query method
Implementation
void query(double queryMin, double queryMax, ItemVisitor visitor) {
if (!intersects(queryMin, queryMax)) {
// System.out.println("Does NOT Overlap branch: " + this);
return;
}
// System.out.println("Overlaps branch: " + this);
if (node1 != null) node1.query(queryMin, queryMax, visitor);
if (node2 != null) node2.query(queryMin, queryMax, visitor);
}