public static GeometryObject ToGeometry(this GeoRssBox georssBox)
{
if (georssBox.Item == null)
{
return(null);
}
List <IPosition> position = new List <IPosition>();
List <LineString> polygon = new List <LineString>();
string georssbox;
georssbox = georssBox.Item.Trim();
string[] pos = georssbox.Split(' ');
if (pos.Length != 4)
{
throw new InvalidFormatException("invalid GeoRSS representation: georss:box members are not 4 :" + georssbox);
}
position.Add(new GeographicPosition(pos[0], pos[1]));
position.Add(new GeographicPosition(pos[0], pos[3]));
position.Add(new GeographicPosition(pos[2], pos[3]));
position.Add(new GeographicPosition(pos[2], pos[1]));
position.Add(new GeographicPosition(pos[0], pos[1]));
polygon.Add(new LineString(position));
return(new Polygon(polygon));
}
public void GeoRssBoxTestCase()
{
string xml = "<georss:box xmlns:georss=\"http://www.georss.org/georss\">42.943 -71.032 43.039 -69.856</georss:box>";
var reader = XmlReader.Create(new StringReader(xml));
Terradue.GeoJson.GeoRss.GeoRssBox box = (Terradue.GeoJson.GeoRss.GeoRssBox)Terradue.GeoJson.GeoRss.GeoRssHelper.Deserialize(reader);
var geom = box.ToGeometry();
Assert.That(geom is Polygon);
Assert.That(((Polygon)geom).LineStrings[0].Positions[0] is GeographicPosition);
Assert.AreEqual(42.943, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[0]).Latitude);
Assert.AreEqual(-71.032, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[0]).Longitude);
Assert.AreEqual(42.943, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[1]).Latitude);
Assert.AreEqual(-69.856, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[1]).Longitude);
Assert.True(((Polygon)geom).LineStrings[0].IsClosed());
var poly = (GeoRssPolygon)geom.ToGeoRss();
var sw = new StringWriter();
GeoRssHelper.Serialize(XmlWriter.Create(sw), poly);
var xml1 = sw.ToString();
sw = new StringWriter();
GeoRssHelper.Serialize(XmlWriter.Create(sw), box);
sw.Close();
xml1 = sw.ToString();
Assert.IsTrue(XNode.DeepEquals(XDocument.Parse(xml).Root, XDocument.Parse(xml1).Root));
}
