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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
{
/** \class GeocentricTransform
*
* \brief Convert coordinates from geocentric (X, Y, Z) to geographic (lon, lat, h)
*
*
* \ingroup OTBTransform
*/
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:
/** Standard class typedefs. */
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;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
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
{
/** \struct WGS84Ellipsoid
*
* \brief a structure holding the ellipsoid parameters for WGS84
*
* \ingroup OTBTransform
*
*/
template <class TScalarType = double>
struct WGS84Ellipsoid
{
/** Semi-major axis a */
static constexpr TScalarType a = 6378137.;
/** Semi-major axis b */
static constexpr TScalarType b = 6356752.314245;
/** flattening */
static constexpr TScalarType f = (a - b) / a;
/** first eccentricity squared */
static constexpr TScalarType es = 1 - (b * b) / (a * a);
};
/** \fn WorldToEcef
*
* \brief convert from geographic (lon, lat, height) to ECEF coordinates (x, y, z)
*
* \param[in] ecefPoint : the input geographic point
*
* \ingroup OTBTransform
*
*/
template <class TScalarType = double, class TEllipsoid = WGS84Ellipsoid<TScalarType>>
itk::Point<TScalarType, 3> WorldToEcef(const itk::Point<TScalarType, 3> & worldPoint);
/** \fn EcefToWorld
*
* \brief convert from ECEF (x, y, z) to geographic coordinates (lon, lat, height)
*
* \param[in] ecefPoint : the input ECEF point
*
* \ingroup OTBTransform
*/
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
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