Detailed Description

template<typename TImage, typename 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 https://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
using	AccessorType = typename TImage::AccessorType

using	ImageType = TImage

using	IndexType = typename TImage::IndexType

using	InternalPixelType = typename TImage::InternalPixelType

using	OffsetType = typename TImage::OffsetType

using	PathInputType = typename PathType::InputType

using	PathOutputType = typename PathType::OutputType

using	PathType = TPath

using	PixelContainer = typename TImage::PixelContainer

using	PixelContainerPointer = typename PixelContainer::Pointer

using	PixelType = typename TImage::PixelType

using	PointType = typename TImage::PointType

using	RegionType = typename TImage::RegionType

using	Self = PathConstIterator

using	SizeType = typename TImage::SizeType

using	SpacingType = typename TImage::SpacingType

Public Member Functions
const PixelType &	Get () const

const IndexType	GetIndex ()

const PathInputType	GetPathPosition ()

void	GoToBegin ()

bool	IsAtEnd () const

	itkTypeMacroNoParent (PathConstIterator)

void	operator++ ()

Self &	operator= (const Self &it)

	PathConstIterator (const ImageType imagePtr, const PathType pathPtr)

virtual void	VisitStartIndexAsLastIndexIfClosed (bool flag)

virtual	~PathConstIterator ()=default

Static Public Member Functions
static unsigned int	GetImageIteratorDimension ()

Static Public Attributes
static constexpr 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