withIn method
距离中心点的最大距离
radians
(公里)
Implementation
GeoPointBuilder withIn([List<BmobGeoPoint> box = const []]) {
if (box.isNotEmpty) {
_json['\$within'] = {"$box": box.map((e) => e.toJson()).toList()};
} else {
_json.remove('\$within');
}
return this;
}