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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkXMLUnstructuredDataReader.h,v $
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 vtkXMLUnstructuredDataReader - Superclass for unstructured data XML readers.
// .SECTION Description
// vtkXMLUnstructuredDataReader provides functionality common to all
// unstructured data format readers.
// .SECTION See Also
// vtkXMLPolyDataReader vtkXMLUnstructuredGridReader
#ifndef __vtkXMLUnstructuredDataReader_h
#define __vtkXMLUnstructuredDataReader_h
#include "vtkXMLDataReader.h"
class vtkCellArray;
class vtkIdTypeArray;
class vtkPointSet;
class vtkUnsignedCharArray;
class VTK_IO_EXPORT vtkXMLUnstructuredDataReader : public vtkXMLDataReader
{
public:
vtkTypeRevisionMacro(vtkXMLUnstructuredDataReader,vtkXMLDataReader);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the number of points in the output.
virtual vtkIdType GetNumberOfPoints();
// Description:
// Get the number of cells in the output.
virtual vtkIdType GetNumberOfCells();
// Description:
// Setup the reader as if the given update extent were requested by
// its output. This can be used after an UpdateInformation to
// validate GetNumberOfPoints() and GetNumberOfCells() without
// actually reading data.
void SetupUpdateExtent(int piece, int numberOfPieces, int ghostLevel);
// For the specified port, copy the information this reader sets up in
// SetupOutputInformation to outInfo
virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
protected:
vtkXMLUnstructuredDataReader();
~vtkXMLUnstructuredDataReader();
vtkPointSet* GetOutputAsPointSet();
vtkXMLDataElement* FindDataArrayWithName(vtkXMLDataElement* eParent,
const char* name);
vtkIdTypeArray* ConvertToIdTypeArray(vtkDataArray* a);
vtkUnsignedCharArray* ConvertToUnsignedCharArray(vtkDataArray* a);
// Pipeline execute data driver. Called by vtkXMLReader.
void ReadXMLData();
virtual void SetupEmptyOutput();
virtual void GetOutputUpdateExtent(int& piece, int& numberOfPieces,
int& ghostLevel)=0;
virtual void SetupOutputTotals();
virtual void SetupNextPiece();
void SetupPieces(int numPieces);
void DestroyPieces();
// Setup the output's information.
void SetupOutputInformation(vtkInformation *outInfo);
void SetupOutputData();
int ReadPiece(vtkXMLDataElement* ePiece);
int ReadPieceData();
int ReadCellArray(vtkIdType numberOfCells, vtkIdType totalNumberOfCells,
vtkXMLDataElement* eCells, vtkCellArray* outCells);
// Read a data array whose tuples coorrespond to points.
int ReadArrayForPoints(vtkXMLDataElement* da, vtkDataArray* outArray);
// Get the number of points/cells in the given piece. Valid after
// UpdateInformation.
virtual vtkIdType GetNumberOfPointsInPiece(int piece);
virtual vtkIdType GetNumberOfCellsInPiece(int piece)=0;
// The update request.
int UpdatePiece;
int UpdateNumberOfPieces;
int UpdateGhostLevel;
// The range of pieces from the file that will form the UpdatePiece.
int StartPiece;
int EndPiece;
vtkIdType TotalNumberOfPoints;
vtkIdType TotalNumberOfCells;
vtkIdType StartPoint;
// The Points element for each piece.
vtkXMLDataElement** PointElements;
vtkIdType* NumberOfPoints;
int PointsTimeStep;
unsigned long PointsOffset;
int PointsNeedToReadTimeStep(vtkXMLDataElement *eNested);
int CellsNeedToReadTimeStep(vtkXMLDataElement *eNested, int &cellstimestep,
unsigned long &cellsoffset);
private:
vtkXMLUnstructuredDataReader(const vtkXMLUnstructuredDataReader&); // Not implemented.
void operator=(const vtkXMLUnstructuredDataReader&); // Not implemented.
};
#endif
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