public PolygonElement AddPolygone(int width, Color color, IEnumerable<Vector> vertices)
{
var polygonElement = new PolygonElement(vertices, width, color);
this.elements.Add(polygonElement);
return polygonElement;
}
private static XElement ToXml(PolygonElement polygonElement)
{
return new XElement("PolygonElement",
new XAttribute("width", polygonElement.Width),
new XAttribute("color", polygonElement.Color),
new XElement("Vertices", string.Join(", ", polygonElement.Vertices)));
}