src/seligairfoilreader.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
  24 #include "seligairfoilreader.h"
  25 #include "vtkEgPolyDataToUnstructuredGridFilter.h"
  26
  27 #include <vtkDelaunay2D.h>
  28
  29 SeligAirfoilReader::SeligAirfoilReader()
  30 {
  31   setFormat("Selig airfoil data file (*.dat *.DAT)");
  32 }
  33
  34 void SeligAirfoilReader::operate()
  35 {
  36   try {
  37     readInputFileName("");
  38     if (isValid()) {
  39       QFile file(getFileName());
  40       file.open(QIODevice::ReadOnly | QIODevice::Text);
  41       QTextStream f(&file);
  42       f.readLine();
  43       EG_VTKSP(vtkPolyData, poly);
  44       double read_value;
  45       int num_upper, num_lower;
  46       f >> read_value;
  47       num_upper = int(read_value);
  48       f >> read_value;
  49       num_lower = int(read_value);
  50       int num_nodes = num_lower + num_upper - 1;
  51       QVector<vec3_t> coord(num_nodes, vec3_t(0,0,0));
  52       for (int i = 0; i < num_upper; ++i) {
  53         f >> coord[i][0] >> coord[i][1];
  54       }
  55       double dummy;
  56       f >> dummy;
  57       f >> dummy;
  58       for (int i = num_nodes - 1; i >= num_upper; --i) {
  59         f >> coord[i][0] >> coord[i][1];
  60       }
  61       EG_VTKSP(vtkPoints, points);
  62       points->SetNumberOfPoints(num_nodes);
  63       poly->SetPoints(points);
  64       poly->Allocate(num_nodes);
  65       for (vtkIdType id_node = 0; id_node < num_nodes; ++id_node) {
  66         poly->GetPoints()->SetPoint(id_node, coord[id_node].data());
  67       }
  68       for (vtkIdType id_node = 0; id_node < num_nodes; ++id_node) {
  69         vtkIdType pts[2];
  70         pts[0] = id_node;
  71         if (id_node < num_nodes-1) {
  72           pts[1] = id_node + 1;
  73         } else {
  74           pts[1] = 0;
  75         }
  76         poly->InsertNextCell(VTK_LINE, 2, pts);
  77       }
  78
  79       EG_VTKSP(vtkDelaunay2D, tri);
  80       tri->SetInput(poly);
  81       tri->SetSource(poly);
  82       EG_VTKSP(vtkEgPolyDataToUnstructuredGridFilter, poly2ug);
  83       poly2ug->SetInput(tri->GetOutput());
  84       poly2ug->Update();
  85       makeCopy(poly2ug->GetOutput(), m_Grid);
  86       UpdateNodeIndex(m_Grid);
  87       UpdateCellIndex(m_Grid);
  88     }
  89   } catch (Error err) {
  90     err.display();
  91   }
  92 }
  93