osgUtil::CullVisitor Class Reference

Basic NodeVisitor implementation for rendering a scene. More...

Inheritance diagram for osgUtil::CullVisitor:

[legend]List of all members.


Public Types
typedef osg::Matrix::value_type	value_type
Public Member Functions
	CullVisitor ()
virtual	~CullVisitor ()
virtual CullVisitor *	cloneType () const
virtual void	reset ()
virtual osg::Vec3	getEyePoint () const
	Get the eye point in local coordinates.
virtual float	getDistanceToEyePoint (const osg::Vec3 &pos, bool withLODScale) const
virtual float	getDistanceFromEyePoint (const osg::Vec3 &pos, bool withLODScale) const
virtual void	apply (osg::Node &)
virtual void	apply (osg::Geode &node)
virtual void	apply (osg::Billboard &node)
virtual void	apply (osg::LightSource &node)
virtual void	apply (osg::ClipNode &node)
virtual void	apply (osg::TexGenNode &node)
virtual void	apply (osg::Group &node)
virtual void	apply (osg::Transform &node)
virtual void	apply (osg::Projection &node)
virtual void	apply (osg::Switch &node)
virtual void	apply (osg::LOD &node)
virtual void	apply (osg::ClearNode &node)
virtual void	apply (osg::CameraNode &node)
virtual void	apply (osg::OccluderNode &node)
void	setClearNode (const osg::ClearNode *earthSky)
const osg::ClearNode *	getClearNode () const
void	pushStateSet (const osg::StateSet *ss)
	Push state set on the current state group.
void	popStateSet ()
	Pop the top state set and hence associated state group.
void	setStateGraph (StateGraph *rg)
StateGraph *	getRootStateGraph ()
StateGraph *	getCurrentStateGraph ()
void	setRenderStage (RenderStage *rg)
RenderStage *	getRenderStage ()
RenderBin *	getCurrentRenderBin ()
void	setCurrentRenderBin (RenderBin *rb)
value_type	getCalculatedNearPlane () const
value_type	getCalculatedFarPlane () const
value_type	computeNearestPointInFrustum (const osg::Matrix &matrix, const osg::Polytope::PlaneList &planes, const osg::Drawable &drawable)
bool	updateCalculatedNearFar (const osg::Matrix &matrix, const osg::BoundingBox &bb)
bool	updateCalculatedNearFar (const osg::Matrix &matrix, const osg::Drawable &drawable, bool isBillboard=false)
void	updateCalculatedNearFar (const osg::Vec3 &pos)
void	addDrawable (osg::Drawable drawable, osg::RefMatrix matrix)
	Add a drawable to current render graph.
void	addDrawableAndDepth (osg::Drawable drawable, osg::RefMatrix matrix, float depth)
	Add a drawable and depth to current render graph.
void	addPositionedAttribute (osg::RefMatrix matrix, const osg::StateAttribute attr)
	Add an attribute which is positioned relative to the modelview matrix.
void	addPositionedTextureAttribute (unsigned int textureUnit, osg::RefMatrix matrix, const osg::StateAttribute attr)
	Add an attribute which is positioned relative to the modelview matrix.
virtual void	popProjectionMatrix ()
	Re-implement CullStack's popProjectionMatrix() adding clamping of the projection matrix to the computed near and far.
virtual bool	clampProjectionMatrixImplementation (osg::Matrixf &projection, double &znear, double &zfar) const
	CullVisitor's default clamping of the projection float matrix to computed near and far values.
virtual bool	clampProjectionMatrixImplementation (osg::Matrixd &projection, double &znear, double &zfar) const
	CullVisitor's default clamping of the projection double matrix to computed near and far values.
bool	clampProjectionMatrix (osg::Matrixf &projection, value_type &znear, value_type &zfar) const
	Clamp the projection float matrix to computed near and far values, use callback if it exists, otherwise use default CullVisitor implementation.
bool	clampProjectionMatrix (osg::Matrixd &projection, value_type &znear, value_type &zfar) const
	Clamp the projection double matrix to computed near and far values, use callback if it exists, otherwise use default CullVisitor implementation.
void	setState (osg::State *state)
osg::State *	getState ()
const osg::State *	getState () const
Protected Types
typedef std::vector< osg::ref_ptr< RenderLeaf > >	RenderLeafList
typedef std::multimap< value_type, MatrixPlanesDrawables >	DistanceMatrixDrawableMap
Protected Member Functions
CullVisitor &	operator= (const CullVisitor &)
	Prevent unwanted copy operator.
void	handle_cull_callbacks_and_traverse (osg::Node &node)
void	handle_cull_callbacks_and_accept (osg::Node &node, osg::Node *acceptNode)
RenderLeaf *	createOrReuseRenderLeaf (osg::Drawable drawable, osg::RefMatrix projection, osg::RefMatrix *matrix, float depth=0.0f)
Protected Attributes
osg::ref_ptr< const osg::ClearNode >	_clearNode
osg::ref_ptr< StateGraph >	_rootStateGraph
StateGraph *	_currentStateGraph
osg::ref_ptr< RenderStage >	_rootRenderStage
RenderBin *	_currentRenderBin
value_type	_computed_znear
value_type	_computed_zfar
RenderLeafList	_reuseRenderLeafList
unsigned int	_currentReuseRenderLeafIndex
osg::ref_ptr< osg::State >	_state
DistanceMatrixDrawableMap	_nearPlaneCandidateMap

