[Brahms-dev-l] brat ver 2.21.1 -- TpcHit information

> Hi pawel
>
> I had already looked into this before, It was not quite as simple as to
> remove the //! in the
> hitlist, since we do not always want to write this out (filesize +15%) The
> changes described
> below to brat should make this work. I tested it on a newly generated
> ltr-file, and both reading of old and new files seems fine.
>
> I will rerun the pp data from 11880 and 11882 (the last two runs with hits
> kept) so you can invertigate
> later we can of course run other specific runs with the hits stored, but
> would not like to do it for all.
>
> flemming
>
>
>
> There has been discussion on how to check the t2,t1 position using t3
> tracks.
> This was almost possible with the current brat classes and the hit
> information used locally
> in BrTpcTrackCandidate. Since we do though not always want to write this
> information to disk
> methods had to be added to deal with this properly.
> Another complication was that the hist are owned by the brannch that has
> all hits in a TPC.
>
> Changes was made to the various dataclasses such this would be simple.
> Essentially if you add the statement to the local tracking it works.
>
> //    trackPackage->SetHitsInOutput(kTRUE);
>
> and the results can be inspected e.g. b
>
>   frtpc = inEvent ->GetDataTable(Form("TpcTrack %s", frname.Data()));
>   // front TPC tracks
>   if(frtpc){
>
>     int mk=0;
>     for (Int_t t = 0; t < frtpc->GetEntries(); t++)
>       {
> BrTpcTrackCandidate* tptrk = (BrTpcTrackCandidate*) frtpc->At(t);
> const Int_t nhit = tptrk->GetNhit();
> cout << nhit << endl;
> for(int k = 0;k<nhit;k++){
>   BrTpcHit* hit = tptrk->GetHitAt(k);
>   if(hit){
>     BrVector3D ent  = hit->GetPos();
> ...
>
> etc
>
> BrTrackCandidate
>
> //____________________________________________________________________
> //
> //  During normal usage the hits associated with tracks are kept during
> //  the localtracking part but removed at the end but the
> TpcTrackFollowModule.
> //  At times it can be usefull to keep the tracks, this can be done by
> //  setting the following flag in the BrTpcTrackPackage
> //
> //    BrTpcTrackPackage* trackPackage =
> //      new BrTpcTrackPackage(tpcNames[i], "tracking Module");
> //
> //    trackPackage->SetHitsInOutput(kTRUE);
> // The container of hits are kepr in a TRefArray since the hits are usual
> // contained in anoter BrDataTable (TObjArray) and in order to be written
> out
> // effeciently the TRef mechanism is just perfect.
> //
>
> The classdef was updated to 2.
>
> BrTpcTrackPackage
>
> //  During normal usage the hits associated with tracks are kept during
> //  the localtracking part but removed at the end but the
> TpcTrackFollowModule.
> //  At times it can be usefull to keep the tracks, this can be done by
> //  setting the following flag in the BrTpcTrackPackage
> //
> //    BrTpcTrackPackage* trackPackage =
> //      new BrTpcTrackPackage(tpcNames[i], "tracking Module");
> //
> //    trackPackage->SetHitsInOutput(kTRUE);

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