public ShapeNode(SpanFactory <ShapeNode> spanFactory, FeatureStruct fs)
{
_spanFactory = spanFactory;
_ann = new Annotation <ShapeNode>(spanFactory.Create(this), fs);
Tag = int.MinValue;
}
public Shape(SpanFactory <ShapeNode> spanFactory, Func <bool, ShapeNode> marginSelector)
: this(spanFactory, marginSelector, new AnnotationList <ShapeNode>(spanFactory))
{
}