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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkPathIterator.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:43 $ |
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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 __itkPathIterator_h |
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#define __itkPathIterator_h |
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#include "itkIndex.h" |
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#include "itkImage.h" |
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#include "itkPath.h" |
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#include "itkPathConstIterator.h" |
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namespace itk |
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{ |
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/** |
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* \class PathIterator |
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* \brief PathIterator iterates (traces) over a path through an image. |
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* |
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* This iterator visits only those indices of the image which are overlapped by |
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* the path. All indicies are visited in path order. If a path crosses itself |
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* at an index, that index of the image will be visited twice. This class add |
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* write-access to the functionality of the PathConstIterator. |
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* |
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* \par MORE INFORMATION |
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* For a complete description of the ITK Image Iterators and their API, please |
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* see the Iterators chapter in the ITK Software Guide. The ITK Software Guide |
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* is available in print and as a free .pdf download from http://www.itk.org. |
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* |
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* \ingroup ImageIterators |
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* |
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* \sa ImageConstIterator \sa ConditionalConstIterator |
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* \sa ConstNeighborhoodIterator \sa ConstShapedNeighborhoodIterator |
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* \sa ConstSliceIterator \sa CorrespondenceDataStructureIterator |
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* \sa FloodFilledFunctionConditionalConstIterator |
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* \sa FloodFilledImageFunctionConditionalConstIterator |
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* \sa FloodFilledImageFunctionConditionalIterator |
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* \sa FloodFilledSpatialFunctionConditionalConstIterator |
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* \sa FloodFilledSpatialFunctionConditionalIterator |
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* \sa ImageConstIterator \sa ImageConstIteratorWithIndex |
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* \sa ImageIterator \sa ImageIteratorWithIndex |
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* \sa ImageLinearConstIteratorWithIndex \sa ImageLinearIteratorWithIndex |
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* \sa ImageRandomConstIteratorWithIndex \sa ImageRandomIteratorWithIndex |
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* \sa ImageRegionConstIterator \sa ImageRegionConstIteratorWithIndex |
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* \sa ImageRegionExclusionConstIteratorWithIndex |
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* \sa ImageRegionExclusionIteratorWithIndex |
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* \sa ImageRegionIterator \sa ImageRegionIteratorWithIndex |
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* \sa ImageRegionReverseConstIterator \sa ImageRegionReverseIterator |
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* \sa ImageReverseConstIterator \sa ImageReverseIterator |
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* \sa ImageSliceConstIteratorWithIndex \sa ImageSliceIteratorWithIndex |
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* \sa NeighborhoodIterator \sa PathConstIterator |
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* \sa ShapedNeighborhoodIterator \sa SliceIterator |
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* \sa ImageConstIteratorWithIndex |
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* |
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* \ingroup PathObjects*/ |
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template<class TImage, class TPath> |
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class ITK_EXPORT PathIterator : public PathConstIterator<TImage, TPath> |
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{ |
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public: |
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/** Standard class typedefs. */ |
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typedef PathIterator Self; |
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/** Dimension of the image the iterator walks. This constant is needed so |
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* that functions that are templated over image iterator type (as opposed to |
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* being templated over pixel type and dimension) can have compile time |
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* access to the dimension of the image that the iterator walks. */ |
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itkStaticConstMacro(ImageIteratorDimension, unsigned int, |
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TImage::ImageDimension); |
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/** Define the superclass */ |
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typedef PathConstIterator<TImage,TPath> Superclass; |
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/** Inherit types from the superclass */ |
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typedef typename Superclass::IndexType IndexType; |
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typedef typename Superclass::IndexValueType IndexValueType; |
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typedef typename Superclass::OffsetType OffsetType; |
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typedef typename Superclass::OffsetValueType OffsetValueType; |
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typedef typename Superclass::SizeType SizeType; |
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typedef typename Superclass::SizeValueType SizeValueType; |
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typedef typename Superclass::RegionType RegionType; |
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typedef typename Superclass::ImageType ImageType; |
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typedef typename Superclass::PixelContainer PixelContainer; |
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typedef typename Superclass::PixelContainerPointer PixelContainerPointer; |
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typedef typename Superclass::InternalPixelType InternalPixelType; |
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typedef typename Superclass::PixelType PixelType; |
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typedef typename Superclass::AccessorType AccessorType; |
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typedef typename Superclass::PathType PathType; |
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typedef typename Superclass::PathInputType PathInputType; |
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typedef typename Superclass::PathOutputType PathOutputType; |
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/** Run-time type information (and related methods). */ |
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itkTypeMacro(PathIterator, PathConstIterator); |
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/** Set the pixel value */ |
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void Set( const PixelType & value) |
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{ |
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// Normally, this would just be the following: |
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// m_Image->SetPixel(m_CurrentImageIndex,value); |
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// However, we don't want a warning about m_Image being a ConstPointer |
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// in the Superclass. |
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const_cast<ImageType *>(this->m_Image.GetPointer())-> |
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******SetPixel(this->m_CurrentImageIndex,value); |
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} |
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/** Return a reference to the pixel |
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* This method will provide the fastest access to pixel |
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* data, but it will NOT support ImageAdaptors. */ |
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PixelType & Value(void) |
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{ |
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return this->GetImage()->GetPixel(this->m_ImageIndex); |
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} |
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/** operator= is provided to make sure the handles to the image and path are |
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* properly reference counted. */ |
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Self &operator=(const Self& it); |
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/** Constructor establishes an iterator to walk along a path */ |
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PathIterator(ImageType *imagePtr, const PathType *pathPtr); |
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/** Default Destructor. */ |
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virtual ~PathIterator() {}; |
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}; |
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} // end namespace itk |
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#ifndef ITK_MANUAL_INSTANTIATION |
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#include "itkPathIterator.txx" |
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#endif |
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#endif |
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