Ogre::SceneNode Class Reference

Class representing a node in the scene graph. More...

#include <OgreSceneNode.h>

Inheritance diagram for Ogre::SceneNode:

[legend]

List of all members.

Public Types
typedef HashMap < String, MovableObject * >	ObjectMap
typedef MapIterator < ObjectMap >	ObjectIterator
typedef ConstMapIterator < ObjectMap >	ConstObjectIterator
enum	TransformSpace { TS_LOCAL, TS_PARENT, TS_WORLD }
	Enumeration denoting the spaces which a transform can be relative to. More...
typedef HashMap < String, Node * >	ChildNodeMap
typedef MapIterator < ChildNodeMap >	ChildNodeIterator
typedef ConstMapIterator < ChildNodeMap >	ConstChildNodeIterator
Public Member Functions
	SceneNode (SceneManager *creator)
	Constructor, only to be called by the creator SceneManager.
	SceneNode (SceneManager *creator, const String &name)
	Constructor, only to be called by the creator SceneManager.
	~SceneNode ()
virtual void	attachObject (MovableObject *obj)
	Adds an instance of a scene object to this node.
virtual unsigned short	numAttachedObjects (void) const
	Reports the number of objects attached to this node.
virtual MovableObject *	getAttachedObject (unsigned short index)
	Retrieves a pointer to an attached object.
virtual MovableObject *	getAttachedObject (const String &name)
	Retrieves a pointer to an attached object.
virtual MovableObject *	detachObject (unsigned short index)
	Detaches the indexed object from this scene node.
virtual void	detachObject (MovableObject *obj)
	Detaches an object by pointer.
virtual MovableObject *	detachObject (const String &name)
	Detaches the named object from this node and returns a pointer to it.
virtual void	detachAllObjects (void)
	Detaches all objects attached to this node.
virtual bool	isInSceneGraph (void) const
	Determines whether this node is in the scene graph, i.e.
virtual void	_notifyRootNode (void)
	Notifies this SceneNode that it is the root scene node.
virtual void	_update (bool updateChildren, bool parentHasChanged)
	Internal method to update the Node.
virtual void	_updateBounds (void)
	Tells the SceneNode to update the world bound info it stores.
virtual void	_findVisibleObjects (Camera *cam, RenderQueue *queue, VisibleObjectsBoundsInfo *visibleBounds, bool includeChildren=true, bool displayNodes=false, bool onlyShadowCasters=false)
	Internal method which locates any visible objects attached to this node and adds them to the passed in queue.
virtual const AxisAlignedBox &	_getWorldAABB (void) const
	Gets the axis-aligned bounding box of this node (and hence all subnodes).
virtual ObjectIterator	getAttachedObjectIterator (void)
	Retrieves an iterator which can be used to efficiently step through the objects attached to this node.
virtual ConstObjectIterator	getAttachedObjectIterator (void) const
	Retrieves an iterator which can be used to efficiently step through the objects attached to this node.
SceneManager *	getCreator (void) const
	Gets the creator of this scene node.
virtual void	removeAndDestroyChild (const String &name)
	This method removes and destroys the named child and all of its children.
virtual void	removeAndDestroyChild (unsigned short index)
	This method removes and destroys the child and all of its children.
virtual void	removeAndDestroyAllChildren (void)
	Removes and destroys all children of this node.
virtual void	showBoundingBox (bool bShow)
	Allows the showing of the node's bounding box.
virtual void	_addBoundingBoxToQueue (RenderQueue *queue)
	Add the bounding box to the rendering queue.
virtual bool	getShowBoundingBox () const
	This allows scene managers to determine if the node's bounding box should be added to the rendering queue.
virtual SceneNode *	createChildSceneNode (const Vector3 &translate=Vector3::ZERO, const Quaternion &rotate=Quaternion::IDENTITY)
	Creates an unnamed new SceneNode as a child of this node.
virtual SceneNode *	createChildSceneNode (const String &name, const Vector3 &translate=Vector3::ZERO, const Quaternion &rotate=Quaternion::IDENTITY)
	Creates a new named SceneNode as a child of this node.
virtual void	findLights (LightList &destList, Real radius) const
	Allows retrieval of the nearest lights to the centre of this SceneNode.
virtual void	setFixedYawAxis (bool useFixed, const Vector3 &fixedAxis=Vector3::UNIT_Y)
	Tells the node whether to yaw around it's own local Y axis or a fixed axis of choice.
virtual void	yaw (const Radian &angle, TransformSpace relativeTo=TS_LOCAL)
	Rotate the node around the Y-axis.
virtual void	setDirection (Real x, Real y, Real z, TransformSpace relativeTo=TS_LOCAL, const Vector3 &localDirectionVector=Vector3::NEGATIVE_UNIT_Z)
	Sets the node's direction vector ie it's local -z.
virtual void	setDirection (const Vector3 &vec, TransformSpace relativeTo=TS_LOCAL, const Vector3 &localDirectionVector=Vector3::NEGATIVE_UNIT_Z)
	Sets the node's direction vector ie it's local -z.
