fix Animate from and to

gistfile1.txt

private void Animate(bool isDown, bool useDelay=true)
        { 
            Storyboard storyboard = new Storyboard();

            storyboard.SpeedRatio = useDelay ? 4 : 100000;

            // translate the children
            int i = 0;
            foreach (Image image in rotationContainer.Children)
            {
                //x translation     
                int fromIndex = (int) image.Tag;
                int toIndex = fromIndex;
                if (isDown)
                {
                    toIndex++;
                    if (toIndex>=itemsAmount)
                    {
                        toIndex = 0;
                    }
                }
                else
                {
                    toIndex--;
                    if (toIndex<0)
                    {
                        toIndex = itemsAmount - 1;
                    }
                }

                image.Tag = toIndex;

                DoubleAnimation translateAnimationX = new DoubleAnimation()
                {
                    From = positions[fromIndex].X,
                    To = positions[toIndex].X
                };
                Storyboard.SetTarget(translateAnimationX, image);
                Storyboard.SetTargetProperty(translateAnimationX, new PropertyPath("(UIElement.RenderTransform).(TranslateTransform.X)"));
                storyboard.Children.Add(translateAnimationX);

                //y translation
                DoubleAnimation translateAnimationY = new DoubleAnimation()
                {
                    From = positions[fromIndex].Y,
                    To = positions[toIndex].Y
                };
                Storyboard.SetTarget(translateAnimationY, image);
                Storyboard.SetTargetProperty(translateAnimationY, new PropertyPath("(UIElement.RenderTransform).(TranslateTransform.Y)"));
                storyboard.Children.Add(translateAnimationY);   
                i++;

                int imageTag = (int)image.Tag;
                if (imageTag>=-1 && imageTag <=visibleItems)
                {
                    image.Visibility = Visibility.Visible;
                }
            }

            storyboard.Completed += ((sen, args) =>
            {
                animationRunning = false;
                foreach (Image image in rotationContainer.Children)
                {
                    int imageTag = (int)image.Tag;
                    if (imageTag < 0 && imageTag>=visibleItems)
                    {
                        image.Visibility = Visibility.Hidden;
                    } 
                }
            });
            storyboard.Begin();
            animationRunning = true;

            if (!isDown) currentIndex++;
            else currentIndex--;

            if (currentIndex >= itemsAmount)
                currentIndex = 0;
            else if (currentIndex==-1)
            {
                currentIndex = itemsAmount - 1;
            }
        }