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

  Program:   Visualization Toolkit
  Module:    vtkAppendPoints.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.

=========================================================================*/
// .NAME vtkAppendPoints - appends points of one or more vtkPolyData data sets
//
// .SECTION Description
// vtkAppendPoints is a filter that appends the points and assoicated data
// of one or more polygonal (vtkPolyData) datasets. This filter can optionally 
// add a new array marking the input index that the point came from.

// .SECTION See Also
// vtkAppendFilter vtkAppendPolyData

#ifndef __vtkAppendPoints_h
#define __vtkAppendPoints_h

#include "vtkPolyDataAlgorithm.h"

class VTK_INFOVIS_EXPORT vtkAppendPoints : public vtkPolyDataAlgorithm
{
public:
  static vtkAppendPoints *New();
  vtkTypeMacro(vtkAppendPoints,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Sets the output array name to fill with the input connection index
  // for each point. This provides a way to trace a point back to a
  // particular input. If this is NULL (the default), the array is not generated.
  vtkSetStringMacro(InputIdArrayName);
  vtkGetStringMacro(InputIdArrayName);

protected:
  vtkAppendPoints();
  ~vtkAppendPoints();

  // Usual data generation method
  virtual int RequestData(vtkInformation *, 
                          vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int, vtkInformation *);

  char* InputIdArrayName;

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

#endif