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DisplayOn.C
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1 #pragma once
2 #if ROOT_VERSION_CODE >= ROOT_VERSION(6,00,0)
4 #include <g4main/PHG4Reco.h>
5 #endif
6 // stupid macro to turn on the geant4 display
7 // we ask Fun4All for a pointer to PHG4Reco
8 // using the ApplyCommand will start up the
9 // G4 cmd interpreter and graphics system
10 // the vis.mac contains the necessary commands to
11 // start up the visualization, the next event will
12 // be displayed. Do not execute this macro
13 // before PHG4Reco was registered with Fun4All
14 PHG4Reco * DisplayOn(const char *mac = "block.mac")
15 {
16  char cmd[100];
18  PHG4Reco *g4 = (PHG4Reco *) se->getSubsysReco("PHG4RECO");
19  g4->InitRun(se->topNode());
20  g4->ApplyDisplayAction();
21  sprintf(cmd, "/control/execute %s", mac);
22  g4->ApplyCommand(cmd);
23  return g4;
24 }
25 // print out the commands I always forget
26 void displaycmd()
27 {
28  cout << "draw axis: " << endl;
29  cout << " g4->ApplyCommand(\"/vis/scene/add/axes 0 0 0 50 cm\")" << endl;
30  cout << "zoom" << endl;
31  cout << " g4->ApplyCommand(\"/vis/viewer/zoom 1\")" << endl;
32  cout << "viewpoint:" << endl;
33  cout << " g4->ApplyCommand(\"/vis/viewer/set/viewpointThetaPhi 0 0\")" << endl;
34  cout << "panTo:" << endl;
35  cout << " g4->ApplyCommand(\"/vis/viewer/panTo 0 0 cm\")" << endl;
36  cout << "print to eps:" << endl;
37  cout << " g4->ApplyCommand(\"/vis/ogl/printEPS\")" << endl;
38  cout << "set background color:" << endl;
39  cout << " g4->ApplyCommand(\"/vis/viewer/set/background white\")" << endl;
40 }
41 
43 {
45  PHG4ParticleGun *pgun = (PHG4ParticleGun *) se->getSubsysReco("PGUN");
46  return pgun;
47 }