Getting the true visual bounding box of a WPF element?

Question

For a simplified version of my problem, I would like to calculate the bounding box of a layout-transformed (possibly even render-transformed) shape, so that I can always fit

Answer 1

private Rect GetRectOfObject(FrameworkElement _element)
{
    Rect rectangleBounds = new Rect();
    rectangleBounds = _element.RenderTransform.TransformBounds(new Rect(0, 0, _element.Width, _element.Height));
    return rectangleBounds;
}

Maybe this will help out.