otbGroundSpacingImageFunction.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 otbGroundSpacingImageFunction_h
#define otbGroundSpacingImageFunction_h
 
#include "itkImageFunction.h"
#include "itkNumericTraits.h"
 
#include "otbGenericRSTransform.h"
 
namespace otb
{
 
template <class TInputImage, class TCoordRep = float>
class ITK_EXPORT GroundSpacingImageFunction : public itk::ImageFunction<TInputImage, itk::Vector<float, 2>, TCoordRep>
{
public:
 
  typedef GroundSpacingImageFunction Self;
 
  typedef float ValueType;
  // typedef std::pair<ValueType, ValueType> FloatType;
  typedef itk::Vector<ValueType, 2> FloatType;
 
  typedef itk::ImageFunction<TInputImage, FloatType, TCoordRep> Superclass;
 
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  itkTypeMacro(GroundSpacingImageFunction, itk::ImageFunction);
 
  itkNewMacro(Self);
 
  typedef TInputImage                              InputImageType;
  typedef typename Superclass::OutputType          OutputType;
  typedef typename Superclass::IndexType           IndexType;
  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
  typedef typename Superclass::PointType           PointType;
 
  typedef otb::GenericRSTransform<double> TransformType;
 
  typedef typename IndexType::IndexValueType IndexValueType;
 
  itkStaticConstMacro(ImageDimension, unsigned int, InputImageType::ImageDimension);
 
  FloatType EvaluateAtIndex(const IndexType& index) const override;
 
  FloatType Evaluate(const PointType& point) const override
  {
    IndexType index;
    this->ConvertPointToNearestIndex(point, index);
    return this->EvaluateAtIndex(index);
  }
 
  FloatType EvaluateAtContinuousIndex(const ContinuousIndexType& cindex) const override
  {
    IndexType index;
    this->ConvertContinuousIndexToNearestIndex(cindex, index);
    return this->EvaluateAtIndex(index);
  }
 
  PointType GetPixelLocation(const IndexType& index) const;
 
protected:
  GroundSpacingImageFunction();
  ~GroundSpacingImageFunction() override
  {
  }
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
private:
  GroundSpacingImageFunction(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  ValueType m_R;
  ValueType m_Deg2radCoef;
};
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbGroundSpacingImageFunction.hxx"
#endif
 
#endif