call method

bool call(double lon, double lat, LocationSet locationSet)

Tests whether a location (lon, lat) matches the locationSet rules. First checks for exclude rules, so excluding a country but including a city in it won't work. Empty rules satisfy any location.

Implementation

bool call(double lon, double lat, LocationSet locationSet) {
  if (locationSet.isEmpty) return true;

  bool anyIncludes = false;

  // First check circular areas, since it's the fastest.
  if (locationSet.excludeCircular.any((area) => area.contains(lon, lat)))
    return false;

  anyIncludes |=
      locationSet.includeCircular.any((area) => area.contains(lon, lat));

  // Now check additional polygons.
  final List<String> includeGeojson = locationSet.include
      .where((element) => element.endsWith('.geojson'))
      .toList();
  final List<String> excludeGeojson = locationSet.exclude
      .where((element) => element.endsWith('.geojson'))
      .toList();

  if (includeGeojson.isNotEmpty || excludeGeojson.isNotEmpty) {
    final List<String> geojsonIds = additionalPolygons
        .all(lon, lat)
        .map((e) => e['id'] as String)
        .toList();

    if (excludeGeojson.any((id) => geojsonIds.contains(id))) return false;
    anyIncludes |= includeGeojson.any((id) => geojsonIds.contains(id));
  }

  // And finally employ CountryCoder for the remaining ids.
  if (locationSet.exclude
      .where((element) => !element.endsWith('.geojson'))
      .any((id) => countryCoder.isIn(lon: lon, lat: lat, inside: id)))
    return false;

  // If the list is empty, consider it including everything.
  if (locationSet.include.isEmpty) return true;

  anyIncludes |= locationSet.include
      .where((element) => !element.endsWith('.geojson'))
      .any((id) => countryCoder.isIn(lon: lon, lat: lat, inside: id));

  return anyIncludes;
}