Function intersectItem

docs/app/js/sanddance-app.js:124857–124861

(item, box, test)

    return hits;
}
function intersectItem(item, box, test) {
    // test bounds enclosure, bounds intersection, then detailed test
    const bounds21 = item.bounds;
    return box.encloses(bounds21) || box.intersects(bounds21) && test(item, box);
}
const clipBounds = new Bounds();
function boundClip(mark) {
    const clip4 = mark.clip;