//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
// 
// Class G4ReplicaNavigation inline implementations
//
// Author: Paul Kent (CERN), August 1996
// --------------------------------------------------------------------

// ********************************************************************
// VoxelLocate
// ********************************************************************
//
inline
G4int
G4ReplicaNavigation::VoxelLocate( const G4SmartVoxelHeader* pHead,
                                  const G4ThreeVector& localPoint,
                                  const G4int blocked ) const
{
  EAxis targetHeaderAxis;
  G4double coord = 0.;
  G4double targetHeaderMin, targetHeaderMax;
  G4double targetHeaderNodeWidth, targetNodePos;
  G4int targetHeaderNoSlices, targetNodeNo;
  
  targetHeaderAxis = pHead->GetAxis();
  targetHeaderNoSlices = G4int(pHead->GetNoSlices());
  targetHeaderMin = pHead->GetMinExtent();
  targetHeaderMax = pHead->GetMaxExtent();
  targetHeaderNodeWidth = ( targetHeaderMax-targetHeaderMin )
                          / targetHeaderNoSlices;

  switch (targetHeaderAxis)
  {
    case kXAxis:
      coord = localPoint.x();
      break;
    case kYAxis:
      coord = localPoint.y();
      break;
    case kZAxis:
      coord = localPoint.z();
      break;
    case kRho:
      coord = localPoint.perp();
      break;
    case kPhi:
      coord = localPoint.phi();
      if ( (coord<0) && (coord<targetHeaderMin) ) { coord += CLHEP::twopi; }
      break;
    case kRadial3D:
    default:
      break;
  }
  targetNodePos = (coord-targetHeaderMin)/targetHeaderNodeWidth;
  targetNodeNo = (G4int) targetNodePos;

  if ( targetNodeNo==blocked )
  {
    targetNodeNo = (targetNodePos-targetNodeNo<0.5)
                   ? targetNodeNo-1 : targetNodeNo+1;
      
    // Do not need to check range: If on outer edge of zeroth
    // voxel & it is blocked => should have exited mother
    // (or similar)       P.Kent
    // assert(targetNodeNo>=0&&targetNodeNo<targetHeaderNoSlices);

    if( (targetNodeNo<0) || (targetNodeNo>=targetHeaderNoSlices) )
    {

#ifdef G4DEBUG_NAVIGATION
      std::ostringstream message; 
      message << "Voxel location failed:" << G4endl
              << " (targetNodeNo>=0&&targetNodeNo<targetHeaderNoSlices) "
              << G4endl
              << " - targetNodeNo= " << targetNodeNo << G4endl
              << " - Number of Slices =  " << targetHeaderNoSlices;
      G4Exception("G4ReplicaNavigation::VoxelLocate()",
                  "GeomNav1002", JustWarning, message);
#endif
      // In the case of rotational symmetry and an extent over the
      // whole 360 degrees, the above is not true and you can go from
      // the last voxel to the zeroth and vice versa
      //                                        H.Boie, April 30, 2001  
      if ( (targetHeaderAxis==kPhi)
           && (targetHeaderMin==0) && (targetHeaderMax==CLHEP::twopi) )
      {
        if ( targetNodeNo<0 )
        { 
          targetNodeNo = targetHeaderNoSlices-1;
        }
        else if ( targetNodeNo>=targetHeaderNoSlices )
        {
          targetNodeNo = 0;
        }
      }
      else 
      {
        if( targetNodeNo<0 )
        {
          targetNodeNo = 0;
        }
        else if ( targetNodeNo>=targetHeaderNoSlices )
        {
          targetNodeNo = targetHeaderNoSlices-1;
        }
      }
    }
  }
  else
  {
    // Rounding protection
    //
    if ( targetNodeNo<0 )
    {
      targetNodeNo = 0;
    }
    else if ( targetNodeNo>=targetHeaderNoSlices )
    {
      targetNodeNo = targetHeaderNoSlices-1;
    }
  }
  return targetNodeNo;
}

// ********************************************************************
// LevelLocate
// ********************************************************************
//
inline
G4bool
G4ReplicaNavigation::LevelLocate( G4NavigationHistory& history,
                            const G4VPhysicalVolume* blockedVol,
                            const G4int              blockedNum,
                            const G4ThreeVector&,     // globalPoint
                            const G4ThreeVector*,     // globalDirection
                            const G4bool,             // pLocatedOnEdge
                                  G4ThreeVector& localPoint )
{
  G4VPhysicalVolume *motherPhysical, *pPhysical;
  G4LogicalVolume *motherLogical;
  G4SmartVoxelHeader *motherVoxelHeader;
  G4int nodeNo;

  motherPhysical = history.GetTopVolume();
  motherLogical = motherPhysical->GetLogicalVolume();
  motherVoxelHeader = motherLogical->GetVoxelHeader();
  pPhysical = motherLogical->GetDaughter(0);

  if ( blockedVol==pPhysical )
  {
    nodeNo = VoxelLocate(motherVoxelHeader, localPoint, blockedNum);
  }
  else
  {
    nodeNo = VoxelLocate(motherVoxelHeader, localPoint);
  }

  ComputeTransformation(nodeNo, pPhysical, localPoint);
  history.NewLevel(pPhysical, kReplica, nodeNo);
  pPhysical->SetCopyNo(nodeNo); 

  return true;
}

// ********************************************************************
// SetPhiTransformation
// ********************************************************************
//
inline
void
G4ReplicaNavigation::SetPhiTransformation( const G4double ang,
                                                 G4VPhysicalVolume* pVol ) const
{
  G4RotationMatrix rm;
  rm.rotateZ(ang);
  if ( pVol != nullptr )
  {
    *pVol->GetRotation() = rm;
  }
}

// ********************************************************************
// GetVerboseLevel
// ********************************************************************
//
inline
G4int G4ReplicaNavigation::GetVerboseLevel() const
{
  return fVerbose;
}

// ********************************************************************
// SetVerboseLevel
// ********************************************************************
//
inline
void G4ReplicaNavigation::SetVerboseLevel(G4int level)
{
  fVerbose = level;
}

// ********************************************************************
// CheckMode
// ********************************************************************
//
inline
void G4ReplicaNavigation::CheckMode(G4bool mode)
{
  fCheck = mode;
}