DynamicMeshIncrementalBuilder.cc

// -*- 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
//-----------------------------------------------------------------------------
/*---------------------------------------------------------------------------*/
/* DynamicMeshIncrementalBuilder.cc                            (C) 2000-2025 */
/*                                                                           */
/* Incremental mesh construction.                                            */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#include "arcane/utils/Iterator.h"
#include "arcane/utils/ArgumentException.h"
#include "arcane/utils/NotImplementedException.h"
#include "arcane/utils/NotSupportedException.h"
#include "arcane/utils/ITraceMng.h"
#include "arcane/utils/ValueConvert.h"
 
#include "arcane/core/ItemTypeMng.h"
#include "arcane/core/MeshUtils.h"
#include "arcane/core/IParallelMng.h"
#include "arcane/core/SerializeBuffer.h"
#include "arcane/core/ItemPrinter.h"
#include "arcane/core/Connectivity.h"
#include "arcane/core/MeshToMeshTransposer.h"
#include "arcane/core/IItemFamilyModifier.h"
 
#include "arcane/mesh/DynamicMesh.h"
#include "arcane/mesh/DynamicMeshIncrementalBuilder.h"
#include "arcane/mesh/OneMeshItemAdder.h"
#include "arcane/mesh/GhostLayerBuilder.h"
#include "arcane/mesh/FaceUniqueIdBuilder.h"
#include "arcane/mesh/EdgeUniqueIdBuilder.h"
#include "arcane/mesh/CellFamily.h"
#include "arcane/mesh/GraphDoFs.h"
#include "arcane/mesh/ParticleFamily.h"
 
#include <set>
#include <map>
#include <algorithm>
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
namespace Arcane::mesh
{
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
// #define ARCANE_DEBUG_DYNAMIC_MESH
// #define ARCANE_DEBUG_DYNAMIC_MESH2
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
DynamicMeshIncrementalBuilder::
DynamicMeshIncrementalBuilder(DynamicMesh* mesh)
: TraceAccessor(mesh->traceMng())
, m_mesh(mesh)
, m_item_type_mng(mesh->itemTypeMng())
, m_has_amr(mesh->isAmrActivated())
, m_one_mesh_item_adder(new OneMeshItemAdder(this))
{
  if (auto v = Convert::Type<Int32>::tryParseFromEnvironment("ARCANE_VERBOSE_MESH_BUILDER", true))
    m_verbose = (v.value() != 0);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
DynamicMeshIncrementalBuilder::
~DynamicMeshIncrementalBuilder()
{
  delete m_one_mesh_item_adder;
  delete m_face_unique_id_builder;
  delete m_edge_unique_id_builder;
  delete m_ghost_layer_builder;
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_printCellFaceInfos(ItemInternal* icell, const String& str)
{
  Cell cell(icell);
  Integer nb_num_back_face = 0;
  Integer nb_num_front_face = 0;
  Integer index = 0;
  for (Face face : cell.faces()) {
    String add_msg;
    if (face.backCell() == cell) {
      ++nb_num_back_face;
      add_msg = "is a back face";
    }
    else {
      ++nb_num_front_face;
      add_msg = "is a front face";
    }
    info() << str << ": celluid=" << cell.uniqueId()
           << " faceuid=" << face.uniqueId()
           << " faceindex=" << index
           << add_msg;
    ++index;
  }
  info() << str << ": celluid=" << cell.uniqueId()
         << " nbback=" << nb_num_back_face
         << " nbfront=" << nb_num_front_face;
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addCells(Integer nb_cell, Int64ConstArrayView cells_infos,
         Integer sub_domain_id, Int32ArrayView cells,
         bool allow_build_face)
{
  ItemTypeMng* itm = m_item_type_mng;
 
  Integer cells_infos_index = 0;
  bool add_to_cells = cells.size() != 0;
  if (add_to_cells && nb_cell != cells.size())
    ARCANE_THROW(ArgumentException, "return array 'cells' has to have same size as number of cells");
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
    ItemTypeId item_type_id{ (Int16)cells_infos[cells_infos_index] };
    ++cells_infos_index;
    Int64 cell_unique_id = cells_infos[cells_infos_index];
    ++cells_infos_index;
 
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    Integer current_cell_nb_node = it->nbLocalNode();
    Int64ConstArrayView current_cell_nodes_uid(current_cell_nb_node, &cells_infos[cells_infos_index]);
 
    ItemInternal* cell = m_one_mesh_item_adder->addOneCell(item_type_id, cell_unique_id, sub_domain_id, current_cell_nodes_uid,
                                                           allow_build_face);
 
    if (add_to_cells)
      cells[i_cell] = cell->localId();
    cells_infos_index += current_cell_nb_node;
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addCells3(Integer nb_cell, Int64ConstArrayView cells_infos,
          Integer sub_domain_id, Int32ArrayView cells,
          bool allow_build_face)
{
  bool add_to_cells = cells.size() != 0;
  if (add_to_cells && nb_cell != cells.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'cells' has to have same size as number of cells");
  ItemDataList item_data_list; // store item ids and dependency connectivities
  ItemDataList item_relation_data_list; // store relation connectivities
  ItemData& cell_data = item_data_list.itemData(Integer(m_mesh->cellFamily()->itemKind()),
                                                nb_cell, 0, cells, &mesh()->trueCellFamily(), &mesh()->trueCellFamily(), sub_domain_id);
  // item info_size cannot be guessed
  Int64UniqueArray faces_infos, edges_infos, nodes_infos, node_uids;
  Int32UniqueArray face_lids, edge_lids, node_lids;
  Integer nb_face = 0, nb_edge = 0, nb_node = 0;
  std::map<Int64, Int64SharedArray> cell_to_face_connectivity_info;
  std::map<std::pair<Int64, Int64>, Int64> edge_uid_map;
 
  // Fill classical info
  _fillFaceInfo(nb_face, nb_cell, faces_infos, cells_infos, cell_to_face_connectivity_info);
  _fillEdgeInfo(nb_edge, nb_face, edges_infos, faces_infos, edge_uid_map);
  _fillNodeInfo(nb_node, nb_face, nodes_infos, faces_infos);
 
  // Fill Cell info 2
  _fillCellNewInfoNew(nb_cell, cells_infos, cell_data.itemInfos(), cell_to_face_connectivity_info, edge_uid_map);
  // Fill Face info 2
  if (allow_build_face) {
    ItemData& face_data = item_data_list.itemData(Integer(m_mesh->faceFamily()->itemKind()), nb_face, 0, face_lids, &mesh()->trueFaceFamily(), &mesh()->trueFaceFamily(), sub_domain_id);
    face_lids.resize(item_data_list[m_mesh->faceFamily()->itemKind()].nbItems());
    _fillFaceNewInfoNew(nb_face, faces_infos, face_data.itemInfos(), edge_uid_map); // todo voir appel depuis add Faces
    ItemData& face_relation_data = item_relation_data_list.itemData(Integer(m_mesh->faceFamily()->itemKind()), nb_face, 0, face_lids, &mesh()->trueFaceFamily(), &mesh()->trueFaceFamily(), sub_domain_id);
    _initFaceRelationInfo(face_relation_data, cell_data, faces_infos); // face-cell relations
  }
  // Fill Edge info 2
  if (hasEdge()) {
    Integer edge_info_size = 1 + nb_edge * 6; //New info = Nb_connected_family + for each edge : type, uid, connected_family_kind, nb_node_connected, first_node_uid, second_node_uid
    ItemData& edge_data = item_data_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()), nb_edge, edge_info_size, edge_lids, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
    edge_lids.resize(item_data_list[m_mesh->edgeFamily()->itemKind()].nbItems());
    _fillEdgeNewInfoNew(nb_edge, edges_infos, edge_data.itemInfos()); // reprendre fillEdgeInfo et voir l'appel depuis add Edges + attention ordre des noeuds,
    ItemData& edge_relation_data = item_relation_data_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()), nb_edge, edge_info_size, edge_lids, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
    _initEdgeRelationInfo(edge_relation_data, cell_data, edges_infos); // edge-cell relations
    if (allow_build_face) {
      _appendEdgeRelationInfo(edge_relation_data, item_data_list[IK_Face], edges_infos); // edge-face relations
      _appendFaceRelationInfo(item_relation_data_list[IK_Face], edge_data, faces_infos); // face-edge relations
    }
  }
  // Fill Node info 2
  Integer node_info_size = 1 + nb_node * 2; //New info = Nb_connected_family + for each node : type, uid (no connected family)
  ItemData& node_data = item_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, node_info_size, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  node_lids.resize(item_data_list[m_mesh->nodeFamily()->itemKind()].nbItems());
  _fillNodeNewInfo(nodes_infos, node_data.itemInfos());
  ItemData& node_relation_data = item_relation_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, node_info_size, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  _initNodeRelationInfo(node_relation_data, cell_data, nodes_infos); // node-cell relations
  if (allow_build_face)
    _appendNodeRelationInfo(node_relation_data, item_data_list[IK_Face], nodes_infos); // node-face relations
  if (hasEdge())
    _appendNodeRelationInfo(node_relation_data, item_data_list[IK_Edge], nodes_infos); // node-edge relations
 
