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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkCompositeCellGridReader
* @brief Read a cell-grid file.
*
* vtkCompositeCellGridReader is a concrete subclass of
* vtkReaderAlgorithm that reads data into multiple vtkCellGrid instances.
*
* @sa
* vtkReaderAlgorithm
*/
#ifndef vtkCompositeCellGridReader_h
#define vtkCompositeCellGridReader_h
#include "vtkIOCellGridModule.h" // For export macro
#include "vtkReaderAlgorithm.h"
#include "vtkSmartPointer.h" // For SmartPointer
#include <string> // For std::string
#include <vector> // For std::vector
VTK_ABI_NAMESPACE_BEGIN
class vtkDataArraySelection;
class vtkFieldData;
class vtkCellGridDocumentLoader;
class vtkImageData;
class vtkStringArray;
class VTKIOCELLGRID_EXPORT vtkCompositeCellGridReader : public vtkReaderAlgorithm
{
public:
static vtkCompositeCellGridReader* New();
vtkTypeMacro(vtkCompositeCellGridReader, vtkReaderAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Set/Get the name of the file from which to read data.
*/
vtkSetFilePathMacro(FileName);
vtkGetFilePathMacro(FileName);
///@}
vtkDataArraySelection* GetCellTypeSelection();
vtkDataArraySelection* GetCellAttributeSelection();
/// Override GetMTime so we can indicate we are modified when
/// the cell-type or cell-attribute array-selections are modified.
vtkMTimeType GetMTime() override;
protected:
vtkCompositeCellGridReader();
~vtkCompositeCellGridReader() override;
int FillOutputPortInformation(int port, vtkInformation* info) override;
int ReadMetaData(vtkInformation* metadata) override;
int ReadMesh(int, int, int, int, vtkDataObject*) override;
int ReadPoints(int, int, int, int, vtkDataObject*) override;
int ReadArrays(int, int, int, int, vtkDataObject*) override;
bool UpdateMetadata();
struct FileGroup
{
std::vector<std::string> Files;
};
char* FileName = nullptr;
FileGroup Groups; // For now, the reader only supports a single group of files.
vtkNew<vtkDataArraySelection> CellTypeSelection;
vtkNew<vtkDataArraySelection> CellAttributeSelection;
struct MetadataGuard; // Used to double-buffer Groups, CellTypeSelection, and
// CellAttributeSelection.
vtkTimeStamp MetadataTime; // The last time metadata was read from disk
private:
vtkCompositeCellGridReader(const vtkCompositeCellGridReader&) = delete;
void operator=(const vtkCompositeCellGridReader&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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