LOD - Level Of Detail group node which allows switching between children depending on distance from eye point. More...

Inheritance diagram for osg::LOD:

Public Types
enum	CenterMode { USE_BOUNDING_SPHERE_CENTER, USER_DEFINED_CENTER, UNION_OF_BOUNDING_SPHERE_AND_USER_DEFINED }
	Modes which control how the center of object should be determined when computing which child is active. More...

enum	RangeMode { DISTANCE_FROM_EYE_POINT, PIXEL_SIZE_ON_SCREEN }
	Modes that control how the range values should be interpreted when computing which child is active. More...

typedef osg::BoundingSphere::vec_type	vec_type

typedef osg::BoundingSphere::value_type	value_type

typedef std::pair< float, float >	MinMaxPair

typedef std::vector< MinMaxPair >	RangeList

Public Types inherited from osg::Node
typedef std::vector< Group * >	ParentList
	A vector of osg::Group pointers which is used to store the parent(s) of node. More...

typedef unsigned int	NodeMask
	This is a set of bits (flags) that represent the Node. More...

typedef std::vector< std::string >	DescriptionList
	A vector of std::string's which are used to describe the object. More...

Public Types inherited from osg::Object
enum	DataVariance { DYNAMIC, STATIC, UNSPECIFIED }

Public Member Functions
	LOD ()
	Default constructor The default constructor sets. More...

	LOD (const LOD &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy. More...

	META_Node (osg, LOD)

virtual void	traverse (NodeVisitor &nv)
	Traverse downwards : calls children's accept method with NodeVisitor. More...

virtual bool	addChild (Node *child)
	Add Node to Group. More...

virtual bool	addChild (Node *child, float rmin, float rmax)

template<class T >
bool	addChild (const ref_ptr< T > &child, float rmin, float rmax)

virtual bool	removeChildren (unsigned int pos, unsigned int numChildrenToRemove=1)
	Remove children from Group. More...

void	setCenterMode (CenterMode mode)
	Set how the center of object should be determined when computing which child is active. More...

CenterMode	getCenterMode () const
	Get how the center of object should be determined when computing which child is active. More...

void	setCenter (const vec_type &center)
	Sets the object-space point which defines the center of the osg::LOD. More...

const vec_type &	getCenter () const
	return the LOD center point. More...

void	setRadius (value_type radius)
	Set the object-space reference radius of the volume enclosed by the LOD. More...

value_type	getRadius () const
	Get the object-space radius of the volume enclosed by the LOD. More...

void	setRangeMode (RangeMode mode)
	Set how the range values should be interpreted when computing which child is active. More...

RangeMode	getRangeMode () const
	Get how the range values should be interpreted when computing which child is active. More...

void	setRange (unsigned int childNo, float min, float max)
	Sets the min and max visible ranges of range of specific child. More...

float	getMinRange (unsigned int childNo) const
	returns the min visible range for specified child. More...

float	getMaxRange (unsigned int childNo) const
	returns the max visible range for specified child. More...

unsigned int	getNumRanges () const
	returns the number of ranges currently set. More...

void	setRangeList (const RangeList &rangeList)
	set the list of MinMax ranges for each child. More...

const RangeList &	getRangeList () const
	return the list of MinMax ranges for each child. More...

virtual BoundingSphere	computeBound () const
	Compute the bounding sphere around Node's geometry or children. More...

Public Member Functions inherited from osg::Group
	Group ()

	Group (const Group &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy. More...

