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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkBridgeCellIteratorOne
* @brief Iterate over one cell only of a dataset.
* @sa
* vtkBridgeCellIterator, vtkBridgeDataSet, vtkBridgeCellIteratorStrategy
*/
#ifndef vtkBridgeCellIteratorOne_h
#define vtkBridgeCellIteratorOne_h
#include "vtkBridgeCellIteratorStrategy.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkBridgeCell;
class vtkBridgeDataSet;
class vtkBridgeCell;
class vtkIdList;
class vtkPoints;
class vtkCell;
class VTKTESTINGGENERICBRIDGE_EXPORT vtkBridgeCellIteratorOne : public vtkBridgeCellIteratorStrategy
{
public:
static vtkBridgeCellIteratorOne* New();
vtkTypeMacro(vtkBridgeCellIteratorOne, vtkBridgeCellIteratorStrategy);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Move iterator to first position if any (loop initialization).
*/
void Begin() override;
/**
* Is there no cell at iterator position? (exit condition).
*/
vtkTypeBool IsAtEnd() override;
/**
* Cell at current position
* \pre not_at_end: !IsAtEnd()
* \pre c_exists: c!=0
* THREAD SAFE
*/
void GetCell(vtkGenericAdaptorCell* c) override;
/**
* Cell at current position.
* NOT THREAD SAFE
* \pre not_at_end: !IsAtEnd()
* \post result_exits: result!=0
*/
vtkGenericAdaptorCell* GetCell() override;
/**
* Move iterator to next position. (loop progression).
* \pre not_at_end: !IsAtEnd()
*/
void Next() override;
/**
* Used internally by vtkBridgeDataSet.
* Iterate on one cell `id' of `ds'.
* \pre ds_exists: ds!=0
* \pre valid_id: (id>=0)&&(id<=ds->GetNumberOfCells())
*/
void InitWithOneCell(vtkBridgeDataSet* ds, vtkIdType cellid);
/**
* Used internally by vtkBridgeCell.
* Iterate on one cell `c'.
* \pre c_exists: c!=0
*/
void InitWithOneCell(vtkBridgeCell* c);
/**
* Used internally by vtkBridgeCell.
* Iterate on a boundary cell (defined by its points `pts' with coordinates
* `coords', dimension `dim' and unique id `cellid') of a cell.
* \pre coords_exist: coords!=0
* \pre pts_exist: pts!=0
* \pre valid_dim: dim>=0 && dim<=2
* \pre valid_points: pts->GetNumberOfIds()>dim
*/
void InitWithPoints(vtkPoints* coords, vtkIdList* pts, int dim, vtkIdType cellid);
protected:
vtkBridgeCellIteratorOne();
~vtkBridgeCellIteratorOne() override;
int cIsAtEnd;
vtkBridgeDataSet* DataSet; // the structure on which the object iterates.
vtkIdType Id; // the id at current position.
vtkBridgeCell* Cell; // cell at current position.
vtkCell* InternalCell;
private:
vtkBridgeCellIteratorOne(const vtkBridgeCellIteratorOne&) = delete;
void operator=(const vtkBridgeCellIteratorOne&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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