vtkCompositeDataIterator.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkCompositeDataIterator_h
#define vtkCompositeDataIterator_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtkCompositeDataSet;
class vtkCompositeDataSetInternals;
class vtkCompositeDataSetIndex;
class vtkDataObject;
class vtkInformation;
 
class VTKCOMMONDATAMODEL_EXPORT vtkCompositeDataIterator : public vtkObject
{
public:
  vtkTypeMacro(vtkCompositeDataIterator, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  virtual void SetDataSet(vtkCompositeDataSet* ds);
  vtkGetObjectMacro(DataSet, vtkCompositeDataSet);
 
  virtual void InitTraversal();
 
  virtual void InitReverseTraversal();
 
  virtual void GoToFirstItem() = 0;
 
  virtual void GoToNextItem() = 0;
 
  virtual int IsDoneWithTraversal() = 0;
 
  virtual vtkDataObject* GetCurrentDataObject() = 0;
 
  virtual vtkInformation* GetCurrentMetaData() = 0;
 
  virtual vtkTypeBool HasCurrentMetaData() = 0;
 
 
  vtkSetMacro(SkipEmptyNodes, vtkTypeBool);
  vtkGetMacro(SkipEmptyNodes, vtkTypeBool);
  vtkBooleanMacro(SkipEmptyNodes, vtkTypeBool);
 
  virtual unsigned int GetCurrentFlatIndex() = 0;
 
 
  vtkGetMacro(Reverse, int);
 
protected:
  vtkCompositeDataIterator();
  ~vtkCompositeDataIterator() override;
 
  // Use macro to ensure MTime is updated:
  vtkSetMacro(Reverse, int);
 
  vtkTypeBool SkipEmptyNodes;
  int Reverse;
  vtkCompositeDataSet* DataSet;
 
private:
  vtkCompositeDataIterator(const vtkCompositeDataIterator&) = delete;
  void operator=(const vtkCompositeDataIterator&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif