Consider distance from distance dimension rather than entire cost in cvrp_reload (#4522)

Author: arnabanimesh

examples/notebook/routing/cvrp_reload.ipynb

@@ -384,6 +384,7 @@
     "    total_time = 0\n",
     "    capacity_dimension = routing.GetDimensionOrDie(\"Capacity\")\n",
     "    time_dimension = routing.GetDimensionOrDie(\"Time\")\n",
+    "    distance_dimension = routing.GetDimensionOrDie(\"Distance\")\n",
     "    dropped = []\n",
     "    for order in range(6, routing.nodes()):\n",
     "        index = manager.NodeToIndex(order)\n",
@@ -411,7 +412,7 @@
     "            )\n",
     "            previous_index = index\n",
     "            index = assignment.Value(routing.NextVar(index))\n",
-    "            distance += routing.GetArcCostForVehicle(previous_index, index, vehicle_id)\n",
+    "            distance += distance_dimension.GetTransitValue(previous_index, index, vehicle_id)\n",
     "        load_var = capacity_dimension.CumulVar(index)\n",
     "        time_var = time_dimension.CumulVar(index)\n",
     "        plan_output += (\n",

ortools/routing/samples/cvrp_reload.py

@@ -317,6 +317,7 @@ def print_solution(
     total_time = 0
     capacity_dimension = routing.GetDimensionOrDie("Capacity")
     time_dimension = routing.GetDimensionOrDie("Time")
+    distance_dimension = routing.GetDimensionOrDie("Distance")
     dropped = []
     for order in range(6, routing.nodes()):
         index = manager.NodeToIndex(order)
@@ -344,7 +345,7 @@ def print_solution(
             )
             previous_index = index
             index = assignment.Value(routing.NextVar(index))
-            distance += routing.GetArcCostForVehicle(previous_index, index, vehicle_id)
+            distance += distance_dimension.GetTransitValue(previous_index, index, vehicle_id)
         load_var = capacity_dimension.CumulVar(index)
         time_var = time_dimension.CumulVar(index)
         plan_output += (