Logo ROOT   6.08/07
Reference Guide
na49view.C
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1 /// \file
2 /// \ingroup tutorial_geom
3 /// This macro generates
4 /// with 2 views of the NA49 detector using the old obsolete geometry package.
5 ///
6 /// \macro_code
7 ///
8 /// \author Rene Brun
9 
10 void na49view() {
11  TCanvas *c1 = new TCanvas("c1","The NA49 canvas",200,10,700,780);
12 
13  gBenchmark->Start("na49view");
14 
15  TPad *all = new TPad("all","A Global view of NA49",0.02,0.02,0.48,0.82,28);
16  TPad *tof = new TPad("tof","One Time Of Flight element",0.52,0.02,0.98,0.82,28);
17  all->Draw();
18  tof->Draw();
19  TPaveLabel *na49title = new TPaveLabel(0.04,0.86,0.96,0.98,"Two views of the NA49 detector");
20  na49title->SetFillColor(32);
21  na49title->Draw();
22  //
23  TFile *nageom = new TFile("na49.root");
24  if (!nageom || nageom->IsZombie()) return;
25  TGeometry *n49 =(TGeometry*)gROOT->FindObject("na49");
26  n49->SetBomb(1.2);
27  n49->cd(); //Set current geometry
28  all->cd(); //Set current pad
29  n49->Draw();
30  c1->Update();
31  tof->cd();
32  TNode *TOFR1 = n49->GetNode("TOFR1");
33  TOFR1->Draw();
34  c1->Update();
35 
36  gBenchmark->Show("na49view");
37 
38  // To have a better and dynamic view of any of these pads,
39  // you can click with the middle button of your mouse to select it.
40  // Then select "View with x3d" in the VIEW menu of the Canvas.
41  // Once in x3d, you are in wireframe mode by default.
42  // You can switch to:
43  // - Hidden Line mode by typing E
44  // - Solid mode by typing R
45  // - Wireframe mode by typing W
46  // - Stereo mode by clicking S (and you need special glasses)
47  // - To leave x3d type Q
48 }
virtual void Draw(Option_t *option="")
Draw Referenced node with current parameters.
Definition: TNode.cxx:323
return c1
Definition: legend1.C:41
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format...
Definition: TFile.h:50
TNode description.
Definition: TNode.h:43
#define gROOT
Definition: TROOT.h:364
virtual void Show(const char *name)
Stops Benchmark name and Prints results.
Definition: TBenchmark.cxx:157
TVirtualPad * cd(Int_t subpadnumber=0)
Set Current pad.
Definition: TPad.cxx:526
virtual void Start(const char *name)
Starts Benchmark with the specified name.
Definition: TBenchmark.cxx:174
virtual void Draw(Option_t *option="")
Draw Pad in Current pad (re-parent pad if necessary).
Definition: TPad.cxx:1208
TGeometry description.
Definition: TGeometry.h:43
A Pave (see TPave) with a text centered in the Pave.
Definition: TPaveLabel.h:24
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:42
R__EXTERN TBenchmark * gBenchmark
Definition: TBenchmark.h:63
The most important graphics class in the ROOT system.
Definition: TPad.h:37
virtual void Draw(Option_t *option="")
Draw this Geometry.
Definition: TGeometry.cxx:254
The Canvas class.
Definition: TCanvas.h:41
TNode * GetNode(const char *name) const
Return pointer to node with name in the geometry tree.
Definition: TGeometry.cxx:345
virtual void Draw(Option_t *option="")
Draw this pavelabel with its current attributes.
Definition: TPaveLabel.cxx:77
Bool_t IsZombie() const
Definition: TObject.h:120
virtual void SetBomb(Float_t bomb=1.4)
Definition: TGeometry.h:106
virtual void cd(const char *path=0)
Change Current Geometry to this.
Definition: TGeometry.cxx:246
virtual void Update()
Update canvas pad buffers.
Definition: TCanvas.cxx:2183