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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkXMLStructuredDataReader
* @brief Superclass for structured data XML readers.
*
* vtkXMLStructuredDataReader provides functionality common to all
* structured data format readers.
*
* @sa
* vtkXMLImageDataReader vtkXMLStructuredGridReader
* vtkXMLRectilinearGridReader
*/
#ifndef vtkXMLStructuredDataReader_h
#define vtkXMLStructuredDataReader_h
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLDataReader.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKIOXML_EXPORT vtkXMLStructuredDataReader : public vtkXMLDataReader
{
public:
vtkTypeMacro(vtkXMLStructuredDataReader, vtkXMLDataReader);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Get the number of points in the output.
*/
vtkIdType GetNumberOfPoints() override;
/**
* Get the number of cells in the output.
*/
vtkIdType GetNumberOfCells() override;
///@{
/**
* Get/Set whether the reader gets a whole slice from disk when only
* a rectangle inside it is needed. This mode reads more data than
* necessary, but prevents many short reads from interacting poorly
* with the compression and encoding schemes.
*/
vtkSetMacro(WholeSlices, vtkTypeBool);
vtkGetMacro(WholeSlices, vtkTypeBool);
vtkBooleanMacro(WholeSlices, vtkTypeBool);
///@}
/**
* For the specified port, copy the information this reader sets up in
* SetupOutputInformation to outInfo
*/
void CopyOutputInformation(vtkInformation* outInfo, int port) override;
protected:
vtkXMLStructuredDataReader();
~vtkXMLStructuredDataReader() override;
virtual void SetOutputExtent(int* extent) = 0;
int ReadPrimaryElement(vtkXMLDataElement* ePrimary) override;
// Pipeline execute data driver. Called by vtkXMLReader.
void ReadXMLData() override;
void SetupOutputInformation(vtkInformation* outInfo) override;
// Internal representation of pieces in the file that may have come
// from a streamed write.
int* PieceExtents;
int* PiecePointDimensions;
vtkIdType* PiecePointIncrements;
int* PieceCellDimensions;
vtkIdType* PieceCellIncrements;
// Whether to read in whole slices mode.
vtkTypeBool WholeSlices;
// The update extent and corresponding increments and dimensions.
int UpdateExtent[6];
int PointDimensions[3];
int CellDimensions[3];
vtkIdType PointIncrements[3];
vtkIdType CellIncrements[3];
int WholeExtent[6];
// The extent currently being read.
int SubExtent[6];
int SubPointDimensions[3];
int SubCellDimensions[3];
// Override methods from superclass.
void SetupEmptyOutput() override;
void SetupPieces(int numPieces) override;
void DestroyPieces() override;
int ReadArrayForPoints(vtkXMLDataElement* da, vtkAbstractArray* outArray) override;
int ReadArrayForCells(vtkXMLDataElement* da, vtkAbstractArray* outArray) override;
// Internal utility methods.
int ReadPiece(vtkXMLDataElement* ePiece) override;
virtual int ReadSubExtent(int* inExtent, int* inDimensions, vtkIdType* inIncrements,
int* outExtent, int* outDimensions, vtkIdType* outIncrements, int* subExtent,
int* subDimensions, vtkXMLDataElement* da, vtkAbstractArray* array, FieldType type);
private:
vtkXMLStructuredDataReader(const vtkXMLStructuredDataReader&) = delete;
void operator=(const vtkXMLStructuredDataReader&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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