private bool TryParseMultiPolygon(JsonObject obj, out object result)
{
var coordinates = obj["coordinates"] as JsonArray;
Coordinate[][][] co;
if (coordinates != null && TryParseCoordinateArrayArrayArray(coordinates, out co))
{
result = new MultiPolygon(co.Select(x =>
new Polygon(new LinearRing(x.First()), x.Skip(1).Select(c => new LinearRing(c)))
));
return true;
}
result = null;
return false;
}
private void AppendMultiPolygon(StringBuilder builder, MultiPolygon multiPolygon)
{
builder.Append("MULTIPOLYGON");
if (multiPolygon.IsEmpty)
{
builder.Append(" EMPTY");
return;
}
AppendDimensions(builder, multiPolygon);
builder.Append(" (");
for (var i = 0; i < multiPolygon.Geometries.Count; i++)
{
if (i > 0)
builder.Append(", ");
AppendPolygonInner(builder, (Polygon)multiPolygon.Geometries[i]);
}
builder.Append(")");
}
private void WriteMultiPolygon(MultiPolygon multiPolygon, WkbBinaryWriter writer)
{
WriteEncoding(writer, _settings.Encoding);
WriteGeometryType(multiPolygon, WkbGeometryType.MultiPolygon, writer);
writer.Write((uint)multiPolygon.Geometries.Count);
foreach (var polygon in multiPolygon.Geometries.Cast<Polygon>())
Write(polygon, writer);
}
private void WriteMultiPolygon(MultiPolygon multiPolygon, WkbBinaryWriter writer)
{
WriteGeometryType(multiPolygon, WkbGeometryType.MultiPolygon, writer);
writer.Write((uint)multiPolygon.Geometries.Count);
foreach (var polygon in multiPolygon.Geometries.Cast<Polygon>())
WritePolygonInner(polygon, writer);
}
private Dictionary<string, object> WriteMultiPolygon(MultiPolygon multiPolygon)
{
return new Dictionary<string, object>
{
{ "type", "MultiPolygon" },
{ "coordinates", multiPolygon.Geometries.Cast<Polygon>().Select(WriteCoordinates).ToArray() }
};
}
public void MultiPolygon()
{
var reader = new GeoJsonReader();
var geo =
new MultiPolygon(
new Polygon(new LinearRing(new Coordinate(0, 0), new Coordinate(1, 1), new Coordinate(2, 0),
new Coordinate(0, 0))));
Assert.AreEqual(@"{""type"":""MultiPolygon"",""coordinates"":[[[[0,0],[1,1],[0,2],[0,0]]]]}",
geo.ToGeoJson());
Assert.AreEqual(geo, reader.Read(geo.ToGeoJson()));
}
