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Reference Guide
na49geomfile.C File Reference
Tutorials » Geometry tutorials

Detailed Description

Before executing this macro, the file makegeometry.C must have been executed.

void na49geomfile() {
gBenchmark->Start("geometry");
TGeometry *n49 =(TGeometry*)gROOT->FindObject("na49");
if (n49) {
TFile na("na49.root","RECREATE");
n49->Write();
na.Write();
}
gBenchmark->Show("geometry");
}
gBenchmark
R__EXTERN TBenchmark * gBenchmark
Definition: TBenchmark.h:59
gROOT
#define gROOT
Definition: TROOT.h:414
TBenchmark::Start
virtual void Start(const char *name)
Starts Benchmark with the specified name.
Definition: TBenchmark.cxx:174
TBenchmark::Show
virtual void Show(const char *name)
Stops Benchmark name and Prints results.
Definition: TBenchmark.cxx:157
TFile
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition: TFile.h:48
TGeometry
TGeometry description.
Definition: TGeometry.h:39
TObject::Write
virtual Int_t Write(const char *name=0, Int_t option=0, Int_t bufsize=0)
Write this object to the current directory.
Definition: TObject.cxx:785
Author
Andrei Gheata

Definition in file na49geomfile.C.