int targeti = targetx + indent;
int miny = Math.min(thisy, targety) - ANCHOR_EXT;
int maxb = Math.max(thisb, targetb) + ANCHOR_EXT;
if (Math.abs(tm - sm) < THRESHOLD_DISTANCE) {
List<Quartet> list = new ArrayList<Quartet>();
Quartet trio = new Quartet(tm, 2 * tm - sp.x - todrop.getWidth(), miny, maxb, new VerticalCenterAnchor(target));
list.add(trio);
return list;
} else if (Math.abs(dx - targetx) < THRESHOLD_DISTANCE) {
List<Quartet> list = new ArrayList<Quartet>();
Quartet trio = new Quartet(targetx, targetx, miny, maxb, new VerticalLeftAlignAnchor(target));