CartesianMeshCoarsening.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* CartesianMeshCoarsening.h                                   (C) 2000-2024 */
/*                                                                           */
/* Coarsening of a Cartesian mesh.                                           */
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#ifndef ARCANE_CARTESIANMESH_CARTESIANMESHCOARSENING_H
#define ARCANE_CARTESIANMESH_CARTESIANMESHCOARSENING_H
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#include "arcane/utils/TraceAccessor.h"
#include "arcane/utils/Array2.h"
 
#include "arcane/core/ItemTypes.h"
#include "arcane/core/ICartesianMeshGenerationInfo.h"
 
#include "arcane/cartesianmesh/CartesianMeshGlobal.h"
 
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namespace Arcane
{
 
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class ARCANE_CARTESIANMESH_EXPORT CartesianMeshCoarsening
: public TraceAccessor
{
  friend CartesianMeshImpl;
 
 private:
 
  ARCANE_DEPRECATED_REASON("Y2024: Use Arcane::CartesianMeshUtils::createCartesianMeshCoarsening2() instead")
  explicit CartesianMeshCoarsening(ICartesianMesh* m);
 
 public:

  void createCoarseCells();

  ConstArrayView<Int32> refinedCells(Int32 index) const
  {
    return m_refined_cells[index];
  }

  ConstArrayView<Int32> coarseCells() const { return m_coarse_cells; }

  void removeRefinedCells();
 
 private:
 
  ICartesianMesh* m_cartesian_mesh = nullptr;
  Int32 m_verbosity_level = false;
  UniqueArray2<Int32> m_refined_cells;
  UniqueArray<Int32> m_coarse_cells;
  bool m_is_create_coarse_called = false;
  bool m_is_remove_refined_called = false;
  Int64 m_first_own_cell_unique_id_offset = NULL_ITEM_UNIQUE_ID;
 
 private:
 
  Int64 _getMaxUniqueId(const ItemGroup& group);
  void _recomputeMeshGenerationInfo();
};
 
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} // End namespace Arcane
 
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#endif