itkRecursiveBSplineInterpolationWeightFunction.h

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 *  Copyright UMC Utrecht and contributors
 *
 *  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
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 *        http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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#ifndef __itkRecursiveBSplineInterpolationWeightFunction_h
#define __itkRecursiveBSplineInterpolationWeightFunction_h
 
#include "itkBSplineInterpolationWeightFunction.h"
 
#include "itkBSplineKernelFunction2.h"
#include "itkBSplineDerivativeKernelFunction2.h"
#include "itkBSplineSecondOrderDerivativeKernelFunction2.h"
 
namespace itk
{
template< unsigned int SplineOrder, unsigned int Dimension >
class GetConstNumberOfIndicesHack
{
public:
 
  typedef GetConstNumberOfIndicesHack< SplineOrder, Dimension - 1 > OneDimensionLess;
  itkStaticConstMacro( Value, unsigned int, ( SplineOrder + 1 ) * OneDimensionLess::Value );
};
 
template< unsigned int SplineOrder >
class GetConstNumberOfIndicesHack< SplineOrder, 0 >
{
public:
 
  itkStaticConstMacro( Value, unsigned int, 1 );
};
 
template< unsigned int SplineOrder, unsigned int Dimension >
class GetConstNumberOfWeightsHackRecursiveBSpline
{
public:
 
  itkStaticConstMacro( Value, unsigned int, ( SplineOrder + 1 ) * Dimension  );
};
 
template<
  typename TCoordRep           = float,
  unsigned int VSpaceDimension = 2,
  unsigned int VSplineOrder    = 3 >
class RecursiveBSplineInterpolationWeightFunction :
  public BSplineInterpolationWeightFunction< TCoordRep, VSpaceDimension, VSplineOrder >
{
public:
 
  typedef RecursiveBSplineInterpolationWeightFunction Self;
  typedef BSplineInterpolationWeightFunction<
    TCoordRep, VSpaceDimension, VSplineOrder >        Superclass;
  typedef SmartPointer< Self >                        Pointer;
  typedef SmartPointer< const Self >                  ConstPointer;
 
  itkNewMacro( Self );
 
  itkTypeMacro( RecursiveBSplineInterpolationWeightFunction, FunctionBase );
 
  itkStaticConstMacro( SpaceDimension, unsigned int, VSpaceDimension );
 
  itkStaticConstMacro( SplineOrder, unsigned int, VSplineOrder );
 
  typedef typename Superclass::WeightsType         WeightsType;
  typedef typename Superclass::IndexType           IndexType;
  typedef typename Superclass::SizeType            SizeType;
  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
  //typedef typename Superclass::
 
  typedef GetConstNumberOfWeightsHackRecursiveBSpline<
    itkGetStaticConstMacro( SplineOrder ),
    itkGetStaticConstMacro( SpaceDimension ) > GetConstNumberOfWeightsHackRecursiveBSplineType;
  itkStaticConstMacro( NumberOfWeights, unsigned int, GetConstNumberOfWeightsHackRecursiveBSplineType::Value );
  typedef GetConstNumberOfIndicesHack<
    itkGetStaticConstMacro( SplineOrder ),
    itkGetStaticConstMacro( SpaceDimension ) > GetConstNumberOfIndicesHackType;
  itkStaticConstMacro( NumberOfIndices, unsigned int, GetConstNumberOfIndicesHackType::Value );
 
  itkGetConstMacro( NumberOfIndices, unsigned int );
 
  WeightsType Evaluate( const ContinuousIndexType & index ) const override;
 
  void Evaluate( const ContinuousIndexType & index,
    WeightsType & weights, IndexType & startIndex ) const override;
 
  void EvaluateDerivative( const ContinuousIndexType & index,
    WeightsType & weights, const IndexType & startIndex ) const;
 
  void EvaluateSecondOrderDerivative( const ContinuousIndexType & index,
    WeightsType & weights, const IndexType & startIndex ) const;
 
protected:
 
  RecursiveBSplineInterpolationWeightFunction();
  ~RecursiveBSplineInterpolationWeightFunction() override {}
  void PrintSelf( std::ostream & os, Indent indent ) const override;
 
private:
 
  RecursiveBSplineInterpolationWeightFunction( const Self & ); // purposely not implemented
  void operator=( const Self & );                              // purposely not implemented
 
  unsigned int m_NumberOfWeights;
  unsigned int m_NumberOfIndices;
  SizeType     m_SupportSize;
 
  typedef BSplineKernelFunction2< itkGetStaticConstMacro( SplineOrder ) >                      KernelType;
  typedef BSplineDerivativeKernelFunction2< itkGetStaticConstMacro( SplineOrder ) >            DerivativeKernelType;
  typedef BSplineSecondOrderDerivativeKernelFunction2< itkGetStaticConstMacro( SplineOrder ) > SecondOrderDerivativeKernelType;
 
  typename KernelType::Pointer m_Kernel;
  typename DerivativeKernelType::Pointer m_DerivativeKernel;
  typename SecondOrderDerivativeKernelType::Pointer m_SecondOrderDerivativeKernel;
 
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkRecursiveBSplineInterpolationWeightFunction.hxx"
#endif
 
#endif