itk::ChainCodePath2D Class Reference
[Path Representation Objects]

Represent a 2D path as a sequence of connected image index offsets. More...

#include <itkChainCodePath2D.h>

Inheritance diagram for itk::ChainCodePath2D:

[legend]Collaboration diagram for itk::ChainCodePath2D:

[legend]List of all members.

Public Types
typedef ChainCodePath2D	Self
typedef ChainCodePath< 2 >	Superclass
typedef SmartPointer< Self >	Pointer
typedef SmartPointer< const Self >	ConstPointer
typedef Superclass::OutputType	OutputType
typedef Superclass::InputType	InputType
typedef OutputType	OffsetType
typedef Index< 2 >	IndexType
typedef std::vector< OffsetType >	ChainCodeType
typedef std::vector< int >	ChainCode2DType
Public Member Functions
	itkStaticConstMacro (Dimension, unsigned int, 2)
virtual const char *	GetClassName () const
virtual OutputType	Evaluate (const InputType &input) const
virtual IndexType	EvaluateToIndex (const InputType &input) const
virtual OffsetType	IncrementInput (InputType &input) const
unsigned int	NumberOfSteps () const
std::string	GetChainCodeAsString (void) const
void	InsertStep (InputType position, int encodedStep)
void	InsertStep (InputType position, OffsetType step)
void	ChangeStep (InputType position, int encodedStep)
void	ChangeStep (InputType position, OffsetType step)
virtual void	Clear ()
Static Public Member Functions
Pointer	New ()
Protected Member Functions
	ChainCodePath2D ()
	~ChainCodePath2D ()
void	PrintSelf (std::ostream &os, Indent indent) const
int	EncodeOffset (OffsetType step) const
OffsetType	DecodeOffset (int encodedStep) const

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Detailed Description

Represent a 2D path as a sequence of connected image index offsets.

This class is intended to represent sequences of connected indices in a 2D image plane. It does so by storing the offset of each index from its immediately preceeding, connected, index using a standard Freeman code (1=up, 2=up to the right, and so on proceeding clockwise to 8=up to the left). The only image index stored directly is that of the first index. ChainCodePath2D maps a 1D integer input (step number) to a 2D interger output (either an offset or an image index, depending on whether Evaluate or EvaluateToIndex is called).

See also:

ChainCodePath

ParametricPath

Path

Index

Definition at line 50 of file itkChainCodePath2D.h.

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Member Typedef Documentation

typedef std::vector<int> itk::ChainCodePath2D::ChainCode2DType

ChainCodePath2D stores its data as a Freeman-encoded chain code Definition at line 80 of file itkChainCodePath2D.h. Referenced by DecodeOffset().

typedef std::vector<OffsetType> itk::ChainCodePath2D::ChainCodeType

ChainCodeType is a usless relic of the parent class Reimplemented from itk::ChainCodePath< 2 >. Definition at line 77 of file itkChainCodePath2D.h.

typedef SmartPointer<const Self> itk::ChainCodePath2D::ConstPointer

Reimplemented from itk::ChainCodePath< 2 >. Definition at line 62 of file itkChainCodePath2D.h.

typedef Index<2> itk::ChainCodePath2D::IndexType

All paths must be mapable to index space Reimplemented from itk::ChainCodePath< 2 >. Definition at line 74 of file itkChainCodePath2D.h.

typedef Superclass::InputType itk::ChainCodePath2D::InputType

Input type Reimplemented from itk::ChainCodePath< 2 >. Definition at line 70 of file itkChainCodePath2D.h. Referenced by NumberOfSteps().

typedef OutputType itk::ChainCodePath2D::OffsetType

The output type of this function is an Index Reimplemented from itk::ChainCodePath< 2 >. Definition at line 73 of file itkChainCodePath2D.h. Referenced by DecodeOffset(), EncodeOffset(), and ~ChainCodePath2D().

typedef Superclass::OutputType itk::ChainCodePath2D::OutputType

OutputType typedef support. Reimplemented from itk::ChainCodePath< 2 >. Definition at line 69 of file itkChainCodePath2D.h.

typedef SmartPointer<Self> itk::ChainCodePath2D::Pointer

Reimplemented from itk::ChainCodePath< 2 >. Definition at line 61 of file itkChainCodePath2D.h.

typedef ChainCodePath2D itk::ChainCodePath2D::Self

Standard class typedefs. Reimplemented from itk::ChainCodePath< 2 >. Definition at line 58 of file itkChainCodePath2D.h. Referenced by DecodeOffset().

typedef ChainCodePath<2> itk::ChainCodePath2D::Superclass

Reimplemented from itk::ChainCodePath< 2 >. Definition at line 59 of file itkChainCodePath2D.h.

