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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#ifndef itkFFTShiftImageFilter_hxx
#define itkFFTShiftImageFilter_hxx
namespace itk
{
template <typename TInputImage, typename TOutputImage>
FFTShiftImageFilter<TInputImage, TOutputImage>::FFTShiftImageFilter()
{
m_Inverse = false;
}
template <typename TInputImage, typename TOutputImage>
void
FFTShiftImageFilter<TInputImage, TOutputImage>::GenerateData()
{
// The size of the image is needed to compute the shift.
const SizeType size = this->GetOutput()->GetLargestPossibleRegion().GetSize();
// Compute the shift.
typename Superclass::OffsetType shift;
for (unsigned int i = 0; i < ImageDimension; ++i)
{
shift[i] = (size[i] / 2);
if (m_Inverse)
{
shift[i] = -shift[i];
}
}
this->m_Shift = shift;
this->Superclass::GenerateData();
}
template <typename TInputImage, typename TOutputImage>
void
FFTShiftImageFilter<TInputImage, TOutputImage>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Inverse: " << m_Inverse << std::endl;
}
} // end namespace itk
#endif
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