public Item(Point center, Size extent, double angle, Selection selection) { //this.center = new Point(0.0, 0.0); //this.extent = new Size(50.0, 50.0); //this.angle = 0.0; stencil = new Tank(); viewbox = new Viewbox(); viewbox.StretchDirection = StretchDirection.Both; viewbox.Stretch = Stretch.Fill; viewbox.MaxWidth = 400.0; viewbox.MaxHeight = 400.0; viewbox.Child = stencil; this.center = center; this.extent = extent; this.angle = angle; Children.Add(viewbox); Update(); }