vtkImageDifference.h

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

  Program:   Visualization Toolkit
  Module:    vtkImageDifference.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 vtkImageDifference_h
#define vtkImageDifference_h

#include "vtkImagingCoreModule.h" // For export macro
#include "vtkThreadedImageAlgorithm.h"

class vtkImageDifferenceThreadData;
class vtkImageDifferenceSMPThreadLocal;

class VTKIMAGINGCORE_EXPORT vtkImageDifference : public vtkThreadedImageAlgorithm
{
public:
  static vtkImageDifference *New();
  vtkTypeMacro(vtkImageDifference,vtkThreadedImageAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  void SetImageConnection(vtkAlgorithmOutput* output)
  {
    this->SetInputConnection(1, output);
  }
  void SetImageData(vtkDataObject *image) {this->SetInputData(1,image);}
  vtkImageData *GetImage();

  double GetError() { return this->Error; }
  void GetError(double *e) { *e = this->GetError(); };

  double GetThresholdedError() { return this->ThresholdedError; }
  void GetThresholdedError(double *e) { *e = this->GetThresholdedError(); };


  vtkSetMacro(Threshold,int);
  vtkGetMacro(Threshold,int);


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


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

protected:
  vtkImageDifference();
  ~vtkImageDifference() {}

  // Parameters
  int AllowShift;
  int Threshold;
  int Averaging;

  // Outputs
  const char *ErrorMessage;
  double Error;
  double ThresholdedError;

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

  virtual void ThreadedRequestData(vtkInformation *request,
                                   vtkInformationVector **inputVector,
                                   vtkInformationVector *outputVector,
                                   vtkImageData ***inData,
                                   vtkImageData **outData,
                                   int extent[6], int threadId);

  // Used for vtkMultiThreader operation.
  vtkImageDifferenceThreadData *ThreadData;

  // Used for vtkSMPTools operation.
  vtkImageDifferenceSMPThreadLocal *SMPThreadData;

private:
  vtkImageDifference(const vtkImageDifference&) VTK_DELETE_FUNCTION;
  void operator=(const vtkImageDifference&) VTK_DELETE_FUNCTION;

  friend class vtkImageDifferenceSMPFunctor;
};

#endif