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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 otbMetaImageFunction_hxx
#define otbMetaImageFunction_hxx
#include "otbMetaImageFunction.h"
#include "otbImageFunctionAdaptor.h"
#include <algorithm>
namespace otb
{
template <class TOutputPrecision, class TCoordRep>
MetaImageFunction<TOutputPrecision, TCoordRep>::MetaImageFunction() : m_FunctionContainer()
{
}
template <class TOutputPrecision, class TCoordRep>
MetaImageFunction<TOutputPrecision, TCoordRep>::~MetaImageFunction()
{
this->ClearFunctions();
}
template <class TOutputPrecision, class TCoordRep>
void MetaImageFunction<TOutputPrecision, TCoordRep>::AddFunction(FunctionType* function)
{
m_FunctionContainer.push_back(function);
}
template <class TOutputPrecision, class TCoordRep>
void MetaImageFunction<TOutputPrecision, TCoordRep>::ClearFunctions()
{
m_FunctionContainer.clear();
}
template <class TOutputPrecision, class TCoordRep>
unsigned int MetaImageFunction<TOutputPrecision, TCoordRep>::GetNumberOfFunctions() const
{
return m_FunctionContainer.size();
}
template <class TOutputPrecision, class TCoordRep>
typename MetaImageFunction<TOutputPrecision, TCoordRep>::FunctionType* MetaImageFunction<TOutputPrecision, TCoordRep>::GetNthFunction(unsigned int index)
{
return m_FunctionContainer.at(index);
}
template <class TOutputPrecision, class TCoordRep>
void MetaImageFunction<TOutputPrecision, TCoordRep>::RemoveNthFunction(unsigned int index)
{
typename FunctionContainerType::iterator fIt = m_FunctionContainer.begin() + index;
m_FunctionContainer.erase(fIt);
}
template <class TOutputPrecision, class TCoordRep>
typename MetaImageFunction<TOutputPrecision, TCoordRep>::OutputType MetaImageFunction<TOutputPrecision, TCoordRep>::Evaluate(const PointType& point) const
{
// Build output
OutputType resp;
// For each function
typename FunctionContainerType::const_iterator fIt = m_FunctionContainer.begin();
while (fIt != m_FunctionContainer.end())
{
// Store current size
unsigned int currentSize = static_cast<unsigned int>(resp.GetSize());
// Call current function evaluation
OutputType currentVector = (*fIt)->Evaluate(point);
// Compute current vector size
unsigned int currentVectorSize = static_cast<unsigned int>(currentVector.GetSize());
// Enlarge the output vector
resp.SetSize(currentSize + currentVectorSize, false);
// Fill the output
for (unsigned int i = 0; i < currentVectorSize; ++i)
{
resp.SetElement(currentSize + i, static_cast<ValueType>(currentVector[i]));
}
// Go to next function
++fIt;
}
return resp;
}
template <class TOutputPrecision, class TCoordRep>
void MetaImageFunction<TOutputPrecision, TCoordRep>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Number of image functions: " << this->GetNumberOfFunctions() << std::endl;
}
} // end namespace otb
#endif
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