#include <LOD.h>

Inheritance diagram for vsg::LOD:

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Collaboration diagram for vsg::LOD:

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Classes
struct	Child

Public Types
using	Children = std::vector< Child, allocator_affinity_nodes< Child > >

Public Member Functions
void	traverse (Visitor &visitor) override

void	traverse (ConstVisitor &visitor) const override

void	traverse (RecordTraversal &visitor) const override

int	compare (const Object &rhs) const override
	compare two objects, return -1 if this object is less than rhs, return 0 if it's equal, return 1 if rhs is greater,

void	read (Input &input) override

void	write (Output &output) const override

void	addChild (const Child &lodChild)

Public Member Functions inherited from vsg::Inherit< Node, LOD >
	Inherit (Args &&... args)

std::size_t	sizeofObject () const noexcept override

const char *	className () const noexcept override

const std::type_info &	type_info () const noexcept override

bool	is_compatible (const std::type_info &type) const noexcept override

int	compare (const Object &rhs) const override

void	accept (Visitor &visitor) override

void	accept (ConstVisitor &visitor) const override

void	accept (RecordTraversal &visitor) const override

Public Member Functions inherited from vsg::Inherit< Object, Node >
	Inherit (Args &&... args)

std::size_t	sizeofObject () const noexcept override

const char *	className () const noexcept override

const std::type_info &	type_info () const noexcept override

bool	is_compatible (const std::type_info &type) const noexcept override

int	compare (const Object &rhs) const override

void	accept (Visitor &visitor) override

void	accept (ConstVisitor &visitor) const override

void	accept (RecordTraversal &visitor) const override

Public Member Functions inherited from vsg::Object
	Object (const Object &)

Object &	operator= (const Object &)

template<class T >
T *	cast ()

template<class T >
const T *	cast () const

void	ref () const noexcept

void	unref () const noexcept

void	unref_nodelete () const noexcept

unsigned int	referenceCount () const noexcept

template<typename T >
void	setValue (const std::string &key, const T &value)

void	setValue (const std::string &key, const char *value)
	specialization of setValue to handle passing C strings

template<typename T >
bool	getValue (const std::string &key, T &value) const
	get specified value type, return false if value associated with key is not assigned or is not the correct type

void	setObject (const std::string &key, ref_ptr< Object > object)
	assign an Object associated with key

Object *	getObject (const std::string &key)
	get Object pointer associated with key, return nullptr if no object associated with key has been assigned

const Object *	getObject (const std::string &key) const
	get const Object pointer associated with key, return nullptr if no object associated with key has been assigned

template<class T >
T *	getObject (const std::string &key)
	get object pointer of specified type associated with key, return nullptr if no object associated with key has been assigned

template<class T >
const T *	getObject (const std::string &key) const
	get const object pointer of specified type associated with key, return nullptr if no object associated with key has been assigned

ref_ptr< Object >	getRefObject (const std::string &key)
	get ref_ptr<Object> associated with key, return nullptr if no object associated with key has been assigned

ref_ptr< const Object >	getRefObject (const std::string &key) const
	get ref_ptr<const Object> pointer associated with key, return nullptr if no object associated with key has been assigned

template<class T >
ref_ptr< T >	getRefObject (const std::string &key)
	get ref_ptr<T> of specified type associated with key, return nullptr if no object associated with key has been assigned

template<class T >
const ref_ptr< const T >	getRefObject (const std::string &key) const
	get ref_ptr<const T> of specified type associated with key, return nullptr if no object associated with key has been assigned

void	removeObject (const std::string &key)
	remove meta object or value associated with key

Auxiliary *	getOrCreateAuxiliary ()

Auxiliary *	getAuxiliary ()

const Auxiliary *	getAuxiliary () const

Static Public Member Functions
template<class N , class V >
static void	t_traverse (N &node, V &visitor)

Static Public Member Functions inherited from vsg::Inherit< Node, LOD >
static ref_ptr< LOD >	create (Args &&... args)

static ref_ptr< LOD >	create_if (bool flag, Args &&... args)

Static Public Member Functions inherited from vsg::Node
static void *	operator new (std::size_t count)
	provide new and delete to enable custom memory management via the vsg::Allocator singleton, using the MEMORY_NODES_OBJECTS

static void	operator delete (void *ptr)

Static Public Member Functions inherited from vsg::Inherit< Object, Node >
static ref_ptr< Node >	create (Args &&... args)

static ref_ptr< Node >	create_if (bool flag, Args &&... args)

Static Public Member Functions inherited from vsg::Object
static ref_ptr< Object >	create ()

static ref_ptr< Object >	create_if (bool flag)

static void *	operator new (std::size_t count)
	provide new and delete to enable custom memory management via the vsg::Allocator singleton, using the MEMORY_AFFINTY_OBJECTS

static void	operator delete (void *ptr)

Public Attributes
dsphere	bound

Children	children

Additional Inherited Members
Protected Member Functions inherited from vsg::Object
virtual void	_attemptDelete () const

void	setAuxiliary (Auxiliary *auxiliary)

Detailed Description

Level of Detail Node, Children should be ordered with the highest resolution child first, through to lowest resolution LOD child last. The Child struct stores the minimumScreenHeightRatio and child that it's associated with. During culling the minimumScreenHeightRatio is used as a minimum ratio of screen height that a bounding sphere needs to occupy in order for the associated child to be traversed. Once one child passes this test no more children are checked, so that no more than one child will ever be traversed in a record traversal. If no child passes the visible height test then none of the LOD's children will be visible. During the record traversals the Bound sphere is also checked against the view frustum so that LOD's also enable view frustum culling for subgraphs so there is no need for a separate CullNode/CullGroup to decorate it.

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

include/vsg/nodes/LOD.h

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description