A node in the volume octree. More...

#include <OgreVolumeOctreeNode.h>

Inheritance diagram for Ogre::Volume::OctreeNode:

Public Member Functions
	OctreeNode (const Vector3 &from=Vector3::ZERO, const Vector3 &to=Vector3::ZERO)
	Constructor. More...

virtual	~OctreeNode (void)
	Destructor. More...

virtual OctreeNode *	createInstance (const Vector3 &from, const Vector3 &to)
	Factory method to create octree nodes. More...

const Vector3	getCenter (void) const
	Gets the center of this cell. More...

const Vector3	getCenterBack (void) const
	Gets the center of the corners 0, 1, 4, 5. More...

const Vector3	getCenterBackBottom (void) const
	Gets the center of the corners 0, 1. More...

const Vector3	getCenterBackLeft (void) const
	Gets the center of the corners 0, 4. More...

const Vector3	getCenterBackRight (void) const
	Gets the center of the corners 1, 5. More...

const Vector3	getCenterBackTop (void) const
	Gets the center of the corners 4, 5. More...

const Vector3	getCenterBottom (void) const
	Gets the center of the corners 0, 1, 2, 3. More...

const Vector3	getCenterFront (void) const
	Gets the center of the corners 2, 3, 6, 7. More...

const Vector3	getCenterFrontBottom (void) const
	Gets the center of the corners 2, 3. More...

const Vector3	getCenterFrontLeft (void) const
	Gets the center of the corners 3, 7. More...

const Vector3	getCenterFrontRight (void) const
	Gets the center of the corners 2, 6. More...

const Vector3	getCenterFrontTop (void) const
	Gets the center of the corners 6, 7. More...

const Vector3	getCenterLeft (void) const
	Gets the center of the corners 0, 3, 4, 6. More...

const Vector3	getCenterLeftBottom (void) const
	Gets the center of the corners 0, 3. More...

const Vector3	getCenterLeftTop (void) const
	Gets the center of the corners 4, 7. More...

const Vector3	getCenterRight (void) const
	Gets the center of the corners 1, 2, 5, 6. More...

const Vector3	getCenterRightBottom (void) const
	Gets the center of the corners 1, 2. More...

const Vector3	getCenterRightTop (void) const
	Gets the center of the corners 5, 6. More...

const Vector3	getCenterTop (void) const
	Gets the center of the corners 4, 5, 6, 7. More...

const Vector4	getCenterValue (void) const
	Gets the center value. More...

const OctreeNode *	getChild (const size_t i) const
	Gets an octree child. More...

const Vector3	getCorner1 (void) const
	Gets the coordinate of corner 1. More...

const Vector3	getCorner2 (void) const
	Gets the coordinate of corner 2. More...

const Vector3	getCorner3 (void) const
	Gets the coordinate of corner 3. More...

const Vector3	getCorner4 (void) const
	Gets the coordinate of corner 4. More...

const Vector3	getCorner5 (void) const
	Gets the coordinate of corner 5. More...

const Vector3	getCorner7 (void) const
	Gets the coordinate of corner 7. More...

const Vector3 &	getFrom (void) const
	Gets the back lower left corner of the cell. More...

Entity *	getOctreeGrid (SceneManager *sceneManager)
	Getter for the octree debug visualization of the octree starting with this node. More...

const Vector3 &	getTo (void) const
	Gets the front upper right corner of the cell. More...

bool	isBorderBack (const OctreeNode &root) const
	Gets whether this cell is at the back of the given root cell. More...

bool	isBorderBottom (const OctreeNode &root) const
	Gets whether this cell is at the bottom of the given root cell. More...

bool	isBorderFront (const OctreeNode &root) const
	Gets whether this cell is at the front of the given root cell. More...

bool	isBorderLeft (const OctreeNode &root) const
	Gets whether this cell is at the left of the given root cell. More...

bool	isBorderRight (const OctreeNode &root) const
	Gets whether this cell is at the right of the given root cell. More...

bool	isBorderTop (const OctreeNode &root) const
	Gets whether this cell is at the top of the given root cell. More...

bool	isIsoSurfaceNear (void) const
	Gets whether the isosurface is somewhat near to this node. More...

bool	isSubdivided (void) const
	Gets whether this cell has any children. More...

void	setCenterValue (Vector4 value)
	Raw setter for the center value. More...

void	setFrom (Vector3 from)
	Setter for the from-part of this cell. More...

void	setTo (Vector3 to)
	Setter for the to-part of this cell. More...

void	split (const OctreeNodeSplitPolicy splitPolicy, const Source src, const Real geometricError)
	Splits this cell if the split policy says so. More...

