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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkHyperTreeGridToUnstructuredGrid
* @brief Convert hyper tree grid to
* unstructured grid.
*
* Make explicit all leaves of a hyper tree grid by converting them to cells
* of an unstructured grid.
* Produces segments in 1D, rectangles in 2D, right hexahedra in 3D.
* NB: The output will contain superimposed inter-element boundaries and pending
* nodes as a result of T-junctions.
*
* @sa
* vtkHyperTreeGrid vtkHyperTreeGridAlgorithm
*
* @par Thanks:
* This class was written by Philippe Pebay, Joachim Pouderoux, and Charles Law, Kitware 2012
* This class was modified by Guenole Harel and Jacques-Bernard Lekien, 2014
* This class was rewritten by Philippe Pebay, 2016
* This class was modified by Jacques-Bernard Lekien, 2018
* This class was corriged (used orientation) by Jacques-Bernard Lekien, 2018
* This work was supported by Commissariat a l'Energie Atomique
* CEA, DAM, DIF, F-91297 Arpajon, France.
*/
#ifndef vtkHyperTreeGridToUnstructuredGrid_h
#define vtkHyperTreeGridToUnstructuredGrid_h
#include "vtkFiltersHyperTreeModule.h" // For export macro
#include "vtkHyperTreeGridAlgorithm.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkBitArray;
class vtkCellArray;
class vtkHyperTreeGrid;
class vtkIdTypeArray;
class vtkPoints;
class vtkUnstructuredGrid;
class vtkHyperTreeGridNonOrientedGeometryCursor;
class VTKFILTERSHYPERTREE_EXPORT vtkHyperTreeGridToUnstructuredGrid
: public vtkHyperTreeGridAlgorithm
{
public:
static vtkHyperTreeGridToUnstructuredGrid* New();
vtkTypeMacro(vtkHyperTreeGridToUnstructuredGrid, vtkHyperTreeGridAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Add a cell array with original HTG ids
*/
vtkGetMacro(AddOriginalIds, bool);
vtkSetMacro(AddOriginalIds, bool);
vtkBooleanMacro(AddOriginalIds, bool);
///@}
protected:
vtkHyperTreeGridToUnstructuredGrid();
~vtkHyperTreeGridToUnstructuredGrid() override;
/**
* For this algorithm the output is a vtkUnstructuredGrid instance
*/
int FillOutputPortInformation(int, vtkInformation*) override;
/**
* Main routine to convert the grid of tree into an unstructured grid
*/
int ProcessTrees(vtkHyperTreeGrid*, vtkDataObject*) override;
/**
* Recursively descend into tree down to leaves
*/
void RecursivelyProcessTree(vtkHyperTreeGridNonOrientedGeometryCursor*);
/**
* Helper method to generate a 2D or 3D cell
*/
void AddCell(vtkIdType, double*, double*);
/**
* Storage for points of output unstructured mesh
*/
vtkPoints* Points;
/**
* Storage for cells of output unstructured mesh
*/
vtkCellArray* Cells;
/**
* Storage of underlying tree
*/
unsigned int Dimension;
unsigned int Orientation;
const unsigned int* Axes;
bool AddOriginalIds;
vtkIdTypeArray* OriginalIds;
private:
vtkHyperTreeGridToUnstructuredGrid(const vtkHyperTreeGridToUnstructuredGrid&) = delete;
void operator=(const vtkHyperTreeGridToUnstructuredGrid&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif /* vtkHyperTreeGridToUnstructuredGrid_h */
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