	META_Node (osg, Group)

virtual Group *	asGroup ()
	convert 'this' into a Group pointer if Node is a Group, otherwise return 0. More...

virtual const Group *	asGroup () const
	convert 'const this' into a const Group pointer if Node is a Group, otherwise return 0. More...

template<class T >
bool	addChild (const ref_ptr< T > &child)

virtual bool	insertChild (unsigned int index, Node *child)
	Insert Node to Group at specific location. More...

template<class T >
bool	insertChild (unsigned int index, const ref_ptr< T > &child)

virtual bool	removeChild (Node *child)
	Remove Node from Group. More...

template<class T >
bool	removeChild (const ref_ptr< T > &child)

bool	removeChild (unsigned int pos, unsigned int numChildrenToRemove=1)
	Remove Node from Group. More...

virtual bool	replaceChild (Node origChild, Node newChild)
	Replace specified child Node with another Node. More...

template<class T , class R >
bool	replaceChild (const ref_ptr< T > &origChild, const ref_ptr< R > &newChild)

virtual unsigned int	getNumChildren () const
	Return the number of children nodes. More...

virtual bool	setChild (unsigned int i, Node *node)
	Set child node at position i. More...

Node *	getChild (unsigned int i)
	Return child node at position i. More...

const Node *	getChild (unsigned int i) const
	Return child node at position i. More...

bool	containsNode (const Node *node) const
	Return true if node is contained within Group. More...

template<class T >
bool	containsNode (const ref_ptr< T > &node) const

unsigned int	getChildIndex (const Node *node) const
	Get the index number of child, return a value between 0 and _children.size()-1 if found, if not found then return _children.size(). More...

virtual void	setThreadSafeRefUnref (bool threadSafe)
	Set whether to use a mutex to ensure ref() and unref() are thread safe. More...

virtual void	resizeGLObjectBuffers (unsigned int maxSize)
	Resize any per context GLObject buffers to specified size. More...

virtual void	releaseGLObjects (osg::State *=0) const
	If State is non-zero, this function releases any associated OpenGL objects for the specified graphics context. More...

Public Member Functions inherited from osg::Node
	Node ()
	Construct a node. More...

	Node (const Node &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy. More...

virtual Object *	cloneType () const
	clone an object of the same type as the node. More...

virtual Object *	clone (const CopyOp &copyop) const
	return a clone of a node, with Object* return type. More...

virtual bool	isSameKindAs (const Object *obj) const
	return true if this and obj are of the same kind of object. More...

virtual const char *	libraryName () const
	return the name of the node's library. More...

virtual const char *	className () const
	return the name of the node's class type. More...

virtual Node *	asNode ()
	Convert 'this' into a Node pointer if Object is a Node, otherwise return 0. More...

virtual const Node *	asNode () const
	convert 'const this' into a const Node pointer if Object is a Node, otherwise return 0. More...

virtual Drawable *	asDrawable ()
	convert 'this' into a Drawable pointer if Node is a Drawable, otherwise return 0. More...

virtual const Drawable *	asDrawable () const
	convert 'const this' into a const Drawable pointer if Node is a Drawable, otherwise return 0. More...

virtual Geometry *	asGeometry ()
	convert 'this' into a Geometry pointer if Node is a Geometry, otherwise return 0. More...

virtual const Geometry *	asGeometry () const
	convert 'const this' into a const Geometry pointer if Node is a Geometry, otherwise return 0. More...

virtual Transform *	asTransform ()
	Convert 'this' into a Transform pointer if Node is a Transform, otherwise return 0. More...

virtual const Transform *	asTransform () const
	convert 'const this' into a const Transform pointer if Node is a Transform, otherwise return 0. More...

virtual OccluderNode *	asOccluderNode ()
	Convert 'this' into an OccluderNode pointer if Node is an OccluderNode, otherwise return 0. More...

virtual const OccluderNode *	asOccluderNode () const
	Convert 'const this' into a const OccluderNode pointer if Node is an OccluderNode, otherwise return 0. More...

virtual Switch *	asSwitch ()
	Convert 'this' into a Switch pointer if Node is a Switch, otherwise return 0. More...

virtual const Switch *	asSwitch () const
	convert 'const this' into a const Switch pointer if Node is a Switch, otherwise return 0. More...

virtual Geode *	asGeode ()
	Convert 'this' into a Geode pointer if Node is a Geode, otherwise return 0. More...

virtual const Geode *	asGeode () const
	convert 'const this' into a const Geode pointer if Node is a Geode, otherwise return 0. More...

virtual osgTerrain::Terrain *	asTerrain ()
	Convert 'this' into a Transform pointer if Node is a Terrain, otherwise return 0. More...

virtual const osgTerrain::Terrain *	asTerrain () const
	convert 'const this' into a const Terrain pointer if Node is a Terrain, otherwise return 0. More...

virtual void	accept (NodeVisitor &nv)
	Visitor Pattern : calls the apply method of a NodeVisitor with this node's type. More...

virtual void	ascend (NodeVisitor &nv)
	Traverse upwards : calls parents' accept method with NodeVisitor. More...

const ParentList &	getParents () const
	Get the parent list of node. More...

