public static Ellipse AddEllipse(this Canvas canvas, double x, double y, double width, double height, ShapeStyle shapeStyle)
{
Ellipse ellipse = new Ellipse
{
Width = width,
Height = height
};
ellipse.UpdateShape(shapeStyle);
Canvas.SetLeft(ellipse, x);
Canvas.SetTop(ellipse, y);
canvas.Children.Add(ellipse);
return ellipse;
}
