/// <summary>
/// Decodes the given string.
/// </summary>
public override ILocation Decode(string encoded)
{
if (encoded == null)
{
throw new ArgumentNullException("encoded");
}
// the data in a binary decoder should be a base64 string.
byte[] binaryData = null;
try
{
binaryData = Convert.FromBase64String(encoded);
}
catch (FormatException ex)
{ // not a base64 string.
throw ex;
}
if (CircleLocationCodec.CanDecode(binaryData))
{
return(CircleLocationCodec.Decode(binaryData));
}
if (ClosedLineLocationCodec.CanDecode(binaryData))
{
return(ClosedLineLocationCodec.Decode(binaryData));
}
if (GeoCoordinateLocationCodec.CanDecode(binaryData))
{
return(GeoCoordinateLocationCodec.Decode(binaryData));
}
if (GridLocationCodec.CanDecode(binaryData))
{
return(GridLocationCodec.Decode(binaryData));
}
if (LineLocationCodec.CanDecode(binaryData))
{
return(LineLocationCodec.Decode(binaryData));
}
if (PointAlongLineLocationCodec.CanDecode(binaryData))
{
return(PointAlongLineLocationCodec.Decode(binaryData));
}
if (PoiWithAccessPointLocationCodec.CanDecode(binaryData))
{
return(PoiWithAccessPointLocationCodec.Decode(binaryData));
}
if (PolygonLocationCodec.CanDecode(binaryData))
{
return(PolygonLocationCodec.Decode(binaryData));
}
if (RectangleLocationCodec.CanDecode(binaryData))
{
return(RectangleLocationCodec.Decode(binaryData));
}
throw new ArgumentException(string.Format("Cannot decode string, no codec found: {0}", encoded));
}
public void DecodeBase64Test()
{
double delta = 0.0001;
// define a base64 string we are sure is a line location.
var stringData = Convert.FromBase64String("KwRbnyNGfhJBAv/P/7WSAEw=");
// decode.
Assert.IsTrue(PointAlongLineLocationCodec.CanDecode(stringData));
var location = PointAlongLineLocationCodec.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.
}