virtual void	lookAt (const Vector3 &targetPoint, TransformSpace relativeTo, const Vector3 &localDirectionVector=Vector3::NEGATIVE_UNIT_Z)
	Points the local -Z direction of this node at a point in space.
virtual void	setAutoTracking (bool enabled, SceneNode *target=0, const Vector3 &localDirectionVector=Vector3::NEGATIVE_UNIT_Z, const Vector3 &offset=Vector3::ZERO)
	Enables / disables automatic tracking of another SceneNode.
virtual SceneNode *	getAutoTrackTarget (void)
	Get the auto tracking target for this node, if any.
virtual const Vector3 &	getAutoTrackOffset (void)
	Get the auto tracking offset for this node, if the node is auto tracking.
virtual const Vector3 &	getAutoTrackLocalDirection (void)
	Get the auto tracking local direction for this node, if it is auto tracking.
void	_autoTrack (void)
	Internal method used by OGRE to update auto-tracking cameras.
SceneNode *	getParentSceneNode (void) const
	Gets the parent of this SceneNode.
virtual void	setVisible (bool visible, bool cascade=true)
	Makes all objects attached to this node become visible / invisible.
virtual void	flipVisibility (bool cascade=true)
	Inverts the visibility of all objects attached to this node.
virtual void	setDebugDisplayEnabled (bool enabled, bool cascade=true)
	Tells all objects attached to this node whether to display their debug information or not.
const String &	getName (void) const
	Returns the name of the node.
virtual Node *	getParent (void) const
	Gets this node's parent (NULL if this is the root).
virtual const Quaternion &	getOrientation () const
	Returns a quaternion representing the nodes orientation.
virtual void	setOrientation (const Quaternion &q)
	Sets the orientation of this node via a quaternion.
virtual void	setOrientation (Real w, Real x, Real y, Real z)
	Sets the orientation of this node via quaternion parameters.
virtual void	resetOrientation (void)
	Resets the nodes orientation (local axes as world axes, no rotation).
virtual void	setPosition (const Vector3 &pos)
	Sets the position of the node relative to it's parent.
virtual void	setPosition (Real x, Real y, Real z)
	Sets the position of the node relative to it's parent.
virtual const Vector3 &	getPosition (void) const
	Gets the position of the node relative to it's parent.
virtual void	setScale (const Vector3 &scale)
	Sets the scaling factor applied to this node.
virtual void	setScale (Real x, Real y, Real z)
	Sets the scaling factor applied to this node.
virtual const Vector3 &	getScale (void) const
	Gets the scaling factor of this node.
virtual void	setInheritOrientation (bool inherit)
	Tells the node whether it should inherit orientation from it's parent node.
virtual bool	getInheritOrientation (void) const
	Returns true if this node is affected by orientation applied to the parent node.
virtual void	setInheritScale (bool inherit)
	Tells the node whether it should inherit scaling factors from it's parent node.
virtual bool	getInheritScale (void) const
	Returns true if this node is affected by scaling factors applied to the parent node.
virtual void	scale (const Vector3 &scale)
	Scales the node, combining it's current scale with the passed in scaling factor.
virtual void	scale (Real x, Real y, Real z)
	Scales the node, combining it's current scale with the passed in scaling factor.
virtual void	translate (const Vector3 &d, TransformSpace relativeTo=TS_PARENT)
	Moves the node along the Cartesian axes.
virtual void	translate (Real x, Real y, Real z, TransformSpace relativeTo=TS_PARENT)
	Moves the node along the Cartesian axes.
virtual void	translate (const Matrix3 &axes, const Vector3 &move, TransformSpace relativeTo=TS_PARENT)
	Moves the node along arbitrary axes.
virtual void	translate (const Matrix3 &axes, Real x, Real y, Real z, TransformSpace relativeTo=TS_PARENT)
	Moves the node along arbitrary axes.
virtual void	roll (const Radian &angle, TransformSpace relativeTo=TS_LOCAL)
	Rotate the node around the Z-axis.
virtual void	pitch (const Radian &angle, TransformSpace relativeTo=TS_LOCAL)
	Rotate the node around the X-axis.
virtual void	rotate (const Vector3 &axis, const Radian &angle, TransformSpace relativeTo=TS_LOCAL)
	Rotate the node around an arbitrary axis.
virtual void	rotate (const Quaternion &q, TransformSpace relativeTo=TS_LOCAL)
	Rotate the node around an aritrary axis using a Quarternion.
virtual Matrix3	getLocalAxes (void) const
	Gets a matrix whose columns are the local axes based on the nodes orientation relative to it's parent.
virtual Node *	createChild (const Vector3 &translate=Vector3::ZERO, const Quaternion &rotate=Quaternion::IDENTITY)
	Creates an unnamed new Node as a child of this node.
virtual Node *	createChild (const String &name, const Vector3 &translate=Vector3::ZERO, const Quaternion &rotate=Quaternion::IDENTITY)
	Creates a new named Node as a child of this node.
