private static Command ReadGFill(int b1, Stream stream) { int n = (b1 & 0b11111000) >> 3; int dx = stream.StrictReadByte(); int dy = stream.StrictReadByte(); int dz = stream.StrictReadByte(); Delta nd = DeltaDecoder.DecodeNd(n); Delta fd = DeltaDecoder.DecodeFd(dx, dy, dz); return(Commands.GFill(nd, fd)); }