| costmap_queue::CellData | Storage for cell information used during queue expansion |
| costmap_queue::CostmapQueue | A tool for finding the cells closest to some set of originating cells |
| costmap_queue::LimitedCostmapQueue | Extension of Costmap Queue where distances are limited to a given distance from source cells |
| costmap_queue::MapBasedQueue< item_t > | Templatized interface for a priority queue |