itk::OctreeNode Class Reference

#include <itkOctreeNode.h>

Collaboration diagram for itk::OctreeNode:

Detailed Description

A data structure representing a node in an Octree.

OctreeNode is the basic building block of an octree. It is rarely used by itself, and commonly used by the Octree class.

OctreeNodes have two states: 1) They are a Colored node and the m_Branch is a sentinal value indicating the color, or 2) they are a branch node, and m_Branch is a dynamically allocated array of 8 pointers to OctreeNodes. In the second state, the 8 child OctreeNodes are instantiated by the parent node.

Author

Hans J. Johnson

Todo:

FIXME copy & paste documentation in all methods.

Definition at line 45 of file itkOctreeNode.h.

Public Member Functions
long int	GetColor () const
bool	IsNodeColored () const
	OctreeNode ()
void	SetBranch (OctreeNodeBranch *NewBranch)
void	SetColor (int NodeColor)
void	SetParentOctree (OctreeBase *parent)
virtual	~OctreeNode ()
OctreeNode &	GetChild (const enum LeafIdentifier ChildID) const
OctreeNode &	GetChild (const enum LeafIdentifier ChildID)

Private Member Functions
void	RemoveChildren ()

Private Attributes
OctreeNodeBranch *	m_Branch
OctreeBase *	m_Parent

Constructor & Destructor Documentation

itk::OctreeNode::OctreeNode

(

)

Default constructor

Postcondition

After construction, it is assumed all children of this node are colored with values of 0.

virtual itk::OctreeNode::~OctreeNode ( )

virtual

Default destructor

Member Function Documentation

OctreeNode& itk::OctreeNode::GetChild

(

const enum LeafIdentifier

ChildID

)

const

Returns the value of the specified Child for this OctreeNode

Parameters

ChildID

The numerical identifier of the desired child.

Returns

A pointer to the Desired child. NOTE: This is always an instance of an OctreeNode.

OctreeNode& itk::OctreeNode::GetChild

(

const enum LeafIdentifier

ChildID

)

Returns the value of the specified Child for this OctreeNode

Parameters

ChildID

The numerical identifier of the desired child.

Returns

A pointer to the Desired child. NOTE: This is always an instance of an OctreeNode.

long int itk::OctreeNode::GetColor

(

)

const

Determines the color value of the specified Child for this OctreeNode

Precondition

Must determine that the specified node is colored (Use IsNodeColored() member function. Behavior is undefined when the child is another Octree.

Returns

A value between 0 and 255 to indicate the color of the Desired child.

bool itk::OctreeNode::IsNodeColored

(

)

const

Determines if the child is a leaf node (colored), or a branch node (uncolored)

Returns

true if it is colored, false if it is not

void itk::OctreeNode::RemoveChildren ( )

private

Removes all children from this node down, and sets the value value of the children to background.

void itk::OctreeNode::SetBranch

(

OctreeNodeBranch *

NewBranch

)

Sets the color value of the specified Child for this OctreeNode

Postcondition

All children of the specified child are removed, and the child is set to the desired value.

Referenced by itk::Octree< TPixel, ColorTableSize, MappingFunctionType >::SetTree().

void itk::OctreeNode::SetColor

(

int

NodeColor

)

Sets the color value of the specified Child for this OctreeNode

Parameters

NodeColor

The desired color of this node.

Postcondition

All children of the specified child are removed, and the child is set to the desired value.

Referenced by itk::Octree< TPixel, ColorTableSize, MappingFunctionType >::SetColor().

void itk::OctreeNode::SetParentOctree ( OctreeBase *  parent )

inline

Definition at line 102 of file itkOctreeNode.h.

Referenced by itk::OctreeNodeBranch::OctreeNodeBranch().

Member Data Documentation

OctreeNodeBranch* itk::OctreeNode::m_Branch

private

Each element holds COLOR or pointer to another octree node

Definition at line 119 of file itkOctreeNode.h.

OctreeBase* itk::OctreeNode::m_Parent

private

Definition at line 120 of file itkOctreeNode.h.

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

• itkOctreeNode.h