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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkUniformGridAMRDataIterator
* @brief subclass of vtkCompositeDataIterator
* with API to get current level and dataset index.
*
*/
#ifndef vtkUniformGridAMRDataIterator_h
#define vtkUniformGridAMRDataIterator_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkCompositeDataIterator.h"
#include "vtkSmartPointer.h" //for member variable Information
VTK_ABI_NAMESPACE_BEGIN
class vtkInformation;
class vtkAMRInformation;
class vtkAMRDataInternals;
class vtkUniformGridAMR;
class AMRIndexIterator;
class VTKCOMMONDATAMODEL_EXPORT vtkUniformGridAMRDataIterator : public vtkCompositeDataIterator
{
public:
static vtkUniformGridAMRDataIterator* New();
vtkTypeMacro(vtkUniformGridAMRDataIterator, vtkCompositeDataIterator);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Returns the meta-data associated with the current item.
* Note that this points to a single instance of vtkInformation object
* allocated by the iterator and will be changed as soon as GoToNextItem is
* called.
*/
vtkInformation* GetCurrentMetaData() override;
vtkTypeBool HasCurrentMetaData() override { return 1; }
/**
* Returns the current item. Valid only when IsDoneWithTraversal() returns 0.
*/
vtkDataObject* GetCurrentDataObject() override;
/**
* Flat index is an index obtained by traversing the tree in preorder.
* This can be used to uniquely identify nodes in the tree.
* Not valid if IsDoneWithTraversal() returns true.
*/
unsigned int GetCurrentFlatIndex() override;
/**
* Returns the level for the current dataset.
*/
virtual unsigned int GetCurrentLevel();
/**
* Returns the dataset index for the current data object. Valid only if the
* current data is a leaf node i.e. no a composite dataset.
*/
virtual unsigned int GetCurrentIndex();
/**
* Move the iterator to the beginning of the collection.
*/
void GoToFirstItem() override;
/**
* Move the iterator to the next item in the collection.
*/
void GoToNextItem() override;
/**
* Test whether the iterator is finished with the traversal.
* Returns 1 for yes, and 0 for no.
* It is safe to call any of the GetCurrent...() methods only when
* IsDoneWithTraversal() returns 0.
*/
int IsDoneWithTraversal() override;
protected:
vtkUniformGridAMRDataIterator();
~vtkUniformGridAMRDataIterator() override;
vtkSmartPointer<AMRIndexIterator> Iter;
private:
vtkUniformGridAMRDataIterator(const vtkUniformGridAMRDataIterator&) = delete;
void operator=(const vtkUniformGridAMRDataIterator&) = delete;
vtkSmartPointer<vtkInformation> Information;
vtkSmartPointer<vtkUniformGridAMR> AMR;
vtkAMRInformation* AMRInfo;
vtkAMRDataInternals* AMRData;
void GetCurrentIndexPair(unsigned int& level, unsigned int& id);
};
VTK_ABI_NAMESPACE_END
#endif
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