I'm working on a project that involves drawing curved paths between two objects. Currently, I've been writing some test code to play around with bezier curves and animation. The first test is simply to move the endpoint (Point3) from the origin object (a rectangle) to the destination object (another rectangle), in a straight line. here is the code which sets up the actual line:

```
        connector = new Path();
        connector.Stroke = Brushes.Red;
        connector.StrokeThickness = 3;

        PathGeometry connectorGeometry = new PathGeometry();
        PathFigure connectorPoints = new PathFigure();
        connectorCurve = new BezierSegment();

        connectorPoints.StartPoint = new Point((double)_rect1.GetValue(Canvas.LeftProperty) + _rect1.Width / 2,
            (double)_rect1.GetValue(Canvas.TopProperty) + _rect1.Height / 2);
        connectorCurve.Point1 = connectorPoints.StartPoint;
        connectorCurve.Point2 = connectorPoints.StartPoint;
        connectorCurve.Point3 = connectorPoints.StartPoint;

        connectorPoints.Segments.Add(connectorCurve);
        connectorGeometry.Figures.Add(connectorPoints);
        connector.Data = connectorGeometry;
        MainCanvas.Children.Add(connector);

```

OK, so we now have a line collapsed to a point. Now, lets animate that line, going from \_rect1 to \_rect2 (the two objects at the endpoints):

```
        PointAnimation pointAnim = new PointAnimation();
        pointAnim.From = connectorCurve.Point3;
        pointAnim.To = new Point((double)_rect2.GetValue(Canvas.LeftProperty) + _rect2.Width / 2,
            (double)_rect2.GetValue(Canvas.TopProperty) + _rect2.Height / 2);
        pointAnim.Duration = new Duration(TimeSpan.FromSeconds(5));
        board.Children.Add(pointAnim);

```

Works beautifully. However, when I try to do it with a storyboard, I get nothing. Here's the storyboarded code:

```
        Storyboard board = new Storyboard();
        PointAnimation pointAnim = new PointAnimation();
        pointAnim.From = connectorCurve.Point3;
        pointAnim.To = new Point((double)_rect2.GetValue(Canvas.LeftProperty) + _rect2.Width / 2,
            (double)_rect2.GetValue(Canvas.TopProperty) + _rect2.Height / 2);
        pointAnim.Duration = new Duration(TimeSpan.FromSeconds(5));

        Storyboard.SetTarget(pointAnim, connectorCurve);
        Storyboard.SetTargetProperty(pointAnim, new PropertyPath(BezierSegment.Point3Property));
        board.Children.Add(pointAnim);
        board.Begin();

```

Nothing moves. I'm suspecting there is a problem with what I'm feeding SetTarget or SetTargetProperty, but can't seem to figure it out. Does anyone have experience with animating line / bezier points in WPF?