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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/** Generic interface for protocol communication between an ITK filter
and the VolView Plugin Interface */
#ifndef _vvITKFilterModuleDoubleOutput_h
#define _vvITKFilterModuleDoubleOutput_h
#include "vvITKFilterModule.h"
namespace VolView
{
namespace PlugIn
{
template <class TFilterType >
class FilterModuleDoubleOutput : public FilterModule<TFilterType> {
public:
typedef FilterModule<TFilterType> Superclass;
// Instantiate the image types
typedef typename Superclass::FilterType FilterType;
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::OutputImageType OutputImageType;
typedef typename Superclass::InputPixelType InputPixelType;
typedef typename Superclass::OutputPixelType OutputPixelType;
itkStaticConstMacro( Dimension, unsigned int,
itk::GetImageDimension< InputImageType >::ImageDimension );
typedef typename Superclass::ImportFilterType ImportFilterType;
typedef typename Superclass::SizeType SizeType;
typedef typename Superclass::IndexType IndexType;
typedef typename Superclass::RegionType RegionType;
public:
/** Constructor */
FilterModuleDoubleOutput()
{
m_ProduceDoubleOutput = false;
}
/** Destructor */
virtual ~FilterModuleDoubleOutput()
{
}
/** Enable/Disable the production of the second output */
void SetProduceDoubleOutput( bool value )
{
m_ProduceDoubleOutput = value;
}
/** Copy the result of the processing to the output */
virtual void CopyOutputData( const vtkVVProcessDataStruct * pds )
{
// Copy the data (with casting) to the output buffer provided by the PlugIn API
typename OutputImageType::ConstPointer outputImage =
this->GetFilter()->GetOutput();
typedef itk::ImageRegionConstIterator< OutputImageType > OutputIteratorType;
OutputIteratorType ot( outputImage, outputImage->GetBufferedRegion() );
ot.GoToBegin();
if( m_ProduceDoubleOutput )
{
typename InputImageType::ConstPointer inputImage =
this->GetFilter()->GetInput();
typedef itk::ImageRegionConstIterator< InputImageType > InputIteratorType;
InputIteratorType it( inputImage, inputImage->GetBufferedRegion() );
it.GoToBegin();
// When producing composite output, the output image must have the same
// type as the input image. Therefore, we use InputPixelType instead of
// OutputPixelType.
InputPixelType * outData = (InputPixelType *)(pds->outData);
while( !ot.IsAtEnd() )
{
*outData = static_cast< InputPixelType >( it.Get() ); // copy input pixel
++outData;
*outData = static_cast< InputPixelType >(ot.Get()); // copy output pixel
++outData;
++ot;
++it;
}
}
else
{
OutputPixelType * outData = (OutputPixelType *)(pds->outData);
while( !ot.IsAtEnd() )
{
*outData = ot.Get(); // copy output pixel
++outData;
++ot;
}
}
}
/** ProcessData performs the actual filtering on the data */
virtual void
ProcessData( const vtkVVProcessDataStruct * pds )
{
this->InitializeProgressValue();
this->SetCurrentFilterProgressWeight( 1.0 );
const unsigned int numberOfComponents = this->GetPluginInfo()->InputVolumeNumberOfComponents;
if( numberOfComponents != 1 )
{
itk::ExceptionObject excp;
excp.SetDescription("This filter is intendended to be used with single-componente data only");
throw excp;
}
this->ImportPixelBuffer( 0, pds );
if( !m_ProduceDoubleOutput )
{
this->ExportPixelBuffer( 0, pds );
}
// Execute the filter
try
{
this->GetFilter()->Update();
}
catch( itk::ProcessAborted & )
{
return;
}
this->CopyOutputData( pds );
}
private:
bool m_ProduceDoubleOutput;
};
} // end namespace PlugIn
} // end namespace VolView
#endif
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