private Geometry CreateCloseGeometry(Rect rect)
{
GeometryGroup geometryGroup = new GeometryGroup();
LineGeometry lineGeometry1 = new LineGeometry();
LineGeometry lineGeometry2 = new LineGeometry();
lineGeometry1.StartPoint = rect.Location;
lineGeometry1.EndPoint = new Point(rect.X + rect.Width, rect.Y + rect.Height);
lineGeometry2.StartPoint = new Point(rect.X, rect.Y + rect.Height);
lineGeometry2.EndPoint = new Point(rect.X + rect.Width, rect.Y);
geometryGroup.FillRule = FillRule.Nonzero;
geometryGroup.Children.Add(lineGeometry1);
geometryGroup.Children.Add(lineGeometry2);
return geometryGroup;
}