Hi ROOTers
The following macro is supposed to open a root file, and then display
sequentially one
after the other the 3D histograms in the file, as a film (it's supposed
to show a collision
between two "nuclei").
Unfortunately, after the first four or five "frames" execution slows
down until the while
PC comes to a grinding halt.
Can anybody tell me why ?
Cheers
John.
PS. I use ROOT 3.03.05 on an i686 PC running RedHat 7.3
klassFilm.C:
{
#include <stdlib.h>
#include <fstream.h>
gROOT->Reset();
TCanvas *c1 = new TCanvas("c1","klassik film",600,600);
gStyle->SetOptStat(kFALSE);
TFile *f;
char fnom[]="klassik_5000_b3.root";
char name[10]; TH3D *h1;
int tplot=0;
sprintf(name,"Pxyz%d",tplot);
f=new TFile(fnom);
while( (h1 = (TH3D*)f->Get(name)) )
{
// projectile nucleons
h1->SetMarkerStyle(24);
h1->SetMarkerColor(2);
h1->SetMarkerSize(1);
h1->Draw();
// target nucleons
sprintf(name,"Txyz%d",tplot);
h1 = (TH3D*)f->Get(name);
h1->SetMarkerStyle(24);
h1->SetMarkerColor(4);
h1->SetMarkerSize(1);
h1->Draw("same");
c1->Update();
// cycle on
tplot+=5;
sprintf(name,"Pxyz%d",tplot);
}
}
--
Dr. J.D. Frankland
Grand Accelérateur National d'Ions Lourds
Boulevard Henri Bécquerel
B.P. 55027
14076 CAEN Cedex 05
tél.: +33 (0)231454628
fax: +33 (0)231454665
mél: frankland@ganil.fr
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