class AliSimDigits : public AliDigits{
public:
AliSimDigits();
+ AliSimDigits(const AliSimDigits ¶m);
+ AliSimDigits &operator = (const AliSimDigits & digits);
virtual ~AliSimDigits();
void AllocateTrack(Int_t length); //construct empty buffer fTracks with size rows x column x length (number of tracks for one digit)
Int_t *GetTracks(){return fTracks->GetArray();}