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//
// $Id: G4ParameterisedNavigation.icc,v 1.7 2007/11/09 16:06:02 gcosmo Exp $
// GEANT4 tag $Name: geant4-09-04-beta-01 $
//
// 
// class G4ParameterisedNavigation Inline implementation
//
// --------------------------------------------------------------------

// ********************************************************************
// IdentifyAndPlaceSolid
// ********************************************************************
//
inline
G4VSolid* G4ParameterisedNavigation::
IdentifyAndPlaceSolid( G4int num,
                       G4VPhysicalVolume *apparentPhys, // PhysV or PhysT
                       G4VPVParameterisation *curParam  )
{
  G4VSolid *sampleSolid; 

  sampleSolid = curParam->ComputeSolid(num, apparentPhys);
  sampleSolid->ComputeDimensions(curParam, num, apparentPhys);
  curParam->ComputeTransformation(num, apparentPhys);

  return sampleSolid; 
}

// ********************************************************************
// ParamVoxelLocate
// ********************************************************************
//
inline
G4SmartVoxelNode*
G4ParameterisedNavigation::ParamVoxelLocate( G4SmartVoxelHeader* pHead,
                                       const G4ThreeVector& localPoint )
{
  // If no parameterisation axis is specified, adopt default
  // location strategy as for placements
  //  
  if ( pHead->GetParamAxis()==kUndefined )
  {
    fVoxelNode = G4VoxelNavigation::VoxelLocate(pHead,localPoint);
  }
  else
  {
    G4double targetHeaderMin, targetHeaderNodeWidth;
    G4int targetHeaderNoSlices, targetNodeNo;
    EAxis targetHeaderAxis;

    targetHeaderAxis = pHead->GetAxis();
    targetHeaderNoSlices = pHead->GetNoSlices();
    targetHeaderMin = pHead->GetMinExtent();
    targetHeaderNodeWidth = (pHead->GetMaxExtent()-targetHeaderMin)
                          / targetHeaderNoSlices;
    targetNodeNo = G4int ( (localPoint(targetHeaderAxis)-targetHeaderMin)
                           / targetHeaderNodeWidth );
    // Rounding protection
    //
    if ( targetNodeNo<0 )
    {
      targetNodeNo = 0;
    }
    else if ( targetNodeNo>=targetHeaderNoSlices )
         {
           targetNodeNo = targetHeaderNoSlices-1;
         }
    fVoxelAxis = targetHeaderAxis;
    fVoxelNoSlices = targetHeaderNoSlices;
    fVoxelSliceWidth = targetHeaderNodeWidth;
    fVoxelNodeNo = targetNodeNo;
    fVoxelHeader = pHead;    
    fVoxelNode = pHead->GetSlice(targetNodeNo)->GetNode();
  }
  return fVoxelNode;
}