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Program: Visualization Toolkit
Module: vtkImageToImageFilter.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkImageToImageFilter - Generic filter that has one input of type vtkImageData
// .SECTION Description
// vtkImageToImageFilter is a filter superclass that hides much of the
// pipeline complexity. It handles breaking the pipeline execution
// into smaller extents so that the vtkImageData limits are observed. It
// also provides support for multithreading. If you don't need any of this
// functionality, consider using vtkSimpleImageToImageFilter instead.
// .SECTION Warning
// This used to be the parent class for most imaging filter in VTK4.x, now
// this role has been replaced by vtkImageAlgorithm. You should consider
// using vtkImageAlgorithm instead, when writing filter for VTK5 and above.
// This class was kept to ensure full backward compatibility.
// .SECTION See also
// vtkSimpleImageToImageFilter vtkImageSpatialFilter vtkImageAlgorithm
#ifndef __vtkImageToImageFilter_h
#define __vtkImageToImageFilter_h
#include "vtkImageSource.h"
class vtkMultiThreader;
class VTK_FILTERING_EXPORT vtkImageToImageFilter : public vtkImageSource
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the Input of a filter.
virtual void SetInput(vtkImageData *input);
vtkImageData *GetInput();
// Description:
// Obsolete feature - do not use.
void SetBypass( int ) {};
void BypassOn() {};
void BypassOff() {};
// Description:
// If the subclass does not define an Execute method, then the task
// will be broken up, multiple threads will be spawned, and each thread
// will call this method. It is public so that the thread functions
// can call this method.
virtual void ThreadedExecute(vtkImageData *inData,
vtkImageData *outData,
int extent[6], int threadId);
// Description:
// Get/Set the number of threads to create when rendering
vtkSetClampMacro( NumberOfThreads, int, 1, VTK_MAX_THREADS );
vtkGetMacro( NumberOfThreads, int );
void SetInputMemoryLimit(int)
{vtkErrorMacro( << "SetInputMemoryLimit is obsolete: Use a vtkImageDataStreamer instead!" );};
long GetInputMemoryLimit()
{vtkErrorMacro( << "GetInputMemoryLimit is obsolete: Use a vtkImageDataStreamer instead!" ); return 0;};
// Description:
// Putting this here until I merge graphics and imaging streaming.
virtual int SplitExtent(int splitExt[6], int startExt[6],
int num, int total);
vtkMultiThreader *Threader;
int Bypass;
int BypassWasOn;
int NumberOfThreads;
// This is called by the superclass.
void ExecuteInformation();
// This is the method you should override.
virtual void ExecuteInformation(vtkImageData *inData, vtkImageData *outData);
// This is called by the superclass.
// This is the method you should override.
void ExecuteData(vtkDataObject *output);
// This also copies other arrays from point and cell data from input to output.
virtual vtkImageData *AllocateOutputData(vtkDataObject *out);
// The method that starts the multithreading
void MultiThread(vtkImageData *input, vtkImageData *output);
void ComputeInputUpdateExtents( vtkDataObject *output );
virtual void ComputeInputUpdateExtent(int inExt[6], int outExt[6]);
char *InputScalarsSelection;
virtual int FillInputPortInformation(int, vtkInformation*);
vtkImageToImageFilter(const vtkImageToImageFilter&); // Not implemented.
void operator=(const vtkImageToImageFilter&); // Not implemented.