src/deletetetras.cpp

   1 //
   2 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   3 // +                                                                      +
   4 // + This file is part of enGrid.                                         +
   5 // +                                                                      +
   6 // + Copyright 2008,2009 Oliver Gloth                                     +
   7 // +                                                                      +
   8 // + enGrid is free software: you can redistribute it and/or modify       +
   9 // + it under the terms of the GNU General Public License as published by +
  10 // + the Free Software Foundation, either version 3 of the License, or    +
  11 // + (at your option) any later version.                                  +
  12 // +                                                                      +
  13 // + enGrid is distributed in the hope that it will be useful,            +
  14 // + but WITHOUT ANY WARRANTY; without even the implied warranty of       +
  15 // + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        +
  16 // + GNU General Public License for more details.                         +
  17 // +                                                                      +
  18 // + You should have received a copy of the GNU General Public License    +
  19 // + along with enGrid. If not, see <http://www.gnu.org/licenses/>.       +
  20 // +                                                                      +
  21 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  22 //
  23 #include "deletetetras.h"
  24
  25 void DeleteTetras::operate()
  26 {
  27   cout << "deleting tetrahedral cells" << endl;
  28   EG_VTKSP(vtkUnstructuredGrid, new_grid);
  29   QVector<vtkIdType> tetras, cells, nodes;
  30
  31   {
  32     int N = 0;
  33     foreach (vtkIdType id_cell, m_Part.getCells()) {
  34       if (m_Grid->GetCellType(id_cell) == VTK_TETRA) {
  35         ++N;
  36       }
  37     }
  38     tetras.resize(N);
  39     N = 0;
  40     foreach (vtkIdType id_cell, m_Part.getCells()) {
  41       if (m_Grid->GetCellType(id_cell) == VTK_TETRA) {
  42         tetras[N] = id_cell;
  43         ++N;
  44       }
  45     }
  46   }
  47
  48   getRestCells(m_Grid, tetras, cells);
  49   getNodesFromCells(cells, nodes, m_Grid);
  50   allocateGrid(new_grid, cells.size(), nodes.size());
  51   QVector<vtkIdType> old2new(m_Grid->GetNumberOfPoints(), -1);
  52   {
  53     vtkIdType id_new = 0;
  54     foreach (vtkIdType id_node, nodes) {
  55       vec3_t x;
  56       m_Grid->GetPoints()->GetPoint(id_node, x.data());
  57       new_grid ->GetPoints()->SetPoint(id_new, x.data());
  58       copyNodeData(m_Grid, id_node, new_grid, id_new);
  59       old2new[id_node] = id_new;
  60       ++id_new;
  61     }
  62   }
  63   foreach (vtkIdType id_cell, cells) {
  64     vtkIdType *pts, N_pts;
  65     m_Grid->GetCellPoints(id_cell, N_pts, pts);
  66     QVector<vtkIdType> new_pts(N_pts);
  67     for (int i = 0; i < N_pts; ++i) {
  68       new_pts[i] = old2new[pts[i]];
  69     }
  70     vtkIdType cellType = m_Grid->GetCellType(id_cell);
  71     vtkIdType id_new = new_grid->InsertNextCell(cellType, N_pts, new_pts.data());
  72     copyCellData(m_Grid, id_cell, new_grid, id_new);
  73   }
  74   makeCopy(new_grid, m_Grid);
  75 }
  76