  // Launch node, face and edges (not mandatory) and cell creation
  addItems(item_data_list, item_relation_data_list);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addCells2(Integer nb_cell, Int64ConstArrayView cells_infos,
          Integer sub_domain_id, Int32ArrayView cells,
          bool allow_build_face)
{
  ItemDataList item_data_list;
  ItemData& cell_data = item_data_list.itemData(Integer(m_mesh->cellFamily()->itemKind()),
                                                nb_cell, 0, cells, &mesh()->trueCellFamily(), &mesh()->trueCellFamily(), sub_domain_id);
  // item info_size cannot be guessed
  Int64Array& cell_infos2 = cell_data.itemInfos();
  Int64UniqueArray faces_infos;
  Int64UniqueArray node_uids;
  Int32UniqueArray face_lids;
  Integer nb_face;
 
  // Fill cell info 2
  _fillCellInfo2(nb_cell, cells_infos, cell_infos2, nb_face, faces_infos, node_uids, allow_build_face);
 
  // Fill face info 2
  if (allow_build_face) {
    Integer face_infos2_size = faces_infos.size() + 1 + 2 * nb_face; // additive info nb_connected_family + nb_face * (family_id + nb_connected_element)
    face_lids.resize(nb_face);
    ItemData& face_data = item_data_list.itemData(Integer(m_mesh->faceFamily()->itemKind()),
                                                  nb_face, face_infos2_size, face_lids, &mesh()->trueFaceFamily(), &mesh()->trueFaceFamily(), sub_domain_id);
    Int64ArrayView face_infos2 = face_data.itemInfos().view();
    _fillFaceInfo2(nb_face, faces_infos, face_infos2, node_uids); // if allow_build_face false, node_uids built in fillCellInfo3
  }
 
  // Fill node info 2
  Integer nb_node_to_add = node_uids.size();
  Int32UniqueArray node_lids(nb_node_to_add);
  ItemData& node_data = item_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()),
                                                nb_node_to_add, 2 * nb_node_to_add + 1, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  Int64Array& node_infos2 = node_data.itemInfos();
  _fillNodeNewInfo(node_uids, node_infos2);
 
  // Launch node and face and cell creation
  addItems(item_data_list);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
_fillFaceInfo(Integer& nb_face, Integer nb_cell, Int64Array& faces_infos, Int64ConstArrayView cells_infos, std::map<Int64, Int64SharedArray>& cell_to_face_connectivity_info)
{
  faces_infos.reserve(2 * cells_infos.size());
  Int64UniqueArray work_face_sorted_nodes;
  Int64UniqueArray work_face_orig_nodes;
  ItemTypeMng* itm = m_item_type_mng;
  Integer cells_infos_index = 0;
  nb_face = 0;
  NodeInFaceSet face_nodes_set;
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
    Integer item_type_id = (Integer)cells_infos[cells_infos_index++];
    Int64 current_cell_unique_id = cells_infos[cells_infos_index++];
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    Integer current_cell_nb_node = it->nbLocalNode();
    Int64ConstArrayView current_cell_node_uids(current_cell_nb_node, &cells_infos[cells_infos_index]);
    Integer current_cell_nb_face = it->nbLocalFace();
    for (Integer face_in_cell_index = 0; face_in_cell_index < current_cell_nb_face; ++face_in_cell_index) {
      const ItemTypeInfo::LocalFace& current_face = it->localFace(face_in_cell_index);
      Integer current_face_nb_node = current_face.nbNode();
      work_face_orig_nodes.resize(current_face_nb_node);
      work_face_sorted_nodes.resize(current_face_nb_node);
      Integer i = 0;
      for (Integer node_in_face_index = 0; node_in_face_index < current_face_nb_node; ++node_in_face_index) {
        work_face_orig_nodes[i++] = current_cell_node_uids[current_face.node(node_in_face_index)];
      }
      mesh_utils::reorderNodesOfFace(work_face_orig_nodes, work_face_sorted_nodes);
      // get face uid: we shouldn't have to guess, it should be given in arguments...
      Int64 current_face_uid = _findFaceUniqueId(work_face_sorted_nodes, face_nodes_set);
      if (current_face_uid == NULL_ITEM_ID) // face not already known add to face info
      {
        current_face_uid = m_face_uid_pool++;
        faces_infos.add(current_face.typeId()); // face info type
        faces_infos.add(current_face_uid); // face info uid
        faces_infos.addRange(work_face_sorted_nodes); // face info node uids
        _addFaceNodes(face_nodes_set, work_face_sorted_nodes, current_face_uid);
        ++nb_face;
      }
      cell_to_face_connectivity_info[current_cell_unique_id].add(current_face_uid);
    }
    cells_infos_index += current_cell_nb_node;
  }
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillEdgeInfo(Integer& nb_edge, Integer nb_face, Int64Array& edges_infos,
              Int64ConstArrayView faces_infos, std::map<std::pair<Int64, Int64>, Int64>& edge_uid_map)
{
  edges_infos.reserve(2 * faces_infos.size());
  ItemTypeMng* itm = m_item_type_mng;
  Integer faces_infos_index = 0;
  nb_edge = 0;
  for (Integer i_face = 0; i_face < nb_face; ++i_face) {
    Integer item_type_id = (Integer)faces_infos[faces_infos_index++]; // face type
    ++faces_infos_index; // face uid (unused)
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    Integer current_face_nb_node = it->nbLocalNode();
    Int64ConstArrayView current_face_node_uids(current_face_nb_node, &faces_infos[faces_infos_index]);
    Integer current_face_nb_edge = it->nbLocalEdge();
    for (Integer edge_in_face_index = 0; edge_in_face_index < current_face_nb_edge; ++edge_in_face_index) {
      const ItemTypeInfo::LocalEdge& current_edge = it->localEdge(edge_in_face_index);
      Int64 first_node = current_face_node_uids[current_edge.beginNode()];
      Int64 second_node = current_face_node_uids[current_edge.endNode()];
      if (first_node > second_node)
        std::swap(first_node, second_node);
      auto edge_it = edge_uid_map.insert(std::make_pair(std::make_pair(first_node, second_node), m_edge_uid_pool));
      if (edge_it.second) {
        edges_infos.add(m_edge_uid_pool); // edge uid
        edges_infos.add(first_node); // first node uid
        edges_infos.add(second_node); // second node uid
        ++nb_edge;
        ++m_edge_uid_pool;
      }
    }
    faces_infos_index += current_face_nb_node;
  }
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillNodeInfo(Integer& nb_node, Integer nb_face, Int64Array& nodes_infos, Int64ConstArrayView faces_infos)
{
  nodes_infos.reserve(faces_infos.size());
  Integer faces_infos_index = 0;
  std::set<Int64> nodes_set;
  ItemTypeMng* itm = m_item_type_mng;
  for (Integer i_face = 0; i_face < nb_face; ++i_face) {
    Int32 type_id = CheckedConvert::toInt32(faces_infos[faces_infos_index++]);
    Integer current_face_nb_node = itm->typeFromId(type_id)->nbLocalNode(); // face type
    ++faces_infos_index; //face_uid (unused)
    for (auto node_uid : faces_infos.subConstView(faces_infos_index, current_face_nb_node)) {
      nodes_set.insert(node_uid);
    }
    faces_infos_index += current_face_nb_node;
  }
  nb_node = CheckedConvert::toInteger(nodes_set.size());
  for (auto node_uid : nodes_set) {
    nodes_infos.add(node_uid);
  }
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillNodeInfoFromEdge(Integer& nb_node, Integer nb_edge, Int64Array& nodes_infos, Int64ConstArrayView edges_infos)
{
  nodes_infos.reserve(2 * edges_infos.size());
  Integer edges_infos_index = 0;
  std::set<Int64> nodes_set;
  for (Integer i_edge = 0; i_edge < nb_edge; ++i_edge) {
    ++edges_infos_index; //edge_uid (unused)
    nodes_set.insert(edges_infos[edges_infos_index++]);
    nodes_set.insert(edges_infos[edges_infos_index++]);
  }
  nb_node = CheckedConvert::toInteger(nodes_set.size());
  for (auto node_uid : nodes_set) {
    nodes_infos.add(node_uid);
  }
}
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillCellNewInfoNew(Integer nb_cell, Int64ConstArrayView cells_infos, Int64Array& cell_infos2,
                    const std::map<Int64, Int64SharedArray>& cell_to_face_connectivity_info, const std::map<std::pair<Int64, Int64>, Int64>& edge_uid_map)
{
  Integer cell_infos2_size_approx = 1 + 3 * (cells_infos.size() + 2 * nb_cell); // supposes as many faces as nodes as edges...
  cell_infos2.reserve(cell_infos2_size_approx);
  ItemTypeMng* itm = m_item_type_mng;
  Integer cells_infos_index = 0;
  Integer nb_connected_families = hasEdge() ? 3 : 2;
  cell_infos2.add(nb_connected_families); // nb_connected_families (node and face +/- edge)
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
    Integer item_type_id = (Integer)cells_infos[cells_infos_index];
    cell_infos2.add(cells_infos[cells_infos_index++]); // cell type
    Int64 current_cell_uid = cells_infos[cells_infos_index];
    cell_infos2.add(cells_infos[cells_infos_index++]); // cell uid
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    //--- Cell node connectivity
    cell_infos2.add(mesh()->nodeFamily()->itemKind()); // connected_family_id: node family
    Integer current_cell_nb_node = it->nbLocalNode();
    cell_infos2.add(current_cell_nb_node); // nb_connected_nodes
    Int64ConstArrayView current_cell_node_uids(current_cell_nb_node, &cells_infos[cells_infos_index]);
    cell_infos2.addRange(current_cell_node_uids); // node ids
    //--- Cell face connectivity
    cell_infos2.add(mesh()->faceFamily()->itemKind()); // connected_family_id: face family
    Integer current_cell_nb_face = it->nbLocalFace();
    cell_infos2.add(current_cell_nb_face); // nb_connected_faces
    Int64ArrayView current_cell_faces = cell_to_face_connectivity_info.find(current_cell_uid)->second.view();
    if (current_cell_nb_face != current_cell_faces.size())
      ARCANE_FATAL("Incoherent number of faces for cell {0}. Expected {1} found {2}",
                   current_cell_uid, current_cell_nb_face, current_cell_faces.size());
    cell_infos2.addRange(current_cell_faces); // face ids
    //-- Cell edge connectivity
    if (hasEdge()) {
      cell_infos2.add(mesh()->edgeFamily()->itemKind()); // connected_family_id: edge family
      Integer current_cell_nb_edge = it->nbLocalEdge();
      cell_infos2.add(current_cell_nb_edge); // nb_connected_edges
      for (int edge_index = 0; edge_index < current_cell_nb_edge; ++edge_index) {
        Int64 first_node = current_cell_node_uids[it->localEdge(edge_index).beginNode()];
        Int64 second_node = current_cell_node_uids[it->localEdge(edge_index).endNode()];
        if (first_node > second_node)
          std::swap(first_node, second_node); // edge may be oriented negatively in the cell
        auto edge_it = edge_uid_map.find(std::make_pair(first_node, second_node));
        if (edge_it == edge_uid_map.end())
          ARCANE_FATAL("Do not find edge with nodes {0}-{1} in edge uid map. Exiting",
                       current_cell_node_uids[it->localEdge(edge_index).beginNode()],
                       current_cell_node_uids[it->localEdge(edge_index).endNode()]);
        cell_infos2.add(edge_it->second);
      }
    }
    cells_infos_index += current_cell_nb_node;
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillCellInfo2(Integer nb_cell, Int64ConstArrayView cells_infos, Int64Array& cell_infos2,
               Integer& nb_face, Int64Array& faces_infos, Int64Array& node_uids, bool allow_build_face)
{
  Integer cell_infos2_size_approx = 1 + 2 * (cells_infos.size() + 2 * nb_cell); // supposes as many faces as nodes...
  cell_infos2.reserve(cell_infos2_size_approx);
  // Fill infos
  ItemTypeMng* itm = m_item_type_mng;
  Integer cells_infos_index = 0;
  cell_infos2.add(2); // nb_connected_families (node and face)
 