Static Public Member Functions
static void	getChildrenDimensions (const Vector3 &from, const Vector3 &to, Vector3 &center, Vector3 &width, Vector3 &height, Vector3 &depth)
	Gets the center and width / height / depth vector of the children of a node. More...

Static Public Attributes
static const size_t	OCTREE_CHILDREN_COUNT
	Even in an OCtree, the amount of children should not be hardcoded. More...

Detailed Description

A node in the volume octree.

Constructor & Destructor Documentation

◆ OctreeNode()

Ogre::Volume::OctreeNode::OctreeNode	(	const Vector3 &	from = `Vector3::ZERO`,
		const Vector3 &	to = `Vector3::ZERO`
	)

Constructor.

Parameters

from	The back lower left corner of the cell.
to	The front upper right corner of the cell.

◆ ~OctreeNode()

virtual Ogre::Volume::OctreeNode::~OctreeNode ( void )

virtual

Destructor.

Member Function Documentation

◆ getChildrenDimensions()

static void Ogre::Volume::OctreeNode::getChildrenDimensions	(	const Vector3 &	from,
		const Vector3 &	to,
		Vector3 &	center,
		Vector3 &	width,
		Vector3 &	height,
		Vector3 &	depth
	)

inlinestatic

Gets the center and width / height / depth vector of the children of a node.

Parameters

from	The back lower left corner of the cell.
to	The front upper right corner of the cell.
center	Out parameter of the calculated center.
width	Out parameter of the width vector (width in x, rest zero).
height	Out parameter of the height vector (height in y, rest zero).
depth	Out parameter of the depth vector (depth in z, rest zero).

References Ogre::Vector3::x, Ogre::Vector3::y, Ogre::Vector3::z, and Ogre::Vector3::ZERO.

◆ createInstance()

virtual OctreeNode* Ogre::Volume::OctreeNode::createInstance	(	const Vector3 &	from,
		const Vector3 &	to
	)

virtual

Factory method to create octree nodes.

Parameters

from	The back lower left corner of the cell.
to	The front upper right corner of the cell.

Returns: The created entity. Make sure to destroy it when you don't need it anymore.

◆ split()

void Ogre::Volume::OctreeNode::split	(	const OctreeNodeSplitPolicy *	splitPolicy,
		const Source *	src,
		const Real	geometricError
	)

Splits this cell if the split policy says so.

Parameters

splitPolicy	Defines the policy deciding whether to split this node or not.
src	The volume source.
geometricError	The accepted geometric error.

◆ getOctreeGrid()

Entity* Ogre::Volume::OctreeNode::getOctreeGrid ( SceneManager * sceneManager )

Getter for the octree debug visualization of the octree starting with this node.

Parameters

sceneManager The scenemanager creating the actual entity.

Returns: The lazily created debug visualization.

◆ setFrom()

void Ogre::Volume::OctreeNode::setFrom ( Vector3 from )

inline

Setter for the from-part of this cell.

Parameters

from	The back lower left corner of the cell.

◆ setTo()

void Ogre::Volume::OctreeNode::setTo ( Vector3 to )

inline

Setter for the to-part of this cell.

Parameters

to	The front upper right corner of the cell.

◆ isSubdivided()

bool Ogre::Volume::OctreeNode::isSubdivided ( void ) const

inline

Gets whether this cell has any children.

Returns: True if so.

◆ getChild()

const OctreeNode* Ogre::Volume::OctreeNode::getChild ( const size_t i ) const

inline

Gets an octree child.

