/// <summary>
/// Get all data items with rectangles intersecting the specified rectangular region
/// </summary>
/// <param name="queryRegion"></param>
/// <returns></returns>
public IEnumerable <TData> GetAllIntersecting(Interval queryRegion)
{
return(rootNode == null || Count == 0 ? new TData[0] : rootNode.GetNodeItemsIntersectingInterval(queryRegion));
}