  nb_face = 0;
  faces_infos.reserve(2 * cells_infos.size());
  Int64UniqueArray work_face_sorted_nodes;
  Int64UniqueArray work_face_orig_nodes;
  NodeInFaceSet face_nodes_set;
  std::set<Int64> node_uid_set;
  // Fill face_infos2 from faces_infos
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
 
    Integer item_type_id = (Integer)cells_infos[cells_infos_index];
    cell_infos2.add(cells_infos[cells_infos_index++]); // cell type
    cell_infos2.add(cells_infos[cells_infos_index++]); // cell uid
    cell_infos2.add(mesh()->nodeFamily()->itemKind()); // connected_family_id: node family
 
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    // Cell node connectivity
    Integer current_cell_nb_node = it->nbLocalNode();
    cell_infos2.add(current_cell_nb_node); // nb_connected_nodes
    Int64ConstArrayView current_cell_node_uids(current_cell_nb_node, &cells_infos[cells_infos_index]);
    cell_infos2.addRange(current_cell_node_uids); // node ids
    if (!allow_build_face)
      node_uid_set.insert(current_cell_node_uids.begin(), current_cell_node_uids.end()); // otherwise node ids will be computed in face info build
    // cell face connectivity
    cell_infos2.add(mesh()->faceFamily()->itemKind()); // connected_family_id: face family
    Integer current_cell_nb_face = it->nbLocalFace();
    cell_infos2.add(current_cell_nb_face); // nb_connected_faces
    for (Integer face_in_cell_index = 0; face_in_cell_index < current_cell_nb_face; ++face_in_cell_index) {
      ItemTypeInfo::LocalFace current_face = it->localFace(face_in_cell_index);
      Integer current_face_nb_node = current_face.nbNode();
      work_face_orig_nodes.resize(current_face_nb_node);
      work_face_sorted_nodes.resize(current_face_nb_node);
      Integer i = 0;
      for (Integer node_in_face_index = 0; node_in_face_index < current_face_nb_node; ++node_in_face_index) {
        work_face_orig_nodes[i++] = current_cell_node_uids[current_face.node(node_in_face_index)];
      }
      mesh_utils::reorderNodesOfFace(work_face_orig_nodes, work_face_sorted_nodes);
      // get face uid: we shouldn't have to guess, it should be given in arguments...
      Int64 current_face_uid = _findFaceUniqueId(work_face_sorted_nodes, face_nodes_set);
      if (current_face_uid == NULL_ITEM_ID) // face not already known add to face info
      {
        current_face_uid = m_face_uid_pool++;
        faces_infos.add(current_face.typeId()); // face info type
        faces_infos.add(current_face_uid); // face info uid
        faces_infos.addRange(work_face_sorted_nodes); // face info node uids
        _addFaceNodes(face_nodes_set, work_face_sorted_nodes, current_face_uid);
        ++nb_face;
      }
      cell_infos2.add(current_face_uid); // face ids
    }
    cells_infos_index += current_cell_nb_node;
  }
  if (!allow_build_face) {
    node_uids.resize(node_uid_set.size());
    Integer index = 0;
    for (Int64 node_uid : node_uid_set)
      node_uids[index++] = node_uid;
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
_initFaceRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView faces_info)
{
  _fillFaceRelationInfo(source_item_relation_data, target_item_dependencies_data, faces_info, true);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_appendFaceRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView faces_info)
{
  _fillFaceRelationInfo(source_item_relation_data, target_item_dependencies_data, faces_info, false);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillFaceRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data,
                      Int64ConstArrayView faces_info, bool is_source_relation_data_empty)
{
  // face_infos = [{face_type, face_uid, {face_node_uids}]
  Int64UniqueArray face_uids_and_types;
  face_uids_and_types.reserve(2 * source_item_relation_data.nbItems());
  ItemTypeMng* itm = m_item_type_mng;
  for (Integer face_info_index = 0; face_info_index < faces_info.size();) {
    face_uids_and_types.add(faces_info[face_info_index + 1]); // face_uid
    face_uids_and_types.add(faces_info[face_info_index]); // face_type
    Integer type_id = CheckedConvert::toInteger(face_uids_and_types.back());
    face_info_index += (2 + itm->typeFromId(type_id)->nbLocalNode()); // increment and skip info (first & second_node_uid)
  }
  _fillItemRelationInfo(source_item_relation_data, target_item_dependencies_data, face_uids_and_types, is_source_relation_data_empty);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_initEdgeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView edges_info)
{
  _fillEdgeRelationInfo(source_item_relation_data, target_item_dependencies_data, edges_info, true);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_appendEdgeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView edges_info)
{
  _fillEdgeRelationInfo(source_item_relation_data, target_item_dependencies_data, edges_info, false);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillEdgeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data,
                      Int64ConstArrayView edges_info, bool is_source_relation_data_empty)
{
  // edge_infos = [{edge_uid, first_node_uid, second_node_uid}
  ARCANE_ASSERT((source_item_relation_data.nbItems() * 3 == edges_info.size()), ("source_item_relation_data and edges_info size incoherent. Exiting."));
  Int64UniqueArray edge_uids_and_types;
  edge_uids_and_types.reserve(2 * source_item_relation_data.nbItems());
  for (Integer edge_info_index = 0; edge_info_index < edges_info.size();) {
    edge_uids_and_types.add(edges_info[edge_info_index++]); // edge_uid
    edge_uids_and_types.add(IT_Line2); // edge_type
    edge_info_index += 2; // skip info (first & second_node_uid)
  }
  _fillItemRelationInfo(source_item_relation_data, target_item_dependencies_data, edge_uids_and_types, is_source_relation_data_empty);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_initNodeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView nodes_info)
{
  _fillNodeRelationInfo(source_item_relation_data, target_item_dependencies_data, nodes_info, true);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_appendNodeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView nodes_info)
{
  _fillNodeRelationInfo(source_item_relation_data, target_item_dependencies_data, nodes_info, false);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillNodeRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data, Int64ConstArrayView nodes_info, bool is_source_relation_data_empty)
{
  // nodes_info = [node_uids]
  ARCANE_ASSERT((source_item_relation_data.nbItems() == nodes_info.size()), ("source_item_relation_data and nodes_info size incoherent. Exiting."));
  Int64UniqueArray node_uids_and_types(2 * nodes_info.size());
  for (Integer node_index = 0; node_index < nodes_info.size(); ++node_index) {
    node_uids_and_types[2 * node_index] = nodes_info[node_index];
    node_uids_and_types[2 * node_index + 1] = IT_Vertex;
  }
  _fillItemRelationInfo(source_item_relation_data, target_item_dependencies_data, node_uids_and_types, is_source_relation_data_empty);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillItemRelationInfo(ItemData& source_item_relation_data, const ItemData& target_item_dependencies_data,
                      Int64ConstArrayView source_item_uids_and_types,
                      bool is_source_item_relation_data_empty)
{
  ARCANE_ASSERT((source_item_relation_data.nbItems() * 2 == source_item_uids_and_types.size()),
                ("source item number incoherent between source_item_relation_data and source_item_uids_and_types. Exiting."));
  // Fill an ItemData containing source to target relations (target to source relations are included in target_item_data)
  auto& source_relation_info = source_item_relation_data.itemInfos();
  const auto& target_dependencies_info = target_item_dependencies_data.itemInfos();
  auto source_family = source_item_relation_data.itemFamily();
  auto target_family = target_item_dependencies_data.itemFamily();
  if (!source_family || !target_family)
    return;
  std::map<Int64, Int64SharedArray> source_to_target_uids;
  Integer nb_families_connected_to_target = CheckedConvert::toInteger(target_dependencies_info[0]);
  Integer target_info_index = 1; // 0 is nb_connected_families
 
  // Fill map source to target traversing target_item_dependencies_data
  for (; target_info_index < target_dependencies_info.size();) {
    target_info_index++; // current target item_type
    Int64 target_item_uid = target_dependencies_info[target_info_index++]; // current target item uid
    for (Integer family_connected_to_target = 0; family_connected_to_target < nb_families_connected_to_target; ++family_connected_to_target) {
      Int64 family_connected_to_target_kind = target_dependencies_info[target_info_index++]; // current target item connected family kind
      if (family_connected_to_target_kind != source_family->itemKind()) { //this connection info does not concern source family. Skip
        Integer nb_non_read_values = CheckedConvert::toInteger(target_dependencies_info[target_info_index++]); // nb_connected_item on this other family (/= to source family)
        target_info_index += nb_non_read_values;
        continue;
      }
      else {
        Int32 nb_source_item_connected_to_target_item = CheckedConvert::toInt32(target_dependencies_info[target_info_index++]);
        for (Integer source_item_index = 0; source_item_index < nb_source_item_connected_to_target_item; ++source_item_index) {
          source_to_target_uids[target_dependencies_info[source_item_index + target_info_index]].add(target_item_uid);
        }
        target_info_index += nb_source_item_connected_to_target_item;
      }
    }
  }
  // Fill or append source_item_relation_data traversing the map source_to_target_connectivity
  if (is_source_item_relation_data_empty)
    _initEmptyRelationInfo(source_relation_info, source_to_target_uids, source_item_uids_and_types,
                           target_dependencies_info.size(), target_family);
  else
    _appendInitializedRelationInfo(source_relation_info, source_to_target_uids, source_item_uids_and_types,
                                   target_dependencies_info.size(), target_family);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_initEmptyRelationInfo(Int64Array& source_relation_info, std::map<Int64, Int64SharedArray>& source_to_target_uids, Int64ConstArrayView source_item_uids_and_types,
                       Integer approx_relation_size,
                       IItemFamily const* target_family)
{
  if (!source_relation_info.empty())
    source_relation_info.clear();
  source_relation_info.reserve(approx_relation_size); // clearly too much elements...but only available info. Do better ?
  source_relation_info.add(1); // nb_connected_families
  // Fill source_item_relation_data
  for (Integer source_item_uids_and_types_index = 0; source_item_uids_and_types_index < source_item_uids_and_types.size(); source_item_uids_and_types_index += 2) {
    Int64 source_item_uid = source_item_uids_and_types[source_item_uids_and_types_index];
    source_relation_info.add(source_item_uids_and_types[source_item_uids_and_types_index + 1]); // item type
    source_relation_info.add(source_item_uid); // item uid
    source_relation_info.add(target_family->itemKind()); // connected family kind
    auto& connected_items = source_to_target_uids[source_item_uid];
    source_relation_info.add(connected_items.size()); // nb_connected_item
    source_relation_info.addRange(connected_items.view()); // connected_items uids
  }
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_appendInitializedRelationInfo(Int64Array& source_relation_info, std::map<Int64, Int64SharedArray>& source_to_target_uids, Int64ConstArrayView source_item_uids_and_types,
                               Integer approx_relation_size,
                               IItemFamily const* target_family)
{
  // Create a working array to build the consolidated info. This array will be copied in to source_relation_info at the end.
  Int64UniqueArray source_relation_info_wrk_copy;
  source_relation_info_wrk_copy.reserve(source_relation_info.size() + approx_relation_size);
  std::set<Int64> treated_items; // To detect eventual source_items not already present in source_relation_info
  Integer source_relation_info_index = 0;
  Integer nb_connected_family = CheckedConvert::toInteger(source_relation_info[source_relation_info_index++]);
  source_relation_info_wrk_copy.add(nb_connected_family + 1); // adding a new connected family
  for (; source_relation_info_index < source_relation_info.size();) {
    source_relation_info_wrk_copy.add(source_relation_info[source_relation_info_index++]); // item type
    Int64 source_item_uid = source_relation_info[source_relation_info_index++]; // get item uid
    source_relation_info_wrk_copy.add(source_item_uid);
    treated_items.insert(source_item_uid);
    for (Integer connected_family_index = 0; connected_family_index < nb_connected_family; ++connected_family_index) {
      source_relation_info_wrk_copy.add(source_relation_info[source_relation_info_index++]); // family kind
      Integer nb_connected_elements = CheckedConvert::toInteger(source_relation_info[source_relation_info_index++]); // nb connected elements
      source_relation_info_wrk_copy.add(nb_connected_elements);
      source_relation_info_wrk_copy.addRange(source_relation_info.subConstView(source_relation_info_index, nb_connected_elements));
      source_relation_info_index += nb_connected_elements;
    }
    // Add new connection info
    source_relation_info_wrk_copy.add(target_family->itemKind()); // family kind
    const auto& connected_items = source_to_target_uids[source_item_uid]; // get connected items
    source_relation_info_wrk_copy.add(connected_items.size()); // nb connected elements
    source_relation_info_wrk_copy.addRange(connected_items);
  }
  // Find eventual source_items not already present in source_relation_info : todo check this can happen
  for (Integer source_item_uids_and_types_index = 0; source_item_uids_and_types_index < source_item_uids_and_types.size(); source_item_uids_and_types_index += 2) {
    Int64 source_item_uid = source_item_uids_and_types[source_item_uids_and_types_index];
    if (treated_items.find(source_item_uid) == treated_items.end()) {
      source_relation_info_wrk_copy.add(source_item_uids_and_types[source_item_uids_and_types_index + 1]); // item type
      source_relation_info_wrk_copy.add(source_item_uid); // item uid
      source_relation_info_wrk_copy.add(target_family->itemKind()); // family kind
      const auto& connected_items = source_to_target_uids[source_item_uid]; // get connected items
      source_relation_info_wrk_copy.add(connected_items.size()); // nb connected elements
      source_relation_info_wrk_copy.addRange(connected_items);
      // Padd this item info with family info : we added only one family, add void values for the other nb_connected_family families
      for (Integer connected_family_index = 0; connected_family_index < nb_connected_family; ++connected_family_index) {
        source_relation_info_wrk_copy.add(0); // family id (does not matter)
        source_relation_info_wrk_copy.add(0); // nb_connected_elements for this family
      }
    }
  }
  // Copy working array into destination array
  source_relation_info.resize(source_relation_info_wrk_copy.size());
  std::copy(source_relation_info_wrk_copy.begin(), source_relation_info_wrk_copy.end(), source_relation_info.begin());
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
Int64 DynamicMeshIncrementalBuilder::
_findFaceUniqueId(Int64ConstArrayView work_face_sorted_nodes, NodeInFaceSet& face_nodes_set)
{
  // check if first node exist
  Integer index = 0;
  //  return _findFaceInFaceNodesSet(face_nodes_set,index,work_face_sorted_nodes,std::make_shared<NodeInFace>(NULL_ITEM_ID));
  return _findFaceInFaceNodesSet(face_nodes_set, index, work_face_sorted_nodes, NodeInFacePtr(NULL_ITEM_ID));
}
 
