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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.
=========================================================================*/
/**
* @class vtkXMLHyperOctreeReader
* @brief Read VTK XML HyperOctree files.
*
* vtkXMLHyperOctreeReader reads the VTK XML HyperOctree file
* format. One rectilinear grid file can be read to produce one
* output. Streaming is supported. The standard extension for this
* reader's file format is "vto". This reader is also used to read a
* single piece of the parallel file format.
*
* @sa
* vtkXMLPHyperOctreeReader
*/
#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) VTK_OVERRIDE;
static vtkXMLHyperOctreeReader *New();
//@{
/**
* Get the reader's output.
*/
vtkHyperOctree *GetOutput();
vtkHyperOctree *GetOutput(int idx);
//@}
protected:
vtkXMLHyperOctreeReader();
~vtkXMLHyperOctreeReader() VTK_OVERRIDE;
const char* GetDataSetName() VTK_OVERRIDE;
// Setup the output with no data available. Used in error cases.
void SetupEmptyOutput() VTK_OVERRIDE;
// Declare that this reader produces HyperOctrees
int FillOutputPortInformation(int, vtkInformation*) VTK_OVERRIDE;
//These defer to the HyperOctree output.
vtkIdType GetNumberOfPoints() VTK_OVERRIDE;
vtkIdType GetNumberOfCells() VTK_OVERRIDE;
// Overridden here to do allocation.
int ReadArrayForPoints(vtkXMLDataElement* da,
vtkAbstractArray* outArray) VTK_OVERRIDE;
int ReadArrayForCells(vtkXMLDataElement* da,
vtkAbstractArray* outArray) VTK_OVERRIDE;
// The most important stuff is here.
// Read the rest of the file and create the HyperOctree.
void ReadXMLData() VTK_OVERRIDE;
// 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&) VTK_DELETE_FUNCTION;
void operator=(const vtkXMLHyperOctreeReader&) VTK_DELETE_FUNCTION;
};
#endif
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