ตั้งค่าจุดอ้างอิงระดับกลาง

curl -X POST -d '{
  "origin":{
    "location":{
      "latLng":{
        "latitude": 37.419734,
        "longitude": -122.0827784
      }
    }
  },
  "destination":{
    "location":{
      "latLng":{
        "latitude": 37.417670,
        "longitude": -122.079595
      }
    }
  },
  "intermediates": [
    {
      "location":{
        "latLng":{
          "latitude": 37.419734,
          "longitude": -122.0807784
        }
      }
    }
  ],
  "travelMode": "DRIVE"
}' \
-H 'Content-Type: application/json' -H 'X-Goog-Api-Key: YOUR_API_KEY' \
-H 'X-Goog-FieldMask: routes.duration,routes.distanceMeters,routes.legs' \
'https://routes.googleapis.com/directions/v2:computeRoutes'

{
  "routes": [
    {
      "distanceMeters": 805,
      "duration": "248s",
      "legs": [
        {
          "distanceMeters": 207,
          "duration": "89s",
          "startLocation": {
            "latLng": {
              "latitude": 37.4197318,
              "longitude": -122.0826233
            }
          },
          "endLocation": {
            "latLng": {
              "latitude": 37.419734,
              "longitude": -122.0807792
            }
          }
        },
        {
          "distanceMeters": 598,
          "duration": "159s",
          "startLocation": {
            "latLng": {
              "latitude": 37.419734,
              "longitude": -122.0807792
            }
          },
          "endLocation": {
            "latLng": {
              "latitude": 37.4176166,
              "longitude": -122.0793882
            }
          }
        }
      ]
    }
  ]
}