ParentList	getParents ()
	Get the a copy of parent list of node. More...

Group *	getParent (unsigned int i)

const Group *	getParent (unsigned int i) const
	Get a single const parent of node. More...

unsigned int	getNumParents () const
	Get the number of parents of node. More...

NodePathList	getParentalNodePaths (osg::Node *haltTraversalAtNode=0) const
	Get the list of node paths parent paths. More...

MatrixList	getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const
	Get the list of matrices that transform this node from local coordinates to world coordinates. More...

void	setUpdateCallback (Callback *nc)
	Set update node callback, called during update traversal. More...

template<class T >
void	setUpdateCallback (const ref_ptr< T > &nc)

Callback *	getUpdateCallback ()
	Get update node callback, called during update traversal. More...

const Callback *	getUpdateCallback () const
	Get const update node callback, called during update traversal. More...

void	addUpdateCallback (Callback *nc)
	Convenience method that sets the update callback of the node if it doesn't exist, or nest it into the existing one. More...

template<class T >
void	addUpdateCallback (const ref_ptr< T > &nc)

void	removeUpdateCallback (Callback *nc)
	Convenience method that removes a given callback from a node, even if that callback is nested. More...

template<class T >
void	removeUpdateCallback (const ref_ptr< T > &nc)

unsigned int	getNumChildrenRequiringUpdateTraversal () const
	Get the number of Children of this node which require Update traversal, since they have an Update Callback attached to them or their children. More...

void	setEventCallback (Callback *nc)
	Set event node callback, called during event traversal. More...

template<class T >
void	setEventCallback (const ref_ptr< T > &nc)

Callback *	getEventCallback ()
	Get event node callback, called during event traversal. More...

const Callback *	getEventCallback () const
	Get const event node callback, called during event traversal. More...

void	addEventCallback (Callback *nc)
	Convenience method that sets the event callback of the node if it doesn't exist, or nest it into the existing one. More...

template<class T >
void	addEventCallback (const ref_ptr< T > &nc)

void	removeEventCallback (Callback *nc)
	Convenience method that removes a given callback from a node, even if that callback is nested. More...

template<class T >
void	removeEventCallback (const ref_ptr< T > &nc)

unsigned int	getNumChildrenRequiringEventTraversal () const
	Get the number of Children of this node which require Event traversal, since they have an Event Callback attached to them or their children. More...

void	setCullCallback (Callback *nc)
	Set cull node callback, called during cull traversal. More...

template<class T >
void	setCullCallback (const ref_ptr< T > &nc)

Callback *	getCullCallback ()
	Get cull node callback, called during cull traversal. More...

const Callback *	getCullCallback () const
	Get const cull node callback, called during cull traversal. More...

void	addCullCallback (Callback *nc)
	Convenience method that sets the cull callback of the node if it doesn't exist, or nest it into the existing one. More...

template<class T >
void	addCullCallback (const ref_ptr< T > &nc)

void	removeCullCallback (Callback *nc)
	Convenience method that removes a given callback from a node, even if that callback is nested. More...

template<class T >
void	removeCullCallback (const ref_ptr< T > &nc)

void	setCullingActive (bool active)
	Set the view frustum/small feature culling of this node to be active or inactive. More...

bool	getCullingActive () const
	Get the view frustum/small feature _cullingActive flag for this node. More...

unsigned int	getNumChildrenWithCullingDisabled () const
	Get the number of Children of this node which have culling disabled. More...

bool	isCullingActive () const
	Return true if this node can be culled by view frustum, occlusion or small feature culling during the cull traversal. More...

unsigned int	getNumChildrenWithOccluderNodes () const
	Get the number of Children of this node which are or have OccluderNode's. More...

bool	containsOccluderNodes () const
	return true if this node is an OccluderNode or the subgraph below this node are OccluderNodes. More...

void	setNodeMask (NodeMask nm)
	Set the node mask. More...

NodeMask	getNodeMask () const
	Get the node Mask. More...

void	setStateSet (osg::StateSet *stateset)
	Set the node's StateSet. More...

template<class T >
void	setStateSet (const osg::ref_ptr< T > &stateset)

osg::StateSet *	getOrCreateStateSet ()
	return the node's StateSet, if one does not already exist create it set the node and return the newly created StateSet. More...

osg::StateSet *	getStateSet ()
	Return the node's StateSet. More...

const osg::StateSet *	getStateSet () const
	Return the node's const StateSet. More...

void	setDescriptions (const DescriptionList &descriptions)
	Set the list of string descriptions. More...

DescriptionList &	getDescriptions ()
	Get the description list of the node. More...

const DescriptionList &	getDescriptions () const
	Get the const description list of the const node. More...

const std::string &	getDescription (unsigned int i) const
	Get a single const description of the const node. More...

std::string &	getDescription (unsigned int i)
	Get a single description of the node. More...

unsigned int	getNumDescriptions () const
	Get the number of descriptions of the node. More...

void	addDescription (const std::string &desc)
	Add a description string to the node. More...

void	setInitialBound (const osg::BoundingSphere &bsphere)
	Set the initial bounding volume to use when computing the overall bounding volume. More...

const BoundingSphere &	getInitialBound () const
	Set the initial bounding volume to use when computing the overall bounding volume. More...

void	dirtyBound ()
	Mark this node's bounding sphere dirty. More...

const BoundingSphere &	getBound () const

void	setComputeBoundingSphereCallback (ComputeBoundingSphereCallback *callback)
	Set the compute bound callback to override the default computeBound. More...

template<class T >
void	setComputeBoundingSphereCallback (const ref_ptr< T > &callback)

ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback ()
	Get the compute bound callback. More...

const ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback () const
	Get the const compute bound callback. More...

Public Member Functions inherited from osg::Object
	Object ()
	Construct an object. More...

	Object (bool threadSafeRefUnref)

	Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor, optional CopyOp object can be used to control shallow vs deep copying of dynamic data. More...

std::string	getCompoundClassName () const
	return the compound class name that combines the library name and class name. More...

virtual NodeVisitor *	asNodeVisitor ()
	Convert 'this' into a NodeVisitor pointer if Object is a NodeVisitor, otherwise return 0. More...

virtual const NodeVisitor *	asNodeVisitor () const
	convert 'const this' into a const NodeVisitor pointer if Object is a NodeVisitor, otherwise return 0. More...

virtual StateSet *	asStateSet ()
	Convert 'this' into a StateSet pointer if Object is a StateSet, otherwise return 0. More...

virtual const StateSet *	asStateSet () const
	convert 'const this' into a const StateSet pointer if Object is a StateSet, otherwise return 0. More...

virtual StateAttribute *	asStateAttribute ()
	Convert 'this' into a StateAttribute pointer if Object is a StateAttribute, otherwise return 0. More...

virtual const StateAttribute *	asStateAttribute () const
	convert 'const this' into a const StateAttribute pointer if Object is a StateAttribute, otherwise return 0. More...

virtual Uniform *	asUniform ()
	Convert 'this' into a Uniform pointer if Object is a Uniform, otherwise return 0. More...

virtual const UniformBase *	asUniformBase () const
	convert 'const this' into a const Uniform pointer if Object is a Uniform, otherwise return 0. More...

virtual UniformBase *	asUniformBase ()
	Convert 'this' into a Uniform pointer if Object is a Uniform, otherwise return 0. More...

virtual const Uniform *	asUniform () const
	convert 'const this' into a const Uniform pointer if Object is a Uniform, otherwise return 0. More...

