vtkXMLHyperOctreeReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkXMLHyperOctreeReader.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.
 
=========================================================================*/
#ifndef vtkXMLHyperOctreeReader_h
#define vtkXMLHyperOctreeReader_h
 
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLDataReader.h"
 
class vtkHyperOctree;
class vtkHyperOctreeCursor;
class vtkIntArray;
 
class VTKIOXML_EXPORT vtkXMLHyperOctreeReader : public vtkXMLDataReader
{
public:
  vtkTypeMacro(vtkXMLHyperOctreeReader,vtkXMLDataReader);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkXMLHyperOctreeReader *New();
 
 
  vtkHyperOctree *GetOutput();
  vtkHyperOctree *GetOutput(int idx);
 
protected:
  vtkXMLHyperOctreeReader();
  ~vtkXMLHyperOctreeReader();
 
  const char* GetDataSetName();
 
  // Setup the output with no data available.  Used in error cases.
  void SetupEmptyOutput();
 
  // Declare that this reader produces HyperOctrees
  virtual int FillOutputPortInformation(int, vtkInformation*);
 
  //These defer to the HyperOctree output.
  vtkIdType GetNumberOfPoints();
  vtkIdType GetNumberOfCells();
 
  // Overriden here to do allocation.
  virtual int ReadArrayForPoints(vtkXMLDataElement* da,
                                 vtkAbstractArray* outArray);
  virtual int ReadArrayForCells(vtkXMLDataElement* da,
                                vtkAbstractArray* outArray);
 
 
 
  // The most important stuff is here.
  // Read the rest of the file and create the HyperOctree.
  void ReadXMLData();
 
  // Recover the structure of the HyperOctree, used by ReadXMLData.
  void ReadTopology(vtkXMLDataElement *elem);
 
  // Used by ReadTopology to recusively build the tree, one cell at a time.
  int BuildNextCell(vtkIntArray *, vtkHyperOctreeCursor *, int);
 
  //Helper for BuildNextCell
  int ArrayIndex;
 
private:
  vtkXMLHyperOctreeReader(const vtkXMLHyperOctreeReader&);  // Not implemented.
  void operator=(const vtkXMLHyperOctreeReader&);  // Not implemented.
};
 
#endif