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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 itkRegionBasedLevelSetFunctionData_hxx
#define itkRegionBasedLevelSetFunctionData_hxx
#include "itkRegionBasedLevelSetFunctionData.h"
namespace itk
{
template< typename TInputImage, typename TFeatureImage >
RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >
::RegionBasedLevelSetFunctionData()
{
m_WeightedNumberOfPixelsInsideLevelSet = 0.;
m_WeightedNumberOfPixelsOutsideLevelSet = 0.;
m_HeavisideFunctionOfLevelSetImage = ITK_NULLPTR;
}
template< typename TInputImage, typename TFeatureImage >
void
RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >
::CreateHeavisideFunctionOfLevelSetImage(const InputImageType *image)
{
const InputRegionType region = image->GetLargestPossibleRegion();
this->m_HeavisideFunctionOfLevelSetImage = InputImageType::New();
this->m_HeavisideFunctionOfLevelSetImage->CopyInformation(image);
this->m_HeavisideFunctionOfLevelSetImage->SetRegions(region);
this->m_HeavisideFunctionOfLevelSetImage->Allocate(true); // initialize
// buffer
// to zero
const InputPointType origin = image->GetOrigin();
this->m_HeavisideFunctionOfLevelSetImage->TransformPhysicalPointToIndex(origin, this->m_Start);
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
this->m_End[i] = this->m_Start[i] + static_cast< InputIndexValueType >( region.GetSize()[i] ) - 1;
}
}
template< typename TInputImage, typename TFeatureImage >
typename RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >::InputIndexType
RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >
::GetIndex(const FeatureIndexType & featureIndex)
{
InputIndexType index;
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
index[i] = featureIndex[i] - static_cast< InputIndexValueType >( this->m_Start[i] );
}
return index;
}
template< typename TInputImage, typename TFeatureImage >
typename RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >::FeatureIndexType
RegionBasedLevelSetFunctionData< TInputImage, TFeatureImage >
::GetFeatureIndex(const InputIndexType & inputIndex)
{
FeatureIndexType index;
for ( unsigned int i = 0; i < ImageDimension; i++ )
{
index[i] = inputIndex[i] + static_cast< InputIndexValueType >( this->m_Start[i] );
}
return index;
}
} //end namespace itk
#endif
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