virtual Camera *	asCamera ()
	Convert 'this' into a Camera pointer if Node is a Camera, otherwise return 0. More...

virtual const Camera *	asCamera () const
	convert 'const this' into a const Camera pointer if Node is a Camera, otherwise return 0. More...

virtual Callback *	asCallback ()
	Convert 'this' into a Callback pointer if Object is a Callback, otherwise return 0. More...

virtual const Callback *	asCallback () const
	convert 'const this' into a const Callback pointer if Object is a Callback, otherwise return 0. More...

virtual CallbackObject *	asCallbackObject ()
	Convert 'this' into a CallbackObject pointer if Object is a CallbackObject, otherwise return 0. More...

virtual const CallbackObject *	asCallbackObject () const
	convert 'const this' into a const CallbackObject pointer if Object is a CallbackObject, otherwise return 0. More...

virtual UserDataContainer *	asUserDataContainer ()
	Convert 'this' into a UserDataContainer pointer if Object is a UserDataContainer, otherwise return 0. More...

virtual const UserDataContainer *	asUserDataContainer () const
	convert 'const this' into a const UserDataContainer pointer if Object is a UserDataContainer, otherwise return 0. More...

virtual ValueObject *	asValueObject ()
	Convert 'this' into a ValueObject pointer if Object is a ValueObject, otherwise return 0. More...

virtual const ValueObject *	asValueObject () const
	Convert 'this' into a ValueObject pointer if Object is a ValueObject, otherwise return 0. More...

virtual Image *	asImage ()
	Convert 'this' into a Image pointer if Object is a Image, otherwise return 0. More...

virtual const Image *	asImage () const
	Convert 'this' into a Image pointer if Object is a Image, otherwise return 0. More...

virtual void	setName (const std::string &name)
	Set the name of object using C++ style string. More...

void	setName (const char *name)
	Set the name of object using a C style string. More...

const std::string &	getName () const
	Get the name of object. More...

void	setDataVariance (DataVariance dv)
	Set the data variance of this object. More...

DataVariance	getDataVariance () const
	Get the data variance of this object. More...

virtual void	computeDataVariance ()
	Compute the DataVariance based on an assessment of callback etc. More...

void	setUserDataContainer (osg::UserDataContainer *udc)
	set the UserDataContainer object. More...

template<class T >
void	setUserDataContainer (const ref_ptr< T > &udc)

osg::UserDataContainer *	getUserDataContainer ()
	get the UserDataContainer attached to this object. More...

const osg::UserDataContainer *	getUserDataContainer () const
	get the const UserDataContainer attached to this object. More...

osg::UserDataContainer *	getOrCreateUserDataContainer ()
	Convenience method that returns the UserDataContainer, and if one doesn't already exist creates and assigns a DefaultUserDataContainer to the Object and then return this new UserDataContainer. More...

virtual void	setUserData (Referenced *obj)
	Set user data, data must be subclassed from Referenced to allow automatic memory handling. More...

template<class T >
void	setUserData (const ref_ptr< T > &ud)

virtual Referenced *	getUserData ()
	Get user data. More...

virtual const Referenced *	getUserData () const
	Get const user data. More...

template<typename T >
bool	getUserValue (const std::string &name, T &value) const
	Convenience method that casts the named UserObject to osg::TemplateValueObject<T> and gets the value. More...

template<typename T >
void	setUserValue (const std::string &name, const T &value)
	Convenience method that creates the osg::TemplateValueObject<T> to store the specified value and adds it as a named UserObject. More...

template<typename T >
BoolValueObject UCharValueObject UShortValueObject UIntValueObject DoubleValueObject Vec3fValueObject Vec2dValueObject Vec4dValueObject PlaneValueObject MatrixdValueObject BoundingBoxdValueObject BoundingSpheredValueObject bool	getUserValue (const std::string &name, T &value) const
	provide implementation of osg::Object::getUserValue(..) template More...

Public Member Functions inherited from osg::Referenced
	Referenced ()

	Referenced (bool threadSafeRefUnref)
	Deprecated, Referenced is now always uses thread safe ref/unref, use default Referenced() constructor instead. More...

