class SG_EXPORT osg::LOD

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

Inheritance:

Public Methods

LOD()

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

Copy constructor using CopyOp to manage deep vs shallow copy

META_Node(osg, LOD)

virtual void traverse(NodeVisitor& nv)

virtual bool addChild(Node* child)

virtual bool addChild(Node* child, float min, float max)

virtual bool removeChild(Node* child)

void setCenterMode(CenterMode mode)

CenterMode getCenterMode() const

inline void setCenter(const Vec3& center)

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

inline const Vec3& getCenter() const

return the LOD center point.

void setRange(unsigned int childNo, float min, float max)

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

inline float getMinRange(unsigned int childNo) const

returns the min visible range for specified child

inline float getMaxRange(unsigned int childNo) const

returns the max visible range for specified child

inline unsigned int getNumRanges() const

returns the number of ranges currently set.

inline RangeList& getRangeList()

return the list of MinMax ranges for each child

inline const RangeList& getRangeList() const

return the list of MinMax ranges for each child

Public Members

typedef std::pair<float,float> MinMaxPair

typedef std::vector<MinMaxPair> RangeList

enum CenterMode

Protected Fields

CenterMode _centerMode

Vec3 _userDefinedCenter

RangeList _rangeList

Protected Methods

virtual ~LOD()

Inherited from Group:

Public Methods

virtual Group* asGroup()

virtual const Group* asGroup() const

virtual bool replaceChild( Node* origChild, Node* newChild )

inline unsigned int getNumChildren() const

virtual bool setChild( unsigned int i, Node* node )

inline Node* getChild( unsigned int i )

inline const Node* getChild( unsigned int i ) const

inline bool containsNode( const Node* node ) const

inline unsigned int getChildIndex( const Node* node ) const

Public Members

typedef std::vector<ref_ptr<Node> > ChildList

Protected Fields

ChildList _children

Protected Methods

virtual bool computeBound() const

Inherited from Node:

Public Methods

virtual Object* cloneType() const

virtual Object* clone(const CopyOp& copyop) const

virtual bool isSameKindAs(const Object* obj) const

virtual const char* libraryName() const

virtual const char* className() const

virtual Transform* asTransform()

virtual const Transform* asTransform() const

virtual void accept(NodeVisitor& nv)

virtual void ascend(NodeVisitor& nv)

inline void setName( const std::string& name )

inline void setName( const char* name )

inline const std::string& getName() const

inline const ParentList& getParents() const

inline ParentList getParents()

inline Group* getParent(unsigned int i)

inline const Group* getParent(unsigned int i) const

inline unsigned int getNumParents() const

void setUpdateCallback(NodeCallback* nc)

inline NodeCallback* getUpdateCallback()

inline const NodeCallback* getUpdateCallback() const

void setAppCallback(NodeCallback* nc)

inline NodeCallback* getAppCallback()

inline const NodeCallback* getAppCallback() const

inline unsigned int getNumChildrenRequiringUpdateTraversal() const

void setCullCallback(NodeCallback* nc)

inline NodeCallback* getCullCallback()

inline const NodeCallback* getCullCallback() const

void setCullingActive(bool active)

inline bool getCullingActive() const

inline unsigned int getNumChildrenWithCullingDisabled() const

inline bool isCullingActive() const

inline unsigned int getNumChildrenWithOccluderNodes() const

bool containsOccluderNodes() const

inline void setNodeMask(NodeMask nm)

inline NodeMask getNodeMask() const

inline const DescriptionList& getDescriptions() const

inline DescriptionList& getDescriptions()

inline const std::string& getDescription(unsigned int i) const

inline std::string& getDescription(unsigned int i)

inline unsigned int getNumDescriptions() const

void addDescription(const std::string& desc)

inline void setStateSet(osg::StateSet* dstate)

osg::StateSet* getOrCreateStateSet()

inline osg::StateSet* getStateSet()

inline const osg::StateSet* getStateSet() const

inline const BoundingSphere& getBound() const

void dirtyBound()

Public Members

typedef std::vector<Group*> ParentList

typedef unsigned int NodeMask

typedef std::vector<std::string> DescriptionList

Protected Fields

mutable BoundingSphere _bsphere

mutable bool _bsphere_computed

std::string _name

ParentList _parents

ref_ptr<NodeCallback> _updateCallback

unsigned int _numChildrenRequiringUpdateTraversal

ref_ptr<NodeCallback> _cullCallback

bool _cullingActive

unsigned int _numChildrenWithCullingDisabled

unsigned int _numChildrenWithOccluderNodes

NodeMask _nodeMask

DescriptionList _descriptions

ref_ptr<StateSet> _stateset

Protected Methods

void addParent(osg::Group* node)

void removeParent(osg::Group* node)

void setNumChildrenRequiringUpdateTraversal(unsigned int num)

void setNumChildrenWithCullingDisabled(unsigned int num)

void setNumChildrenWithOccluderNodes(unsigned int num)

Inherited from Object:

Public Methods

inline void setDataVariance(DataVariance dv)

inline DataVariance getDataVariance() const

inline void setUserData(Referenced* obj)

inline Referenced* getUserData()

inline const Referenced* getUserData() const

Public Members

enum DataVariance

Protected Fields

DataVariance _dataVariance

ref_ptr<Referenced> _userData

Inherited from Referenced:

Public Methods

inline Referenced& operator = (Referenced&)

static void setDeleteHandler(DeleteHandler* handler)

static DeleteHandler* getDeleteHandler()

inline void ref() const

inline void unref_nodelete() const

inline int referenceCount() const

inline void unref() const

Protected Fields

mutable int _refCount

Documentation

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. The children are ordered from most detailed (for close up views) to the least (see from a distance), and a set of ranges are used to decide which LOD is used at different view distances, the criteria used is child 'i' is used when range[i]

LOD()

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

Copy constructor using CopyOp to manage deep vs shallow copy

META_Node(osg, LOD)

virtual void traverse(NodeVisitor& nv)

virtual bool addChild(Node* child)

virtual bool addChild(Node* child, float min, float max)

virtual bool removeChild(Node* child)

typedef std::pair<float,float> MinMaxPair

typedef std::vector<MinMaxPair> RangeList

enum CenterMode

USE_BOUNDING_SPHERE_CENTER

USER_DEFINED_CENTER

void setCenterMode(CenterMode mode)

CenterMode getCenterMode() const

inline void setCenter(const Vec3& center)

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.

inline const Vec3& getCenter() const

return the LOD center point.

void setRange(unsigned int childNo, float min, float max)

Sets the min and max visible ranges of range of specifiec child. Values are floating point distance specified in local objects coordinates.

inline float getMinRange(unsigned int childNo) const

returns the min visible range for specified child

inline float getMaxRange(unsigned int childNo) const

returns the max visible range for specified child

inline unsigned int getNumRanges() const

returns the number of ranges currently set. An LOD which has been fully set up will have getNumChildren()==getNumRanges().

inline RangeList& getRangeList()

return the list of MinMax ranges for each child

inline const RangeList& getRangeList() const

return the list of MinMax ranges for each child

virtual ~LOD()

CenterMode _centerMode

Vec3 _userDefinedCenter

RangeList _rangeList

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