/// <summary>
/// Core update routine.
/// </summary>
/// <param name="context">The context that holds information about the animation.</param>
protected override void UpdateAnimationOverride(AnimationContext context)
{
if (context == null)
{
return;
}
context.Opacity(0, this.StartOpacity, this.Duration.TimeSpan.TotalSeconds, this.EndOpacity);
base.UpdateAnimationOverride(context);
}