	Referenced (const Referenced &)

Referenced &	operator= (const Referenced &)

bool	getThreadSafeRefUnref () const
	Get whether a mutex is used to ensure ref() and unref() are thread safe. More...

OpenThreads::Mutex *	getRefMutex () const
	Get the mutex used to ensure thread safety of ref()/unref(). More...

int	ref () const
	Increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

int	unref () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...

int	unref_nodelete () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...

int	referenceCount () const
	Return the number of pointers currently referencing this object. More...

ObserverSet *	getObserverSet () const
	Get the ObserverSet if one is attached, otherwise return NULL. More...

ObserverSet *	getOrCreateObserverSet () const
	Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet. More...

void	addObserver (Observer *observer) const
	Add a Observer that is observing this object, notify the Observer when this object gets deleted. More...

void	removeObserver (Observer *observer) const
	Remove Observer that is observing this object. More...

Protected Member Functions
virtual	~LOD ()

Protected Member Functions inherited from osg::Group
virtual	~Group ()

virtual void	childRemoved (unsigned int, unsigned int)

virtual void	childInserted (unsigned int)

Protected Member Functions inherited from osg::Node
virtual	~Node ()
	Node destructor. More...

void	addParent (osg::Group *parent)

void	removeParent (osg::Group *parent)

void	setNumChildrenRequiringUpdateTraversal (unsigned int num)

void	setNumChildrenRequiringEventTraversal (unsigned int num)

void	setNumChildrenWithCullingDisabled (unsigned int num)

void	setNumChildrenWithOccluderNodes (unsigned int num)

Protected Member Functions inherited from osg::Object
virtual	~Object ()
	Object destructor. More...

Protected Member Functions inherited from osg::Referenced
virtual	~Referenced ()

void	signalObserversAndDelete (bool signalDelete, bool doDelete) const

void	deleteUsingDeleteHandler () const

Protected Attributes
CenterMode	_centerMode

vec_type	_userDefinedCenter

value_type	_radius

RangeMode	_rangeMode

RangeList	_rangeList

Protected Attributes inherited from osg::Group
NodeList	_children

Protected Attributes inherited from osg::Node
BoundingSphere	_initialBound

ref_ptr< ComputeBoundingSphereCallback >	_computeBoundCallback

BoundingSphere	_boundingSphere

bool	_boundingSphereComputed

ParentList	_parents

ref_ptr< Callback >	_updateCallback

unsigned int	_numChildrenRequiringUpdateTraversal

ref_ptr< Callback >	_eventCallback

unsigned int	_numChildrenRequiringEventTraversal

ref_ptr< Callback >	_cullCallback

bool	_cullingActive

unsigned int	_numChildrenWithCullingDisabled

unsigned int	_numChildrenWithOccluderNodes

NodeMask	_nodeMask

ref_ptr< StateSet >	_stateset

Protected Attributes inherited from osg::Object
std::string	_name

DataVariance	_dataVariance

osg::UserDataContainer *	_userDataContainer

Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr	_observerSet

OpenThreads::Atomic	_refCount

Additional Inherited Members
Static Public Member Functions inherited from osg::Referenced
static OpenThreads::Mutex *	getGlobalReferencedMutex ()
	Get the optional global Referenced mutex, this can be shared between all osg::Referenced. More...

static void	setDeleteHandler (DeleteHandler *handler)
	Set a DeleteHandler to which deletion of all referenced counted objects will be delegated. More...

static DeleteHandler *	getDeleteHandler ()
	Get a DeleteHandler. More...

Detailed Description

LOD - Level Of Detail group node which allows switching between children depending on distance from eye point.

Typical uses are for load balancing - objects further away from the eye point are rendered at a lower level of detail, and at times of high stress on the graphics pipeline lower levels of detail can also be chosen by adjusting the viewers's Camera/CullSettings LODScale value. Each child has a corresponding valid range consisting of a minimum and maximum distance. Given a distance to the viewer (d), LOD displays a child if min <= d < max. LOD may display multiple children simultaneously if their corresponding ranges overlap. Children can be in any order, and don't need to be sorted by range or amount of detail. If the number of ranges (m) is less than the number of children (n), then children m+1 through n are ignored.

