, float forceLimit, [MarshalAs( UnmanagedType.U1 )] bool acceleration );