public void Spin()
{
Front.InvalidateVisual();
Back.InvalidateVisual();
//DoubleAnimation rotationAnimation = new DoubleAnimation(FrontVisible ? 0 : 180, new Duration(TimeSpan.FromSeconds(SpinTime)));
DoubleAnimation rotationAnimation = new DoubleAnimation(rotation.Angle - 180, new Duration(TimeSpan.FromSeconds(SpinTime)));
rotationAnimation.Completed += new EventHandler(rotationAnimation_Completed);
rotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, rotationAnimation);
//DoubleAnimationUsingKeyFrames translationAnimation = new DoubleAnimationUsingKeyFrames();
//translationAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(-0.5, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(SpinTime / 2.0)), new SineEase()));
//translationAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(0, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(SpinTime)), new SineEase { EasingMode = EasingMode.EaseIn }));
//translation.BeginAnimation(TranslateTransform3D.OffsetZProperty, translationAnimation);
}