virtual void	addChild (Node *child)
	Adds a (precreated) child scene node to this node.
virtual unsigned short	numChildren (void) const
	Reports the number of child nodes under this one.
virtual Node *	getChild (unsigned short index) const
	Gets a pointer to a child node.
virtual Node *	getChild (const String &name) const
	Gets a pointer to a named child node.
virtual ChildNodeIterator	getChildIterator (void)
	Retrieves an iterator for efficiently looping through all children of this node.
virtual ConstChildNodeIterator	getChildIterator (void) const
	Retrieves an iterator for efficiently looping through all children of this node.
virtual Node *	removeChild (unsigned short index)
	Drops the specified child from this node.
virtual Node *	removeChild (Node *child)
	Drops the specified child from this node.
virtual Node *	removeChild (const String &name)
	Drops the named child from this node.
virtual void	removeAllChildren (void)
	Removes all child Nodes attached to this node.
virtual const Quaternion &	_getDerivedOrientation (void) const
	Gets the orientation of the node as derived from all parents.
virtual const Vector3 &	_getDerivedPosition (void) const
	Gets the position of the node as derived from all parents.
virtual const Vector3 &	_getDerivedScale (void) const
	Gets the scaling factor of the node as derived from all parents.
virtual const Matrix4 &	_getFullTransform (void) const
	Gets the full transformation matrix for this node.
virtual void	setListener (Listener *listener)
	Sets a listener for this Node.
virtual Listener *	getListener (void) const
	Gets the current listener for this Node.
const MaterialPtr &	getMaterial (void) const
	Overridden from Renderable.
void	getRenderOperation (RenderOperation &op)
	Overridden from Renderable.
void	getWorldTransforms (Matrix4 *xform) const
	Overridden from Renderable.
virtual void	setInitialState (void)
	Sets the current transform of this node to be the 'initial state' ie that position / orientation / scale to be used as a basis for delta values used in keyframe animation.
virtual void	resetToInitialState (void)
	Resets the position / orientation / scale of this node to it's initial state, see setInitialState for more info.
virtual const Vector3 &	getInitialPosition (void) const
	Gets the initial position of this node, see setInitialState for more info.
virtual const Quaternion &	getInitialOrientation (void) const
	Gets the initial orientation of this node, see setInitialState for more info.
virtual const Vector3 &	getInitialScale (void) const
	Gets the initial position of this node, see setInitialState for more info.
Real	getSquaredViewDepth (const Camera *cam) const
	Overridden, see Renderable.
virtual void	needUpdate (bool forceParentUpdate=false)
	To be called in the event of transform changes to this node that require it's recalculation.
virtual void	requestUpdate (Node *child, bool forceParentUpdate=false)
	Called by children to notify their parent that they need an update.
virtual void	cancelUpdate (Node *child)
	Called by children to notify their parent that they no longer need an update.
const LightList &	getLights (void) const
	Gets a list of lights, ordered relative to how close they are to this renderable. Remarks: Directional lights, which have no position, will always be first on this list.
virtual Technique *	getTechnique (void) const
	Retrieves a pointer to the Material Technique this renderable object uses.
virtual bool	preRender (SceneManager *sm, RenderSystem *rsys)
	Called just prior to the Renderable being rendered.
virtual void	postRender (SceneManager *sm, RenderSystem *rsys)
	Called immediately after the Renderable has been rendered.
virtual unsigned short	getNumWorldTransforms (void) const
	Returns the number of world transform matrices this renderable requires.
void	setUseIdentityProjection (bool useIdentityProjection)
	Sets whether or not to use an 'identity' projection.
bool	getUseIdentityProjection (void) const
	Returns whether or not to use an 'identity' projection.
void	setUseIdentityView (bool useIdentityView)
	Sets whether or not to use an 'identity' view.
bool	getUseIdentityView (void) const
	Returns whether or not to use an 'identity' view.
virtual bool	getCastsShadows (void) const
	Method which reports whether this renderable would normally cast a shadow.
void	setCustomParameter (size_t index, const Vector4 &value)
	Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.
const Vector4 &	getCustomParameter (size_t index) const
	Gets the custom value associated with this Renderable at the given index.
virtual void	_updateCustomGpuParameter (const GpuProgramParameters::AutoConstantEntry &constantEntry, GpuProgramParameters *params) const
	Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows.
virtual void	setPolygonModeOverrideable (bool override)
	Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.
virtual bool	getPolygonModeOverrideable (void) const
	Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.
virtual void	setUserAny (const Any &anything)
	Sets any kind of user value on this object.
virtual const Any &	getUserAny (void) const
	Retrieves the custom user value associated with this object.
virtual RenderSystemData *	getRenderSystemData () const
	Sets render system private data.
virtual void	setRenderSystemData (RenderSystemData *val) const
	gets render system private data
void *	operator new (size_t sz, const char *file, int line, const char *func)
	operator new, with debug line info
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *ptr)
	placement operator new
void *	operator new[] (size_t sz, const char *file, int line, const char *func)
	array operator new, with debug line info
void *	operator new[] (size_t sz)
void	operator delete (void *ptr)
void	operator delete (void *ptr, const char *, int, const char *)
void	operator delete[] (void *ptr)
void	operator delete[] (void *ptr, const char *, int, const char *)
Static Public Member Functions
static void	queueNeedUpdate (Node *n)
	Queue a 'needUpdate' call to a node safely.
static void	processQueuedUpdates (void)
	Process queued 'needUpdate' calls.
Protected Types
typedef std::set < Node * >	ChildUpdateSet
typedef std::vector < Node * >	QueuedUpdates
typedef std::map < size_t, Vector4 >	CustomParameterMap
Protected Member Functions
void	updateFromParentImpl (void) const
	Class-specific implementation of _updateFromParent. Remarks: Splitting the implementation of the update away from the update call itself allows the detail to be overridden without disrupting the general sequence of updateFromParent (e.g. raising events) .
Node *	createChildImpl (void)
	See Node.
Node *	createChildImpl (const String &name)
	See Node.
void	setParent (Node *parent)
	See Node.
virtual void	setInSceneGraph (bool inGraph)
	Internal method for setting whether the node is in the scene graph.
virtual void	_updateFromParent (void) const
	Triggers the node to update it's combined transforms.
Protected Attributes
ObjectMap	mObjectsByName
WireBoundingBox *	mWireBoundingBox
	Pointer to a Wire Bounding Box for this Node.
bool	mShowBoundingBox
	Flag that determines if the bounding box of the node should be displayed.
SceneManager *	mCreator
	SceneManager which created this node.
AxisAlignedBox	mWorldAABB
	World-Axis aligned bounding box, updated only through _update.
bool	mYawFixed
	Whether to yaw around a fixed axis.
Vector3	mYawFixedAxis
	Fixed axis to yaw around.
SceneNode *	mAutoTrackTarget
	Auto tracking target.
Vector3	mAutoTrackOffset
	Tracking offset for fine tuning.
Vector3	mAutoTrackLocalDirection
	Local 'normal' direction vector.
bool	mIsInSceneGraph
	Is this node a current part of the scene graph?
Node *	mParent
	Pointer to parent node.
ChildNodeMap	mChildren
	Collection of pointers to direct children; hashmap for efficiency.
ChildUpdateSet	mChildrenToUpdate
	List of children which need updating, used if self is not out of date but children are.
bool	mNeedParentUpdate
	Flag to indicate own transform from parent is out of date.
bool	mNeedChildUpdate
	Flag indicating that all children need to be updated.
bool	mParentNotified
	Flag indicating that parent has been notified about update request.
bool	mQueuedForUpdate
	Flag indicating that the node has been queued for update.
String	mName
	Friendly name of this node, can be automatically generated if you don't care.
Quaternion	mOrientation
	Stores the orientation of the node relative to it's parent.
Vector3	mPosition
	Stores the position/translation of the node relative to its parent.
Vector3	mScale
	Stores the scaling factor applied to this node.
bool	mInheritOrientation
	Stores whether this node inherits orientation from it's parent.
bool	mInheritScale
	Stores whether this node inherits scale from it's parent.
MaterialPtr	mpMaterial
	Material pointer should this node be rendered.
Quaternion	mDerivedOrientation
	Cached combined orientation.
Vector3	mDerivedPosition
	Cached combined position.
Vector3	mDerivedScale
	Cached combined scale.
Vector3	mInitialPosition
	The position to use as a base for keyframe animation.
Quaternion	mInitialOrientation
	The orientation to use as a base for keyframe animation.
Vector3	mInitialScale
	The scale to use as a base for keyframe animation.
Matrix4	mCachedTransform
	Cached derived transform as a 4x4 matrix.
bool	mCachedTransformOutOfDate
Listener *	mListener
	Node listener - only one allowed (no list) for size & performance reasons.
CustomParameterMap	mCustomParameters
bool	mPolygonModeOverrideable
bool	mUseIdentityProjection
bool	mUseIdentityView
Any	mUserAny
RenderSystemData *	mRenderSystemData
Static Protected Attributes
static unsigned long	msNextGeneratedNameExt
	Incremented count for next name extension.
static QueuedUpdates	msQueuedUpdates

