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/*
* Copyright (C) 2005-2020 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 otbTimeSeries_h
#define otbTimeSeries_h
#include "itkFixedArray.h"
#include <cmath>
namespace otb
{
template <unsigned int TDegree = 2, class TCoefPrecision = double>
class PolynomialTimeSeries
{
public:
typedef TCoefPrecision CoefficientsPrecisionType;
typedef itk::FixedArray<CoefficientsPrecisionType, TDegree + 1> CoefficientsType;
/// Constructor
PolynomialTimeSeries()
{
}
/// Destructor
virtual ~PolynomialTimeSeries()
{
}
inline void SetCoefficients(CoefficientsType& coeffs)
{
for (unsigned int i = 0; i <= TDegree; ++i)
m_Coefficients[i] = coeffs[i];
}
inline TCoefPrecision GetCoefficient(unsigned int co) const
{
return m_Coefficients[co];
}
inline CoefficientsType GetCoefficients() const
{
return m_Coefficients;
}
inline CoefficientsPrecisionType GetValue(CoefficientsPrecisionType val) const
{
CoefficientsPrecisionType tmpVal = 0;
for (unsigned int i = 0; i <= TDegree; ++i)
tmpVal += m_Coefficients[i] * std::pow(val, static_cast<CoefficientsPrecisionType>(i));
return tmpVal;
}
private:
CoefficientsType m_Coefficients;
};
}
#endif
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