[Brahms-dev-l] brat version 2.22.7

Hi,

I have updated brat to version 2.22.7, tag BRAT-2-22-7.

Changes (mainly):

* BrMagnetVolume::GetSwimStatus :

- fixed bug (radius squared business) + fixed an old issue about radius 
sign for D1.

- the "fiducial point" now contains the distance to the nearest gap in X 
and Y (Z is still a coordinate, which is very handy for display purposes, 
see below). So, when you call BrMatchedTrack::GetFidPoint().GetX() or 
GetY(), if it is positive (negative), it means that the nearest point is 
inside (outside) the physical gap. Therefore, applying fiducial cuts is 
possible afterwards (e.g. from the DSTs) by checking the inequations 

  fidpoint.X < cutX  -> reject
  fidpoint.Y < cutY  -> reject

where cutX and Y are fiducial distances (e.g. the typical 1cm we use).

I have added another display macro in brahms_app/do_app/track called
d1swimDisplay.C

It works like the older trackmatchDisplay.C except that it checks mainly 
the D1 swim status and vertex projection to the global plane X = 0 + BB 
plane. Very instructive, especially regarding the track vertex business 
of late ! :)

Usage in bratroot (rcas is recommended for reading ltr files) : 
.L d1swimDisplay.C
Init(<runno>, "ltr data location") // i'm not using the file catalog until 
                                   // the AddFileSet works properly

Event(<n>) // n is the number of FFS tracks to trig on 

repeat this one ad nauseam if you want or until eof.

ZoominD1() // for closerly checking D1
ZoominVtx() // for zooming in on the vertex region
Zoomout() // get back to large overview

Finish() // for finishing cleanly to have the possibility to call Init() 
         // again cleanly (another run, etc).

Have fun :)

Djam



-- 
Djamel Ouerdane ------------------------------------------o
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