private void BeginArrangeAnimation()
{
BeginAnimation(PercentProperty, null);
foreach (UIElement child in InternalChildren)
{
var currentOffset = GetCurrentOffset(child);
if (!double.IsNaN(currentOffset))
{
SetLastOffset(child, GetCurrentOffset(child));
}
}
var animation = new DoubleAnimation()
{
From = 0,
To = 100,
Duration = AnimationDuration,
EasingFunction = AnimationUtils.CreateEasingFunction(AnimationEase),
};
BeginAnimation(PercentProperty, animation);
}
private void UpdateChildren(bool useAnimation)
{
var targetX = (CurrentIndex - 1) * DesiredSize.Width;
var targetY = (CurrentIndex - 1) * DesiredSize.Height;
var targetPositionOffset = new Rect(targetX, targetY, 0, 0);
if (!IsLoaded || !useAnimation || AnimationDuration.TotalMilliseconds == 0)
{
PositionOffset = targetPositionOffset;
}
else
{
var animation = new RectAnimation()
{
To = targetPositionOffset,
Duration = AnimationDuration,
EasingFunction = AnimationUtils.CreateEasingFunction(AnimationEase),
};
BeginAnimation(PositionOffsetProperty, animation);
}
}