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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 itkTwoOutputExampleImageFilter_hxx
#define itkTwoOutputExampleImageFilter_hxx
#if !defined( ITK_LEGACY_REMOVE )
#include "itkTwoOutputExampleImageFilter.h"
#include "itkImageRegionIterator.h"
#include "itkNumericTraits.h"
#include "itkObjectFactory.h"
#include "itkProgressReporter.h"
namespace itk
{
/**
*
*/
template< typename TImage >
TwoOutputExampleImageFilter< TImage >
::TwoOutputExampleImageFilter()
{
m_OutsideValue = NumericTraits< PixelType >::ZeroValue();
m_Lower = NumericTraits< PixelType >::NonpositiveMin();
m_Upper = NumericTraits< PixelType >::max();
typename TImage::Pointer output = TImage::New();
this->ProcessObject::SetNumberOfRequiredOutputs(2);
this->ProcessObject::SetNthOutput( 1, output.GetPointer() );
}
/**
*
*/
template< typename TImage >
void
TwoOutputExampleImageFilter< TImage >
::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "OutsideValue: "
<< static_cast< typename NumericTraits< PixelType >::PrintType >( m_OutsideValue )
<< std::endl;
os << indent << "Lower: "
<< static_cast< typename NumericTraits< PixelType >::PrintType >( m_Lower )
<< std::endl;
os << indent << "Upper: "
<< static_cast< typename NumericTraits< PixelType >::PrintType >( m_Upper )
<< std::endl;
}
/**
* The values greater than or equal to the value are set to OutsideValue
*/
template< typename TImage >
void
TwoOutputExampleImageFilter< TImage >
::ThresholdAbove(PixelType & thresh)
{
if ( m_Upper != thresh
|| m_Lower > NumericTraits< PixelType >::NonpositiveMin() )
{
m_Lower = NumericTraits< PixelType >::NonpositiveMin();
m_Upper = thresh;
this->Modified();
}
}
/**
* The values less than or equal to the value are set to OutsideValue
*/
template< typename TImage >
void
TwoOutputExampleImageFilter< TImage >
::ThresholdBelow(PixelType & thresh)
{
if ( m_Lower != thresh || m_Upper < NumericTraits< PixelType >::max() )
{
m_Lower = thresh;
m_Upper = NumericTraits< PixelType >::max();
this->Modified();
}
}
/**
* The values outside the range are set to OutsideValue
*/
template< typename TImage >
void
TwoOutputExampleImageFilter< TImage >
::ThresholdOutside(PixelType & lower, PixelType & upper)
{
if ( lower > upper )
{
itkExceptionMacro(<< "Lower threshold cannot be greater than upper threshold.");
return;
}
if ( m_Lower != lower || m_Upper != upper )
{
m_Lower = lower;
m_Upper = upper;
this->Modified();
}
}
/**
*
*/
template< typename TImage >
void
TwoOutputExampleImageFilter< TImage >
::ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId)
{
itkDebugMacro(<< "Actually executing");
// Get the input and output pointers
InputImageConstPointer inputPtr = this->GetInput();
OutputImagePointer outputPtr = this->GetOutput(0);
OutputImagePointer outputInversePtr = this->GetOutput(1);
// Define/declare an iterator that will walk the output region for this
// thread.
typedef ImageRegionConstIterator< TImage > InputIterator;
typedef ImageRegionIterator< TImage > OutputIterator;
InputIterator inIt(inputPtr, outputRegionForThread);
OutputIterator outIt(outputPtr, outputRegionForThread);
OutputIterator outInverseIt(outputInversePtr, outputRegionForThread);
// support progress methods/callbacks
ProgressReporter progress( this, threadId, outputRegionForThread.GetNumberOfPixels() );
// walk the regions, threshold each pixel
while ( !outIt.IsAtEnd() )
{
const PixelType value = inIt.Get();
if ( m_Lower <= value && value <= m_Upper )
{
// pixel passes to output unchanged and is replaced by m_OutsideValue in
// the inverse output image
outIt.Set( inIt.Get() );
outInverseIt.Set(m_OutsideValue);
}
else
{
outIt.Set(m_OutsideValue);
outInverseIt.Set( inIt.Get() );
}
++inIt;
++outIt;
++outInverseIt;
progress.CompletedPixel();
}
}
} // end namespace itk
#endif //#if !defined( ITK_LEGACY_REMOVE )
#endif
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