/// <summary>
/// Converts JSON geometry to KML geometry.
/// </summary>
/// <param name="geometry">ArcGIS JSON geometry</param>
/// <returns><see cref="Geometry"/></returns>
public static Geometry JsonToKmlGeometry(Dictionary<string, object> geometry)
{
Geometry placemarkGeometry;
if (geometry.Keys.Contains("x"))
{
// Create point geometry
// x and y are decimals;
var x = Convert.ToDouble(geometry["x"]);
var y = Convert.ToDouble(geometry["y"]);
placemarkGeometry = new Point { Coordinate = new Vector(y, x) };
}
else if (geometry.Keys.Contains("rings"))
{
// Create polygon geometry
var rings = (ArrayList)geometry["rings"];
var linearRings = from ArrayList ring in rings
select new LinearRing
{
Coordinates = new CoordinateCollection(from ArrayList point in ring
select new Vector(
Convert.ToDouble(point[1]),
Convert.ToDouble(point[0])
))
};
if (linearRings.Count() > 1)
{
var polygon = new Polygon();
polygon.OuterBoundary = new OuterBoundary { LinearRing = linearRings.ElementAt(0) };
var innerBoundaries = from lr in linearRings.Skip(1)
select new InnerBoundary { LinearRing = lr };
foreach (var ib in innerBoundaries)
{
polygon.AddInnerBoundary(ib);
}
placemarkGeometry = polygon;
}
else
{
placemarkGeometry = linearRings.First();
}
}
else if (geometry.Keys.Contains("paths"))
{
// Create line geometry
var paths = (ArrayList)geometry["paths"];
var lineStrings = from ArrayList path in paths
select new LineString
{
Coordinates = new CoordinateCollection(from ArrayList point in path
select new Vector(
Convert.ToDouble(point[1]),
Convert.ToDouble(point[0])
))
};
if (lineStrings.Count() > 1)
{
var multiGeo = new MultipleGeometry();
foreach (var ls in lineStrings)
{
multiGeo.AddGeometry(ls);
}
placemarkGeometry = multiGeo;
}
else
{
placemarkGeometry = lineStrings.First();
}
}
else
{
placemarkGeometry = null;
}
return placemarkGeometry;
}
private Polygon CreateKmlPolygon(IPolygon polygon)
{
var kmlPolygon = new Polygon();
var ring = new LinearRing { Coordinates = new CoordinateCollection() };
kmlPolygon.OuterBoundary = new OuterBoundary { LinearRing = ring };
foreach (var coordinate in polygon.ExteriorRing.Coordinates)
{
ring.Coordinates.Add(new Vector(coordinate.Y, coordinate.X));
}
foreach (var interiorRing in polygon.InteriorRings)
{
var innerBoundary = new InnerBoundary();
kmlPolygon.AddInnerBoundary(innerBoundary);
ring = new LinearRing { Coordinates = new CoordinateCollection() };
innerBoundary.LinearRing = ring;
foreach (var coordinate in interiorRing.Coordinates)
{
ring.Coordinates.Add(new Vector(coordinate.Y, coordinate.X));
}
}
return kmlPolygon;
}