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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.
*
*=========================================================================*/
#ifndef itkFullToHalfHermitianImageFilter_hxx
#define itkFullToHalfHermitianImageFilter_hxx
#include "itkFullToHalfHermitianImageFilter.h"
#include "itkImageAlgorithm.h"
#include "itkProgressReporter.h"
namespace itk
{
template< typename TInputImage >
FullToHalfHermitianImageFilter< TInputImage >
::FullToHalfHermitianImageFilter()
{
this->SetActualXDimensionIsOdd(false);
}
template< typename TInputImage >
void
FullToHalfHermitianImageFilter< TInputImage >
::GenerateOutputInformation()
{
// Call the superclass' implementation of this method
Superclass::GenerateOutputInformation();
// Get pointers to the input and output
typename InputImageType::ConstPointer inputPtr = this->GetInput();
typename OutputImageType::Pointer outputPtr = this->GetOutput();
if ( !inputPtr || !outputPtr )
{
return;
}
const typename InputImageType::SizeType & inputSize =
inputPtr->GetLargestPossibleRegion().GetSize();
const typename InputImageType::IndexType & inputStartIndex =
inputPtr->GetLargestPossibleRegion().GetIndex();
typename OutputImageType::SizeType outputSize;
typename OutputImageType::IndexType outputStartIndex;
for ( unsigned int i = 0; i < OutputImageType::ImageDimension; i++ )
{
outputSize[i] = inputSize[i];
outputStartIndex[i] = inputStartIndex[i];
}
outputSize[0] = ( inputSize[0] / 2 ) + 1;
typename OutputImageType::RegionType outputLargestPossibleRegion;
outputLargestPossibleRegion.SetSize( outputSize );
outputLargestPossibleRegion.SetIndex( outputStartIndex );
outputPtr->SetLargestPossibleRegion( outputLargestPossibleRegion );
this->SetActualXDimensionIsOdd( inputSize[0] % 2 != 0 );
}
template< typename TInputImage >
void
FullToHalfHermitianImageFilter< TInputImage >
::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
// Get pointers to the input and output
typename InputImageType::Pointer inputPtr =
const_cast< InputImageType * >( this->GetInput() );
if ( inputPtr )
{
inputPtr->SetRequestedRegionToLargestPossibleRegion();
}
}
template< typename TInputImage >
void
FullToHalfHermitianImageFilter< TInputImage >
::ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId)
{
// Get pointers to the input and output.
typename InputImageType::ConstPointer inputPtr = this->GetInput();
typename OutputImageType::Pointer outputPtr = this->GetOutput();
if ( !inputPtr || !outputPtr )
{
return;
}
// We don't have a nice progress to report, but at least this simple line
// reports the beginning and the end of the process.
ProgressReporter progress(this, threadId, 1);
// Copy the non-reflected region.
ImageAlgorithm::Copy( inputPtr.GetPointer(), outputPtr.GetPointer(),
outputRegionForThread, outputRegionForThread );
}
} // end namespace itk
#endif // itkFullToHalfHermitianImageFilter_hxx
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