Shaping routes with passthrough waypoints

The example request uses the same coordinates for origin, destination and via. The passThrough=true parameter is set for the via waypoint.

As a result, contrary to the previous example, the resulting route contains only one leg stretching from origin to destination, avoiding splitting into sections at the intermediate waypoint.

curl -gX GET 'https://router.hereapi.com/v8/routes?'\
'transportMode=car&'\
'return=polyline,summary,passthrough&'\
'origin=52.51375,13.42462&'\
'destination=52.52332,13.42800&'\
'via=52.52426,13.43000!passThrough=true&'\
'apiKey=YOUR_API_KEY'

{
  "routes": [
    {
      "id": "338a34f2-60c2-4ced-b9c4-074c3c2f8039",
      "sections": [
        {
          ...,
          "summary": {
            "duration": 256,
            "length": 1970,
            "baseDuration": 256
          },
          "passthrough": [
            {
              "place": {
                "type": "place",
                "location": {
                  "lat": 52.5242323,
                  "lng": 13.4301462
                },
                "originalLocation": {
                  "lat": 52.52426,
                  "lng": 13.43
                },
                "waypoint": 0
              },
              "offset": 49
            }
          ],
          "polyline": "...",
          "transport": {
            "mode": "car"
          }
        }
      ]
    }
  ]
}

With passThrough option set to true, the router doesn't introduce a U-turn at the waypoint (1) avoiding a change in travel direction, hence resulting in a different route shape (the orange line), as shown in the image.