in 2019/harness/focusManager.js [237:258]
var pickElement_ = function(currElem, dir, fudge) {
var rect = createRect(currElem);
var rectSide = rect.generateSideRect(dir, fudge);
var bestDistanceSquared = INFINITY * INFINITY;
var bestElement = null;
for (var i = 0; i < elements.length; ++i) {
if (elements[i] !== currElem) {
var r = createRect(elements[i]);
if (r.valid() && r.intersectComplete(rectSide)) {
var distanceSquared = r.distanceSquared(rect, dir);
if (!bestElement || distanceSquared < bestDistanceSquared) {
bestElement = elements[i];
bestDistanceSquared = distanceSquared;
}
}
}
}
return bestElement;
};