Function collectForeignMembers

CesiumVectorData/src/GeoJsonDocument.cpp:49–62

 */
template <typename Predicate>
JsonValue::Object collectForeignMembers(
    const rapidjson::Value::ConstObject& obj,
    const Predicate& predicate) {
  JsonValue::Object newObj;

  for (auto it = obj.MemberBegin(); it != obj.MemberEnd(); ++it) {
    const std::string& name = it->name.GetString();
    if (name != "type" && name != "bbox" && !predicate(name)) {
      newObj.emplace(name, JsonHelpers::toJsonValue(it->value));
    }
  }

  return newObj;
}

// GeoJSON position is an array of two or three components, representing
// [longitude, latitude, (height)]