vtkPolyDataToGraph.h

// This class converts all of the points in a vtkPolyData into vertices in a vtkGraph, and all
//  "edges" in a vtkPolyData (borders of polygons and vtkLines) into edges in a vtkGraph

#ifndef __vtkPolyDataToGraph_h
#define __vtkPolyDataToGraph_h

#include <vtkGraphAlgorithm.h>
#include <vtkSmartPointer.h>

class vtkPolyData;
class vtkIdList;

class vtkPolyDataToGraph : public vtkGraphAlgorithm
{
public:
  static vtkPolyDataToGraph *New();

protected:
  vtkPolyDataToGraph() {}
  ~vtkPolyDataToGraph() {}

  virtual int FillInputPortInformation(int port, vtkInformation *info);

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);

  int RequestDataObject(vtkInformation *vtkNotUsed(request),
                        vtkInformationVector **inputVector,
                        vtkInformationVector *outputVector);

private:
  vtkPolyDataToGraph(const vtkPolyDataToGraph &); // Not implemented.
  void operator=(const vtkPolyDataToGraph &);     // Not implemented.

  // should not be part of this class
  bool EdgeExists(vtkSmartPointer<vtkGraph> g, int pointID, int neighborID);
  void GetConnectedVertices(vtkSmartPointer<vtkPolyData> mesh, int seed, vtkSmartPointer<vtkIdList> connectedVertices);
};

#endif