---

Detailed Description

Class representing a node in the scene graph.

Remarks:

A SceneNode is a type of Node which is used to organise objects in a scene. It has the same hierarchical transformation properties of the generic Node class, but also adds the ability to attach world objects to the node, and stores hierarchical bounding volumes of the nodes in the tree. Child nodes are contained within the bounds of the parent, and so on down the tree, allowing for fast culling.

Definition at line 52 of file OgreSceneNode.h.

---

Member Typedef Documentation

typedef HashMap<String, MovableObject*> Ogre::SceneNode::ObjectMap

Definition at line 55 of file OgreSceneNode.h.

typedef MapIterator<ObjectMap> Ogre::SceneNode::ObjectIterator

Definition at line 56 of file OgreSceneNode.h.

typedef ConstMapIterator<ObjectMap> Ogre::SceneNode::ConstObjectIterator

Definition at line 57 of file OgreSceneNode.h.

typedef HashMap<String, Node*> Ogre::Node::ChildNodeMap [inherited]

Definition at line 68 of file OgreNode.h.

typedef MapIterator<ChildNodeMap> Ogre::Node::ChildNodeIterator [inherited]

Definition at line 69 of file OgreNode.h.

typedef ConstMapIterator<ChildNodeMap> Ogre::Node::ConstChildNodeIterator [inherited]

Definition at line 70 of file OgreNode.h.

typedef std::set<Node*> Ogre::Node::ChildUpdateSet [protected, inherited]

Definition at line 101 of file OgreNode.h.

typedef std::vector<Node*> Ogre::Node::QueuedUpdates [protected, inherited]

Definition at line 204 of file OgreNode.h.

typedef std::map<size_t, Vector4> Ogre::Renderable::CustomParameterMap [protected, inherited]

Definition at line 371 of file OgreRenderable.h.

---

Member Enumeration Documentation

enum Ogre::Node::TransformSpace [inherited]

Enumeration denoting the spaces which a transform can be relative to.

Enumerator:

TS_LOCAL	Transform is relative to the local space.
TS_PARENT	Transform is relative to the space of the parent node.
TS_WORLD	Transform is relative to world space.

