public string Transform(GoogleLatLng[] points)
{
if (points == null)
{
return(null);
}
if (points.Length < 1)
{
throw new ArgumentException("Points array must contain at least one element.", "points");
}
double lat = 0, lng = 0;
string polyline = string.Empty;
for (int i = 0; i < points.Length; i++)
{
polyline += string.Format("{0}{1}", EncodedPolyline.Encode(points[i].Latitude - lat), EncodedPolyline.Encode(points[i].Longitude - lng));
lat = points[i].Latitude;
lng = points[i].Longitude;
}
return(string.Format("enc:{0}", polyline));
}
public void EncodePositions(double[] inValues, string expected)
{
var lonVals = inValues.Where((val, index) => (index % 2) == 0);
var latVals = inValues.Where((val, index) => (index % 2) == 1);
var inList = latVals.Zip(lonVals).Select((pos) => new Position(pos.First, pos.Second)).ToList();
var encodedStr = EncodedPolyline.Encode(new List <Position> (inList));
Assert.Equal(expected, encodedStr);
}
public void EncodeEmptyPositions()
{
var encodedStr = EncodedPolyline.Encode(new List <Position> ());
Assert.True(string.IsNullOrEmpty(encodedStr));
}