Detailed Description

Basic NodeVisitor implementation for rendering a scene.

This visitor traverses the scene graph, collecting transparent and opaque osg::Drawables into a depth sorted transparent bin and a state sorted opaque bin. The opaque bin is rendered first, and then the transparent bin is rendered in order from the furthest osg::Drawable from the eye to the one nearest the eye.

Member Typedef Documentation

typedef std::multimap<value_type, MatrixPlanesDrawables> osgUtil::CullVisitor::DistanceMatrixDrawableMap [protected]

typedef std::vector< osg::ref_ptr<RenderLeaf> > osgUtil::CullVisitor::RenderLeafList [protected]

typedef osg::Matrix::value_type osgUtil::CullVisitor::value_type

Constructor & Destructor Documentation

osgUtil::CullVisitor::CullVisitor ( )

virtual osgUtil::CullVisitor::~CullVisitor ( ) [virtual]

Member Function Documentation

void osgUtil::CullVisitor::addDrawable ( osg::Drawable * drawable,

osg::RefMatrix * matrix

) [inline]

Add a drawable to current render graph.

void osgUtil::CullVisitor::addDrawableAndDepth ( osg::Drawable * drawable,

osg::RefMatrix * matrix,

float depth

) [inline]

Add a drawable and depth to current render graph.

void osgUtil::CullVisitor::addPositionedAttribute ( osg::RefMatrix * matrix,

const osg::StateAttribute * attr

) [inline]

Add an attribute which is positioned relative to the modelview matrix.

void osgUtil::CullVisitor::addPositionedTextureAttribute ( unsigned int textureUnit,

osg::RefMatrix * matrix,

const osg::StateAttribute * attr

) [inline]

Add an attribute which is positioned relative to the modelview matrix.

virtual void osgUtil::CullVisitor::apply ( osg::OccluderNode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::CameraNode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::ClearNode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::LOD & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Switch & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Projection & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Transform & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Group & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::TexGenNode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::ClipNode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::LightSource & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Billboard & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Geode & node ) [virtual]

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::CullVisitor::apply ( osg::Node & ) [virtual]

Reimplemented from osg::NodeVisitor.

bool osgUtil::CullVisitor::clampProjectionMatrix ( osg::Matrixd & projection,

value_type & znear,

value_type & zfar

) const [inline]

Clamp the projection double matrix to computed near and far values, use callback if it exists, otherwise use default CullVisitor implementation.

