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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 itkWhitakerSparseLevelSetImage_hxx
#define itkWhitakerSparseLevelSetImage_hxx
#include "itkWhitakerSparseLevelSetImage.h"
namespace itk
{
template< typename TOutput, unsigned int VDimension >
WhitakerSparseLevelSetImage< TOutput, VDimension >
::WhitakerSparseLevelSetImage()
{
this->InitializeLayers();
this->InitializeInternalLabelList();
}
template< typename TOutput, unsigned int VDimension >
WhitakerSparseLevelSetImage< TOutput, VDimension >
::~WhitakerSparseLevelSetImage()
{
}
template< typename TOutput, unsigned int VDimension >
typename WhitakerSparseLevelSetImage< TOutput, VDimension >::OutputType
WhitakerSparseLevelSetImage< TOutput, VDimension >
::Evaluate( const InputType& inputIndex ) const
{
InputType mapIndex = inputIndex - this->m_DomainOffset;
LayerMapConstIterator layerIt = this->m_Layers.begin();
OutputType rval = static_cast<OutputType>(ZeroLayer());
while( layerIt != this->m_Layers.end() )
{
LayerConstIterator it = ( layerIt->second ).find( mapIndex );
if( it != ( layerIt->second ).end() )
{
rval = it->second;
break;
}
++layerIt;
}
// if layer not found, look using label map
if(layerIt == this->m_Layers.end())
{
if( this->m_LabelMap.IsNotNull() )
{
if( this->m_LabelMap->GetLabelObject( MinusThreeLayer() )->HasIndex( mapIndex ) )
{
rval = static_cast<OutputType>( MinusThreeLayer() );
}
else
{
char status = this->m_LabelMap->GetPixel( mapIndex );
if( status == this->PlusThreeLayer() )
{
rval = static_cast<OutputType>( this->PlusThreeLayer() );
}
else
{
itkGenericExceptionMacro( <<"status "
<< static_cast< int >( status )
<< " should be 3 or -3" );
}
}
}
else
{
itkGenericExceptionMacro( <<"Note: m_LabelMap is ITK_NULLPTR" );
}
}
return rval;
}
template< typename TOutput, unsigned int VDimension >
void
WhitakerSparseLevelSetImage< TOutput, VDimension >
::InitializeLayers()
{
this->m_Layers.clear();
this->m_Layers[ MinusTwoLayer() ] = LayerType();
this->m_Layers[ MinusOneLayer() ] = LayerType();
this->m_Layers[ ZeroLayer() ] = LayerType();
this->m_Layers[ PlusOneLayer() ] = LayerType();
this->m_Layers[ PlusTwoLayer() ] = LayerType();
}
template< typename TOutput, unsigned int VDimension >
void
WhitakerSparseLevelSetImage< TOutput, VDimension >
::InitializeInternalLabelList()
{
this->m_InternalLabelList.clear();
this->m_InternalLabelList.push_back( MinusThreeLayer() );
this->m_InternalLabelList.push_back( MinusTwoLayer() );
this->m_InternalLabelList.push_back( MinusOneLayer() );
this->m_InternalLabelList.push_back( ZeroLayer() );
}
}
#endif // itkWhitakerSparseLevelSetImage_hxx
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