Implements a vector tileserver so you can see what's going on inside

OSRM.

include/engine/datafacade/datafacade_base.hpp

@@ -76,6 +76,9 @@ template <class EdgeDataT> class BaseDataFacade
 
     virtual extractor::TravelMode GetTravelModeForEdgeID(const unsigned id) const = 0;
 
+    virtual std::vector<RTreeLeaf> GetEdgesInBox(const util::FixedPointCoordinate & south_west,
+                                                 const util::FixedPointCoordinate & north_east) = 0;
+
     virtual std::vector<PhantomNodeWithDistance>
     NearestPhantomNodesInRange(const util::FixedPointCoordinate input_coordinate,
                                const float max_distance,

include/engine/datafacade/internal_datafacade.hpp

@@ -15,6 +15,7 @@
 #include "util/range_table.hpp"
 #include "util/graph_loader.hpp"
 #include "util/simple_logger.hpp"
+#include "util/rectangle.hpp"
 
 #include "osrm/coordinate.hpp"
 
@@ -357,6 +358,20 @@ template <class EdgeDataT> class InternalDataFacade final : public BaseDataFacad
         return m_travel_mode_list.at(id);
     }
 
+    std::vector<RTreeLeaf> GetEdgesInBox(const util::FixedPointCoordinate & south_west,
+                                         const util::FixedPointCoordinate & north_east)
+        override final
+    {
+        if (!m_static_rtree.get())
+        {
+            LoadRTree();
+            BOOST_ASSERT(m_geospatial_query.get());
+        }
+        util::RectangleInt2D bbox = {south_west.lon, north_east.lon,
+                                     south_west.lat, north_east.lat};
+        return m_geospatial_query->Search(bbox);
+    }
+
     std::vector<PhantomNodeWithDistance>
     NearestPhantomNodesInRange(const util::FixedPointCoordinate input_coordinate,
                                const float max_distance,

include/engine/datafacade/shared_datafacade.hpp

@@ -13,6 +13,7 @@
 #include "util/static_rtree.hpp"
 #include "util/make_unique.hpp"
 #include "util/simple_logger.hpp"
+#include "util/rectangle.hpp"
 
 #include <cstddef>
 
@@ -407,6 +408,20 @@ template <class EdgeDataT> class SharedDataFacade final : public BaseDataFacade<
         return m_travel_mode_list.at(id);
     }
 
+    std::vector<RTreeLeaf> GetEdgesInBox(const util::FixedPointCoordinate & south_west,
+                                         const util::FixedPointCoordinate & north_east)
+        override final
+    {
+        if (!m_static_rtree.get() || CURRENT_TIMESTAMP != m_static_rtree->first)
+        {
+            LoadRTree();
+            BOOST_ASSERT(m_geospatial_query.get());
+        }
+        util::RectangleInt2D bbox = {south_west.lon, north_east.lon,
+                                     south_west.lat, north_east.lat};
+        return m_geospatial_query->Search(bbox);
+    }
+
     std::vector<PhantomNodeWithDistance>
     NearestPhantomNodesInRange(const util::FixedPointCoordinate input_coordinate,
                                const float max_distance,