Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/navigation/include/G4ParameterisedNavigation.icc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
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  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.                             *
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 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
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 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
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 24 // ********************************************************************
 25 // 
 26 // class G4ParameterisedNavigation Inline implementation
 27 //
 28 // --------------------------------------------------------------------
 29 
 30 // ********************************************************************
 31 // IdentifyAndPlaceSolid
 32 // ********************************************************************
 33 //
 34 inline G4VSolid* G4ParameterisedNavigation::
 35 IdentifyAndPlaceSolid( G4int num,
 36                        G4VPhysicalVolume *apparentPhys, // PhysV or PhysT
 37                        G4VPVParameterisation *curParam  )
 38 {
 39   G4VSolid *sampleSolid; 
 40 
 41   sampleSolid = curParam->ComputeSolid(num, apparentPhys);
 42   sampleSolid->ComputeDimensions(curParam, num, apparentPhys);
 43   curParam->ComputeTransformation(num, apparentPhys);
 44 
 45   return sampleSolid; 
 46 }
 47 
 48 // ********************************************************************
 49 // ParamVoxelLocate
 50 // ********************************************************************
 51 //
 52 inline G4SmartVoxelNode*
 53 G4ParameterisedNavigation::ParamVoxelLocate( G4SmartVoxelHeader* pHead,
 54                                        const G4ThreeVector& localPoint )
 55 {
 56   // If no parameterisation axis is specified, adopt default
 57   // location strategy as for placements
 58   //  
 59   if ( pHead->GetParamAxis()==kUndefined )
 60   {
 61     fVoxelNode = G4VoxelNavigation::VoxelLocate(pHead,localPoint);
 62   }
 63   else
 64   {
 65     G4double targetHeaderMin, targetHeaderNodeWidth;
 66     G4int targetHeaderNoSlices, targetNodeNo;
 67     EAxis targetHeaderAxis;
 68 
 69     targetHeaderAxis = pHead->GetAxis();
 70     targetHeaderNoSlices = G4int(pHead->GetNoSlices());
 71     targetHeaderMin = pHead->GetMinExtent();
 72     targetHeaderNodeWidth = (pHead->GetMaxExtent()-targetHeaderMin)
 73                           / targetHeaderNoSlices;
 74     targetNodeNo = G4int ( (localPoint(targetHeaderAxis)-targetHeaderMin)
 75                            / targetHeaderNodeWidth );
 76     // Rounding protection
 77     //
 78     if ( targetNodeNo<0 )
 79     {
 80       targetNodeNo = 0;
 81     }
 82     else if ( targetNodeNo>=targetHeaderNoSlices )
 83     {
 84       targetNodeNo = targetHeaderNoSlices-1;
 85     }
 86     fVoxelAxis = targetHeaderAxis;
 87     fVoxelNoSlices = targetHeaderNoSlices;
 88     fVoxelSliceWidth = targetHeaderNodeWidth;
 89     fVoxelNodeNo = targetNodeNo;
 90     fVoxelHeader = pHead;    
 91     fVoxelNode = pHead->GetSlice(targetNodeNo)->GetNode();
 92   }
 93   return fVoxelNode;
 94 }
 95 
 96