private void SplitWallClick(object sender, RoutedEventArgs e)
{
int splitPercentage = int.Parse("50");
//model.SplitEdge(splitPercentage, model.GetRandomLine());
s.Split(splitPercentage, LineGrid.SelectedItem as MyLine);
//int index = LineGrid.SelectedIndex;
//model.SplitEdge(splitPercentage, LineGrid.SelectedItem as MyLine);
//Paint();
}