public void DecodeBase64Test()
{
double delta = 0.0001;
// define a base64 string we are sure is a line location.
string stringData = "KwRbnyNGfhJBAv/P/7WSAEw=";
// decode.
var decoder = new PointAlongLineDecoder();
Assert.IsTrue(decoder.CanDecode(stringData));
var location = decoder.Decode(stringData);
Assert.IsNotNull(location);
Assert.IsInstanceOf <PointAlongLineLocation>(location);
var pointAlongLineLocation = (location as PointAlongLineLocation);
// check first reference.
Assert.IsNotNull(pointAlongLineLocation.First);
Assert.AreEqual(6.12829, pointAlongLineLocation.First.Coordinate.Longitude, delta); // 6.12829°
Assert.AreEqual(49.60597, pointAlongLineLocation.First.Coordinate.Latitude, delta); // 49.60597°
Assert.AreEqual(FunctionalRoadClass.Frc2, pointAlongLineLocation.First.FuntionalRoadClass);
Assert.AreEqual(FormOfWay.MultipleCarriageWay, pointAlongLineLocation.First.FormOfWay);
Assert.AreEqual(FunctionalRoadClass.Frc2, pointAlongLineLocation.First.LowestFunctionalRoadClassToNext);
Assert.AreEqual(17, pointAlongLineLocation.First.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
// check second reference.
Assert.IsNotNull(pointAlongLineLocation.Last);
Assert.AreEqual(6.12779, pointAlongLineLocation.Last.Coordinate.Longitude, delta); // 6.12779°
Assert.AreEqual(49.60521, pointAlongLineLocation.Last.Coordinate.Latitude, delta); // 49.60521°
Assert.AreEqual(FunctionalRoadClass.Frc2, pointAlongLineLocation.Last.FuntionalRoadClass);
Assert.AreEqual(FormOfWay.MultipleCarriageWay, pointAlongLineLocation.Last.FormOfWay);
Assert.AreEqual(3, pointAlongLineLocation.Last.Bearing.Value, 11.25); // binary encode loses accuracy for bearing.
// check other properties.
Assert.AreEqual(Orientation.NoOrientation, pointAlongLineLocation.Orientation);
Assert.AreEqual(SideOfRoad.Left, pointAlongLineLocation.SideOfRoad);
Assert.AreEqual(30.19, pointAlongLineLocation.PositiveOffsetPercentage, 0.5); // binary encode loses accuracy.
}
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 encoder = new PointAlongLineEncoder();
var stringData = encoder.Encode(location);
// decode again (decoding was tested above).
var decoder = new PointAlongLineDecoder();
var decodedLocation = decoder.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 = decoder.Decode(referenceStringData);
var referenceBinary = System.Convert.FromBase64String(referenceStringData);
var encodedBinary = System.Convert.FromBase64String(stringData);
// 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.
}
public void DecodeReferencedPointAlongLineLocation()
{
double delta = 0.0001;
// build the location to decode.
var location = new PointAlongLineLocation();
location.First = new LocationReferencePoint();
location.First.Coordinate = new Coordinate()
{
Latitude = 49.60597, Longitude = 6.12829
};
location.First.DistanceToNext = 92;
location.First.FuntionalRoadClass = FunctionalRoadClass.Frc2;
location.First.FormOfWay = FormOfWay.MultipleCarriageWay;
location.First.LowestFunctionalRoadClassToNext = FunctionalRoadClass.Frc2;
location.First.Bearing = 203;
location.Last = new LocationReferencePoint();
location.Last.Coordinate = new Coordinate()
{
Latitude = 49.60521, Longitude = 6.12779
};
location.Last.DistanceToNext = 10;
location.Last.FuntionalRoadClass = FunctionalRoadClass.Frc2;
location.Last.FormOfWay = FormOfWay.MultipleCarriageWay;
location.Last.Bearing = 23;
location.PositiveOffsetPercentage = (float)((28.0 / 92.0) * 100.0);
location.Orientation = Orientation.FirstToSecond;
location.SideOfRoad = SideOfRoad.Left;
// build a graph to decode onto.
var tags = new TagsTableCollectionIndex();
var graphDataSource = new DynamicGraphRouterDataSource <LiveEdge>(tags);
var vertex1 = graphDataSource.AddVertex(49.60597f, 6.12829f);
var vertex2 = graphDataSource.AddVertex(49.60521f, 6.12779f);
graphDataSource.AddEdge(vertex1, vertex2, new LiveEdge()
{
Distance = 10,
Forward = true,
Tags = tags.Add(new TagsCollection(Tag.Create("highway", "tertiary")))
}, null);
graphDataSource.AddEdge(vertex2, vertex1, new LiveEdge()
{
Distance = 10,
Forward = true,
Tags = tags.Add(new TagsCollection(Tag.Create("highway", "tertiary")))
}, null);
// decode the location
var graph = new BasicRouterDataSource <LiveEdge>(graphDataSource);
var decoder = new PointAlongLineDecoder();
var router = new BasicRouter();
var mainDecoder = new ReferencedOsmDecoder(graph, new BinaryDecoder());
var referencedDecoder = new ReferencedPointAlongLineDecoder(mainDecoder, decoder);
var referencedLocation = referencedDecoder.Decode(location);
// confirm result.
Assert.IsNotNull(referencedLocation);
Assert.IsNotNull(referencedLocation.Route);
Assert.IsNotNull(referencedLocation.Route.Edges);
Assert.AreEqual(vertex1, referencedLocation.Route.Vertices[0]);
Assert.AreEqual(vertex2, referencedLocation.Route.Vertices[1]);
var longitudeReference = (location.Last.Coordinate.Longitude - location.First.Coordinate.Longitude) * (location.PositiveOffsetPercentage.Value / 100.0) + location.First.Coordinate.Longitude;
var latitudeReference = (location.Last.Coordinate.Latitude - location.First.Coordinate.Latitude) * (location.PositiveOffsetPercentage.Value / 100.0) + location.First.Coordinate.Latitude;
Assert.AreEqual(longitudeReference, referencedLocation.Longitude, delta);
Assert.AreEqual(latitudeReference, referencedLocation.Latitude, delta);
Assert.AreEqual(Orientation.FirstToSecond, referencedLocation.Orientation);
}
