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

  Program:   Visualization Toolkit
  Module:    vtkAppendFilter.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 vtkAppendFilter_h
#define vtkAppendFilter_h

#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"

class vtkDataSetAttributes;
class vtkDataSetCollection;

class VTKFILTERSCORE_EXPORT vtkAppendFilter : public vtkUnstructuredGridAlgorithm
{
public:
  static vtkAppendFilter *New();

  vtkTypeMacro(vtkAppendFilter,vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

//BTX

  vtkDataSet *GetInput(int idx);
  vtkDataSet *GetInput()
    {return this->GetInput( 0 );}
//ETX


  vtkGetMacro(MergePoints,int);


  vtkSetMacro(MergePoints,int);

  vtkBooleanMacro(MergePoints,int);

  void RemoveInputData(vtkDataSet *in);

  vtkDataSetCollection *GetInputList();


  vtkSetClampMacro(OutputPointsPrecision, int, SINGLE_PRECISION, DEFAULT_PRECISION);
  vtkGetMacro(OutputPointsPrecision, int);

protected:
  vtkAppendFilter();
  ~vtkAppendFilter();

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

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

  // list of data sets to append together.
  // Here as a convenience.  It is a copy of the input array.
  vtkDataSetCollection *InputList;

  //If true we will attempt to merge points. Must also not have
  //ghost cells defined.
  int MergePoints;

  int OutputPointsPrecision;

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

  // Get all input data sets that have points, cells, or both.
  // Caller must delete the returned vtkDataSetCollection.
  vtkDataSetCollection* GetNonEmptyInputs(vtkInformationVector ** inputVector);

  void AppendArrays(int attributesType,
                    vtkInformationVector **inputVector,
                    vtkIdType* globalIds,
                    vtkUnstructuredGrid* output);
};


#endif