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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 itkLevelSetEquationTermBase_hxx
#define itkLevelSetEquationTermBase_hxx
#include "itkNumericTraits.h"
#include "itkMath.h"
namespace itk
{
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::LevelSetEquationTermBase()
{
this->m_CurrentLevelSetId = LevelSetIdentifierType();
this->m_Coefficient = NumericTraits<LevelSetOutputRealType>::OneValue();
this->m_CFLContribution = LevelSetOutputRealType{};
this->m_TermName = "";
}
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
auto
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::GetRequiredData() const -> const RequiredDataType &
{
return this->m_RequiredData;
}
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
void
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::SetLevelSetContainer(LevelSetContainerType * iContainer)
{
if (iContainer)
{
this->m_LevelSetContainer = iContainer;
this->m_Heaviside = iContainer->GetHeaviside();
this->Modified();
}
else
{
itkGenericExceptionMacro("iContainer is nullptr");
}
}
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
auto
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::Evaluate(const LevelSetInputIndexType & iP)
-> LevelSetOutputRealType
{
if (itk::Math::abs(this->m_Coefficient) > NumericTraits<LevelSetOutputRealType>::epsilon())
{
return this->m_Coefficient * this->Value(iP);
}
else
{
return LevelSetOutputRealType{};
}
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
auto
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::Evaluate(const LevelSetInputIndexType & iP,
const LevelSetDataType & iData)
-> LevelSetOutputRealType
{
if (itk::Math::abs(this->m_Coefficient) > NumericTraits<LevelSetOutputRealType>::epsilon())
{
return this->m_Coefficient * this->Value(iP, iData);
}
else
{
return LevelSetOutputRealType{};
}
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
template <typename TInputImage, typename TLevelSetContainer>
void
LevelSetEquationTermBase<TInputImage, TLevelSetContainer>::SetUp()
{
this->m_CFLContribution = LevelSetOutputRealType{};
if (this->m_CurrentLevelSetPointer.IsNull())
{
if (this->m_LevelSetContainer.IsNull())
{
itkGenericExceptionMacro("m_LevelSetContainer is nullptr");
}
this->m_CurrentLevelSetPointer = this->m_LevelSetContainer->GetLevelSet(this->m_CurrentLevelSetId);
if (this->m_CurrentLevelSetPointer.IsNull())
{
itkWarningMacro("m_CurrentLevelSetId does not exist in the level set container");
}
}
if (!this->m_Heaviside.IsNotNull())
{
itkWarningMacro("m_Heaviside is nullptr");
}
}
// ----------------------------------------------------------------------------
} // namespace itk
#endif // itkLevelSetEquationTermBase_hxx
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