From 2e1fd304d0d5cc9f71071eb1152761184027965d Mon Sep 17 00:00:00 2001
From: Yannick Brosseau <yannick.brosseau@gmail.com>
Date: Sat, 25 Nov 2023 10:02:46 -0500
Subject: [PATCH] In the OSRMGeoFilter, if the first euclidean pass did not
 return any node, don't request data from OSRM

OSRM would return no results as at best it can do the euclidean distance.

Closes: #264
---
 src/osrmgeofilter.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/osrmgeofilter.cpp b/src/osrmgeofilter.cpp
index 94bcca1..5566e02 100644
--- a/src/osrmgeofilter.cpp
+++ b/src/osrmgeofilter.cpp
@@ -45,6 +45,14 @@ namespace TrRouting {
       }
     }
 
+    // If we don't have any node accessible with the euclidean distance, don't bother calculating
+    // the exact distance with OSRM
+    if (birdDistanceAccessibleNodeIndexes.size() == 0) {
+      // Return the empty vector
+      spdlog::debug("There was no node potentially accessible, we did not ask OSRM");
+      return accessibleNodesFootpaths;
+    }
+
     queryString += "?annotations=duration,distance";
 
     if (reversed)