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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 itkImageDuplicator_hxx
#define itkImageDuplicator_hxx
#include "itkImageAlgorithm.h"
namespace itk
{
template <typename TInputImage>
void
ImageDuplicator<TInputImage>::Update()
{
if (!m_InputImage)
{
itkExceptionMacro("Input image has not been connected");
}
// Update only if the input image has been modified
const ModifiedTimeType t1 = m_InputImage->GetPipelineMTime();
const ModifiedTimeType t2 = m_InputImage->GetMTime();
const ModifiedTimeType t = (t1 > t2 ? t1 : t2);
if (t == m_InternalImageTime)
{
return; // No need to update
}
// Cache the timestamp
m_InternalImageTime = t;
// Allocate the image
m_DuplicateImage = ImageType::New();
m_DuplicateImage->CopyInformation(m_InputImage);
m_DuplicateImage->SetRequestedRegion(m_InputImage->GetRequestedRegion());
m_DuplicateImage->SetBufferedRegion(m_InputImage->GetBufferedRegion());
m_DuplicateImage->Allocate();
typename ImageType::RegionType region = m_InputImage->GetBufferedRegion();
ImageAlgorithm::Copy(m_InputImage.GetPointer(), m_DuplicateImage.GetPointer(), region, region);
}
template <typename TInputImage>
void
ImageDuplicator<TInputImage>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
itkPrintSelfObjectMacro(InputImage);
itkPrintSelfObjectMacro(DuplicateImage);
os << indent
<< "InternalImageTime: " << static_cast<typename NumericTraits<ModifiedTimeType>::PrintType>(m_InternalImageTime)
<< std::endl;
}
} // end namespace itk
#endif
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