/// <summary>
/// Encodes the given location.
/// </summary>
public override string Encode(ILocation location)
{
if (location == null)
{
throw new ArgumentNullException("location");
}
byte[] encoded = null;
if (location is LineLocation)
{
encoded = LineLocationCodec.Encode(location as LineLocation);
}
else if (location is PointAlongLineLocation)
{
encoded = PointAlongLineLocationCodec.Encode(location as PointAlongLineLocation);
}
else
{
throw new ArgumentException("Encoding failed, this type of location is not supported.");
}
// decode into a byte array and convert to a base64 string.
return(Convert.ToBase64String(encoded));
}
public void EncodeBase64Test()
{
double delta = 0.0001;
// create a location.
var location = new PointAlongLineLocation();
location.First = new LocationReferencePoint();
location.First.Coordinate = new Coordinate()
{
Latitude = 49.60597,
Longitude = 6.12829
};
location.First.FuntionalRoadClass = FunctionalRoadClass.Frc2;
location.First.FormOfWay = FormOfWay.MultipleCarriageWay;
location.First.LowestFunctionalRoadClassToNext = FunctionalRoadClass.Frc2;
location.First.Bearing = 17;
location.First.DistanceToNext = (int)(58.6 * 2) + 1;
location.Last = new LocationReferencePoint();
location.Last.Coordinate = new Coordinate()
{
Latitude = 49.60521,
Longitude = 6.12779
};
location.Last.FuntionalRoadClass = FunctionalRoadClass.Frc2;
location.Last.FormOfWay = FormOfWay.MultipleCarriageWay;
location.Last.Bearing = 3;
location.Last.DistanceToNext = 0;
location.Orientation = Orientation.NoOrientation;
location.SideOfRoad = SideOfRoad.Left;
location.PositiveOffsetPercentage = 30.19f;
// encode.
var stringData = PointAlongLineLocationCodec.Encode(location);
// decode again (decoding was tested above).
var decodedLocation = PointAlongLineLocationCodec.Decode(stringData);
Assert.IsNotNull(decodedLocation);
Assert.IsInstanceOf <PointAlongLineLocation>(decodedLocation);
var pointAlongLineLocation = (decodedLocation as PointAlongLineLocation);
// check first reference.
Assert.IsNotNull(pointAlongLineLocation.First);
Assert.AreEqual(location.First.Coordinate.Longitude, pointAlongLineLocation.First.Coordinate.Longitude, delta); // 6.12829°
Assert.AreEqual(location.First.Coordinate.Latitude, pointAlongLineLocation.First.Coordinate.Latitude, delta); // 49.60597°
Assert.AreEqual(location.First.FuntionalRoadClass, pointAlongLineLocation.First.FuntionalRoadClass);
Assert.AreEqual(location.First.FormOfWay, pointAlongLineLocation.First.FormOfWay);
Assert.AreEqual(location.First.LowestFunctionalRoadClassToNext, pointAlongLineLocation.First.LowestFunctionalRoadClassToNext);
Assert.AreEqual(location.First.Bearing.Value, pointAlongLineLocation.First.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
Assert.AreEqual(location.First.DistanceToNext, pointAlongLineLocation.First.DistanceToNext);
// check second reference.
Assert.IsNotNull(pointAlongLineLocation.Last);
Assert.AreEqual(location.Last.Coordinate.Longitude, pointAlongLineLocation.Last.Coordinate.Longitude, delta); // 6.12779°
Assert.AreEqual(location.Last.Coordinate.Latitude, pointAlongLineLocation.Last.Coordinate.Latitude, delta); // 49.60521°
Assert.AreEqual(location.Last.FuntionalRoadClass, pointAlongLineLocation.Last.FuntionalRoadClass);
Assert.AreEqual(location.Last.FormOfWay, pointAlongLineLocation.Last.FormOfWay);
Assert.AreEqual(location.Last.Bearing.Value, pointAlongLineLocation.Last.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
Assert.AreEqual(location.Last.DistanceToNext, pointAlongLineLocation.Last.DistanceToNext);
// check other properties.
Assert.AreEqual(location.Orientation, pointAlongLineLocation.Orientation);
Assert.AreEqual(location.SideOfRoad, pointAlongLineLocation.SideOfRoad);
Assert.AreEqual(location.PositiveOffsetPercentage.Value, pointAlongLineLocation.PositiveOffsetPercentage.Value, 0.5f); // binary encode loses accuracy.
// compare again with reference encoded string.
var referenceStringData = "KwRbnyNGfhJBAv/P/7WSAEw=";
var referenceDecodedLocation = PointAlongLineLocationCodec.Decode(Convert.FromBase64String(referenceStringData));
var referenceBinary = System.Convert.FromBase64String(referenceStringData);
// check first reference.
Assert.IsNotNull(pointAlongLineLocation.First);
Assert.AreEqual(referenceDecodedLocation.First.Coordinate.Longitude, pointAlongLineLocation.First.Coordinate.Longitude, delta); // 6.12829°
Assert.AreEqual(referenceDecodedLocation.First.Coordinate.Latitude, pointAlongLineLocation.First.Coordinate.Latitude, delta); // 49.60597°
Assert.AreEqual(referenceDecodedLocation.First.FuntionalRoadClass, pointAlongLineLocation.First.FuntionalRoadClass);
Assert.AreEqual(referenceDecodedLocation.First.FormOfWay, pointAlongLineLocation.First.FormOfWay);
Assert.AreEqual(referenceDecodedLocation.First.LowestFunctionalRoadClassToNext, pointAlongLineLocation.First.LowestFunctionalRoadClassToNext);
Assert.AreEqual(referenceDecodedLocation.First.Bearing.Value, pointAlongLineLocation.First.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
// check second reference.
Assert.IsNotNull(pointAlongLineLocation.Last);
Assert.AreEqual(referenceDecodedLocation.Last.Coordinate.Longitude, pointAlongLineLocation.Last.Coordinate.Longitude, delta); // 6.12779°
Assert.AreEqual(referenceDecodedLocation.Last.Coordinate.Latitude, pointAlongLineLocation.Last.Coordinate.Latitude, delta); // 49.60521°
Assert.AreEqual(referenceDecodedLocation.Last.FuntionalRoadClass, pointAlongLineLocation.Last.FuntionalRoadClass);
Assert.AreEqual(referenceDecodedLocation.Last.FormOfWay, pointAlongLineLocation.Last.FormOfWay);
Assert.AreEqual(referenceDecodedLocation.Last.Bearing.Value, pointAlongLineLocation.Last.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
// check other properties.
Assert.AreEqual(referenceDecodedLocation.Orientation, pointAlongLineLocation.Orientation);
Assert.AreEqual(referenceDecodedLocation.SideOfRoad, pointAlongLineLocation.SideOfRoad);
Assert.AreEqual(referenceDecodedLocation.PositiveOffsetPercentage.Value, pointAlongLineLocation.PositiveOffsetPercentage.Value, 0.5f); // binary encode loses accuracy.
}
