public override void UpdateGeometry()
{
var myGeometry = Geometry as GeometryGroup;
myGeometry.Children.Clear();
Point[] pathPoints = new []
{
new Point(0, 0),
new Point(Bounds.Width, 0),
new Point(Bounds.Width, Bounds.Height),
new Point(0, Bounds.Height),
new Point(Bounds.Height / 2, Bounds.Height / 2)
};
var pf = ConnectorUtilities.GetPathFigureFromPoints(pathPoints);
pf.IsClosed = true; pf.IsFilled = true;
myGeometry.Children.Add(new PathGeometry(new[] { pf }));
myGeometry.Transform = Rotation;
}
