MaplyTileFetcher

Objective-C

@protocol MaplyTileFetcher <NSObject>

Swift

protocol MaplyTileFetcher : NSObjectProtocol

Tile Fetcher protocol.

The tile fetcher interacts with loaders that want tiles, as demanded by samplers. A given data source (e.g. remote URL, MBTiles) needs one of these to fetch and return data.

  • Add a whole group of requests at once. This is useful if we want to avoid low priority tiles grabbing the slots first

    Declaration

    Objective-C

    - (void)startTileFetches:(NSArray<MaplyTileFetchRequest *> *_Nonnull)requests;

    Swift

    func startTileFetches(_ requests: [MaplyTileFetchRequest])

  • Update an active request with a new priority and importance

    Declaration

    Objective-C

    - (id _Nullable)updateTileFetch:(id _Nonnull)fetchID
                       priority:(int)priority
                     importance:(double)importance;

    Swift

    func updateTileFetch(_ fetchID: Any, priority: Int32, importance: Double) -> Any?

  • Name of this tile fetcher. Used for coordinating tile sources.

    Declaration

    Objective-C

    - (NSString *_Nonnull)name;

    Swift

    func name() -> String

  • Cancel a group of requests at once Use the object returned by the startTileFetch call (which is just a Request object)

    Declaration

    Objective-C

    - (void)cancelTileFetches:(NSArray *_Nonnull)requestRets;

    Swift

    func cancelTileFetches(_ requestRets: [Any])

  • Kill all outstanding connections and clean up

    Declaration

    Objective-C

    - (void)shutdown;

    Swift

    func shutdown()