/*---------------------------------------------------------------------------*/
 
Int64 DynamicMeshIncrementalBuilder::
_findFaceInFaceNodesSet(const NodeInFaceSet& face_nodes_set, Integer index, Int64ConstArrayView face_nodes, NodeInFacePtr node)
{
  if (index < face_nodes.size()) {
    auto found_node = std::find(face_nodes_set.begin(), face_nodes_set.end(), NodeInFacePtr(face_nodes[index]));
    if (found_node == face_nodes_set.end())
      return node->faceUid();
    else
      return _findFaceInFaceNodesSet((*found_node)->nextNodeSet(), ++index, face_nodes, *found_node);
  }
  else
    return node->faceUid();
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_addFaceNodes(NodeInFaceSet& face_nodes_set, Int64ConstArrayView face_nodes, Int64 face_uid)
{
  Integer index = 0;
  //  _addFaceInFaceNodesSet(face_nodes_set, index,face_nodes, std::make_shared<NodeInFace>(NULL_ITEM_ID), face_uid);
  _addFaceInFaceNodesSet(face_nodes_set, index, face_nodes, NodeInFacePtr(NULL_ITEM_ID), face_uid);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_addFaceInFaceNodesSet(NodeInFaceSet& face_nodes_set, Integer index, Int64ConstArrayView face_nodes, NodeInFacePtr node, Int64 face_uid)
{
  if (index < face_nodes.size()) {
    //      auto next_node = std::make_shared<NodeInFace>(face_nodes[index]);
    auto next_node = _insertNode(face_nodes_set, face_nodes[index]);
    //      debug() << "Add node " << face_nodes[index] << " in set " << &face_nodes_set;
    //      debug() << "set size " << face_nodes_set.size();
    _addFaceInFaceNodesSet(next_node->nextNodeSet(), ++index, face_nodes, next_node, face_uid);
    //      else
    //        _addFaceInFaceNodesSet((*insertion_return.first)->nextNodeSet(),++index,face_nodes,*insertion_return.first,face_uid); // pbe du const. Change from set to map ?
  }
  else {
    node->setFaceUid(face_uid);
    //      debug() << "Set face uid " << face_uid << " for node " << node->m_uid;
  }
}
 
DynamicMeshIncrementalBuilder::NodeInFacePtr&
DynamicMeshIncrementalBuilder::_insertNode(NodeInFaceSet& face_nodes_set, Int64 inserted_node_uid)
{
  NodeInFacePtr new_node(inserted_node_uid);
  auto found_node = std::find(face_nodes_set.begin(), face_nodes_set.end(), new_node);
  if (found_node == face_nodes_set.end()) {
    face_nodes_set.push_back(std::move(new_node));
    return face_nodes_set.back();
  }
  else
    return *found_node;
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addParentCells(const ItemVectorView& items)
{
  const Integer nb_cell = items.size();
 
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
    m_one_mesh_item_adder->addOneParentItem(items[i_cell], IK_Cell);
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

void DynamicMeshIncrementalBuilder::
addHChildrenCells(Cell hParent_cell, Integer nb_cell, Int64ConstArrayView cells_infos,
                  Integer sub_domain_id, Int32ArrayView cells,
                  bool allow_build_face)
{
  ItemTypeMng* itm = m_item_type_mng;
  CellFamily& cell_family = m_mesh->trueCellFamily();
 
  debug() << "[DynamicMeshIncrementalBuilder::addHChildrenCells] ADD CELLS mesh=" << m_mesh->name() << " nb_cell=" << nb_cell;
  Integer cells_infos_index = 0;
  bool add_to_cells = cells.size() != 0;
  if (add_to_cells && nb_cell != cells.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'cells' has to have same size as number of cells");
  for (Integer i_cell = 0; i_cell < nb_cell; ++i_cell) {
    debug(Trace::Highest) << "\t\t[DynamicMeshIncrementalBuilder::addHChildrenCells]cell " << i_cell << "/" << nb_cell;
 
    ItemTypeId item_type_id{ (Int16)cells_infos[cells_infos_index] };
    debug(Trace::Highest) << "\t\t[DynamicMeshIncrementalBuilder::addHChildrenCells]cells_infos[" << cells_infos_index << "]=" << cells_infos[cells_infos_index] << ", type_id=" << item_type_id;
    ++cells_infos_index;
 
    Int64 cell_unique_id = cells_infos[cells_infos_index];
    debug(Trace::Highest) << "\t\t[DynamicMeshIncrementalBuilder::addHChildrenCells]cells_infos[" << cells_infos_index << "]=" << cells_infos[cells_infos_index] << ", uid=" << cell_unique_id;
    ++cells_infos_index;
 
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    Integer current_cell_nb_node = it->nbLocalNode();
    debug(Trace::Highest) << "\t\t[DynamicMeshIncrementalBuilder::addHChildrenCells]DM ADD_CELL uid=" << cell_unique_id << " type_id=" << item_type_id
                          << " nb_node=" << current_cell_nb_node;
    Int64ConstArrayView current_cell_nodes_uid(current_cell_nb_node, &cells_infos[cells_infos_index]);
    for (Integer i = 0; i < current_cell_nb_node; ++i)
      debug(Trace::Highest) << "\t\t\t[DynamicMeshIncrementalBuilder::addHChildrenCells]DM NODE uid=" << current_cell_nodes_uid[i];
 
    ItemInternal* cell = m_one_mesh_item_adder->addOneCell(item_type_id,
                                                           cell_unique_id,
                                                           sub_domain_id,
                                                           current_cell_nodes_uid,
                                                           allow_build_face);
 
    cell_family._addParentCellToCell(cell, hParent_cell);
    if (add_to_cells)
      cells[i_cell] = cell->localId();
    cells_infos_index += current_cell_nb_node;
  }
  cell_family._addChildrenCellsToCell(hParent_cell, cells);
 
  debug() << "[DynamicMeshIncrementalBuilder::addHChildrenCells] done";
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addParentItems(const ItemVectorView& items, const eItemKind submesh_kind)
{
  const Integer nb_item = items.size();
 
  for (Integer i_item = 0; i_item < nb_item; ++i_item) {
    m_one_mesh_item_adder->addOneParentItem(items[i_item], submesh_kind, false);
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addNodes(Int64ConstArrayView nodes_uid, Integer owner, Int32ArrayView nodes)
{
  Integer nb_node_to_add = nodes_uid.size();
  bool add_to_nodes = nodes.size() != 0;
  if (add_to_nodes && nb_node_to_add != nodes.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'nodes' has to have same size as number of nodes");
  for (Integer i_node = 0; i_node < nb_node_to_add; ++i_node) {
    ItemInternal* node = m_one_mesh_item_adder->addOneNode(nodes_uid[i_node], owner);
    if (add_to_nodes)
      nodes[i_node] = node->localId();
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addNodes2(Int64ConstArrayView nodes_uid, Integer owner, Int32ArrayView nodes)
{
  Integer nb_node_to_add = nodes_uid.size();
  bool add_to_nodes = nodes.size() != 0;
  if (add_to_nodes && nb_node_to_add != nodes.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'nodes' has to have same size as number of nodes");
  ItemDataList item_info_list;
  ItemData& node_data = item_info_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()),
                                                nb_node_to_add, 2 * nb_node_to_add + 1, nodes, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), owner);
  Int64Array& node_infos2 = node_data.itemInfos();
  // Copy node_info : to decrease the footprint of the copy, use references instead of int64
  _fillNodeNewInfo(nodes_uid, node_infos2);
 
  addItems(item_info_list);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillNodeNewInfo(Int64ConstArrayView node_uids, Int64ArrayView node_infos2)
{
  node_infos2[0] = 0; // nb_connected_families
  Integer index = 0;
  for (auto node_uid : node_uids) {
    node_infos2[2 * index + 1] = IT_Vertex; // type
    node_infos2[2 * index + 2] = node_uid; // id
    index++;
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addItems(ItemDataList& item_info_list)
{
  // Add items : item construction done from leaves to root
  _addItemsOrRelations(item_info_list, IItemFamilyNetwork::InverseTopologicalOrder);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addItems(ItemDataList& item_info_list, ItemDataList& item_relation_info_list)
{
  if (item_info_list.size() == 0 || item_relation_info_list.size() == 0)
    return;
  addItems(item_info_list);
  addRelations(item_relation_info_list);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addRelations(ItemDataList& item_relation_list)
{
  // Add relations : items are already added. Do it from root to leaves
  _addItemsOrRelations(item_relation_list, IItemFamilyNetwork::TopologicalOrder);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_addItemsOrRelations(ItemDataList& info_list, IItemFamilyNetwork::eSchedulingOrder family_graph_traversal_order)
{
  // Add relations : items are already added. Do it from root to leaves
  if (info_list.size() == 0)
    return;
  m_mesh->itemFamilyNetwork()->schedule([&](IItemFamily* family) {
    ItemData i_infos = info_list[family->itemKind()];
    this->addFamilyItems(i_infos);
  },
                                        family_graph_traversal_order); // item construction done from leaves to root
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addFamilyItems(ItemData& item_data)
{
  if (item_data.nbItems() == 0)
    return;
  bool add_to_items = item_data.itemLids().size() != 0;
  if (add_to_items && item_data.nbItems() != item_data.itemLids().size())
    throw ArgumentException(A_FUNCINFO,
                            "return array containing item lids has to have be of size number of items");
  // Prepare info and call OneMeshItemAdder->addOneItem
  Int64 item_uid;
  Int64ConstArrayView item_infos = item_data.itemInfos();
  Integer nb_connected_family = CheckedConvert::toInteger(item_infos[0]);
  if (nb_connected_family == 0)
    return;
  Int64UniqueArray connectivity_info;
  Integer nb_item_info = 0;
  Integer item_index = 0;
  for (Integer info_index = 1; info_index < item_data.itemInfos().size();) {
    ItemTypeId item_type_id{ (Int16)item_infos[info_index++] }; // item_type
    item_uid = item_infos[info_index++]; // item_uid
    Integer item_info_begin_index = info_index;
    for (Integer connected_family_index = 0; connected_family_index < nb_connected_family; ++connected_family_index) {
      Integer current_index = CheckedConvert::toInteger(item_infos[info_index + 1]);
      Integer nb_item_info_increment = 2 + current_index;
      nb_item_info += nb_item_info_increment; // family_id , nb_connected_elements
      info_index += nb_item_info_increment; // pointing on next family id
    }
    ItemInternal* item = m_one_mesh_item_adder->addOneItem2(item_data.itemFamily(),
                                                            item_data.itemFamilyModifier(),
                                                            item_type_id,
                                                            item_uid,
                                                            item_data.itemOwners()[item_index],
                                                            item_data.subDomainId(),
                                                            nb_connected_family,
                                                            item_infos.subView(item_info_begin_index, nb_item_info));
    if (add_to_items)
      item_data.itemLids()[item_index++] = item->localId();
    nb_item_info = 0;
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addFaces(Integer nb_face, Int64ConstArrayView faces_infos,
         Int32 rank, Int32ArrayView faces)
{
  ItemTypeMng* itm = m_item_type_mng;
 
