/usr/include/OTB-6.4/otbAffineFunctor.h is in libotb-dev 6.4.0+dfsg-1.
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* Copyright (C) 2005-2017 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 otbAffineFunctor_h
#define otbAffineFunctor_h
namespace otb
{
namespace Functor
{
/** \class AffineFunctor
* \brief This functor performs a linear transform of its input.
*
* \f[ output = a*input + b \f]
*
* Coefficient a is a scalar, its type is templated (default is double).
* Coefficient b has the same type as output type. Standard casting is applied
* between input and output type.
*
* TInput and TOutput type are supposed to be scalar types.
*
* \ingroup OTBImageManipulation
*/
template<class TInput, class TOutput, class TScale=double>
class AffineFunctor
{
public:
/// Constructor
AffineFunctor()
:m_A(0.), m_B(0.) {}
/// Constructor
virtual ~AffineFunctor() {}
/// Accessors
void SetA(TScale value)
{
m_A = value;
}
TScale GetA()
{
return m_A;
}
void SetB(TOutput value)
{
m_B = value;
}
TOutput GetB()
{
return m_B;
}
bool operator !=(const AffineFunctor& other) const
{
return ((m_A != other.GetA()) || (m_B != other.GetB()));
}
bool operator==(const AffineFunctor& other) const
{
return ((m_A == other.GetA()) && (m_B == other.GetB()));
}
// main computation method
inline TOutput operator()(const TInput & x) const
{
return (m_B + static_cast<TOutput>(m_A*x));
}
private:
TScale m_A;
TOutput m_B;
};
} // End namespace Functor
} // End namespace otb
#endif
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