Detailed Description

template<class TImage, class TPath>
class itk::PathConstIterator< TImage, TPath >

PathConstIterator iterates (traces) over a path through an image.

This iterator visits only those indices of the image that are overlapped by a specified 1D path. All indices are visited in path order. If a path crosses itself at an index, that index of the image will be visited twice. An exception to this rule is that if the path is closed, i.e. its starting and ending indices are coincident. When starting and ending indices are coincident, GoToBegin() will go to the second index, since the "first" index will be visited later as the "last" index. This is so that paths (especially parametric paths) can be properly closed, without double-visiting the starting/ending point. This behavior can be overridden by calling VisitStartIndexAsLastIndexIfClosed(false) before calling GoToBegin(). This class is the const version of the PathIterator, and for this reason it doesn't support the Set() method.

MORE INFORMATION: For a complete description of the ITK Image Iterators and their API, please see the Iterators chapter in the ITK Software Guide. The ITK Software Guide is available in print and as a free .pdf download from http://www.itk.org.

See Also: ImageConstIterator; ConditionalConstIterator; ConstNeighborhoodIterator; ConstShapedNeighborhoodIterator; ConstSliceIterator; CorrespondenceDataStructureIterator; FloodFilledFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalIterator; FloodFilledSpatialFunctionConditionalConstIterator; FloodFilledSpatialFunctionConditionalIterator; ImageConstIterator; ImageConstIteratorWithIndex; ImageIterator; ImageIteratorWithIndex; ImageLinearConstIteratorWithIndex; ImageLinearIteratorWithIndex; ImageRandomConstIteratorWithIndex; ImageRandomIteratorWithIndex; ImageRegionConstIterator; ImageRegionConstIteratorWithIndex; ImageRegionExclusionConstIteratorWithIndex; ImageRegionExclusionIteratorWithIndex; ImageRegionIterator; ImageRegionIteratorWithIndex; ImageRegionReverseConstIterator; ImageRegionReverseIterator; ImageReverseConstIterator; ImageReverseIterator; ImageSliceConstIteratorWithIndex; ImageSliceIteratorWithIndex; NeighborhoodIterator; PathIterator; ShapedNeighborhoodIterator; SliceIterator; ImageConstIteratorWithIndex

Definition at line 75 of file itkPathConstIterator.h.

Public Types
typedef TImage::AccessorType	AccessorType

typedef TImage	ImageType

typedef TImage::IndexType	IndexType

typedef TImage::InternalPixelType	InternalPixelType

typedef TImage::OffsetType	OffsetType

typedef PathType::InputType	PathInputType

typedef PathType::OutputType	PathOutputType

typedef TPath	PathType

typedef TImage::PixelContainer	PixelContainer

typedef PixelContainer::Pointer	PixelContainerPointer

typedef TImage::PixelType	PixelType

typedef TImage::PointType	PointType

typedef TImage::RegionType	RegionType

typedef PathConstIterator	Self

typedef TImage::SizeType	SizeType

typedef TImage::SpacingType	SpacingType

Public Member Functions
const PixelType &	Get (void) const

const IndexType	GetIndex ()

virtual const char *	GetNameOfClass () const

const PathInputType	GetPathPosition ()

void	GoToBegin ()

bool	IsAtEnd ()

void	operator++ ()

Self &	operator= (const Self &it)

	PathConstIterator (const ImageType imagePtr, const PathType pathPtr)

virtual void	VisitStartIndexAsLastIndexIfClosed (bool flag)

virtual	~PathConstIterator ()

Static Public Member Functions
static unsigned int	GetImageIteratorDimension ()

Static Public Attributes
static const unsigned int	ImageIteratorDimension = TImage::ImageDimension

Protected Attributes
IndexType	m_CurrentImageIndex

PathInputType	m_CurrentPathPosition

ImageType::ConstWeakPointer	m_Image

PointType	m_ImageOrigin

const SizeValueType *	m_ImageSize

SpacingType	m_ImageSpacing

bool	m_IsAtEnd

PathType::ConstPointer	m_Path

RegionType	m_Region

bool	m_VisitStartIndexAsLastIndexIfClosed

OffsetType	m_ZeroOffset