vtkEgEliminateShortEdges.h

   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 #ifndef __vtkEgEliminateShortEdges_h
  24 #define __vtkEgEliminateShortEdges_h
  25
  26 class vtkEgEliminateShortEdges;
  27
  28 #include "vtkEgGridFilter.h"
  29
  30 #include <QVector>
  31
  32 /**
  33  * A VTK filter to remove elements with bad aspect ratios.
  34  * Currently this will only work with triangular surface grids.
  35  * There is also no error checking done -- yet -- which means
  36  * that the resulting grid has to be carefully looked at.
  37  * This filter has, however, proven to be useful in certain
  38  * cases.
  39  */
  40 class vtkEgEliminateShortEdges : public vtkEgGridFilter
  41 {
  42
  43 private: // attributes
  44
  45   QVector<vtkIdType> new_node_idx;
  46   QVector<vtkIdType> node_mapping;
  47   QVector<bool> delete_cell;
  48   double max_ratio;
  49   double max_length;
  50   int N_eliminated;
  51   vtkIdType N_new_points;
  52   vtkIdType N_new_cells;
  53
  54 public: // static methods
  55
  56   static vtkEgEliminateShortEdges* New();
  57
  58 public: // methods
  59
  60   void SetMaxRatio(double mr)  { max_ratio  = mr ; Modified(); };
  61   void SetMaxLength(double ml) { max_length = ml ; Modified(); };
  62
  63   int GetNumEliminated() { return N_eliminated; };
  64
  65 protected: // methods
  66
  67   vtkEgEliminateShortEdges();
  68   ~vtkEgEliminateShortEdges() {};
  69   virtual void ExecuteEg();
  70
  71 private: // methods
  72
  73   vtkEgEliminateShortEdges (const vtkEgEliminateShortEdges&);
  74   void operator= (const vtkEgEliminateShortEdges&);
  75
  76   void CheckEdges();
  77   void CheckCells();
  78   void CopyPoints();
  79   void CopyCells();
  80
  81 };
  82
  83 #endif