class SG_EXPORT osg::ClearNode

ClearNode is a Group node which controls the clearing of the color and depth buffers at the start of each frame.

Inheritance:

Public Methods

ClearNode()

ClearNode(const ClearNode& es, const CopyOp& copyop=CopyOp::SHALLOW_COPY)

META_Node(osg, ClearNode)

inline void setRequiresClear(bool requiresClear)

Sets the flag which control whether a glClear is required at the beginning of each frame.

inline bool getRequiresClear() const

Gets the flag which control whether a glClear is required at the beginning of each frame.

inline void setClearColor(const Vec4& color)

Sets the clear color.

inline const Vec4& getClearColor() const

Returns the clear color.

Protected Fields

bool _requiresClear

Vec4 _clearColor

Protected Methods

virtual ~ClearNode()

Inherited from Group:

Public Methods

virtual Group* asGroup()

virtual const Group* asGroup() const

virtual void traverse(NodeVisitor& nv)

virtual bool addChild( Node* child )

virtual bool insertChild( unsigned int index, Node* child )

virtual bool removeChild( Node* child )

virtual bool removeChild(unsigned int pos, unsigned int numChildrenToRemove=1)

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

Protected Fields

NodeList _children

Protected Methods

virtual bool computeBound() const

virtual void childRemoved(unsigned int , unsigned int )

virtual void childInserted(unsigned int )

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

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

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 Classes

enum DataVariance

Public Methods

inline void setDataVariance(DataVariance dv)

inline DataVariance getDataVariance() const

inline void setUserData(Referenced* obj)

inline Referenced* getUserData()

inline const Referenced* getUserData() const

Protected Fields

DataVariance _dataVariance

ref_ptr<Referenced> _userData

Inherited from Referenced:

Public Methods

inline Referenced& operator = (const 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 OpenThreads::Mutex _refMutex

mutable int _refCount

Documentation

ClearNode is a Group node which controls the clearing of the color and depth buffers at the start of each frame. The earth sky by default is empty and simply holds the clear color of the background. However, if the uses wants to add their own clearing of the color and depth buffers then the children can be added, and the background clear turned off. The ClearNode by default has StateSet attached to it which sets the default ClearNode bin number to -1, so that all drawables below it are placed in a separate bin from the rest of the scene graph, and are rendered prior to standard opaque and transparent drawables.

ClearNode()

ClearNode(const ClearNode& es, const CopyOp& copyop=CopyOp::SHALLOW_COPY)

META_Node(osg, ClearNode)

inline void setRequiresClear(bool requiresClear)

Sets the flag which control whether a glClear is required at the beginning of each frame.

inline bool getRequiresClear() const

Gets the flag which control whether a glClear is required at the beginning of each frame.

inline void setClearColor(const Vec4& color)

Sets the clear color.

inline const Vec4& getClearColor() const

Returns the clear color.

virtual ~ClearNode()

bool _requiresClear

Vec4 _clearColor

This class has no child classes.

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