include/Geant4/G4NormalNavigation.icc

0001 //
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0024 // ********************************************************************
0025 //
0026 // G4NormalNavigation Inline Implementation
0027 //
0028 // --------------------------------------------------------------------
0029
0030 // ********************************************************************
0031 // LevelLocate
0032 // ********************************************************************
0033 //
0034 inline
0035 G4bool
0036 G4NormalNavigation::LevelLocate( G4NavigationHistory& history,
0037                            const G4VPhysicalVolume* blockedVol,
0038                            const G4int,
0039                            const G4ThreeVector& globalPoint,
0040                            const G4ThreeVector* globalDirection,
0041                            const G4bool  pLocatedOnEdge,
0042                                  G4ThreeVector &localPoint )
0043 {
0044   G4VPhysicalVolume *targetPhysical, *samplePhysical;
0045   G4LogicalVolume *targetLogical;
0046   G4VSolid *sampleSolid;
0047   G4ThreeVector samplePoint;
0048   G4int targetNoDaughters;
0049
0050   targetPhysical = history.GetTopVolume();
0051   targetLogical = targetPhysical->GetLogicalVolume();
0052   targetNoDaughters = G4int(targetLogical->GetNoDaughters());
0053
0054   G4bool found = false;
0055
0056   if ( targetNoDaughters!=0 )
0057   {
0058     //
0059     // Search daughters in volume
0060     //
0061     for ( auto sampleNo=targetNoDaughters-1; sampleNo>=0; sampleNo-- )
0062     {
0063       samplePhysical = targetLogical->GetDaughter(sampleNo);
0064       if ( samplePhysical!=blockedVol )
0065       {
0066         // Setup history
0067         //
0068         history.NewLevel(samplePhysical, kNormal, samplePhysical->GetCopyNo());
0069         sampleSolid = samplePhysical->GetLogicalVolume()->GetSolid();
0070         samplePoint = history.GetTopTransform().TransformPoint(globalPoint);
0071         if( G4AuxiliaryNavServices::
0072             CheckPointOnSurface(sampleSolid, samplePoint, globalDirection,
0073                                 history.GetTopTransform(), pLocatedOnEdge) )
0074         {
0075           // Enter this daughter
0076           //
0077           localPoint = samplePoint;
0078           found = true;
0079           break;
0080         }
0081         history.BackLevel();
0082       }
0083     }
0084   }
0085   return found;
0086 }