  bool add_to_faces = faces.size() != 0;
  if (add_to_faces && nb_face != faces.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'faces' has to have same size as number of faces");
 
  Integer faces_infos_index = 0;
  for (Integer i_face = 0; i_face < nb_face; ++i_face) {
 
    ItemTypeId item_type_id = ItemTypeId::fromInteger(faces_infos[faces_infos_index]);
    ++faces_infos_index;
    Int64 face_unique_id = faces_infos[faces_infos_index];
    ++faces_infos_index;
 
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
 
    Integer current_face_nb_node = it->nbLocalNode();
    Int64ConstArrayView nodes_uid(current_face_nb_node, &faces_infos[faces_infos_index]);
    faces_infos_index += current_face_nb_node;
 
    ItemInternal* face = m_one_mesh_item_adder->addOneFace(item_type_id, face_unique_id, rank, nodes_uid);
 
    if (add_to_faces)
      faces[i_face] = face->localId();
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addFaces2(Integer nb_face, Int64ConstArrayView faces_infos,
          Integer sub_domain_id, Int32ArrayView faces)
{
  bool add_to_faces = faces.size() != 0;
  if (add_to_faces && nb_face != faces.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'faces' has to have same size as number of faces");
  // Prepare face infos 2
  Integer face_infos2_size = faces_infos.size() + 1 + 2 * nb_face; // additive info nb_connected_family + nb_face * (family_id + nb_connected_element)
  ItemDataList item_info_list;
  ItemData& face_data = item_info_list.itemData(Integer(m_mesh->faceFamily()->itemKind()),
                                                nb_face, face_infos2_size, faces, &mesh()->trueFaceFamily(), &mesh()->trueFaceFamily(), sub_domain_id);
 
  Int64ArrayView face_infos2 = face_data.itemInfos().view();
  Int64UniqueArray node_uids;
  Int64UniqueArray edge_uids;
 
  _fillFaceInfo2(nb_face, faces_infos, face_infos2, node_uids);
 
  // Prepare edge data if needed
  //  if (m_has_edge) {
  //    Integer nb_edge_to_add = edge_uids.size();
  //    Int32UniqueArray edge_lids(nb_edge_to_add);
  //    ItemData& edge_data = item_info_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()),
  //          nb_edge_to_add,2*nb_edge_to_add+1,edge_lids,&mesh()->trueNodeFamily(),&mesh()->trueNodeFamily(),sub_domain_id);
  //    Int64Array& edge_infos2 = edge_data.itemInfos();
  //    _fillEdgeInfo2(nb_edge_to_add,edge_uids,edge_infos2);
  //  }
 
  // Prepare node data (mutualize)
  Integer nb_node_to_add = node_uids.size();
  Int32UniqueArray node_lids(nb_node_to_add);
  ItemData& node_data = item_info_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()),
                                                nb_node_to_add, 2 * nb_node_to_add + 1, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  Int64Array& node_infos2 = node_data.itemInfos();
  _fillNodeNewInfo(node_uids, node_infos2);
 
  // Launch node and face creation
  addItems(item_info_list);
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addFaces3(Integer nb_face, Int64ConstArrayView faces_infos,
          Integer sub_domain_id, Int32ArrayView faces)
{
  bool add_to_faces = faces.size() != 0;
  if (add_to_faces && nb_face != faces.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'faces' has to have same size as number of faces");
  ItemDataList item_data_list;
  ItemDataList item_relation_data_list;
  // item info_size cannot be guessed
  Int64UniqueArray edges_infos;
  Int64UniqueArray nodes_infos;
  Int64UniqueArray node_uids;
  Int32UniqueArray edge_lids;
  Int32UniqueArray node_lids;
  Integer nb_edge = 0;
  Integer nb_node = 0;
  std::map<std::pair<Int64, Int64>, Int64> edge_uid_map;
 
  // Fill classical info
  _fillEdgeInfo(nb_edge, nb_face, edges_infos, faces_infos, edge_uid_map);
  _fillNodeInfo(nb_node, nb_face, nodes_infos, faces_infos);
 
  // Face info New
  ItemData& face_data = item_data_list.itemData(Integer(m_mesh->faceFamily()->itemKind()), nb_face, 0, faces, &mesh()->trueFaceFamily(), &mesh()->trueFaceFamily(), sub_domain_id);
  _fillFaceNewInfoNew(nb_face, faces_infos, face_data.itemInfos(), edge_uid_map);
 
  // Edge info New
  if (hasEdge()) {
    Integer edge_info_size = 1 + nb_edge * 6; //New info = Nb_connected_family + for each edge : type, uid, connected_family_kind, nb_node_connected, first_node_uid, second_node_uid
    ItemData& edge_data = item_data_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()), nb_edge, edge_info_size, edge_lids, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
    edge_lids.resize(item_data_list[m_mesh->edgeFamily()->itemKind()].nbItems());
    _fillEdgeNewInfoNew(nb_edge, edges_infos, edge_data.itemInfos()); // reprendre fillEdgeInfo et voir l'appel depuis add Edges + attention ordre des noeuds,
    ItemData& edge_relation_data = item_relation_data_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()), nb_edge, edge_info_size, edge_lids, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
    _initEdgeRelationInfo(edge_relation_data, face_data, edges_infos); // edge-face relation
  }
 
  // Node info New
  Integer node_info_size = 1 + nb_node * 2; //New info = Nb_connected_family + for each node : type, uid (no connected family)
  ItemData& node_data = item_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, node_info_size, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  node_lids.resize(item_data_list[m_mesh->nodeFamily()->itemKind()].nbItems());
  _fillNodeNewInfo(nodes_infos, node_data.itemInfos());
  ItemData& node_relation_data = item_relation_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, node_info_size, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  _initNodeRelationInfo(node_relation_data, face_data, nodes_infos); // node-face relation
 
  // Launch node, face and edges (not compulsory) creation
  addItems(item_data_list, item_relation_data_list);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillFaceNewInfoNew(Integer nb_face, Int64ConstArrayView faces_infos, Int64Array& face_infos2, const std::map<std::pair<Int64, Int64>, Int64>& edge_uid_map)
{
  ItemTypeMng* itm = m_item_type_mng;
  Integer nb_connected_family = hasEdge() ? 2 : 1;
  Integer face_infos2_size_approx = 1 + 2 * (faces_infos.size() + 2 * nb_face); // supposes as many faces as edges...
  face_infos2.reserve(face_infos2_size_approx);
  Int64UniqueArray work_face_sorted_nodes;
  Int64UniqueArray work_face_orig_nodes;
  Integer faces_infos_index = 0;
  //  Integer face_infos2_index = 0;
  std::set<Int64> node_uids_set;
  face_infos2.add(nb_connected_family); // nb_connected_families nodes +/- Edges !!
  // Fill face_infos2 from faces_infos
  for (Integer i_face = 0; i_face < nb_face; ++i_face) {
    Integer current_face_type = (Integer)faces_infos[faces_infos_index++];
    Integer current_face_uid = (Integer)faces_infos[faces_infos_index++];
    face_infos2.add(current_face_type); // type
    face_infos2.add(current_face_uid); // uid
    //--Node connectivity
    face_infos2.add(mesh()->nodeFamily()->itemKind()); // connected_family_id
    ItemTypeInfo* it = itm->typeFromId(current_face_type);
    Integer current_face_nb_node = it->nbLocalNode();
    face_infos2.add(current_face_nb_node); // nb_connected_nodes
    // Nodes are not necessarily sorted (if caller is addFaces...)
    Int64ConstArrayView current_face_node_uids(current_face_nb_node, &faces_infos[faces_infos_index]);
    work_face_orig_nodes.resize(current_face_nb_node);
    work_face_sorted_nodes.resize(current_face_nb_node);
    work_face_orig_nodes.copy(current_face_node_uids);
    mesh_utils::reorderNodesOfFace(work_face_orig_nodes, work_face_sorted_nodes);
    face_infos2.addRange(work_face_sorted_nodes); // connected node uids
    faces_infos_index += current_face_nb_node;
    //--Edge Connectivity
    if (hasEdge()) {
      face_infos2.add(mesh()->edgeFamily()->itemKind());
      face_infos2.add(it->nbLocalEdge()); // nb_connected_edges
      for (int edge_index = 0; edge_index < it->nbLocalEdge(); ++edge_index) {
        Int64 first_node = work_face_sorted_nodes[it->localEdge(edge_index).beginNode()];
        Int64 second_node = work_face_sorted_nodes[it->localEdge(edge_index).endNode()];
        if (first_node > second_node)
          std::swap(first_node, second_node); // edge may be oriented negatively in the face
        auto edge_it = edge_uid_map.find(std::make_pair(first_node, second_node));
        if (edge_it == edge_uid_map.end())
          ARCANE_FATAL("Do not find edge with nodes {0}-{1} in edge uid map. Exiting",
                       work_face_sorted_nodes[it->localEdge(edge_index).beginNode()],
                       work_face_sorted_nodes[it->localEdge(edge_index).endNode()]);
        face_infos2.add(edge_it->second); // connected edge uid
      }
    }
  }
}
 
