vtkImageAppend.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImageAppend.h,v $

  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 __vtkImageAppend_h
#define __vtkImageAppend_h


#include "vtkThreadedImageAlgorithm.h"

class VTK_IMAGING_EXPORT vtkImageAppend : public vtkThreadedImageAlgorithm
{
public:
  static vtkImageAppend *New();
  vtkTypeRevisionMacro(vtkImageAppend,vtkThreadedImageAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
  

  void SetInput(int num, vtkDataObject *input);
  void SetInput(vtkDataObject *input) { this->SetInput(0, input); };


  vtkDataObject *GetInput(int num);
  vtkDataObject *GetInput() { return this->GetInput(0); };

  int GetNumberOfInputs() { return this->GetNumberOfInputConnections(0); };


  vtkSetMacro(AppendAxis, int);
  vtkGetMacro(AppendAxis, int);
  

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

protected:
  vtkImageAppend();
  ~vtkImageAppend();

  int PreserveExtents;
  int AppendAxis;
  // Array holds the AppendAxisExtent shift for each input.
  int *Shifts;

  virtual int RequestInformation (vtkInformation *, 
                                  vtkInformationVector **,
                                  vtkInformationVector *);

  virtual int RequestUpdateExtent(vtkInformation *, 
                                  vtkInformationVector **,
                                  vtkInformationVector *);

  void ThreadedRequestData (vtkInformation* request,
                            vtkInformationVector** inputVector,
                            vtkInformationVector* outputVector,
                            vtkImageData ***inData, vtkImageData **outData,
                            int ext[6], int id);

  // see vtkAlgorithm for docs.
  virtual int FillInputPortInformation(int, vtkInformation*);

  void InitOutput(int outExt[6], vtkImageData *outData);

  void InternalComputeInputUpdateExtent(
    int *inExt, int *outExt, int *inWextent, int whichInput);
  
private:
  vtkImageAppend(const vtkImageAppend&);  // Not implemented.
  void operator=(const vtkImageAppend&);  // Not implemented.
};

#endif

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