otbGeocentricTransform.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 otbGeocentricTransform_h
#define otbGeocentricTransform_h
 
#include "otbCoordinateTransformation.h"
#include "otbTransform.h"
 
namespace otb
{
template <TransformDirection TDirectionOfMapping, class TScalarType = double>
class ITK_EXPORT       GeocentricTransform : public Transform<TScalarType, // Data type for scalars
                                                        3,  // Number of dimensions in the input space
                                                        3> // Number of dimensions in the output space
{
public:
  typedef GeocentricTransform Self;
  typedef Transform<TScalarType, 3, 3> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  typedef typename Superclass::ScalarType ScalarType;
  typedef itk::Point<ScalarType, 3>  InputPointType;
  typedef itk::Point<ScalarType, 3> OutputPointType;
 
 
  itkNewMacro(Self);
 
  itkTypeMacro(GeocentricTransform, Transform);
 
  static const TransformDirection DirectionOfMapping = TDirectionOfMapping;
 
  itkStaticConstMacro(InputSpaceDimension, unsigned int, 3);
  itkStaticConstMacro(OutputSpaceDimension, unsigned int, 3);
  itkStaticConstMacro(SpaceDimension, unsigned int, 3);
  itkStaticConstMacro(ParametersDimension, unsigned int, 3*(3 + 1));
 
  OutputPointType TransformPoint(const InputPointType& point) const override;
 
protected:
  GeocentricTransform() : Superclass(ParametersDimension) {};
  ~GeocentricTransform() override = default;
 
private:
  GeocentricTransform(const Self&) = delete;
  void operator=(const Self&) = delete;
};
 
namespace Projection
{
template <class TScalarType = double>
struct WGS84Ellipsoid
{
 
  static constexpr TScalarType a = 6378137.;
 
  static constexpr TScalarType b = 6356752.314245;
 
  static constexpr TScalarType f = (a - b) / a;
 
  static constexpr TScalarType es = 1 - (b * b) / (a * a);
};
 
template <class TScalarType = double, class TEllipsoid = WGS84Ellipsoid<TScalarType>>
itk::Point<TScalarType, 3> WorldToEcef(const itk::Point<TScalarType, 3> & worldPoint);
 
template <class TScalarType = double, class TEllipsoid = WGS84Ellipsoid<TScalarType>>
itk::Point<TScalarType, 3> EcefToWorld(const itk::Point<TScalarType, 3> & ecefPoint);
 
} // namespace Projection
 
} // namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbGeocentricTransform.hxx"
#endif
 
#endif