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillFaceInfo2(Integer nb_face, Int64ConstArrayView faces_infos, Int64ArrayView face_infos2, Int64Array& node_uids)
{
  ItemTypeMng* itm = m_item_type_mng;
  Integer faces_infos_index = 0;
  Integer face_infos2_index = 0;
  face_infos2[face_infos2_index++] = 1; // nb_connected_families (node only)
  Int64UniqueArray work_face_sorted_nodes;
  Int64UniqueArray work_face_orig_nodes;
  std::set<Int64> node_uids_set;
  // Fill face_infos2 from faces_infos
  for (Integer i_face = 0; i_face < nb_face; ++i_face) {
 
    Integer item_type_id = (Integer)faces_infos[faces_infos_index];
    face_infos2[face_infos2_index++] = faces_infos[faces_infos_index++]; // type
    face_infos2[face_infos2_index++] = faces_infos[faces_infos_index++]; // uid
    face_infos2[face_infos2_index++] = mesh()->nodeFamily()->itemKind(); // connected_family_id
 
    ItemTypeInfo* it = itm->typeFromId(item_type_id);
    Integer current_face_nb_node = it->nbLocalNode();
    face_infos2[face_infos2_index++] = current_face_nb_node; // nb_connected_items
    Int64ConstArrayView current_face_node_uids(current_face_nb_node, &faces_infos[faces_infos_index]);
    work_face_orig_nodes.resize(current_face_nb_node);
    work_face_sorted_nodes.resize(current_face_nb_node);
    work_face_orig_nodes.copy(current_face_node_uids);
    mesh_utils::reorderNodesOfFace(work_face_orig_nodes, work_face_sorted_nodes);
    face_infos2.subView(face_infos2_index, current_face_nb_node).copy(work_face_sorted_nodes); // connected node uids
    faces_infos_index += current_face_nb_node;
    face_infos2_index += current_face_nb_node;
    node_uids_set.insert(current_face_node_uids.begin(), current_face_node_uids.end());
  }
  node_uids.resize(node_uids_set.size());
  Integer index = 0;
  for (Int64 node_uid : node_uids_set)
    node_uids[index++] = node_uid;
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addEdges(Integer nb_edge, Int64ConstArrayView edge_infos,
         Integer sub_domain_id, Int32ArrayView edges)
{
  bool add_to_edges = edges.size() != 0;
  if (add_to_edges && nb_edge != edges.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'edges' has to have same size as number of edges");
 
  Integer edge_info_index = 0;
  for (Integer i_edge = 0; i_edge < nb_edge; ++i_edge) {
 
    Int64 edge_unique_id = edge_infos[edge_info_index];
    ++edge_info_index;
 
    Int64ConstArrayView nodes_uid(2, &edge_infos[edge_info_index]);
    edge_info_index += 2;
 
    ItemInternal* edge = m_one_mesh_item_adder->addOneEdge(edge_unique_id, sub_domain_id, nodes_uid);
 
    if (add_to_edges)
      edges[i_edge] = edge->localId();
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
addEdges2(Integer nb_edge, Int64ConstArrayView edge_infos,
          Integer sub_domain_id, Int32ArrayView edges)
{
  bool add_to_edges = edges.size() != 0;
  if (add_to_edges && nb_edge != edges.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'edges' has to have same size as number of edges");
 
  // Prepare face infos 2
  Integer edge_infos2_size = edge_infos.size() + 1 + 2 * nb_edge; // additive info nb_connected_family + nb_face * (family_id + nb_connected_element)
  ItemDataList item_info_list;
  ItemData& edge_data = item_info_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()),
                                                nb_edge, edge_infos2_size, edges, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
 
  Int64ArrayView edge_infos2 = edge_data.itemInfos().view();
  Int64UniqueArray node_uids;
 
  _fillEdgeInfo2(nb_edge, edge_infos, edge_infos2, node_uids);
 
  // Prepare node data (mutualize)
  Integer nb_node_to_add = node_uids.size();
  Int32UniqueArray node_lids(nb_node_to_add);
  ItemData& node_data = item_info_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()),
                                                nb_node_to_add, 2 * nb_node_to_add + 1, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  Int64Array& node_infos2 = node_data.itemInfos();
  _fillNodeNewInfo(node_uids, node_infos2);
 
  // Launch node and face creation
  addItems(item_info_list);
}
 
void DynamicMeshIncrementalBuilder::
addEdges3(Integer nb_edge, Int64ConstArrayView edges_infos,
          Integer sub_domain_id, Int32ArrayView edges)
{
  bool add_to_edges = edges.size() != 0;
  if (add_to_edges && nb_edge != edges.size())
    throw ArgumentException(A_FUNCINFO,
                            "return array 'edges' has to have same size as number of edges");
  ItemDataList item_data_list;
  ItemDataList item_relation_data_list;
  // item info_size cannot be guessed
  Int64UniqueArray nodes_infos;
  Int32UniqueArray node_lids;
  Integer nb_node = 0;
 
  // Fill classical info
  _fillNodeInfoFromEdge(nb_node, nb_edge, nodes_infos, edges_infos);
 
  // Edge new info : edge data stores edge uids and dependency connectivities
  ItemData& edge_data = item_data_list.itemData(Integer(m_mesh->edgeFamily()->itemKind()), nb_edge, 0, edges, &mesh()->trueEdgeFamily(), &mesh()->trueEdgeFamily(), sub_domain_id);
  _fillEdgeNewInfoNew(nb_edge, edges_infos, edge_data.itemInfos());
 
  // Node new info & relationsm
  ItemData& node_data = item_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, 0, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  node_lids.resize(nb_node);
  _fillNodeNewInfo(nodes_infos, node_data.itemInfos());
  ItemData& node_relations_data = item_relation_data_list.itemData(Integer(m_mesh->nodeFamily()->itemKind()), nb_node, 0, node_lids, &mesh()->trueNodeFamily(), &mesh()->trueNodeFamily(), sub_domain_id);
  _initNodeRelationInfo(node_relations_data, edge_data, nodes_infos); // node-edge relation
 
  // Launch node and edges creation
  addItems(item_data_list, item_relation_data_list);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_fillEdgeInfo2(Integer nb_edge, Int64ConstArrayView edges_infos, Int64ArrayView edge_infos2, Int64Array& node_uids)
{
  Integer edges_infos_index = 0;
  Integer edge_infos2_index = 0;
  std::set<Int64> node_uids_set;
 
  // Fill edge_infos2 from edges_infos
  edge_infos2[edge_infos2_index++] = 1; // nb_connected_families (node only)
 
  for (Integer i_edge = 0; i_edge < nb_edge; ++i_edge) {
    edge_infos2[edge_infos2_index++] = IT_Line2; // type
    edge_infos2[edge_infos2_index++] = edges_infos[edges_infos_index++]; // uid
    edge_infos2[edge_infos2_index++] = mesh()->nodeFamily()->itemKind(); // connected_family_id
    edge_infos2[edge_infos2_index++] = 2; // nb_connected_items Attention : ordre des noeuds !! TODO
    edge_infos2[edge_infos2_index++] = edges_infos[edges_infos_index]; // first connected node uid
    node_uids_set.insert(edges_infos[edges_infos_index++]);
    edge_infos2[edge_infos2_index++] = edges_infos[edges_infos_index]; // second connected node uid
    node_uids_set.insert(edges_infos[edges_infos_index++]);
  }
  node_uids.resize(node_uids_set.size());
  Integer index = 0;
  for (Int64 node_uid : node_uids_set)
    node_uids[index++] = node_uid;
}
 
void DynamicMeshIncrementalBuilder::
_fillEdgeNewInfoNew(Integer nb_edge, Int64ConstArrayView edges_infos, Int64ArrayView edges_new_infos)
{
  Integer edges_infos_index = 0;
  Integer edges_new_infos_index = 0;
 