Enumeration: 4 5 7 6 0 1 3 2

Parameters

i	The child index.

Returns: The child.

◆ getCenter()

const Vector3 Ogre::Volume::OctreeNode::getCenter ( void ) const

inline

Gets the center of this cell.

Returns: The center.

◆ getFrom()

const Vector3& Ogre::Volume::OctreeNode::getFrom ( void ) const

inline

Gets the back lower left corner of the cell.

Returns: The back lower left corner of the cell.

◆ getTo()

const Vector3& Ogre::Volume::OctreeNode::getTo ( void ) const

inline

Gets the front upper right corner of the cell.

Returns: The front upper right corner of the cell.

◆ isBorderLeft()

bool Ogre::Volume::OctreeNode::isBorderLeft ( const OctreeNode & root ) const

inline

Gets whether this cell is at the left of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::x.

◆ isBorderRight()

bool Ogre::Volume::OctreeNode::isBorderRight ( const OctreeNode & root ) const

inline

Gets whether this cell is at the right of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::x.

◆ isBorderBottom()

bool Ogre::Volume::OctreeNode::isBorderBottom ( const OctreeNode & root ) const

inline

Gets whether this cell is at the bottom of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::y.

◆ isBorderTop()

bool Ogre::Volume::OctreeNode::isBorderTop ( const OctreeNode & root ) const

inline

Gets whether this cell is at the top of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::y.

◆ isBorderBack()

bool Ogre::Volume::OctreeNode::isBorderBack ( const OctreeNode & root ) const

inline

Gets whether this cell is at the back of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::z.

◆ isBorderFront()

bool Ogre::Volume::OctreeNode::isBorderFront ( const OctreeNode & root ) const

inline

Gets whether this cell is at the front of the given root cell.

Parameters

root	The octree root node to test against.

Returns: true if so.

References Ogre::Vector3::z.

◆ getCenterBack()

const Vector3 Ogre::Volume::OctreeNode::getCenterBack ( void ) const

inline

Gets the center of the corners 0, 1, 4, 5.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterFront()

const Vector3 Ogre::Volume::OctreeNode::getCenterFront ( void ) const

inline

Gets the center of the corners 2, 3, 6, 7.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterLeft()

const Vector3 Ogre::Volume::OctreeNode::getCenterLeft ( void ) const

inline

Gets the center of the corners 0, 3, 4, 6.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterRight()

const Vector3 Ogre::Volume::OctreeNode::getCenterRight ( void ) const

inline

Gets the center of the corners 1, 2, 5, 6.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterTop()

const Vector3 Ogre::Volume::OctreeNode::getCenterTop ( void ) const

inline

Gets the center of the corners 4, 5, 6, 7.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterBottom()

const Vector3 Ogre::Volume::OctreeNode::getCenterBottom ( void ) const

inline

Gets the center of the corners 0, 1, 2, 3.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterBackTop()

const Vector3 Ogre::Volume::OctreeNode::getCenterBackTop ( void ) const

inline

Gets the center of the corners 4, 5.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterBackBottom()

const Vector3 Ogre::Volume::OctreeNode::getCenterBackBottom ( void ) const

inline

Gets the center of the corners 0, 1.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterFrontTop()

const Vector3 Ogre::Volume::OctreeNode::getCenterFrontTop ( void ) const

inline

Gets the center of the corners 6, 7.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterFrontBottom()

const Vector3 Ogre::Volume::OctreeNode::getCenterFrontBottom ( void ) const

inline

Gets the center of the corners 2, 3.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterLeftTop()

const Vector3 Ogre::Volume::OctreeNode::getCenterLeftTop ( void ) const

inline

Gets the center of the corners 4, 7.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterLeftBottom()

const Vector3 Ogre::Volume::OctreeNode::getCenterLeftBottom ( void ) const

inline

Gets the center of the corners 0, 3.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterRightTop()

const Vector3 Ogre::Volume::OctreeNode::getCenterRightTop ( void ) const

inline

Gets the center of the corners 5, 6.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterRightBottom()

