Hi,
I've been trying unsuccessfully to get the tpm1 vertex using the
BrTPMTrackVertexModule. This worked about a month ago, but
now I'm not getting anything reasonable. By forcing a printout of
some of the diagnostic information, it looks like the problem is
with the LocalToGlobal transformation, which always returns
zero:
//sjs if(DebugLevel()>2){
cout<< "volume name:" << fFrontVolume->GetName() << endl;
cout<< "Vertex0: position" << FrontTrack_p->GetPos() << endl;
cout<< "Vertex0: alpha" << FrontTrack_p->GetSlope() << endl;
//sjs }
fFrontVolume->LocalToGlobal(FrontTrack_p->GetPos(),xg,0);
// fFrontVolume->LocalToGlobal(FrontTrack_p->GetAlpha(),ag,1);
fFrontVolume->LocalToGlobal(FrontTrack_p->GetSlope(),ag,1);
//sjs if(DebugLevel()>2){
cout<< "Vertex0: xg[0]" << xg[0] << endl;
cout<< "Vertex0: xg[1]" << xg[1] << endl;
cout<< "Vertex0: xg[2]" << xg[2] << endl;
cout<< "Vertex0: ag[0]" << ag[0] << endl;
cout<< "Vertex0: ag[1]" << ag[1] << endl;
cout<< "Vertex0: ag[2]" << ag[2] << endl;
//sjs }
results in the following output:
volume name:TPM1
Vertex0: position(-9.944769, -3.670153, 0.000000)
Vertex0: alpha(-0.237948, -0.030677, 0.970793)
Vertex0: xg[0]0.000000
Vertex0: xg[1]0.000000
Vertex0: xg[2]0.000000
Vertex0: ag[0]0.000000
Vertex0: ag[1]0.000000
Vertex0: ag[2]0.000000
Is anyone currently using this module for vertex determination? Any
ideas on what might
be the problem?
...steve
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