Re: Still can't get bb vertex

From: Djamel Ouerdane (ouerdane@nbi.dk)
Date: Fri Oct 26 2001 - 16:17:46 EDT

  • Next message: Stephen J. Sanders: "Re: Still can't get bb vertex"

    Hi Steve, don't worry about the long list of params claiming there are not 
    set. There are at begin time in fact. And this list shows up at Init time.
    
    For the stuff you got, that's odd since you should always have a vertex 
    (since the fastest tube method always works....euh, not that's not true!)
    I got it: the cal hits module make sure that you have always some hits in 
    left and right arrays to build the vtx.
    It might happen that your thresholds and TDC requirements to construct the 
    cal hits are not met because of hits that are under thresholds or having a 
    TDC overlowed.
    
    then, the vertex module won't have anything to build a vtx from.
    if you try to get the vtx, make sure it's not null pointer:
    
     if (vtx)
      cout << "etc..." << endl;
    
    the reason you have that is that you don't use the main module and 
    call all event methods yourself but don't make the internal checks 
    yourself at the same time.
    
    Djam	 
    
    
    -- 
    Djamel Ouerdane ------------------------------------------o
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