/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkAMREnzoReaderInternal.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkAMREnzoReaderInternal.h -- Low-level Enzo Reader
//
// .SECTION Description
// Consists of the low-level Enzo Reader used by the vtkAMREnzoReader.
//
// .SECTION See Also
// vtkAMREnzoReader vtkAMREnzoParticlesReader

#ifndef VTKAMRENZOREADERINTERNAL_HPP_
#define VTKAMRENZOREADERINTERNAL_HPP_

#include "vtksys/SystemTools.hxx"

#include <vector> // for STL vector
#include <string> // for STL string
#include <cassert>       // for assert()

class vtkDataArray;
class vtkDataSet;

/*****************************************************************************
*
* Copyright (c) 2000 - 2009, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-400124
* All rights reserved.
*
* This file was adapted from the VisIt Enzo reader (avtEnzoFileFormat). For
* details, see https://visit.llnl.gov/.  The full copyright notice is contained
* in the file COPYRIGHT located at the root of the VisIt distribution or at
* http://www.llnl.gov/visit/copyright.html.
*
*****************************************************************************/

static std::string GetEnzoDirectory( const char* path )
{
  return( vtksys::SystemTools::GetFilenamePath( std::string(path) ) );
}


// ----------------------------------------------------------------------------
//                       Class vtkEnzoReaderBlock (begin)
// ----------------------------------------------------------------------------


class vtkEnzoReaderBlock
{
public:
  vtkEnzoReaderBlock()  { this->Init(); }
 ~vtkEnzoReaderBlock()  { this->Init(); }

  int                   Index;
  int                   Level;
  int                   ParentId;
  std::vector< int > ChildrenIds;

  int                   MinParentWiseIds[3];
  int                   MaxParentWiseIds[3];
  int                   MinLevelBasedIds[3];
  int                   MaxLevelBasedIds[3];

  int                   NumberOfParticles;
  int                   NumberOfDimensions;
  int                   BlockCellDimensions[3];
  int                   BlockNodeDimensions[3];

  double                MinBounds[3];
  double                MaxBounds[3];
  double                SubdivisionRatio[3];

  std::string        BlockFileName;
  std::string        ParticleFileName;

  void   Init();
  void GetParentWiseIds(  std::vector< vtkEnzoReaderBlock > & blocks  );
  void GetLevelBasedIds(  std::vector< vtkEnzoReaderBlock > & blocks  );
};


// ----------------------------------------------------------------------------
//                       Class vtkEnzoReaderBlock ( end )
// ----------------------------------------------------------------------------


// ----------------------------------------------------------------------------
//                     Class  vtkEnzoReaderInternal (begin)
// ----------------------------------------------------------------------------


class vtkEnzoReaderInternal
{
public:
  vtkEnzoReaderInternal();
 ~vtkEnzoReaderInternal();

  // number of all vtkDataSet (vtkImageData / vtkRectilinearGrid / vtkPolyData)
  // objects that have been SUCCESSFULLY extracted and inserted to the output
  // vtkMultiBlockDataSet (including rectilinear blocks and particle sets)
  int             NumberOfMultiBlocks;

  int             NumberOfDimensions;
  int             NumberOfLevels;
  int             NumberOfBlocks;
  int             ReferenceBlock;
  int             CycleIndex;
  char          * FileName;
  double          DataTime;
  vtkDataArray  * DataArray;
//  vtkAMREnzoReader * TheReader;

  std::string                       DirectoryName;
  std::string                       MajorFileName;
  std::string                       BoundaryFileName;
  std::string                       HierarchyFileName;
  std::vector< std::string >     BlockAttributeNames;
  std::vector< std::string >     ParticleAttributeNames;
  std::vector< std::string >     TracerParticleAttributeNames;
  std::vector< vtkEnzoReaderBlock > Blocks;

  void Init();
  void ReleaseDataArray();
  void SetFileName( char * fileName ) { this->FileName = fileName; }
  void ReadMetaData();
  void GetAttributeNames();
  void CheckAttributeNames();
  void ReadBlockStructures();
  void ReadGeneralParameters();
  void DetermineRootBoundingBox();
  int LoadAttribute( const char *attribute, int blockIdx );
  int GetBlockAttribute(
       const char* attribute, int blockIdx, vtkDataSet* pDataSet );
  std::string GetBaseDirectory(const char* path)
    {return GetEnzoDirectory(path); };


};




// ----------------------------------------------------------------------------
//                     Class  vtkEnzoReaderInternal ( end )
// ----------------------------------------------------------------------------

#endif /* VTKAMRENZOREADERINTERNAL_HPP_ */
// VTK-HeaderTest-Exclude: vtkAMREnzoReaderInternal.h
