ECCE @ EIC Software
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
G4PhysicalVolumeMassScene.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4PhysicalVolumeMassScene.cc
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 //
28 //
29 // John Allison 10th August 1998.
30 // An artificial scene to find physical volumes.
31 
33 
34 #include "G4VSolid.hh"
35 #include "G4Vector3D.hh"
36 #include "G4PhysicalVolumeModel.hh"
37 #include "G4LogicalVolume.hh"
38 #include "G4Polyhedron.hh"
39 #include "G4Material.hh"
40 #include "G4VPVParameterisation.hh"
41 #include "G4UnitsTable.hh"
42 
45  fpPVModel (pPVModel),
46  fVolume (0.),
47  fMass (0.),
48  fpLastPV (0),
49  fPVPCount (0),
50  fLastDepth (0),
51  fLastDensity (0.)
52 {}
53 
55 
57 {
58  fVolume = 0.;
59  fMass = 0.;
60  fpLastPV = 0;
61  fPVPCount = 0;
62  fLastDepth = 0;
63  fLastDensity = 0.;
64  fDensityStack.clear();
65 }
66 
68 {
69  G4int currentDepth = fpPVModel->GetCurrentDepth();
70  G4VPhysicalVolume* pCurrentPV = fpPVModel->GetCurrentPV();
71  //G4LogicalVolume* pCurrentLV = fpPVModel->GetCurrentLV();
72  G4Material* pCurrentMaterial = fpPVModel->GetCurrentMaterial();
73 
74  if (pCurrentPV != fpLastPV) {
75  fpLastPV = pCurrentPV;
76  fPVPCount = 0;
77  }
78 
79  G4double currentVolume = ((G4VSolid&)solid).GetCubicVolume();
80  G4double currentDensity = pCurrentMaterial? pCurrentMaterial->GetDensity() : 0.;
81  /* Using G4Polyhedron... (gives slightly different answers on Tubs, e.g.).
82  G4Polyhedron* pPolyhedron = solid.GetPolyhedron();
83  if (!pPolyhedron) {
84  G4cout <<
85  "G4PhysicalVolumeMassScene::AccrueMass: WARNING:"
86  "\n No G4Polyhedron for" << solid.GetEntityType() <<
87  ". \"" << solid.GetName() << "\" will not be accounted."
88  "\n It will be as though not there, i.e., the density as its mother."
89  "\n Its daughters will still be found and accounted."
90  << G4endl;
91  currentVolume = 0.;
92  currentDensity = 0.;
93  }
94  */
95 
96  if (currentDepth == 0) fVolume = currentVolume;
97 
98  if (currentDepth > fLastDepth) {
99  fDensityStack.push_back (fLastDensity);
100  } else if (currentDepth < fLastDepth) {
101  fDensityStack.pop_back();
102  }
103  fLastDepth = currentDepth;
104  fLastDensity = currentDensity;
105  G4double motherDensity = 0.;
106  if (currentDepth > 0) motherDensity = fDensityStack.back();
107 
108  G4double subtractedMass = currentVolume * motherDensity;
109  G4double addedMass = currentVolume * currentDensity;
110  fMass -= subtractedMass;
111  fMass += addedMass;
112  /* Debug
113  G4cout << "current vol = "
114  << G4BestUnit (currentVolume,"Volume")
115  << ", current density = "
116  << G4BestUnit (currentDensity, "Volumic Mass")
117  << ", mother density = "
118  << G4BestUnit (motherDensity, "Volumic Mass")
119  << G4endl;
120  G4cout << "Subtracted mass = " << G4BestUnit (subtractedMass, "Mass")
121  << ", added mass = " << G4BestUnit (addedMass, "Mass")
122  << ", new mass = " << G4BestUnit (fMass, "Mass")
123  << G4endl;
124  */
125  if (fMass < 0.) {
126  G4cout <<
127  "G4PhysicalVolumeMassScene::AccrueMass: WARNING:"
128  "\n Mass going negative for \""
129  << pCurrentPV->GetName() <<
130  "\", copy "
131  << pCurrentPV->GetCopyNo() <<
132  ". Larger than mother?"
133  << G4endl;
134  }
135 }