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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 itkFastMarchingNumberOfElementsStoppingCriterion_h
#define itkFastMarchingNumberOfElementsStoppingCriterion_h
#include "itkFastMarchingStoppingCriterionBase.h"
#include "itkObjectFactory.h"
namespace itk
{
/**
* \class FastMarchingNumberOfElementsStoppingCriterion
* \brief Stopping Criterion is verified when Current Number of Elements is equal
* to or greater than the provided Target Number Of Elements.
*
* \note For itk::Image, one element is one pixel. So the number of elements is directly
* linked to the physical size of the object, i.e.
* \f$ PhysicalSize = TargetNumberOfElements \cdot \prod_{i=1}{dim} Spacing_{i} \f$
*
* \note For itk::QuadEdgeMesh, one element is one vertex.
*
* \ingroup ITKFastMarching
*/
template< typename TInput, typename TOutput >
class FastMarchingNumberOfElementsStoppingCriterion :
public FastMarchingStoppingCriterionBase< TInput, TOutput >
{
public:
typedef FastMarchingNumberOfElementsStoppingCriterion Self;
typedef FastMarchingStoppingCriterionBase< TInput, TOutput > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(FastMarchingNumberOfElementsStoppingCriterion,
FastMarchingStoppingCriterionBase );
typedef typename Superclass::OutputPixelType OutputPixelType;
typedef typename Superclass::NodeType NodeType;
/** Get/set the threshold used by the stopping criteria. */
itkSetMacro( TargetNumberOfElements, IdentifierType );
itkGetMacro( TargetNumberOfElements, IdentifierType );
bool IsSatisfied() const ITK_OVERRIDE
{
return ( this->m_CurrentNumberOfElements >= this->m_TargetNumberOfElements );
}
std::string GetDescription() const ITK_OVERRIDE
{
return "Current Number of Elements >= Target Number of Elements";
}
protected:
FastMarchingNumberOfElementsStoppingCriterion() : Superclass(),
m_CurrentNumberOfElements( NumericTraits< IdentifierType >::ZeroValue() ),
m_TargetNumberOfElements( NumericTraits< IdentifierType >::ZeroValue() )
{}
~FastMarchingNumberOfElementsStoppingCriterion() ITK_OVERRIDE {}
IdentifierType m_CurrentNumberOfElements;
IdentifierType m_TargetNumberOfElements;
void SetCurrentNode( const NodeType& ) ITK_OVERRIDE
{
++this->m_CurrentNumberOfElements;
}
void Reset() ITK_OVERRIDE
{
this->m_CurrentNumberOfElements = NumericTraits< IdentifierType >::ZeroValue();
}
private:
ITK_DISALLOW_COPY_AND_ASSIGN(FastMarchingNumberOfElementsStoppingCriterion);
};
}
#endif // itkFastMarchingNumberOfElementsStoppingCriterion_h
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