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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 itkBSplineTransformInitializer_h
#define itkBSplineTransformInitializer_h
#include "itkObject.h"
#include "itkObjectFactory.h"
namespace itk
{
/** \class BSplineTransformInitializer
* \brief BSplineTransformInitializer is a helper class intended to
* initialize the control point grid such that it has a physically consistent
* definition.
* It sets the transform domain origin, physical dimensions and direction from
* information obtained from the image. It also sets the mesh size if asked
* to do so by calling SetTransformDomainMeshSize() before calling
* InitializeTransform().
*
* \author Luis Ibanez
* \author Nick Tustison
*
* \ingroup ITKTransform
*/
template <typename TTransform, typename TImage>
class ITK_TEMPLATE_EXPORT BSplineTransformInitializer : public Object
{
public:
ITK_DISALLOW_COPY_AND_MOVE(BSplineTransformInitializer);
/** Standard class type aliases. */
using Self = BSplineTransformInitializer;
using Superclass = Object;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** New macro for creation of through a Smart Pointer. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(BSplineTransformInitializer);
/** Type of the transform to initialize. */
using TransformType = TTransform;
/** Types defined from the input image traits. */
using ImageType = TImage;
using ImagePointer = typename ImageType::ConstPointer;
using IndexType = typename ImageType::IndexType;
using ImagePointType = typename ImageType::PointType;
using ImagePointCoordinateType = typename ImagePointType::CoordRepType;
using ImagePointCoordRepType = ImagePointCoordinateType;
/** Types defined from transform traits. */
using TransformPointer = typename TransformType::Pointer;
using RegionType = typename TransformType::RegionType;
using SizeType = typename RegionType::SizeType;
using SpacingType = typename TransformType::SpacingType;
using OriginType = typename TransformType::OriginType;
using DirectionType = typename TransformType::DirectionType;
using PhysicalDimensionsType = typename TransformType::PhysicalDimensionsType;
using MeshSizeType = typename TransformType::MeshSizeType;
using SpacingComponentType = typename SpacingType::ComponentType;
/** Dimension of parameters. */
static constexpr unsigned int SpaceDimension = TransformType::SpaceDimension;
/** Set/Get the transform to be initialized. */
itkGetConstObjectMacro(Transform, TransformType);
itkSetObjectMacro(Transform, TransformType);
/** Set/Get the image to initialize the domain. */
itkGetConstObjectMacro(Image, ImageType);
itkSetConstObjectMacro(Image, ImageType);
/** Allow the user to set the mesh size of the transform via the initializer,
* even though the initializer does not do anything with that information.
* Default size is 1^ImageDimension. */
itkGetConstMacro(TransformDomainMeshSize, MeshSizeType);
void
SetTransformDomainMeshSize(const MeshSizeType);
/** Initialize the transform using the specified transformation domain. */
virtual void
InitializeTransform() const;
protected:
BSplineTransformInitializer() = default;
~BSplineTransformInitializer() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
private:
ImagePointer m_Image{};
TransformPointer m_Transform{};
MeshSizeType m_TransformDomainMeshSize{ MeshSizeType::Filled(1) };
bool m_SetTransformDomainMeshSizeViaInitializer{ false };
}; // class BSplineTransformInitializer
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkBSplineTransformInitializer.hxx"
#endif
#endif /* itkBSplineTransformInitializer_h */
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