Geant4  10.00.p03
G4ParameterisedNavigation.icc
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27 // $Id: G4ParameterisedNavigation.icc 66356 2012-12-18 09:02:32Z gcosmo $
28 //
29 //
30 // class G4ParameterisedNavigation Inline implementation
31 //
32 // --------------------------------------------------------------------
33 
34 // ********************************************************************
35 // IdentifyAndPlaceSolid
36 // ********************************************************************
37 //
38 inline
39 G4VSolid* G4ParameterisedNavigation::
40 IdentifyAndPlaceSolid( G4int num,
41  G4VPhysicalVolume *apparentPhys, // PhysV or PhysT
42  G4VPVParameterisation *curParam )
43 {
44  G4VSolid *sampleSolid;
45 
46  sampleSolid = curParam->ComputeSolid(num, apparentPhys);
47  sampleSolid->ComputeDimensions(curParam, num, apparentPhys);
48  curParam->ComputeTransformation(num, apparentPhys);
49 
50  return sampleSolid;
51 }
52 
53 // ********************************************************************
54 // ParamVoxelLocate
55 // ********************************************************************
56 //
57 inline
58 G4SmartVoxelNode*
59 G4ParameterisedNavigation::ParamVoxelLocate( G4SmartVoxelHeader* pHead,
60  const G4ThreeVector& localPoint )
61 {
62  // If no parameterisation axis is specified, adopt default
63  // location strategy as for placements
64  //
65  if ( pHead->GetParamAxis()==kUndefined )
66  {
67  fVoxelNode = G4VoxelNavigation::VoxelLocate(pHead,localPoint);
68  }
69  else
70  {
71  G4double targetHeaderMin, targetHeaderNodeWidth;
72  G4int targetHeaderNoSlices, targetNodeNo;
73  EAxis targetHeaderAxis;
74 
75  targetHeaderAxis = pHead->GetAxis();
76  targetHeaderNoSlices = pHead->GetNoSlices();
77  targetHeaderMin = pHead->GetMinExtent();
78  targetHeaderNodeWidth = (pHead->GetMaxExtent()-targetHeaderMin)
79  / targetHeaderNoSlices;
80  targetNodeNo = G4int ( (localPoint(targetHeaderAxis)-targetHeaderMin)
81  / targetHeaderNodeWidth );
82  // Rounding protection
83  //
84  if ( targetNodeNo<0 )
85  {
86  targetNodeNo = 0;
87  }
88  else if ( targetNodeNo>=targetHeaderNoSlices )
89  {
90  targetNodeNo = targetHeaderNoSlices-1;
91  }
92  fVoxelAxis = targetHeaderAxis;
93  fVoxelNoSlices = targetHeaderNoSlices;
94  fVoxelSliceWidth = targetHeaderNodeWidth;
95  fVoxelNodeNo = targetNodeNo;
96  fVoxelHeader = pHead;
97  fVoxelNode = pHead->GetSlice(targetNodeNo)->GetNode();
98  }
99  return fVoxelNode;
100 }
101