public static GeometryObject ToGeometry(this GeoRssPolygon georssPolygon)
{
if (georssPolygon.Item == null)
{
return(null);
}
Polygon polygon = new Polygon();
polygon.LineStrings = new List <LineString>();
LineString ls = new LineString(new DirectPositionListType()
{
Text = georssPolygon.Item
}.ToGeometry());
if (ls.Positions.Count < 4 || !ls.IsClosed())
{
throw new InvalidFormatException("invalid GML representation: linearring is not a closed ring of minimum 4 positions");
}
polygon.LineStrings.Add(ls);
return(polygon);
}
public void GeoRssPloygonTestCase()
{
string xml = "<georss:polygon xmlns:georss=\"http://www.georss.org/georss\">45.256 -110.45 46.46 -109.48 43.84 -109.86 45.256 -110.45</georss:polygon>";
var reader = XmlReader.Create(new StringReader(xml));
Terradue.GeoJson.GeoRss.GeoRssPolygon line = (Terradue.GeoJson.GeoRss.GeoRssPolygon)Terradue.GeoJson.GeoRss.GeoRssHelper.Deserialize(reader);
var geom = line.ToGeometry();
Assert.That(geom is Polygon);
Assert.That(((Polygon)geom).LineStrings[0].Positions[0] is GeographicPosition);
Assert.AreEqual(45.256, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[0]).Latitude);
Assert.AreEqual(-110.45, ((GeographicPosition)((Polygon)geom).LineStrings[0].Positions[0]).Longitude);
Assert.True(((Polygon)geom).LineStrings[0].IsClosed());
line = (GeoRssPolygon)geom.ToGeoRss();
var sw = new StringWriter();
GeoRssHelper.Serialize(XmlWriter.Create(sw), line);
sw.Close();
var xml1 = sw.ToString();
Assert.IsTrue(XNode.DeepEquals(XDocument.Parse(xml).Root, XDocument.Parse(xml1).Root));
}
