// All nodes have an empty tags list.
tags = new ArrayList<Tag>();
polygonFile = new File(getClass().getResource("testPolygon.txt").getFile());
entityInspector = new SinkEntityInspector();
// polyAreaFilter has a notch out of the Northeast corner.
polyAreaFilter = new PolygonFilter(IdTrackerType.Dynamic, polygonFile, false, false, false, false);
polyAreaFilter.setSink(entityInspector);
intersectingBound = new Bound(30, 0, 30, 0, "intersecting");
crossingIntersectingBound = new Bound(-10, 10, 30, -30, "crossing intersecting");