public bool TryWriteGeometry(JsonWriter writer, object value, JsonSerializer serializer)
{
ObjectType geomType = _shapeConverter.GetObjectType(value);
if (!_shapeConverter.CanConvert(geomType))
{
return(false);
}
switch (geomType)
{
case ObjectType.Point:
case ObjectType.LineString:
case ObjectType.Polygon:
case ObjectType.MultiPoint:
case ObjectType.MultiLineString:
case ObjectType.MultiPolygon:
break;
default:
return(false);
}
writer.WriteStartObject();
writer.WritePropertyName("type");
writer.WriteValue(Enum.GetName(typeof(ObjectType), geomType));
writer.WritePropertyName("coordinates");
switch (geomType)
{
case ObjectType.Point:
WriteJsonCoordinate(writer, _shapeConverter.FromPoint(value));
break;
case ObjectType.LineString:
WriteJsonCoordinates(writer, _shapeConverter.FromLineString(value));
break;
case ObjectType.MultiPoint:
WriteJsonCoordinates(writer, _shapeConverter.FromMultiPoint(value));
break;
case ObjectType.Polygon:
WriteJsonCoordinatesEnumerable(writer, _shapeConverter.FromPolygon(value));
break;
case ObjectType.MultiLineString:
WriteJsonCoordinatesEnumerable(writer, _shapeConverter.FromMultiLineString(value));
break;
case ObjectType.MultiPolygon:
WriteJsonCoordinatesEnumerable2(writer, _shapeConverter.FromMultiPolygon(value));
break;
}
writer.WriteEndObject();
return(true);
}
private void AppendMultiLineString(StringBuilder builder, object multiLineString)
{
var geometries = _shapeConverter.FromMultiLineString(multiLineString);
builder.Append("MULTILINESTRING");
if (geometries.Length == 0)
{
builder.Append(" EMPTY");
return;
}
AppendDimensions(builder, GetDimensions(geometries));
builder.Append(" (");
for (var i = 0; i < geometries.Length; i++)
{
if (i > 0)
{
builder.Append(", ");
}
AppendLineStringInner(builder, geometries[i]);
}
builder.Append(")");
}