itkExponentialLimiterFunction.h

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/*=========================================================================
 *
 *  Copyright UMC Utrecht and contributors
 *
 *  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.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 itkExponentialLimiterFunction_h
#define itkExponentialLimiterFunction_h
 
#include "itkLimiterFunctionBase.h"
 
namespace itk
{

template <typename TInput, unsigned int NDimension>
class ITK_TEMPLATE_EXPORT ExponentialLimiterFunction : public LimiterFunctionBase<TInput, NDimension>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ExponentialLimiterFunction);

  using Self = ExponentialLimiterFunction;
  using Superclass = LimiterFunctionBase<TInput, NDimension>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkOverrideGetNameOfClassMacro(ExponentialLimiterFunction);

  itkNewMacro(Self);

  itkStaticConstMacro(Dimension, unsigned int, Superclass::Dimension);

  using typename Superclass::InputType;
  using typename Superclass::OutputType;
  using typename Superclass::DerivativeValueType;
  using typename Superclass::DerivativeType;

  OutputType
  Evaluate(const InputType & input) const override;

  OutputType
  Evaluate(const InputType & input, DerivativeType & derivative) const override;

  void
  Initialize() override;
 
protected:
  ExponentialLimiterFunction();
  ~ExponentialLimiterFunction() override = default;
 
  virtual void
  ComputeLimiterSettings();
 
  double m_UTminUB{};
  double m_UTminUBinv{};
  double m_LTminLB{};
  double m_LTminLBinv{};
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkExponentialLimiterFunction.hxx"
#endif
 
#endif