na49view.py

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## \file
## \ingroup tutorial_pyroot
## This macro generates two views of the NA49 detector.
##
## To have a better and dynamic view of any of these pads,
## you can click with the middle button of your mouse to select it.
## Then select "View with x3d" in the VIEW menu of the Canvas.
## Once in x3d, you are in wireframe mode by default.
## You can switch to:
##  - Hidden Line mode by typing E
##  - Solid mode by typing R
##  - Wireframe mode by typing W
##  - Stereo mode by clicking S (and you need special glasses)
##  - To leave x3d type Q
##
## \macro_code
##
## \author Wim Lavrijsen
 
import ROOT
 
c1 = ROOT.TCanvas( 'c1', 'The NA49 canvas', 200, 10, 700, 780 )
 
ROOT.gBenchmark.Start( 'na49view' )
 
all = ROOT.TPad( 'all', 'A Global view of NA49', 0.02, 0.02, 0.48, 0.82, 28 )
tof = ROOT.TPad( 'tof', 'One Time Of Flight element', 0.52, 0.02, 0.98, 0.82, 28 )
all.Draw();
tof.Draw();
na49title = ROOT.TPaveLabel( 0.04, 0.86, 0.96, 0.98, 'Two views of the NA49 detector' )
na49title.SetFillColor( 32 )
na49title.Draw()
#
nageom = ROOT.TFile( 'py-na49.root' )
n49 = ROOT.gROOT.FindObject( 'na49' )
n49.SetBomb( 1.2 )
n49.cd()     # Set current geometry
all.cd()     # Set current pad
n49.Draw()
c1.Update()
tof.cd()
TOFR1 = n49.GetNode( 'TOFR1' )
TOFR1.Draw()
c1.Update()
 
ROOT.gBenchmark.Show( 'na49view' )