vtkDataObjectGenerator.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkDataObjectGenerator_h
#define vtkDataObjectGenerator_h

#include "vtkDataObjectAlgorithm.h"
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkWrappingHints.h"     // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkInternalStructureCache;

class VTKFILTERSCORE_EXPORT VTK_MARSHALAUTO vtkDataObjectGenerator : public vtkDataObjectAlgorithm
{
public:
  static vtkDataObjectGenerator* New();
  vtkTypeMacro(vtkDataObjectGenerator, vtkDataObjectAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetStringMacro(Program);
  vtkGetStringMacro(Program);

protected:
  vtkDataObjectGenerator();
  ~vtkDataObjectGenerator() override;

  int RequestData(
    vtkInformation* req, vtkInformationVector** inV, vtkInformationVector* outV) override;
  int RequestDataObject(
    vtkInformation* req, vtkInformationVector** inV, vtkInformationVector* outV) override;
  int RequestInformation(
    vtkInformation* req, vtkInformationVector** inV, vtkInformationVector* outV) override;
  int RequestUpdateExtent(
    vtkInformation* req, vtkInformationVector** inV, vtkInformationVector* outV) override;

  // the string to parse to create a structure
  char* Program;
  // a record of the structure
  vtkInternalStructureCache* Structure;

  // Helper for RequestDataObject
  vtkDataObject* CreateOutputDataObjects(vtkInternalStructureCache* structure);
  // Helper for RequestData
  vtkDataObject* FillOutputDataObjects(
    vtkInternalStructureCache* structure, int level, int stripe = 0);

  // to determine which composite data stripe to fill in
  vtkIdType Rank;
  vtkIdType Processors;

  // create the templated atomic data sets
  void MakeImageData1(vtkDataSet* ds);
  void MakeImageData2(vtkDataSet* ds);
  void MakeUniformGrid1(vtkDataSet* ds);
  void MakeRectilinearGrid1(vtkDataSet* ds);
  void MakeStructuredGrid1(vtkDataSet* ds);
  void MakePolyData1(vtkDataSet* ds);
  void MakePolyData2(vtkDataSet* ds);
  void MakeUnstructuredGrid1(vtkDataSet* ds);
  void MakeUnstructuredGrid2(vtkDataSet* ds);
  void MakeUnstructuredGrid3(vtkDataSet* ds);
  void MakeUnstructuredGrid4(vtkDataSet* ds);

  // used to spatially separate sub data sets within composites
  double XOffset; // increases for each dataset index
  double YOffset; // increases for each sub data set
  double ZOffset; // increases for each group index

  // used to filling in point and cell values with unique Ids
  vtkIdType CellIdCounter;
  vtkIdType PointIdCounter;

  // assign point and cell values to each point and cell
  void MakeValues(vtkDataSet* ds);

private:
  vtkDataObjectGenerator(const vtkDataObjectGenerator&) = delete;
  void operator=(const vtkDataObjectGenerator&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif