otbGenericInterpolateImageFunction.h

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/*
 * Copyright (C) 2005-2024 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 otbGenericInterpolateImageFunction_h
#define otbGenericInterpolateImageFunction_h
 
#include "itkInterpolateImageFunction.h"
#include "itkConstNeighborhoodIterator.h"
#include "itkConstantBoundaryCondition.h"
 
namespace otb
{
 
template <class TInputImage, class TFunction, class TBoundaryCondition = itk::ZeroFluxNeumannBoundaryCondition<TInputImage>, class TCoordRep = double>
class ITK_EXPORT GenericInterpolateImageFunction : public itk::InterpolateImageFunction<TInputImage, TCoordRep>
{
public:
  typedef GenericInterpolateImageFunction Self;
  typedef itk::InterpolateImageFunction<TInputImage, TCoordRep> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  itkTypeMacro(GenericInterpolateImageFunction, itk::InterpolateImageFunction);
 
  itkNewMacro(Self);
 
  typedef typename Superclass::OutputType     OutputType;
  typedef typename Superclass::InputImageType InputImageType;
 
  // itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
 
  typedef typename Superclass::IndexType    IndexType;
  typedef typename InputImageType::SizeType SizeType;
  typedef typename Superclass::RealType     RealType;
  typedef TFunction                         FunctionType;
  typedef itk::ConstNeighborhoodIterator<InputImageType, TBoundaryCondition> IteratorType;
 
  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
 
  itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
 
  OutputType EvaluateAtContinuousIndex(const ContinuousIndexType& index) const override;
 
  virtual void SetRadius(unsigned int rad);
  virtual typename itk::InterpolateImageFunction<TInputImage, TCoordRep>::SizeType GetRadius() const
  {
    auto rad = m_Function.GetRadius();
    typename itk::InterpolateImageFunction<TInputImage, TCoordRep>::SizeType size({rad,rad});
    return size;
  }
  // unsigned int GetRadius() { return this->GetFunction().GetRadius(); };
 
  // Don't have to be used here, just declared for the inheritance classes.
  // virtual void SetWindowSize(unsigned int win){ m_WindowSize = win; };
 
  virtual FunctionType& GetFunction(void)
  {
    return m_Function;
  }
 
  virtual void Initialize();
 
  itkSetMacro(NormalizeWeight, bool);
  itkGetMacro(NormalizeWeight, bool);
 
protected:
  GenericInterpolateImageFunction();
  ~GenericInterpolateImageFunction() override;
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
  void Modified(void) const override;
 
  virtual void ResetOffsetTable();
 
  virtual void InitializeTables();
 
  virtual void FillWeightOffsetTable();
 
private:
  GenericInterpolateImageFunction(const Self&) = delete;
  void operator=(const Self&) = delete;
  // unsigned int m_Radius;
  // Constant to store twice the radius
  unsigned int m_WindowSize;
 
  FunctionType m_Function;
 
  unsigned int m_ImageDimension;
 
  mutable unsigned int m_OffsetTableSize;
 
  mutable unsigned int* m_OffsetTable;
 
  mutable unsigned int** m_WeightOffsetTable;
 
  mutable bool m_TablesHaveBeenGenerated;
 
  bool m_NormalizeWeight;
};
 
} // end namespace itk
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbGenericInterpolateImageFunction.hxx"
#endif
 
#endif