readAtlasesBlock method

Implementation

Future<List<Uint8List>> readAtlasesBlock(
    StreamReader block, dynamic context) {
  // Determine whether or not the atlas is in or out of band.
  bool isOOB = block.readBool('isOOB');
  block.openArray('data');
  int numAtlases = block.readUint16Length();
  Future<List<Uint8List>> result;
  if (isOOB) {
    List<Future<Uint8List>> waitingFor = <Future<Uint8List>>[];
    for (int i = 0; i < numAtlases; i++) {
      waitingFor.add(readOutOfBandAsset(block.readString('data'), context));
    }
    result = Future.wait(waitingFor);
  } else {
    // This is sync.
    List<Uint8List> inBandAssets = <Uint8List>[];
    for (int i = 0; i < numAtlases; i++) {
      inBandAssets.add(block.readAsset());
    }
    Completer<List<Uint8List>> completer = Completer<List<Uint8List>>();
    completer.complete(inBandAssets);
    result = completer.future;
  }
  block.closeArray();
  return result;
}