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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkDefaultVectorPixelAccessorFunctor.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:34 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#ifndef __itkDefaultVectorPixelAccessorFunctor_h |
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#define __itkDefaultVectorPixelAccessorFunctor_h |
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namespace itk |
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{ |
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/** \class DefaultVectorPixelAccessorFunctor |
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* \brief This class provides a common API for pixel accessors for Image and |
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* VectorImage. (between the DefaultVectorPixelAccessor and DefaultPixelAccessor). |
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* |
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* The pixel accessor is set with the SetPixelAccessor method. This accessor is |
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* meant to be used only for VectorImage and not for Image. Prior to use, the |
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* start of the VectorImage buffer must also be set with the SetBegin method. |
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* |
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* \sa DefaultVectorPixelAccessor |
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* \sa DefaultPixelAccessor |
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* \sa DefaultPixelAccessorFunctor |
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* |
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* \thanks |
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* This work is part of the National Alliance for Medical Image Computing |
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* (NAMIC), funded by the National Institutes of Health through the NIH Roadmap |
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* for Medical Research, Grant U54 EB005149. |
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* |
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* \ingroup ImageAdaptors |
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*/ |
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template <class TImageType > |
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class ITK_EXPORT DefaultVectorPixelAccessorFunctor |
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{ |
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public: |
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typedef TImageType ImageType; |
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typedef typename ImageType::InternalPixelType InternalPixelType; |
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typedef typename ImageType::PixelType ExternalPixelType; |
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typedef typename ImageType::AccessorType PixelAccessorType; |
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typedef unsigned int VectorLengthType; |
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static void SetVectorLength( ImageType *image, VectorLengthType length ) |
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{ |
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image->SetVectorLength( length ); |
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} |
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static VectorLengthType GetVectorLength( const ImageType * image ) |
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{ |
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return image->GetVectorLength(); |
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} |
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/** Set the PixelAccessor. This is set at construction time by the image iterators. |
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* The type PixelAccessorType is obtained from the ImageType over which the iterators |
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* are templated. |
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* */ |
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inline void SetPixelAccessor( PixelAccessorType& accessor ) |
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{ |
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m_PixelAccessor = accessor; |
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} |
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/** Set the pointer index to the start of the buffer. */ |
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inline void SetBegin( const InternalPixelType * begin ) |
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{ this->m_Begin = const_cast< InternalPixelType * >( begin ); } |
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/** Set output using the value in input */ |
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inline void Set( InternalPixelType & output, const ExternalPixelType &input ) const |
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{ |
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m_PixelAccessor.Set( output, input, (&output)-m_Begin ); |
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} |
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/** Get the value from input */ |
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inline ExternalPixelType Get( const InternalPixelType &input ) const |
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{ |
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return m_PixelAccessor.Get( input, &input - m_Begin ); |
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} |
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private: |
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PixelAccessorType m_PixelAccessor; // The pixel accessor |
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InternalPixelType *m_Begin; // Begin of the buffer |
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}; |
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} |
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#endif |
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