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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 itkFiniteDifferenceFunction_hxx
#define itkFiniteDifferenceFunction_hxx
#include "itkFiniteDifferenceFunction.h"
namespace itk
{
template< typename TImageType >
FiniteDifferenceFunction< TImageType >::
FiniteDifferenceFunction()
{
// initialize variables
m_Radius.Fill(0);
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
m_ScaleCoefficients[i] = 1.0;
}
}
template< typename TImageType >
void
FiniteDifferenceFunction< TImageType >::SetRadius(const RadiusType & r)
{
m_Radius = r;
}
template< typename TImageType >
const typename FiniteDifferenceFunction< TImageType >::RadiusType &
FiniteDifferenceFunction< TImageType >::GetRadius() const
{
return m_Radius;
}
template< typename TImageType >
void
FiniteDifferenceFunction< TImageType >::
SetScaleCoefficients(PixelRealType vals[ImageDimension])
{
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
m_ScaleCoefficients[i] = vals[i];
}
}
template< typename TImageType >
void
FiniteDifferenceFunction< TImageType >::
GetScaleCoefficients(PixelRealType vals[ImageDimension]) const
{
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
vals[i] = m_ScaleCoefficients[i];
}
}
template< typename TImageType >
void
FiniteDifferenceFunction< TImageType >::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Radius: " << m_Radius << std::endl;
os << indent << "ScaleCoefficients: " << m_ScaleCoefficients;
}
template< typename TImageType >
const typename FiniteDifferenceFunction< TImageType >::NeighborhoodScalesType
FiniteDifferenceFunction< TImageType >::ComputeNeighborhoodScales() const
{
NeighborhoodScalesType neighborhoodScales;
neighborhoodScales.Fill(0.0);
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
if ( this->m_Radius[i] > 0 )
{
neighborhoodScales[i] = this->m_ScaleCoefficients[i] / this->m_Radius[i];
}
}
return neighborhoodScales;
}
} // end namespace itk
#endif
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