otbMetaImageFunction.h

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/*
 * Copyright (C) 2005-2022 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 otbMetaImageFunction_h
#define otbMetaImageFunction_h
 
#include "itkFunctionBase.h"
#include "itkPoint.h"
#include "itkVariableLengthVector.h"
#include "OTBImageBaseExport.h"
 
#include <vector>
 
namespace otb
{
template <class TOutputPrecision = double, class TCoordRep = double>
class OTBImageBase_EXPORT_TEMPLATE MetaImageFunction : public itk::FunctionBase<itk::Point<TCoordRep, 2>, itk::VariableLengthVector<TOutputPrecision>>
{
public:
  // Standard class typedefs
  typedef MetaImageFunction Self;
  typedef itk::FunctionBase<itk::Point<TCoordRep, 2>, itk::VariableLengthVector<TOutputPrecision>> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  // New macro
  itkNewMacro(Self);
 
  // RTTI typeinfo
  itkTypeMacro(MetaImageFunction, itk::FunctionBase);
 
  // Input and output typedef
  typedef TCoordRep CoordRepType;
  typedef itk::Point<CoordRepType, 2> PointType;
  typedef TOutputPrecision                     ValueType;
  typedef itk::VariableLengthVector<ValueType> OutputType;
 
  // Compatible functions typedefs
  typedef Superclass                       FunctionType;
  typedef typename FunctionType::Pointer   FunctionPointerType;
  typedef std::vector<FunctionPointerType> FunctionContainerType;
 
  OutputType Evaluate(const PointType& point) const override;
 
  void AddFunction(FunctionType* function);
 
  //  template <typename T1, typename T2> void AddFunction(itk::ImageFunction<T1, T2, TCoordRep> * function);
 
  void ClearFunctions();
 
  unsigned int GetNumberOfFunctions() const;
 
  FunctionType* GetNthFunction(unsigned int index);
 
  void RemoveNthFunction(unsigned int index);
 
protected:
  MetaImageFunction();
 
  ~MetaImageFunction() override;
 
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
private:
  MetaImageFunction(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  FunctionContainerType m_FunctionContainer;
};
 
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbMetaImageFunction.hxx"
#endif
 
#endif