private static NetTopologySuite.Geometries.Geometry LoadBounds(string scopeName, long relationId)
{
var scopeFile = $"{scopeName}\\Scope.osm";
var osm = FileSerializer.ReadXml <Osm>(scopeFile);
CompleteRelation relation;
if (osm != null)
{
relation = osm.GetElements().ToComplete().OfType <CompleteRelation>().First();
}
else
{
NonAuthClient client = new NonAuthClient("https://www.osm.org/api/", new HttpClient());
relation = client.GetCompleteRelation(relationId).Result;
FileSerializer.WriteXml(scopeFile, relation.ToSimpleWithChildren().AsOsm());
}
var geometry = FeatureInterpreter.DefaultInterpreter.Interpret(relation).First().Geometry;
if (geometry is LinearRing linRing)
{
var polygon = Polygon.DefaultFactory.CreatePolygon(linRing); // Or multipolygon?
return(polygon);
}
else if (geometry is MultiPolygon multi)
{
return(multi);
//Polygon.DefaultFactory.CreateMultiPolygon();
}
throw new Exception("unexpected geometry type: " + geometry.GetType().Name);
}
