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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 itkComposeDisplacementFieldsImageFilter_h
#define itkComposeDisplacementFieldsImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkVectorInterpolateImageFunction.h"
namespace itk
{
/**
* \class ComposeDisplacementFieldsImageFilter
*
* \brief Compose two displacement fields.
*
* \author Nick Tustison
* \author Brian Avants
*
* \ingroup ITKDisplacementField
*
*/
template <typename TInputImage, typename TOutputImage = TInputImage>
class ITK_TEMPLATE_EXPORT ComposeDisplacementFieldsImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ComposeDisplacementFieldsImageFilter);
using Self = ComposeDisplacementFieldsImageFilter;
using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Extract dimension from input image. */
static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;
using InputFieldType = TInputImage;
using OutputFieldType = TOutputImage;
/** Image type alias support */
using PixelType = typename OutputFieldType::PixelType;
using VectorType = typename OutputFieldType::PixelType;
using RegionType = typename OutputFieldType::RegionType;
using IndexType = typename OutputFieldType::IndexType;
using PointType = typename OutputFieldType::PointType;
using SpacingType = typename OutputFieldType::SpacingType;
using OriginType = typename OutputFieldType::PointType;
using SizeType = typename OutputFieldType::SizeType;
using DirectionType = typename OutputFieldType::DirectionType;
/** Other type alias */
using RealType = typename VectorType::ComponentType;
using InterpolatorType = VectorInterpolateImageFunction<InputFieldType, RealType>;
/** Get the interpolator. */
itkGetModifiableObjectMacro(Interpolator, InterpolatorType);
/** Set the deformation field */
void
SetDisplacementField(const InputFieldType * field)
{
itkDebugMacro("setting displacement field to " << field);
if (field != this->GetInput(0))
{
this->SetInput(0, field);
this->Modified();
if (!this->m_Interpolator.IsNull())
{
this->m_Interpolator->SetInputImage(field);
}
}
}
/**
* Get the deformation field.
*/
const InputFieldType *
GetDisplacementField() const
{
return this->GetInput(0);
}
/** Set the warping field */
void
SetWarpingField(const InputFieldType * field)
{
itkDebugMacro("setting warping field to " << field);
if (field != this->GetInput(1))
{
this->SetInput(1, field);
}
}
/**
* Get the warping field.
*/
const InputFieldType *
GetWarpingField() const
{
return this->GetInput(1);
}
/* Set the interpolator. */
virtual void
SetInterpolator(InterpolatorType * interpolator);
protected:
/** Constructor */
ComposeDisplacementFieldsImageFilter();
/** Deconstructor */
~ComposeDisplacementFieldsImageFilter() override = default;
/** Standard print self function **/
void
PrintSelf(std::ostream & os, Indent indent) const override;
/** preprocessing function */
void
BeforeThreadedGenerateData() override;
/** Multithreaded function which generates the output field. */
void
DynamicThreadedGenerateData(const RegionType &) override;
private:
/** The interpolator. */
typename InterpolatorType::Pointer m_Interpolator{};
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkComposeDisplacementFieldsImageFilter.hxx"
#endif
#endif
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