vtkPolygonBuilder.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkPolygonBuilder.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkPolygonBuilder_h
#define vtkPolygonBuilder_h

#include "vtkCommonMiscModule.h" // For export macro
#include <map> //for private data members
#include <vector> // for private data members
#include <utility> //for private data members
#include "vtkType.h" //for basic types
#include <cstddef> //for size_t
#include "vtkObject.h"
#include "vtkIdList.h"

class vtkIdListCollection;

class VTKCOMMONMISC_EXPORT vtkPolygonBuilder
{
public:
  vtkPolygonBuilder();

  void InsertTriangle(vtkIdType* abc);

  void GetPolygons(vtkIdListCollection* polys);

  void Reset();

private:
  typedef std::pair<vtkIdType,vtkIdType> Edge;
  typedef std::map<Edge,size_t> EdgeHistogram;
  typedef std::multimap<vtkIdType,vtkIdType> EdgeMap;
  typedef std::vector<vtkIdType> Triangle;
  typedef std::vector<Triangle> Triangles;
  typedef std::map<vtkIdType, Triangles> TriangleMap;

  TriangleMap Tris;

  EdgeHistogram EdgeCounter;
  EdgeMap Edges;
};

#endif
// VTK-HeaderTest-Exclude: vtkPolygonBuilder.h