const Vector3 Ogre::Volume::OctreeNode::getCenterRightBottom ( void ) const

inline

Gets the center of the corners 1, 2.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterBackLeft()

const Vector3 Ogre::Volume::OctreeNode::getCenterBackLeft ( void ) const

inline

Gets the center of the corners 0, 4.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterFrontLeft()

const Vector3 Ogre::Volume::OctreeNode::getCenterFrontLeft ( void ) const

inline

Gets the center of the corners 3, 7.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterBackRight()

const Vector3 Ogre::Volume::OctreeNode::getCenterBackRight ( void ) const

inline

Gets the center of the corners 1, 5.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCenterFrontRight()

const Vector3 Ogre::Volume::OctreeNode::getCenterFrontRight ( void ) const

inline

Gets the center of the corners 2, 6.

Returns: The center.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner1()

const Vector3 Ogre::Volume::OctreeNode::getCorner1 ( void ) const

inline

Gets the coordinate of corner 1.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner2()

const Vector3 Ogre::Volume::OctreeNode::getCorner2 ( void ) const

inline

Gets the coordinate of corner 2.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner3()

const Vector3 Ogre::Volume::OctreeNode::getCorner3 ( void ) const

inline

Gets the coordinate of corner 3.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner4()

const Vector3 Ogre::Volume::OctreeNode::getCorner4 ( void ) const

inline

Gets the coordinate of corner 4.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner5()

const Vector3 Ogre::Volume::OctreeNode::getCorner5 ( void ) const

inline

Gets the coordinate of corner 5.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ getCorner7()

const Vector3 Ogre::Volume::OctreeNode::getCorner7 ( void ) const

inline

Gets the coordinate of corner 7.

Returns: The corner.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

◆ setCenterValue()

void Ogre::Volume::OctreeNode::setCenterValue ( Vector4 value )

inline

Raw setter for the center value.

Parameters

value The density value.

◆ getCenterValue()

const Vector4 Ogre::Volume::OctreeNode::getCenterValue ( void ) const

inline

Gets the center value.

Returns: The center value, one Vector4 consisting of gradient (x, y, z) and density (w).

◆ isIsoSurfaceNear()

bool Ogre::Volume::OctreeNode::isIsoSurfaceNear ( void ) const

inline

Gets whether the isosurface is somewhat near to this node.

Returns: true if somewhat near.

References Ogre::Math::Abs(), and Ogre::Vector4::w.

Member Data Documentation

◆ OCTREE_CHILDREN_COUNT

const size_t Ogre::Volume::OctreeNode::OCTREE_CHILDREN_COUNT

static

Even in an OCtree, the amount of children should not be hardcoded.

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

OgreVolumeOctreeNode.h

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ OctreeNode()

◆ ~OctreeNode()

Member Function Documentation

◆ getChildrenDimensions()

◆ createInstance()

◆ split()

◆ getOctreeGrid()

◆ setFrom()

◆ setTo()

◆ isSubdivided()

◆ getChild()

◆ getCenter()

◆ getFrom()

◆ getTo()

◆ isBorderLeft()

◆ isBorderRight()

◆ isBorderBottom()

◆ isBorderTop()

◆ isBorderBack()

◆ isBorderFront()

◆ getCenterBack()

◆ getCenterFront()

◆ getCenterLeft()

◆ getCenterRight()

◆ getCenterTop()

◆ getCenterBottom()

◆ getCenterBackTop()

◆ getCenterBackBottom()

◆ getCenterFrontTop()

◆ getCenterFrontBottom()

◆ getCenterLeftTop()

◆ getCenterLeftBottom()

◆ getCenterRightTop()

◆ getCenterRightBottom()

◆ getCenterBackLeft()

◆ getCenterFrontLeft()

◆ getCenterBackRight()

◆ getCenterFrontRight()

◆ getCorner1()

◆ getCorner2()

◆ getCorner3()

◆ getCorner4()

◆ getCorner5()

◆ getCorner7()

◆ setCenterValue()

◆ getCenterValue()

◆ isIsoSurfaceNear()

Member Data Documentation

◆ OCTREE_CHILDREN_COUNT