itkImageTransformer.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
/*=========================================================================
 *
 *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
 *
 *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 *
 *  For complete copyright, license and disclaimer of warranty information
 *  please refer to the NOTICE file at the top of the ITK source tree.
 *
 *=========================================================================*/
#ifndef __itkImageTransformer_h
#define __itkImageTransformer_h

#include "itkProcessObject.h"
#include "itkImage.h"

namespace itk
{
template< class TInputImage >
class ITK_EXPORT ImageTransformer:public ProcessObject
{
public:
  typedef ImageTransformer           Self;
  typedef ProcessObject              Superclass;
  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  typedef DataObject::Pointer DataObjectPointer;

  itkTypeMacro(ImageTransformer, ProcessObject);

  typedef TInputImage                         InputImageType;
  typedef typename InputImageType::Pointer    InputImagePointer;
  typedef typename InputImageType::RegionType InputImageRegionType;
  typedef typename InputImageType::PixelType  InputImagePixelType;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);

  using Superclass::SetInput;
  virtual void SetInput(const InputImageType *image);
  virtual void SetInput(unsigned int, const TInputImage *image);
  const InputImageType * GetInput(void) const;
  InputImageType * GetInput(void);
  const InputImageType * GetInput(unsigned int idx) const;

  virtual void PushBackInput(const InputImageType *image);
  virtual void PopBackInput();
  virtual void PushFrontInput(const InputImageType *image);
  virtual void PopFrontInput();

protected:
  ImageTransformer();
  virtual ~ImageTransformer() {}

  virtual void GenerateInputRequestedRegion();

  virtual void GenerateData();

  virtual
  void ThreadedGenerateData(const InputImageRegionType & inputRegionForThread,
                            ThreadIdType threadId);

  virtual void AllocateOutputs();

  virtual void BeforeThreadedGenerateData() {}

  virtual void AfterThreadedGenerateData() {}

  virtual
  unsigned int SplitRequestedRegion(unsigned int i, unsigned int num, InputImageRegionType & splitRegion);

  static ITK_THREAD_RETURN_TYPE ThreaderCallback(void *arg);

  void PushBackInput(const DataObject *input)
  { Superclass::PushBackInput(input); }
  void PushFrontInput(const DataObject *input)
  { Superclass::PushFrontInput(input); }

  struct ThreadStruct {
    Pointer Filter;
  };

private:
  ImageTransformer(const Self &);    //purposely not implemented
  void operator=(const Self &); //purposely not implemented
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkImageTransformer.hxx"
#endif

#endif