GeoJson don't read GeometryCollection

CaiqueR commented 4 years ago

Hi, I'm creating an app for my college work and I decided to use your library to be able to read a geojson. But when it comes to reading geojson when it comes to a part that has a type that the library can't understand inside geometry which is the GeometryCollection

It's all right when the type is Polygon, which I'm using. Is there any way to ignore this exception to continue running the application or any implementation for it?

{
    "type": "Feature",
    "geometry": {
        "geometries": [
            {
                "type": "Polygon",
                "coordinates": [
                    [
                        [coordinates]
                    ]
                ]
            },
            {
                "type": "Polygon",
                "coordinates": [
                    [
                        [morecoordinates]
                    ]
                ]
            },
            {
                "type": "Polygon",
                "coordinates": [
                    [
                        [anycoordinate]
                    ]
                ]
            },
            {
                "type": "Polygon",
                "coordinates": [
                    [
                        [coordinate]
                    ]
                ]
            }
        ],
        "type": "GeometryCollection"
    },
    "properties": {
        "name": "Inexistente ou Baixo"
    }
}

My code:

final polygons = <Polygon>[];

  Future<bool> processData() async {
    final geojson = GeoJson();
    geojson.processedPolygons.listen((GeoJsonPolygon multiPolygon) {
      for (final polygon in multiPolygon.geoSeries) {
        final geoSerie = GeoSerie(
            type: GeoSerieType.polygon,
            name: polygon.name,
            geoPoints: <GeoPoint>[]);

        geoSerie.geoPoints.addAll(polygon.geoPoints);
        final color =
        Color((math.Random().nextDouble() * 0xFFFFFF).toInt() << 0)
            .withOpacity(0.3);
        Polygon poly = Polygon(
          polygonId: PolygonId('Nice one'),
          fillColor: color,
          points: toLatLng(geoSerie.geoPoints, ignoreErrors: true),
        );
        setState(() => polygons.add(poly));
      }
    });
    geojson.endSignal.listen((bool _) => geojson.dispose());
    // The data is from https://datahub.io/core/geo-countries
    final data = await rootBundle.loadString('assets/coordinates/map.geojson');
    final nameProperty = "Name";
      await geojson.parse(data, nameProperty: nameProperty, verbose: true);

    return true;
  }