Member Typedef Documentation

◆ MinMaxPair

typedef std::pair<float,float> osg::LOD::MinMaxPair

◆ RangeList

typedef std::vector<MinMaxPair> osg::LOD::RangeList

◆ value_type

typedef osg::BoundingSphere::value_type osg::LOD::value_type

◆ vec_type

typedef osg::BoundingSphere::vec_type osg::LOD::vec_type

Member Enumeration Documentation

◆ CenterMode

enum osg::LOD::CenterMode

Modes which control how the center of object should be determined when computing which child is active.

Furthermore it determines how the bounding sphere is calculated.

Enumerator
USE_BOUNDING_SPHERE_CENTER	Uses the bounding sphere's center as the center of object and the geometrical bounding sphere of the node's children.
USER_DEFINED_CENTER	Uses the user defined center as the center of object; the bounding sphere is determined by the user defined center and user defined radius.
UNION_OF_BOUNDING_SPHERE_AND_USER_DEFINED	Uses the user defined center as the center of object; the bounding sphere is the user defined bounding sphere expanded by the geometrical bounding sphere of the node's children.

◆ RangeMode

enum osg::LOD::RangeMode

Modes that control how the range values should be interpreted when computing which child is active.

Enumerator
DISTANCE_FROM_EYE_POINT
PIXEL_SIZE_ON_SCREEN

Constructor & Destructor Documentation

◆ LOD() [1/2]

osg::LOD::LOD ( )

Default constructor The default constructor sets.

the center mode to USE_BOUNDING_SPHERE,
the radius to a value smaller than zero and
the range mode to DISTANCE_FROM_EYE_POINT.

◆ LOD() [2/2]

osg::LOD::LOD	(	const LOD &	,
		const CopyOp &	copyop = `CopyOp::SHALLOW_COPY`
	)

Copy constructor using CopyOp to manage deep vs shallow copy.

◆ ~LOD()

virtual osg::LOD::~LOD ( )

inlineprotectedvirtual

Member Function Documentation

◆ addChild() [1/3]

virtual bool osg::LOD::addChild ( Node * child )

virtual

Add Node to Group.

If node is not NULL then increment its reference count, add it to the child list and dirty the bounding sphere to force it to recompute on next getBound() and return true for success. Otherwise return false. Scene nodes can't be added as child nodes.

Reimplemented from osg::Group.

Reimplemented in osg::PagedLOD.

◆ addChild() [2/3]

virtual bool osg::LOD::addChild	(	Node *	child,
		float	rmin,
		float	rmax
	)

virtual

Reimplemented in osg::PagedLOD.

◆ addChild() [3/3]

template<class T >

bool osg::LOD::addChild	(	const ref_ptr< T > &	child,
		float	rmin,
		float	rmax
	)

inline

References addChild(), and osg::ref_ptr< T >::get().

Referenced by addChild().

◆ computeBound()

virtual BoundingSphere osg::LOD::computeBound ( ) const

virtual

Compute the bounding sphere around Node's geometry or children.

This method is automatically called by getBound() when the bounding sphere has been marked dirty via dirtyBound().

Reimplemented from osg::Group.

Reimplemented in osgSim::Impostor.

◆ getCenter()

const vec_type& osg::LOD::getCenter ( ) const

inline

return the LOD center point.

◆ getCenterMode()

CenterMode osg::LOD::getCenterMode ( ) const

inline

Get how the center of object should be determined when computing which child is active.

◆ getMaxRange()

float osg::LOD::getMaxRange ( unsigned int childNo ) const

inline

returns the max visible range for specified child.

◆ getMinRange()

float osg::LOD::getMinRange ( unsigned int childNo ) const

inline

returns the min visible range for specified child.

◆ getNumRanges()

unsigned int osg::LOD::getNumRanges ( ) const

inline

returns the number of ranges currently set.