  // Fill edge_infos2 from edges_infos
  edges_new_infos[edges_new_infos_index++] = 1; // nb_connected_families (node only)
 
  for (Integer i_edge = 0; i_edge < nb_edge; ++i_edge) {
    edges_new_infos[edges_new_infos_index++] = IT_Line2; // type
    edges_new_infos[edges_new_infos_index++] = edges_infos[edges_infos_index++]; // uid
    edges_new_infos[edges_new_infos_index++] = mesh()->nodeFamily()->itemKind(); // connected_family_id
    edges_new_infos[edges_new_infos_index++] = 2; // nb_connected_items
    Int64 first_node = edges_infos[edges_infos_index++];
    Int64 second_node = edges_infos[edges_infos_index++];
    if (first_node > second_node)
      std::swap(first_node, second_node);
    edges_new_infos[edges_new_infos_index++] = first_node; // first connected node uid
    edges_new_infos[edges_new_infos_index++] = second_node; // second connected node uid
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
readFromDump()
{
  // Recalculate the max uniqueId() of faces to know what value
  // to use in case of face creation.
  ItemInternalMap& faces_map = m_mesh->facesMap();
  Int64 max_uid = -1;
  faces_map.eachItem([&](Item face) {
    if (face.uniqueId() > max_uid)
      max_uid = face.uniqueId();
  });
  m_one_mesh_item_adder->setNextFaceUid(max_uid + 1);
 
  if (m_has_edge) {
    ItemInternalMap& edges_map = m_mesh->edgesMap();
    Int64 max_uid = -1;
    edges_map.eachItem([&](Item edge) {
      if (edge.uniqueId() > max_uid)
        max_uid = edge.uniqueId();
    });
    m_one_mesh_item_adder->setNextEdgeUid(max_uid + 1);
  }
 
  info(5) << "NEXT FACE UID mesh=" << m_mesh->name() << " Next=" << m_one_mesh_item_adder->nextFaceUid();
  info(5) << "NEXT EDGE UID mesh=" << m_mesh->name() << " Next=" << m_one_mesh_item_adder->nextEdgeUid();
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
printInfos()
{
  info() << "-- Mesh information (Arcane2):";
  info() << "Number of nodes   " << m_one_mesh_item_adder->nbNode();
  info() << "Number of edges   " << m_one_mesh_item_adder->nbEdge();
  info() << "Number of faces   " << m_one_mesh_item_adder->nbFace();
  info() << "Number of cells   " << m_one_mesh_item_adder->nbCell();
  info() << "-- Graph information (Arcane2):";
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
printStats(Int32 level)
{
  info(level) << "-- -- Statistics";
  info(level) << "Number of nodes after addition     &: " << m_one_mesh_item_adder->nbNode()
              << " hashmap=" << m_mesh->nodesMap().count();
  info(level) << "Number of edges after addition     : " << m_one_mesh_item_adder->nbEdge()
              << " hashmap=" << m_mesh->edgesMap().count();
  info(level) << "Number of faces after addition     : " << m_one_mesh_item_adder->nbFace()
              << " hashmap=" << m_mesh->facesMap().count();
  info(level) << "Number of cells after addition     : " << m_one_mesh_item_adder->nbCell()
              << " hashmap=" << m_mesh->cellsMap().count();
  info(level) << "--";
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void DynamicMeshIncrementalBuilder::
computeFacesUniqueIds()
{
  if (!m_face_unique_id_builder)
    m_face_unique_id_builder = new FaceUniqueIdBuilder(this);
  m_face_unique_id_builder->computeFacesUniqueIds();
 
  if (m_has_edge) {
    if (!m_edge_unique_id_builder)
      m_edge_unique_id_builder = new EdgeUniqueIdBuilder(this);
    m_edge_unique_id_builder->computeEdgesUniqueIds();
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
addGhostLayers(bool is_allocate)
{
  debug() << "Add one ghost layer";
  if (!m_ghost_layer_builder)
    m_ghost_layer_builder = new GhostLayerBuilder(this);
  m_ghost_layer_builder->addGhostLayers(is_allocate);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

void DynamicMeshIncrementalBuilder::
addGhostChildFromParent(Array<Int64>& ghost_cell_to_refine)
{
  debug() << "Add one ghost layer";
  if (!m_ghost_layer_builder)
    m_ghost_layer_builder = new GhostLayerBuilder(this);
  m_ghost_layer_builder->addGhostChildFromParent2(ghost_cell_to_refine);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
_removeNeedRemoveMarkedItems(ItemInternalMap& map, UniqueArray<Int32>& items_local_id)
{
  // Removal of links
  SharedArray<ItemInternal*> items_to_remove;
  items_to_remove.reserve(1000);
 
  map.eachItem([&](Item item) {
    impl::MutableItemBase mb_item = item.mutableItemBase();
    Integer f = mb_item.flags();
    if (f & ItemFlags::II_NeedRemove) {
      f &= ~ItemFlags::II_NeedRemove;
      mb_item.setFlags(f);
      items_local_id.add(item.localId());
    }
  });
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

void DynamicMeshIncrementalBuilder::
removeNeedRemoveMarkedItems()
{
  if (!m_mesh->useMeshItemFamilyDependencies()) {
 
    IItemFamily* links_family = m_mesh->findItemFamily(IK_DoF, GraphDoFs::linkFamilyName(), false, false);
    if (links_family) {
      info() << "Remove Items for family : " << links_family->name();
      links_family->removeNeedRemoveMarkedItems();
    }
 
    for (IItemFamily* family : m_mesh->itemFamilies()) {
      if (family->itemKind() != IK_DoF || family->name() == GraphDoFs::linkFamilyName())
        continue;
      info() << "Remove Items for family : " << family->name();
      family->removeNeedRemoveMarkedItems();
    }
    // Suppression of particles from the Particle family
 
    for (IItemFamilyCollection::Enumerator i(m_mesh->itemFamilies()); ++i;) {
      IItemFamily* family = *i;
      if (family->itemKind() == IK_Particle) {
        ParticleFamily* particle_family = dynamic_cast<ParticleFamily*>(family);
        ARCANE_CHECK_POINTER(particle_family);
        if (particle_family && particle_family->getEnableGhostItems() == true) {
          UniqueArray<Integer> lids_to_remove;
          lids_to_remove.reserve(1000);
 
          ItemInternalMap& particle_map = particle_family->itemsMap();
          particle_map.eachItem([&](Item item) {
            impl::MutableItemBase mb_item = item.mutableItemBase();
            Integer f = mb_item.flags();
            if (f & ItemFlags::II_NeedRemove) {
              f &= ~ItemFlags::II_NeedRemove;
              mb_item.setFlags(f);
              lids_to_remove.add(item.localId());
            }
          });
 
          info() << "Number of particles of family " << family->name() << " to remove: " << lids_to_remove.size();
          if (lids_to_remove.size() > 0)
            particle_family->removeParticles(lids_to_remove);
        }
      }
    }
 
    // Suppression of cells
    CellFamily& cell_family = m_mesh->trueCellFamily();
    UniqueArray<Int32> cells_to_remove;
    cells_to_remove.reserve(1000);
    _removeNeedRemoveMarkedItems(cell_family.itemsMap(), cells_to_remove);
 
    info() << "Number of cells to remove: " << cells_to_remove.size();
 
#ifdef ARCANE_DEBUG_DYNAMIC_MESH
    for (Integer i = 0, is = cells_to_remove.size(); i < is; ++i)
      info() << "remove cell with uid=" << cells_to_remove[i]->uniqueId()
             << ",lid=" << cells_to_remove[i]->localId()
             << ",owner=" << cells_to_remove[i]->owner();
#endif /* ARCANE_DEBUG_DYNAMIC_MESH */
 
    cell_family.removeCells(cells_to_remove);
  }
  // With ItemFamilyNetwork
  else {
    // handle families already in the network
    m_mesh->itemFamilyNetwork()->schedule([](IItemFamily* family) {
      family->removeNeedRemoveMarkedItems();
      // Remove items from family graph leaves to root
    },
                                          IItemFamilyNetwork::InverseTopologicalOrder);
    for (auto family : m_mesh->itemFamilies()) {
      // handle remaining families (particles, links, dual nodes & dof).
      // Will have no effect on the families already handled in the graph (since NeedRemove flag is reset)
      family->removeNeedRemoveMarkedItems();
    }
  }
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
setConnectivity(const Integer connectivity)
{
  if (connectivity == 0)
    ARCANE_FATAL("Undefined connectivity !");
  if (m_connectivity != 0)
    ARCANE_FATAL("Connectivity already set: cannot redefine it");
  m_connectivity = connectivity;
  m_has_edge = Connectivity::hasConnectivity(connectivity, Connectivity::CT_HasEdge);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
void DynamicMeshIncrementalBuilder::
resetAfterDeallocate()
{
  m_face_uid_pool = 0;
  m_edge_uid_pool = 0;
  m_one_mesh_item_adder->resetAfterDeallocate();
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
} // End namespace Arcane::mesh
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/