public void GeometryCollection()
{
var reader = new GeoJsonReader();
var geo = new GeometryCollection(new Point(0, 0), new Point(1, 0));
Assert.AreEqual(
@"{""type"":""GeometryCollection"",""geometries"":[{""type"":""Point"",""coordinates"":[0,0]},{""type"":""Point"",""coordinates"":[0,1]}]}",
geo.ToGeoJson());
Assert.AreEqual(geo, reader.Read(geo.ToGeoJson()));
}
private bool TryParseGeometryCollection(JsonObject obj, out object result)
{
result = null;
var geometries = obj["geometries"] as JsonArray;
if (geometries != null)
{
var temp =new object[geometries.Count];
for (var index = 0; index < geometries.Count; index++)
{
var geometry = geometries[index];
if (!TryParseGeometry((JsonObject)geometry, out temp[index]))
return false;
}
result = new GeometryCollection(temp.Cast<IGeometry>());
return true;
}
return false;
}
private void AppendGeometryCollection(StringBuilder builder, GeometryCollection geometryCollection)
{
builder.Append("GEOMETRYCOLLECTION");
if (geometryCollection.IsEmpty)
{
builder.Append(" EMPTY");
return;
}
AppendDimensions(builder, geometryCollection);
builder.Append(" (");
for (var i = 0; i < geometryCollection.Geometries.Count; i++)
{
if (i > 0)
builder.Append(", ");
AppendGeometry(builder, geometryCollection.Geometries[i]);
}
builder.Append(")");
}
private void WriteGeometryCollection(GeometryCollection collection, WkbBinaryWriter writer)
{
WriteEncoding(writer, _settings.Encoding);
WriteGeometryType(collection, WkbGeometryType.GeometryCollection, writer);
var geometries = collection.Geometries.Where(x => !(x is Point) || !x.IsEmpty).ToList();
writer.Write((uint)geometries.Count);
foreach (var geometry in geometries)
Write(geometry, writer);
}
private Dictionary<string, object> WriteGeometryCollection(GeometryCollection geometryCollection)
{
return new Dictionary<string, object>
{
{ "type", "GeometryCollection" },
{ "geometries", geometryCollection.Geometries.Select(WriteGeometry).ToArray() }
};
}