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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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 itkLevelSetEquationOverlapPenaltyTerm_hxx
#define itkLevelSetEquationOverlapPenaltyTerm_hxx
namespace itk
{
template <typename TInput, typename TLevelSetContainer>
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::LevelSetEquationOverlapPenaltyTerm()
{
this->m_TermName = "Overlap term";
this->m_RequiredData.insert("");
this->m_DomainMapImageFilter = nullptr;
this->m_CacheImage = nullptr;
}
template <typename TInput, typename TLevelSetContainer>
void
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::Update()
{}
template <typename TInput, typename TLevelSetContainer>
void
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::UpdatePixel(
const LevelSetInputIndexType & itkNotUsed(index),
const LevelSetOutputRealType & itkNotUsed(oldValue),
const LevelSetOutputRealType & itkNotUsed(newValue))
{}
template <typename TInput, typename TLevelSetContainer>
void
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::InitializeParameters()
{
this->SetUp();
}
template <typename TInput, typename TLevelSetContainer>
void
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::Initialize(
const LevelSetInputIndexType & itkNotUsed(index))
{}
template <typename TInput, typename TLevelSetContainer>
auto
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::Value(const LevelSetInputIndexType & index)
-> LevelSetOutputRealType
{
LevelSetOutputRealType value{};
this->ComputeSumTerm(index, value);
return -value;
}
template <typename TInput, typename TLevelSetContainer>
auto
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::Value(const LevelSetInputIndexType & index,
const LevelSetDataType & itkNotUsed(data))
-> LevelSetOutputRealType
{
LevelSetOutputRealType value{};
this->ComputeSumTerm(index, value);
return -value;
}
template <typename TInput, typename TLevelSetContainer>
void
LevelSetEquationOverlapPenaltyTerm<TInput, TLevelSetContainer>::ComputeSumTerm(const LevelSetInputIndexType & index,
LevelSetOutputRealType & sum)
{
CompensatedSummationType compensatedSummation;
compensatedSummation.ResetToZero();
if (this->m_LevelSetContainer->HasDomainMap())
{
if (this->m_DomainMapImageFilter == nullptr)
{
this->m_DomainMapImageFilter = this->m_LevelSetContainer->GetModifiableDomainMapFilter();
this->m_CacheImage = this->m_DomainMapImageFilter->GetOutput();
}
const LevelSetIdentifierType idx = this->m_CacheImage->GetPixel(index);
using DomainMapType = typename DomainMapImageFilterType::DomainMapType;
const DomainMapType domainMap = this->m_DomainMapImageFilter->GetDomainMap();
auto levelSetMapItr = domainMap.find(idx);
if (levelSetMapItr != domainMap.end())
{
const IdListType * idList = levelSetMapItr->second.GetIdList();
LevelSetIdentifierType kk;
LevelSetPointer levelSet;
LevelSetOutputRealType value;
auto idListIt = idList->begin();
while (idListIt != idList->end())
{
//! \todo Fix me for string identifiers
kk = *idListIt - 1;
if (kk != this->m_CurrentLevelSetId)
{
levelSet = this->m_LevelSetContainer->GetLevelSet(kk);
value = levelSet->Evaluate(index);
compensatedSummation += -this->m_Heaviside->Evaluate(-value);
}
++idListIt;
}
}
}
else
{
LevelSetIdentifierType kk;
LevelSetPointer levelSet;
LevelSetOutputRealType value;
typename LevelSetContainerType::Iterator lsIt = this->m_LevelSetContainer->Begin();
while (lsIt != this->m_LevelSetContainer->End())
{
kk = lsIt->GetIdentifier();
if (kk != this->m_CurrentLevelSetId)
{
levelSet = this->m_LevelSetContainer->GetLevelSet(kk);
value = levelSet->Evaluate(index);
compensatedSummation += -this->m_Heaviside->Evaluate(-value);
}
++lsIt;
}
}
sum += compensatedSummation.GetSum();
}
} // namespace itk
#endif
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