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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 itkDisplacementFieldTransformParametersAdaptor_h
#define itkDisplacementFieldTransformParametersAdaptor_h
#include "itkTransformParametersAdaptor.h"
namespace itk
{
/** \class DisplacementFieldTransformParametersAdaptor
* \brief DisplacementFieldTransformParametersAdaptor is a helper class intended to
* definition.
*
* The fixed parameters store the following information:
* field size
* field origin
* field spacing
* field direction
* During multiresolution image registration it is often desired to also increase
* the displacement field resolution for greater flexibility in optimizing the
* transform. As defined in the base class, the user can change the resolution via
*
\code
transformAdaptor->SetTransform( transform );
transformAdaptor->SetRequiredFixedParameters( fixedParameters );
transformAdaptor->AdaptTransformParameters();
\endcode
*
* or the user can use the more intuitive API for setting the fixed parameters.
* E.g., often the user will want to maintain the same transform domain spatial
* extent but only increase the field size and decrease the spacing. This can
* be done as follows:
*
\code
transformAdaptor->SetTransform( transform );
transformAdaptor->SetRequiredOrigin( displacementField->GetOrigin() );
transformAdaptor->SetRequiredDirection( displacementField->GetDirection() );
transformAdaptor->SetRequiredSize( requiredSize );
transformAdaptor->SetRequiredSpacing( requiredSpacing );
transformAdaptor->AdaptTransformParameters();
\endcode
*
* \author Nick Tustison
* \author Brian Avants
*
* \ingroup ITKRegistrationCommon
*/
template <typename TTransform>
class ITK_TEMPLATE_EXPORT DisplacementFieldTransformParametersAdaptor : public TransformParametersAdaptor<TTransform>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DisplacementFieldTransformParametersAdaptor);
/** Standard class type aliases. */
using Self = DisplacementFieldTransformParametersAdaptor;
using Superclass = TransformParametersAdaptor<TTransform>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** New macro for creation of through a Smart Pointer. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(DisplacementFieldTransformParametersAdaptor);
/** Typedefs associated with the transform */
using TransformType = TTransform;
using TransformPointer = typename TransformType::Pointer;
using FixedParametersType = typename TransformType::FixedParametersType;
using FixedParametersValueType = typename TransformType::FixedParametersValueType;
using ParametersType = typename TransformType::ParametersType;
using ParametersValueType = typename TransformType::ParametersValueType;
using DisplacementFieldType = typename TransformType::DisplacementFieldType;
using PointType = typename DisplacementFieldType::PointType;
using SizeType = typename DisplacementFieldType::SizeType;
using DirectionType = typename DisplacementFieldType::DirectionType;
using SpacingType = typename DisplacementFieldType::SpacingType;
/** Dimension of parameters. */
static constexpr unsigned int SpaceDimension = TransformType::Dimension;
/** Alternative method for setting the required size. */
void
SetRequiredSize(const SizeType &);
/** Get the required size. */
virtual const SizeType
GetRequiredSize() const;
/** Alternative method for setting the required origin. */
void
SetRequiredOrigin(const PointType &);
/** Get the required origin. */
virtual const PointType
GetRequiredOrigin() const;
/** Alternative method for setting the required spacing. */
void
SetRequiredSpacing(const SpacingType &);
/** Get the required spacing. */
virtual const SpacingType
GetRequiredSpacing() const;
/** Alternative method for setting the required direction. */
void
SetRequiredDirection(const DirectionType &);
/** Get the required direction. */
virtual const DirectionType
GetRequiredDirection() const;
/** Initialize the transform using the specified fixed parameters */
void
AdaptTransformParameters() override;
protected:
DisplacementFieldTransformParametersAdaptor();
~DisplacementFieldTransformParametersAdaptor() override = default;
}; // class DisplacementFieldTransformParametersAdaptor
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkDisplacementFieldTransformParametersAdaptor.hxx"
#endif
#endif /* itkDisplacementFieldTransformParametersAdaptor_h */
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