private static ListBoxItem FindSymmetryPoint(FrameworkElement frameworkElement)
{
PointViewModel dot = ((frameworkElement as ListBoxItem).Content) as PointViewModel;
var listcanvas = VisualTreeHelper.GetParent(frameworkElement as DependencyObject) as Canvas;
var listbox_me = VisualTreeHelper.GetParent(listcanvas) as ListBox;
Teeth me = ViewUtils.FindParent(listbox_me, Type.GetType("Process_Page.ToothTemplate.Teeth")) as Teeth;
var main = ((SmileDesign_Page)(Application.Current.MainWindow.Content)) as SmileDesign_Page;
int idx_me = main.ToothControl.dic[me.Name];
int idx_you = idx_me + (idx_me >= 0 && idx_me < 3 ? +3 : -3);
var parent = me.Parent as Grid;
var myKey = main.ToothControl.dic.FirstOrDefault(p => p.Value == idx_you).Key;
Teeth you = parent.FindName(myKey) as Teeth;
ListBox listBox_you = you.FindName("list") as ListBox;
return((ListBoxItem)(listBox_you.ItemContainerGenerator.ContainerFromIndex(dot.I)));
}
