public void TurnToFront(uint Delay)
{
Timeline = new Timeline (180);
Timeline.Delay = Delay;
Timeline.NewFrame += delegate (object o, NewFrameArgs args) {
SetRotation(RotateAxis.Y, args.FrameNum, 0, 0, 0);
if (args.FrameNum > 90)
FrontSide ();
};
Timeline.Start ();
}