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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkImageToImageFilter.txx,v $
Language: C++
Date: $Date: 2006-02-09 14:57:22 $
Version: $Revision: 1.36 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
Portions of this code are covered under the VTK copyright.
See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 notices for more information.
=========================================================================*/
#ifndef _itkImageToImageFilter_txx
#define _itkImageToImageFilter_txx
#include "itkImageToImageFilter.h"
namespace itk
{
/**
*
*/
template <class TInputImage, class TOutputImage>
ImageToImageFilter<TInputImage,TOutputImage>
::ImageToImageFilter()
{
// Modify superclass default values, can be overridden by subclasses
this->SetNumberOfRequiredInputs(1);
}
/**
*
*/
template <class TInputImage, class TOutputImage>
ImageToImageFilter<TInputImage,TOutputImage>
::~ImageToImageFilter()
{
}
/**
*
*/
template <class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::SetInput(const InputImageType *input)
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(0,
const_cast< InputImageType * >( input ) );
}
/**
* Connect one of the operands for pixel-wise addition
*/
template <class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::SetInput( unsigned int index, const TInputImage * image )
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(index,
const_cast< TInputImage *>( image ) );
}
/**
*
*/
template <class TInputImage, class TOutputImage>
const typename ImageToImageFilter<TInputImage,TOutputImage>::InputImageType *
ImageToImageFilter<TInputImage,TOutputImage>
::GetInput(void)
{
if (this->GetNumberOfInputs() < 1)
{
return 0;
}
return static_cast<const TInputImage * >
(this->ProcessObject::GetInput(0) );
}
/**
*
*/
template <class TInputImage, class TOutputImage>
const typename ImageToImageFilter<TInputImage,TOutputImage>::InputImageType *
ImageToImageFilter<TInputImage,TOutputImage>
::GetInput(unsigned int idx)
{
return static_cast< const TInputImage * >
(this->ProcessObject::GetInput(idx));
}
//-----------------------------------------------------------------------
//
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
for (unsigned int idx = 0; idx < this->GetNumberOfInputs(); ++idx)
{
if (this->GetInput(idx))
{
// Check whether the input is an image of the appropriate
// dimension (use ProcessObject's version of the GetInput()
// method since it returns the input as a pointer to a
// DataObject as opposed to the subclass version which
// static_casts the input to an TInputImage).
typedef ImageBase<InputImageDimension> ImageBaseType;
typename ImageBaseType::ConstPointer constInput
= dynamic_cast< ImageBaseType const *>( this->ProcessObject::GetInput(idx) );
// If not an image, skip it, and let a subclass of
// ImageToImageFilter handle this input.
if (constInput.IsNull() )
{
continue;
}
// Input is an image, cast away the constness so we can set
// the requested region.
InputImagePointer input =
const_cast< TInputImage * > ( this->GetInput(idx) );
// Use the function object RegionCopier to copy the output region
// to the input. The default region copier has default implementations
// to handle the cases where the input and output are the same
// dimension, the input a higher dimension than the output, and the
// input a lower dimension than the output.
InputImageRegionType inputRegion;
this->CallCopyOutputRegionToInputRegion(inputRegion, this->GetOutput()->GetRequestedRegion());
input->SetRequestedRegion( inputRegion );
}
}
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::CallCopyOutputRegionToInputRegion(InputImageRegionType &destRegion,
const OutputImageRegionType &srcRegion)
{
OutputToInputRegionCopierType regionCopier;
regionCopier(destRegion, srcRegion);
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::CallCopyInputRegionToOutputRegion(OutputImageRegionType &destRegion,
const InputImageRegionType &srcRegion)
{
InputToOutputRegionCopierType regionCopier;
regionCopier(destRegion, srcRegion);
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::PushBackInput(const InputImageType *input)
{
// Forward to the protected method in the superclass
this->ProcessObject::PushBackInput(input);
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::PopBackInput()
{
// Forward to the protected method in the superclass
this->ProcessObject::PopBackInput();
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::PushFrontInput(const InputImageType *input)
{
// Forward to the protected method in the superclass
this->ProcessObject::PushFrontInput(input);
}
template<class TInputImage, class TOutputImage>
void
ImageToImageFilter<TInputImage,TOutputImage>
::PopFrontInput()
{
// Forward to the protected method in the superclass
this->ProcessObject::PopFrontInput();
}
} // end namespace itk
#endif
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