An LOD which has been fully set up will have getNumChildren()==getNumRanges().

◆ getRadius()

value_type osg::LOD::getRadius ( ) const

inline

Get the object-space radius of the volume enclosed by the LOD.

◆ getRangeList()

const RangeList& osg::LOD::getRangeList ( ) const

inline

return the list of MinMax ranges for each child.

◆ getRangeMode()

RangeMode osg::LOD::getRangeMode ( ) const

inline

Get how the range values should be interpreted when computing which child is active.

◆ META_Node()

osg::LOD::META_Node	(	osg	,
		LOD
	)

◆ removeChildren()

virtual bool osg::LOD::removeChildren	(	unsigned int	pos,
		unsigned int	numChildrenToRemove = `1`
	)

virtual

Remove children from Group.

Note, must be override by subclasses of Group which add per child attributes.

Reimplemented from osg::Group.

Reimplemented in osg::PagedLOD.

◆ setCenter()

void osg::LOD::setCenter ( const vec_type & center )

inline

Sets the object-space point which defines the center of the osg::LOD.

center is affected by any transforms in the hierarchy above the osg::LOD.

Note: This method also changes the center mode to USER_DEFINED_CENTER if the current center mode does not use a user defined center!

See also: setRadius

◆ setCenterMode()

void osg::LOD::setCenterMode ( CenterMode mode )

inline

Set how the center of object should be determined when computing which child is active.

◆ setRadius()

void osg::LOD::setRadius ( value_type radius )

inline

Set the object-space reference radius of the volume enclosed by the LOD.

Parameters

radius Radius must be larger or equal to zero. If the radius is smaller than zero the geometrical bounding sphere of the node's children is used as the LOD's bounding sphere regardless of the center mode setting.

Remarks: The radius is only used to calculate the bounding sphere.

See also: setCenter

◆ setRange()

void osg::LOD::setRange	(	unsigned int	childNo,
		float	min,
		float	max
	)

Sets the min and max visible ranges of range of specific child.

Values are floating point distance specified in local objects coordinates.

◆ setRangeList()

void osg::LOD::setRangeList ( const RangeList & rangeList )

inline

set the list of MinMax ranges for each child.

◆ setRangeMode()

void osg::LOD::setRangeMode ( RangeMode mode )

inline

Set how the range values should be interpreted when computing which child is active.

◆ traverse()

virtual void osg::LOD::traverse ( NodeVisitor & )

virtual

Traverse downwards : calls children's accept method with NodeVisitor.

Reimplemented from osg::Group.

Reimplemented in osgSim::Impostor, and osg::PagedLOD.

Member Data Documentation

◆ _centerMode

CenterMode osg::LOD::_centerMode

protected

◆ _radius

value_type osg::LOD::_radius

protected

◆ _rangeList

RangeList osg::LOD::_rangeList

protected

◆ _rangeMode

RangeMode osg::LOD::_rangeMode

protected

◆ _userDefinedCenter

vec_type osg::LOD::_userDefinedCenter

protected

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

osg/LOD

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ MinMaxPair

◆ RangeList

◆ value_type

◆ vec_type

Member Enumeration Documentation

◆ CenterMode

◆ RangeMode

Constructor & Destructor Documentation

◆ LOD() [1/2]

◆ LOD() [2/2]

◆ ~LOD()

Member Function Documentation

◆ addChild() [1/3]

◆ addChild() [2/3]

◆ addChild() [3/3]

◆ computeBound()

◆ getCenter()

◆ getCenterMode()

◆ getMaxRange()

◆ getMinRange()

◆ getNumRanges()

◆ getRadius()

◆ getRangeList()

◆ getRangeMode()

◆ META_Node()

◆ removeChildren()

◆ setCenter()

◆ setCenterMode()

◆ setRadius()

◆ setRange()

◆ setRangeList()

◆ setRangeMode()

◆ traverse()

Member Data Documentation

◆ _centerMode

◆ _radius

◆ _rangeList

◆ _rangeMode

◆ _userDefinedCenter