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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 itkDivideOrZeroOutImageFilter_h
#define itkDivideOrZeroOutImageFilter_h
#include "itkBinaryGeneratorImageFilter.h"
#include "itkNumericTraits.h"
#include "itkMath.h"
#include "itkArithmeticOpsFunctors.h"
namespace itk
{
/** \class DivideOrZeroOutImageFilter
*
* \author Gaetan Lehmann. Biologie du Developpement et de la
* Reproduction, INRA de Jouy-en-Josas, France.
*
* \ingroup IntensityImageFilters Multithreaded
* \ingroup ITKImageIntensity
*
*/
template <typename TInputImage1, typename TInputImage2 = TInputImage1, typename TOutputImage = TInputImage1>
class ITK_TEMPLATE_EXPORT DivideOrZeroOutImageFilter
: public BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DivideOrZeroOutImageFilter);
/** Standard class type aliases. */
using Self = DivideOrZeroOutImageFilter;
using Superclass = BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using FunctorType = Functor::DivideOrZeroOut<typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType>;
using NumeratorPixelType = typename TInputImage1::PixelType;
using DenominatorPixelType = typename TInputImage2::PixelType;
using OutputPixelType = typename TOutputImage::PixelType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(DivideOrZeroOutImageFilter);
/** Print internal ivars */
void
PrintSelf(std::ostream & os, Indent indent) const override
{
Superclass::PrintSelf(os, indent);
os << indent << "Threshold: " << GetThreshold() << std::endl;
}
/** Set/get the threshold below which pixels in the denominator will
* be considered zero. */
void
SetThreshold(DenominatorPixelType threshold)
{
if (Math::NotExactlyEquals(threshold, this->GetFunctor().m_Threshold))
{
this->GetFunctor().m_Threshold = threshold;
this->Modified();
}
}
DenominatorPixelType
GetThreshold() const
{
return this->GetFunctor().m_Threshold;
}
/** Set/get the constant value returned when the denominator input
* value is considered zero. */
void
SetConstant(OutputPixelType constant)
{
if (Math::NotExactlyEquals(constant, this->GetFunctor().m_Constant))
{
this->GetFunctor().m_Constant = constant;
this->Modified();
}
}
OutputPixelType
GetConstant() const
{
return this->GetFunctor().m_Constant;
}
protected:
DivideOrZeroOutImageFilter() = default;
~DivideOrZeroOutImageFilter() override = default;
void
BeforeThreadedGenerateData() override
{
this->SetFunctor(this->GetFunctor());
}
private:
itkGetConstReferenceMacro(Functor, FunctorType);
FunctorType &
GetFunctor()
{
return m_Functor;
}
FunctorType m_Functor{};
};
} // end namespace itk
#endif
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