include/Geant4/G4ParameterisedNavigation.icc

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0024 // ********************************************************************
0025 //
0026 // Class G4ParameterisedNavigation Inline implementation
0027 //
0028 // Author: Paul Kent (CERN), August 1996
0029 // --------------------------------------------------------------------
0030
0031 // ********************************************************************
0032 // IdentifyAndPlaceSolid
0033 // ********************************************************************
0034 //
0035 inline G4VSolid* G4ParameterisedNavigation::
0036 IdentifyAndPlaceSolid( G4int num,
0037                        G4VPhysicalVolume* apparentPhys, // PhysV or PhysT
0038                        G4VPVParameterisation* curParam  )
0039 {
0040   G4VSolid *sampleSolid;
0041
0042   sampleSolid = curParam->ComputeSolid(num, apparentPhys);
0043   sampleSolid->ComputeDimensions(curParam, num, apparentPhys);
0044   curParam->ComputeTransformation(num, apparentPhys);
0045
0046   return sampleSolid;
0047 }
0048
0049 // ********************************************************************
0050 // ParamVoxelLocate
0051 // ********************************************************************
0052 //
0053 inline G4SmartVoxelNode*
0054 G4ParameterisedNavigation::ParamVoxelLocate( G4SmartVoxelHeader* pHead,
0055                                        const G4ThreeVector& localPoint )
0056 {
0057   // If no parameterisation axis is specified, adopt default
0058   // location strategy as for placements
0059   //
0060   if ( pHead->GetParamAxis()==kUndefined )
0061   {
0062     fVoxelNode = G4VoxelNavigation::VoxelLocate(pHead,localPoint);
0063   }
0064   else
0065   {
0066     G4double targetHeaderMin, targetHeaderNodeWidth;
0067     G4int targetHeaderNoSlices, targetNodeNo;
0068     EAxis targetHeaderAxis;
0069
0070     targetHeaderAxis = pHead->GetAxis();
0071     targetHeaderNoSlices = G4int(pHead->GetNoSlices());
0072     targetHeaderMin = pHead->GetMinExtent();
0073     targetHeaderNodeWidth = (pHead->GetMaxExtent()-targetHeaderMin)
0074                           / targetHeaderNoSlices;
0075     targetNodeNo = G4int ( (localPoint(targetHeaderAxis)-targetHeaderMin)
0076                            / targetHeaderNodeWidth );
0077     // Rounding protection
0078     //
0079     if ( targetNodeNo<0 )
0080     {
0081       targetNodeNo = 0;
0082     }
0083     else if ( targetNodeNo>=targetHeaderNoSlices )
0084     {
0085       targetNodeNo = targetHeaderNoSlices-1;
0086     }
0087     fVoxelAxis = targetHeaderAxis;
0088     fVoxelNoSlices = targetHeaderNoSlices;
0089     fVoxelSliceWidth = targetHeaderNodeWidth;
0090     fVoxelNodeNo = targetNodeNo;
0091     fVoxelHeader = pHead;
0092     fVoxelNode = pHead->GetSlice(targetNodeNo)->GetNode();
0093   }
0094   return fVoxelNode;
0095 }
0096