bool osgUtil::CullVisitor::clampProjectionMatrix ( osg::Matrixf & projection,

value_type & znear,

value_type & zfar

) const [inline]

Clamp the projection float matrix to computed near and far values, use callback if it exists, otherwise use default CullVisitor implementation.

virtual bool osgUtil::CullVisitor::clampProjectionMatrixImplementation ( osg::Matrixd & projection,

double & znear,

double & zfar

) const [virtual]

CullVisitor's default clamping of the projection double matrix to computed near and far values.
Note, do not call this method directly, use clampProjectionMatrix(..) instead, unless you want to bypass the callback.

virtual bool osgUtil::CullVisitor::clampProjectionMatrixImplementation ( osg::Matrixf & projection,

double & znear,

double & zfar

) const [virtual]

CullVisitor's default clamping of the projection float matrix to computed near and far values.
Note, do not call this method directly, use clampProjectionMatrix(..) instead, unless you want to bypass the callback.

virtual CullVisitor* osgUtil::CullVisitor::cloneType ( ) const [inline, virtual]

value_type osgUtil::CullVisitor::computeNearestPointInFrustum ( const osg::Matrix & matrix,

const osg::Polytope::PlaneList & planes,

const osg::Drawable & drawable

)

RenderLeaf * osgUtil::CullVisitor::createOrReuseRenderLeaf ( osg::Drawable * drawable,

osg::RefMatrix * projection,

osg::RefMatrix * matrix,

float depth = 0.0f

) [inline, protected]

value_type osgUtil::CullVisitor::getCalculatedFarPlane ( ) const [inline]

value_type osgUtil::CullVisitor::getCalculatedNearPlane ( ) const [inline]

const osg::ClearNode* osgUtil::CullVisitor::getClearNode ( ) const [inline]

RenderBin* osgUtil::CullVisitor::getCurrentRenderBin ( ) [inline]

StateGraph* osgUtil::CullVisitor::getCurrentStateGraph ( ) [inline]

virtual float osgUtil::CullVisitor::getDistanceFromEyePoint ( const osg::Vec3 & pos,

bool withLODScale

) const [virtual]

virtual float osgUtil::CullVisitor::getDistanceToEyePoint ( const osg::Vec3 & pos,

bool withLODScale

) const [virtual]

virtual osg::Vec3 osgUtil::CullVisitor::getEyePoint ( ) const [inline, virtual]

Get the eye point in local coordinates.
Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.
Reimplemented from osg::NodeVisitor.

RenderStage* osgUtil::CullVisitor::getRenderStage ( ) [inline]

StateGraph* osgUtil::CullVisitor::getRootStateGraph ( ) [inline]

const osg::State* osgUtil::CullVisitor::getState ( ) const [inline]

osg::State* osgUtil::CullVisitor::getState ( ) [inline]

void osgUtil::CullVisitor::handle_cull_callbacks_and_accept ( osg::Node & node,

osg::Node * acceptNode

) [inline, protected]

void osgUtil::CullVisitor::handle_cull_callbacks_and_traverse ( osg::Node & node ) [inline, protected]

CullVisitor& osgUtil::CullVisitor::operator= ( const CullVisitor & ) [inline, protected]

Prevent unwanted copy operator.

virtual void osgUtil::CullVisitor::popProjectionMatrix ( ) [virtual]

Re-implement CullStack's popProjectionMatrix() adding clamping of the projection matrix to the computed near and far.

Reimplemented from osg::CullStack.

void osgUtil::CullVisitor::popStateSet ( ) [inline]

Pop the top state set and hence associated state group.
Move the current state group to the parent of the popped state group.

void osgUtil::CullVisitor::pushStateSet ( const osg::StateSet * ss ) [inline]

Push state set on the current state group.
If the state exists in a child state group of the current state group then move the current state group to that child. Otherwise, create a new state group for the state set, add it to the current state group then move the current state group pointer to the new state group.