Hello there,
I am not that much of a C++ programmer yet, so this might be a silly
question, but:
I am using some CLHEP classes and have tried to store them in a TTree.
Although the following code is compiling (g++) and running
Hep3Vector *p = new Hep3Vector(mtrIt->px,mtrIt->py,mtrIt->pz) ;
if (branch) branch->SetAddress(p) ;
else branch = tree->Branch("momentum", "Hep3Vector",0,64000,1) ;
tree->Fill() ;
(where mtrIt is an iterator over an (Hera-B) Arte table and Hep3Vector
is a CLHEP class name), I don't have a clue if it is legal. In root, I can
open the TFile and TTree.GetEntries() returns the right number of events,
but I haven't managed to read the "Hep3Vector".
According to the TTree class description, storing objects in a tree only
works for objects inherited from TObject. Then, why does my code run
and how should I build the CLHEP classes, such that they are
inherited from TObject, in a proper (OO) way?
Thanks, regards, Wouter
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