Definition at line 59 of file OgreNode.h.

---

Constructor & Destructor Documentation

Ogre::SceneNode::SceneNode

(

SceneManager *

creator

)

Constructor, only to be called by the creator SceneManager.

Remarks:

Creates a node with a generated name.

Ogre::SceneNode::SceneNode	(	SceneManager *	creator,
		const String &	name
	)

Constructor, only to be called by the creator SceneManager.

Remarks:

Creates a node with a specified name.

Ogre::SceneNode::~SceneNode

(

)

---

Member Function Documentation

void Ogre::SceneNode::updateFromParentImpl

(

void

)

const [protected, virtual]

Class-specific implementation of _updateFromParent.

Remarks:

Splitting the implementation of the update away from the update call itself allows the detail to be overridden without disrupting the general sequence of updateFromParent (e.g. raising events)

.

Reimplemented from Ogre::Node.

Node* Ogre::SceneNode::createChildImpl

(

void

)

[protected, virtual]

See Node.

Implements Ogre::Node.

Node* Ogre::SceneNode::createChildImpl

(

const String &

name

)

[protected, virtual]

See Node.

Implements Ogre::Node.

void Ogre::SceneNode::setParent

(

Node *

parent

)

[protected, virtual]

See Node.

Reimplemented from Ogre::Node.

virtual void Ogre::SceneNode::setInSceneGraph

(

bool

inGraph

)

[protected, virtual]

Internal method for setting whether the node is in the scene graph.

virtual void Ogre::SceneNode::attachObject

(

MovableObject *

obj

)

[virtual]

Adds an instance of a scene object to this node.

Remarks:

Scene objects can include Entity objects, Camera objects, Light objects, ParticleSystem objects etc. Anything that subclasses from MovableObject.

virtual unsigned short Ogre::SceneNode::numAttachedObjects

(

void

)

const [virtual]

Reports the number of objects attached to this node.

virtual MovableObject* Ogre::SceneNode::getAttachedObject

(

unsigned short

index

)

[virtual]

Retrieves a pointer to an attached object.

Remarks:

Retrieves by index, see alternate version to retrieve by name. The index of an object may change as other objects are added / removed.

virtual MovableObject* Ogre::SceneNode::getAttachedObject

(

const String &

name

)

[virtual]

Retrieves a pointer to an attached object.

Remarks:

Retrieves by object name, see alternate version to retrieve by index.

virtual MovableObject* Ogre::SceneNode::detachObject

(

unsigned short

index

)

[virtual]

Detaches the indexed object from this scene node.

Remarks:

Detaches by index, see the alternate version to detach by name. Object indexes may change as other objects are added / removed.

virtual void Ogre::SceneNode::detachObject

(

MovableObject *

obj

)

[virtual]

Detaches an object by pointer.

virtual MovableObject* Ogre::SceneNode::detachObject

(

const String &

name

)

[virtual]

Detaches the named object from this node and returns a pointer to it.

virtual void Ogre::SceneNode::detachAllObjects

(

void

)

[virtual]

Detaches all objects attached to this node.

virtual bool Ogre::SceneNode::isInSceneGraph

(

void

)

const [virtual]

Determines whether this node is in the scene graph, i.e.

whether it's ultimate ancestor is the root scene node.

Definition at line 157 of file OgreSceneNode.h.

virtual void Ogre::SceneNode::_notifyRootNode

(

void

)

[virtual]

Notifies this SceneNode that it is the root scene node.

Remarks:

Only SceneManager should call this!

Definition at line 163 of file OgreSceneNode.h.

virtual void Ogre::SceneNode::_update	(	bool	updateChildren,
		bool	parentHasChanged
	)			[virtual]

Internal method to update the Node.

Note:

Updates this scene node and any relevant children to incorporate transforms etc. Don't call this yourself unless you are writing a SceneManager implementation.

Parameters:

	updateChildren	If true, the update cascades down to all children. Specify false if you wish to update children separately, e.g. because of a more selective SceneManager implementation.
	parentHasChanged	This flag indicates that the parent xform has changed, so the child should retrieve the parent's xform and combine it with its own even if it hasn't changed itself.

Reimplemented from Ogre::Node.

virtual void Ogre::SceneNode::_updateBounds

(

void

)

[virtual]

Tells the SceneNode to update the world bound info it stores.