vtkXMLHyperTreeGridWriter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkXMLHyperTreeGridWriter_h
#define vtkXMLHyperTreeGridWriter_h
 
#include "vtkIOXMLModule.h"  // For export macro
#include "vtkSmartPointer.h" // For internal attributes
#include "vtkXMLWriter.h"
 
#include <vector> // std::vector
 
VTK_ABI_NAMESPACE_BEGIN
class OffsetsManagerGroup;
class OffsetsManagerArray;
class vtkBitArray;
class vtkIdList;
class vtkHyperTree;
class vtkHyperTreeGrid;
class vtkHyperTreeGridNonOrientedCursor;
class vtkTypeInt64Array;
class vtkTypeUInt32Array;
 
class VTKIOXML_EXPORT vtkXMLHyperTreeGridWriter : public vtkXMLWriter
{
public:
  vtkTypeMacro(vtkXMLHyperTreeGridWriter, vtkXMLWriter);
  void PrintSelf(ostream& os, vtkIndent indent) override;
  static vtkXMLHyperTreeGridWriter* New();
 
  vtkHyperTreeGrid* GetInput();
 
  const char* GetDefaultFileExtension() override;
 
  vtkSetMacro(DataSetMajorVersion, int);
  vtkSetMacro(DataSetMinorVersion, int);
 
protected:
  vtkXMLHyperTreeGridWriter();
  ~vtkXMLHyperTreeGridWriter() override;
 
  const char* GetDataSetName() override;
 
  int GetDataSetMajorVersion() override { return DataSetMajorVersion; }
  int GetDataSetMinorVersion() override { return DataSetMinorVersion; }
 
  // Specify that we require HyperTreeGrid input
  int FillInputPortInformation(int port, vtkInformation* info) override;
 
  // The most important method, make the XML file for my input.
  int WriteData() override;
 
  // <HyperTreeGrid ...
  int StartPrimaryElement(vtkIndent);
 
  // ... dim, size, origin>
  void WritePrimaryElementAttributes(ostream&, vtkIndent) override;
 
  // Grid coordinates and mask
  int WriteGrid(vtkIndent);
 
  // Tree Descriptor and  CellData
  int WriteTrees_0(vtkIndent);
  int WriteTrees_1(vtkIndent);
  int WriteTrees_2(vtkIndent);
 
  // </HyperTreeGrid>
  int FinishPrimaryElement(vtkIndent);
 
  // Descriptors for individual hypertrees
  std::vector<vtkSmartPointer<vtkBitArray>> Descriptors;
 
  // Descriptors for individual hypertrees
  std::vector<vtkSmartPointer<vtkTypeInt64Array>> NbVerticesByLevels;
 
  // Masks for individual hypertrees
  std::vector<vtkSmartPointer<vtkBitArray>> Masks;
 
  // Ids (index selection) for individual hypertrees
  std::vector<vtkSmartPointer<vtkIdList>> Ids;
 
  // Helper to simplify writing appended array data
  void WriteAppendedArrayDataHelper(vtkAbstractArray* array, OffsetsManager& offsets);
 
  void WriteCellDataAppendedArrayDataHelper(vtkAbstractArray* array, vtkIdType numberOfVertices,
    OffsetsManager& offsets, vtkHyperTree* tree);
 
  struct HyperTreeGridMetaDataForVersion2
  {
    void Initialize();
 
    vtkSmartPointer<vtkBitArray> Descriptors;
    vtkSmartPointer<vtkTypeInt64Array> TreeIds;
    vtkSmartPointer<vtkTypeInt64Array> NumberOfVerticesPerDepth;
    vtkSmartPointer<vtkIdList> BreadthFirstIdMap;
    vtkSmartPointer<vtkTypeUInt32Array> DepthPerTree;
  } MetaDataForVersion2;
 
  OffsetsManagerGroup* CoordsOMG;
  OffsetsManagerGroup* DescriptorOMG;
  OffsetsManagerGroup* NbVerticesByLevelOMG;
  OffsetsManagerGroup* MaskOMG;
  OffsetsManagerGroup* CellDataOMG;
  OffsetsManagerGroup* TreeIdsOMG;
  OffsetsManagerGroup* DepthPerTreeOMG;
 
  int NumberOfTrees;
 
  // Default choice
  int DataSetMajorVersion;
  int DataSetMinorVersion;
 
private:
  vtkXMLHyperTreeGridWriter(const vtkXMLHyperTreeGridWriter&) = delete;
  void operator=(const vtkXMLHyperTreeGridWriter&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif