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itkCommandVnlIterationUpdate.h
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itkCommandVnlIterationUpdate.h
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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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 itkCommandVnlIterationUpdate_h
#define itkCommandVnlIterationUpdate_h
#include "itkCommand.h"
#include "itkWeakPointer.h"
namespace itk {
/**
* Implementation of the Command Pattern to be invoked every iteration
* \class CommandVnlIterationUpdate
* \ingroup ITKRegistrationCommon
*/
template < typename TOptimizer >
class CommandVnlIterationUpdate : public Command
{
public:
/**
* Standard "Self" typedef.
*/
using Self = CommandVnlIterationUpdate;
/**
* Standard "Superclass" typedef.
*/
using Superclass = itk::Command;
/**
* Smart pointer type alias support
*/
using Pointer = itk::SmartPointer<Self>;
/**
* ConstSmart pointer type alias support
*/
using ConstPointer = itk::SmartPointer<const Self>;
/**
* Execute method will print data at each iteration
*/
void Execute(itk::Object *caller, const itk::EventObject & event) override
{
Execute( (const itk::Object *)caller, event);
}
void Execute(const itk::Object * itkNotUsed(caller), const itk::EventObject & event) override
{
if( typeid( event ) == typeid( itk::StartEvent ) )
{
std::cout << std::endl << "Position Value";
std::cout << std::endl << std::endl;
}
else if( itk::IterationEvent().CheckEvent( &event ) )
{
std::cout << m_Optimizer->GetCurrentIteration() << " = ";
std::cout << m_Optimizer->GetCurrentPosition() << std::endl;
}
else if( typeid( event ) == typeid( itk::EndEvent ) )
{
std::cout << std::endl << std::endl;
std::cout << "After " << m_Optimizer->GetCurrentIteration();
std::cout << " iterations " << std::endl;
std::cout << "Solution is = " << m_Optimizer->GetCurrentPosition();
std::cout << std::endl;
std::cout << "vnl report = " << std::endl;
m_Optimizer->GetOptimizer()->diagnose_outcome( std::cout );
}
}
/**
* Run-time type information (and related methods).
*/
itkTypeMacro( CommandVnlIterationUpdate, ::itk::Command );
/**
* Method for creation through the object factory.
*/
itkNewMacro( Self );
/**
* Type defining the optimizer
*/
using OptimizerType = TOptimizer;
/**
* Set Optimizer
*/
void SetOptimizer( OptimizerType * optimizer )
{
m_Optimizer = optimizer;
m_Optimizer->AddObserver( itk::IterationEvent(), this );
}
protected:
/**
* Constructor
*/
CommandVnlIterationUpdate() = default;
private:
/**
* WeakPointer to the Optimizer
*/
WeakPointer<OptimizerType> m_Optimizer;
};
} // end namespace itk
#endif