src/libengrid/vtkEgEliminateShortEdges.h

   1 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   2 // +                                                                      +
   3 // + This file is part of enGrid.                                         +
   4 // +                                                                      +
   5 // + Copyright 2008-2014 enGits GmbH                                      +
   6 // +                                                                      +
   7 // + enGrid is free software: you can redistribute it and/or modify       +
   8 // + it under the terms of the GNU General Public License as published by +
   9 // + the Free Software Foundation, either version 3 of the License, or    +
  10 // + (at your option) any later version.                                  +
  11 // +                                                                      +
  12 // + enGrid is distributed in the hope that it will be useful,            +
  13 // + but WITHOUT ANY WARRANTY; without even the implied warranty of       +
  14 // + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        +
  15 // + GNU General Public License for more details.                         +
  16 // +                                                                      +
  17 // + You should have received a copy of the GNU General Public License    +
  18 // + along with enGrid. If not, see <http://www.gnu.org/licenses/>.       +
  19 // +                                                                      +
  20 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  21 #ifndef __vtkEgEliminateShortEdges_h
  22 #define __vtkEgEliminateShortEdges_h
  23
  24 class vtkEgEliminateShortEdges;
  25
  26 #include "vtkEgGridFilter.h"
  27
  28 #include <QVector>
  29
  30 /**
  31  * A VTK filter to remove elements with bad aspect ratios.
  32  * Currently this will only work with triangular surface grids.
  33  * There is also no error checking done -- yet -- which means
  34  * that the resulting grid has to be carefully looked at.
  35  * This filter has, however, proven to be useful in certain
  36  * cases.
  37  */
  38 class vtkEgEliminateShortEdges : public vtkEgGridFilter
  39 {
  40
  41 private: // attributes
  42
  43   QVector<vtkIdType> new_node_idx;
  44   QVector<vtkIdType> node_mapping;
  45   QVector<bool> delete_cell;
  46   double max_ratio;
  47   double max_length;
  48   int N_eliminated;
  49   vtkIdType N_new_points;
  50   vtkIdType N_new_cells;
  51
  52 public: // static methods
  53
  54   static vtkEgEliminateShortEdges* New();
  55
  56 public: // methods
  57
  58   void SetMaxRatio(double mr)  { max_ratio  = mr ; Modified(); };
  59   void SetMaxLength(double ml) { max_length = ml ; Modified(); };
  60
  61   int getNumEliminated() { return N_eliminated; };
  62
  63 protected: // methods
  64
  65   vtkEgEliminateShortEdges();
  66   ~vtkEgEliminateShortEdges() {};
  67   virtual void ExecuteEg();
  68
  69 private: // methods
  70
  71   vtkEgEliminateShortEdges (const vtkEgEliminateShortEdges&);
  72   void operator= (const vtkEgEliminateShortEdges&);
  73
  74   void CheckEdges();
  75   void CheckCells();
  76   void CopyPoints();
  77   void CopyCells();
  78
  79 };
  80
  81 #endif