---

Graphics/vtkAppendPolyData.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkAppendPolyData.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkAppendPolyData_h
#define __vtkAppendPolyData_h

#include "vtkPolyDataToPolyDataFilter.h"

class vtkCellArray;
class vtkDataArray;
class vtkPoints;
class vtkPolyData;

class VTK_GRAPHICS_EXPORT vtkAppendPolyData : public vtkPolyDataToPolyDataFilter
{
public:
  static vtkAppendPolyData *New();

  vtkTypeRevisionMacro(vtkAppendPolyData,vtkPolyDataToPolyDataFilter);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(UserManagedInputs,int);
  vtkGetMacro(UserManagedInputs,int);
  vtkBooleanMacro(UserManagedInputs,int);

  void AddInput(vtkPolyData *);

  void RemoveInput(vtkPolyData *);


  vtkPolyData *GetInput(int idx);
  vtkPolyData *GetInput() { return this->GetInput( 0 ); };

  void SetNumberOfInputs(int num);

  // Set Nth input, should only be used when UserManagedInputs is true.
  void SetInputByNumber(int num, vtkPolyData *input);


  vtkSetMacro(ParallelStreaming, int); 
  vtkGetMacro(ParallelStreaming, int); 
  vtkBooleanMacro(ParallelStreaming, int); 

protected:
  vtkAppendPolyData();
  ~vtkAppendPolyData();

  // Flag for selecting parallel streaming behavior
  int ParallelStreaming;

  // Usual data generation method
  void Execute();

  void ComputeInputUpdateExtents(vtkDataObject *output);

  // An efficient way to append data/cells.
  void AppendData(vtkDataArray *dest, vtkDataArray *src, vtkIdType offset);
  void AppendDifferentPoints(vtkDataArray *dest, vtkDataArray *src,
                             vtkIdType offset);
  vtkIdType *AppendCells(vtkIdType *pDest, vtkCellArray *src,
                         vtkIdType offset);

 private:
  // hide the superclass' AddInput() from the user and the compiler
  void AddInput(vtkDataObject *)
    { vtkErrorMacro( << "AddInput() must be called with a vtkPolyData not a vtkDataObject."); };
  void RemoveInput(vtkDataObject *input)
    { this->vtkProcessObject::RemoveInput(input);
    this->vtkProcessObject::SqueezeInputArray();};
  int UserManagedInputs;
private:
  vtkAppendPolyData(const vtkAppendPolyData&);  // Not implemented.
  void operator=(const vtkAppendPolyData&);  // Not implemented.
};

#endif

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