public static FeatureCollection FromGeoJson(string geoJson)
{
var jsonSerializer = new NetTopologySuite.IO.GeoJsonSerializer();
var jsonStream = new StringReader(geoJson);
return(jsonSerializer.Deserialize <FeatureCollection>(new JsonTextReader(jsonStream)) as FeatureCollection);
}
/// <summary>
/// Loads the test polygon.
/// </summary>
/// <returns></returns>
internal static IPolygon LoadPolygon()
{
using (var stream = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream("Sample.GeoFilter.polygon.geojson")))
{
var jsonSerializer = new NetTopologySuite.IO.GeoJsonSerializer();
var features = jsonSerializer.Deserialize <FeatureCollection>(new JsonTextReader(stream));
return(features.Features[0].Geometry as IPolygon);
}
}
/// <summary>
/// Gets a feature collection from an embedded geojson.
/// </summary>
public static FeatureCollection GetFeatureCollection(string embeddedResourceId)
{
using (var stream = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream(embeddedResourceId)))
{
var jsonReader = new JsonTextReader(stream);
var geoJsonSerializer = new NetTopologySuite.IO.GeoJsonSerializer();
return(geoJsonSerializer.Deserialize <FeatureCollection>(jsonReader) as FeatureCollection);
}
}
private static string ToJson(FeatureCollection featureCollection)
{
var jsonSerializer = new NetTopologySuite.IO.GeoJsonSerializer();
var jsonStream = new StringWriter();
jsonSerializer.Serialize(jsonStream, featureCollection);
var json = jsonStream.ToInvariantString();
return(json);
}
private static bool TestGeoJsonDeserialize <T>(string json) where T : class
{
var jr = new JsonTextReader(new StringReader(json));
var s = new NetTopologySuite.IO.GeoJsonSerializer();
var f = default(T);
Assert.DoesNotThrow(() => f = s.Deserialize <T>(jr));
Assert.IsNotNull(f);
return(true);
}
/// <summary>
/// Tests resolving all points in the given feature collection.
/// </summary>
public static void TestResolve(Router router, string embeddedResourceId,
Func <Router, GeoAPI.Geometries.Coordinate, Result <RouterPoint> > resolve)
{
FeatureCollection featureCollection;
using (var stream = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream(embeddedResourceId)))
{
var jsonReader = new JsonTextReader(stream);
var geoJsonSerializer = new NetTopologySuite.IO.GeoJsonSerializer();
featureCollection = geoJsonSerializer.Deserialize(jsonReader) as FeatureCollection;
}
TestResolve(router, featureCollection, resolve);
}