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Constructor & Destructor Documentation

itk::ChainCodePath2D::ChainCodePath2D (   )  [protected]

itk::ChainCodePath2D::~ChainCodePath2D (   )  [inline, protected]

Definition at line 150 of file itkChainCodePath2D.h. References OffsetType.

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Member Function Documentation

void itk::ChainCodePath2D::ChangeStep (  InputType  position, OffsetType  step )  [inline, virtual]

Change the direction of a step in the chaincode Reimplemented from itk::ChainCodePath< 2 >. Definition at line 129 of file itkChainCodePath2D.h.

void itk::ChainCodePath2D::ChangeStep (  InputType  position, int  encodedStep )  [inline]

Change the direction of a step in the chaincode Definition at line 124 of file itkChainCodePath2D.h.

virtual void itk::ChainCodePath2D::Clear (   )  [inline, virtual]

Remove all steps from the chain code Reimplemented from itk::ChainCodePath< 2 >. Definition at line 137 of file itkChainCodePath2D.h.

OffsetType itk::ChainCodePath2D::DecodeOffset (  int  encodedStep  )  const [inline, protected]

Encode and Decode between an offset and a Freeman code Definition at line 158 of file itkChainCodePath2D.h. References ChainCode2DType, OffsetType, and Self.

int itk::ChainCodePath2D::EncodeOffset (  OffsetType  step  )  const [inline, protected]

Encode and Decode between an offset and a Freeman code Definition at line 154 of file itkChainCodePath2D.h. References OffsetType.

virtual OutputType itk::ChainCodePath2D::Evaluate (  const InputType &  input  )  const [virtual]

Evaluate the chaincode for the offset at the specified path-position. Reimplemented from itk::ChainCodePath< 2 >.

virtual IndexType itk::ChainCodePath2D::EvaluateToIndex (  const InputType &  input  )  const [virtual]

Like Evaluate(), but returns the index at the specified path-position. Reimplemented from itk::ChainCodePath< 2 >.

std::string itk::ChainCodePath2D::GetChainCodeAsString (  void   )  const

virtual const char* itk::ChainCodePath2D::GetClassName (   )  const [virtual]

Run-time type information (and related methods). Reimplemented from itk::ChainCodePath< 2 >.

virtual OffsetType itk::ChainCodePath2D::IncrementInput (  InputType &  input  )  const [virtual]

Increment the input variable passed by reference and return the offset stored at the previous path-position. If the chaincode is unable to be incremented, input is not changed and an offset of zero is returned, which may be used to check for the end of the chain code. Reimplemented from itk::ChainCodePath< 2 >.

void itk::ChainCodePath2D::InsertStep (  InputType  position, OffsetType  step )  [inline, virtual]

Insert a new step into the chaincode at a specified position Reimplemented from itk::ChainCodePath< 2 >. Definition at line 115 of file itkChainCodePath2D.h.

void itk::ChainCodePath2D::InsertStep (  InputType  position, int  encodedStep )  [inline]

Insert a new step into the chaincode at a specified position Definition at line 110 of file itkChainCodePath2D.h.

itk::ChainCodePath2D::itkStaticConstMacro (  Dimension  , unsigned  int, 2  )

Dimension underlying input image.

Pointer itk::ChainCodePath2D::New (   )  [static]

New() method for dynamic construction Reimplemented from itk::ChainCodePath< 2 >.

unsigned int itk::ChainCodePath2D::NumberOfSteps (   )  const [inline, virtual]

How many steps in the chaincode? Reimplemented from itk::ChainCodePath< 2 >. Definition at line 106 of file itkChainCodePath2D.h. References InputType.

void itk::ChainCodePath2D::PrintSelf (  std::ostream &  os, Indent  indent )  const [protected, virtual]

Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from itk::ChainCodePath< 2 >.

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The documentation for this class was generated from the following file:

• itkChainCodePath2D.h

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