#include <OccluderGeometry.h>

Inheritance diagram for osgShadow::OccluderGeometry:

Collaboration diagram for osgShadow::OccluderGeometry:

Classes
struct	Edge

Public Types
typedef std::vector< osg::Vec3 >	Vec3List

typedef std::vector< GLuint >	UIntList

Public Types inherited from osg::Drawable
enum	AttributeTypes { VERTICES = 0, WEIGHTS = 1, NORMALS = 2, COLORS = 3, SECONDARY_COLORS = 4, FOG_COORDS = 5, ATTRIBUTE_6 = 6, ATTRIBUTE_7 = 7, TEXTURE_COORDS = 8, TEXTURE_COORDS_0 = TEXTURE_COORDS, TEXTURE_COORDS_1 = TEXTURE_COORDS_0+1, TEXTURE_COORDS_2 = TEXTURE_COORDS_0+2, TEXTURE_COORDS_3 = TEXTURE_COORDS_0+3, TEXTURE_COORDS_4 = TEXTURE_COORDS_0+4, TEXTURE_COORDS_5 = TEXTURE_COORDS_0+5, TEXTURE_COORDS_6 = TEXTURE_COORDS_0+6, TEXTURE_COORDS_7 = TEXTURE_COORDS_0+7 }

typedef unsigned int	AttributeType

Public Types inherited from osg::Node
typedef std::vector< Group * >	ParentList

typedef unsigned int	NodeMask

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

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

Public Member Functions
	OccluderGeometry ()

	OccluderGeometry (const OccluderGeometry &oc, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)

virtual Object *	cloneType () const

virtual Object *	clone (const osg::CopyOp &copyop) const

virtual bool	isSameKindAs (const osg::Object *obj) const

virtual const char *	libraryName () const

virtual const char *	className () const

void	computeOccluderGeometry (osg::Node subgraph, osg::Matrix matrix=0, float sampleRatio=1.0f)

void	computeOccluderGeometry (osg::Drawable drawable, osg::Matrix matrix=0, float sampleRatio=1.0f)

void	computeShadowVolumeGeometry (const osg::Vec4 &lightpos, ShadowVolumeGeometry &svg) const

void	setBoundingPolytope (const osg::Polytope &polytope)

osg::Polytope &	getBoundingPolytope ()

const osg::Polytope &	getBoundingPolytope () const

virtual void	drawImplementation (osg::RenderInfo &renderInfo) const

virtual osg::BoundingBox	computeBoundingBox () const

void	processGeometry (osg::Drawable drawable, osg::Matrix matrix=0, float sampleRatio=1.0f)

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

	Drawable (const Drawable &drawable, const CopyOp &copyop=CopyOp::SHALLOW_COPY)

	META_Node (osg, Drawable)

virtual Drawable *	asDrawable ()

virtual const Drawable *	asDrawable () const

virtual void	computeDataVariance ()

MatrixList	getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const

void	setInitialBound (const osg::BoundingBox &bbox)

const BoundingBox &	getInitialBound () const

const BoundingSphere &	getBound () const

const BoundingBox &	getBoundingBox () const

virtual BoundingSphere	computeBound () const

void	setComputeBoundingBoxCallback (ComputeBoundingBoxCallback *callback)

ComputeBoundingBoxCallback *	getComputeBoundingBoxCallback ()

const ComputeBoundingBoxCallback *	getComputeBoundingBoxCallback () const

void	setShape (Shape *shape)

Shape *	getShape ()

const Shape *	getShape () const

void	setSupportsDisplayList (bool flag)

bool	getSupportsDisplayList () const

void	setUseDisplayList (bool flag)

bool	getUseDisplayList () const

GLuint &	getDisplayList (unsigned int contextID) const

virtual void	setUseVertexBufferObjects (bool flag)

bool	getUseVertexBufferObjects () const

virtual void	dirtyDisplayList ()

virtual unsigned int	getGLObjectSizeHint () const

void	draw (RenderInfo &renderInfo) const

virtual void	compileGLObjects (RenderInfo &renderInfo) const

virtual void	setThreadSafeRefUnref (bool threadSafe)

virtual void	resizeGLObjectBuffers (unsigned int maxSize)

virtual void	releaseGLObjects (State *state=0) const

virtual void	setDrawCallback (DrawCallback *dc)

DrawCallback *	getDrawCallback ()

const DrawCallback *	getDrawCallback () const

virtual bool	supports (const AttributeFunctor &) const

virtual void	accept (AttributeFunctor &)

virtual bool	supports (const ConstAttributeFunctor &) const

virtual void	accept (ConstAttributeFunctor &) const

virtual bool	supports (const PrimitiveFunctor &) const

virtual void	accept (PrimitiveFunctor &) const

virtual bool	supports (const PrimitiveIndexFunctor &) const

virtual void	accept (PrimitiveIndexFunctor &) const

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

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

virtual Node *	asNode ()

virtual const Node *	asNode () const

virtual Geometry *	asGeometry ()

virtual const Geometry *	asGeometry () const

virtual Group *	asGroup ()

virtual const Group *	asGroup () const

virtual Transform *	asTransform ()

virtual const Transform *	asTransform () const

virtual Camera *	asCamera ()

virtual const Camera *	asCamera () const

virtual Switch *	asSwitch ()

virtual const Switch *	asSwitch () const

virtual Geode *	asGeode ()

virtual const Geode *	asGeode () const

virtual osgTerrain::Terrain *	asTerrain ()

virtual const osgTerrain::Terrain *	asTerrain () const

virtual void	accept (NodeVisitor &nv)

virtual void	ascend (NodeVisitor &nv)

virtual void	traverse (NodeVisitor &)

const ParentList &	getParents () const

ParentList	getParents ()

Group *	getParent (unsigned int i)

const Group *	getParent (unsigned int i) const

unsigned int	getNumParents () const

NodePathList	getParentalNodePaths (osg::Node *haltTraversalAtNode=0) const

MatrixList	getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const

void	setUpdateCallback (Callback *nc)

Callback *	getUpdateCallback ()

const Callback *	getUpdateCallback () const

void	addUpdateCallback (Callback *nc)

void	removeUpdateCallback (Callback *nc)

unsigned int	getNumChildrenRequiringUpdateTraversal () const

void	setEventCallback (Callback *nc)

Callback *	getEventCallback ()

const Callback *	getEventCallback () const

void	addEventCallback (Callback *nc)

void	removeEventCallback (Callback *nc)

unsigned int	getNumChildrenRequiringEventTraversal () const

void	setCullCallback (Callback *nc)

Callback *	getCullCallback ()

const Callback *	getCullCallback () const

void	addCullCallback (Callback *nc)

void	removeCullCallback (Callback *nc)

void	setCullingActive (bool active)

bool	getCullingActive () const

unsigned int	getNumChildrenWithCullingDisabled () const

bool	isCullingActive () const

unsigned int	getNumChildrenWithOccluderNodes () const

bool	containsOccluderNodes () const

void	setNodeMask (NodeMask nm)

NodeMask	getNodeMask () const

void	setStateSet (osg::StateSet *stateset)

osg::StateSet *	getOrCreateStateSet ()

osg::StateSet *	getStateSet ()

const osg::StateSet *	getStateSet () const

void	setDescriptions (const DescriptionList &descriptions)

DescriptionList &	getDescriptions ()

const DescriptionList &	getDescriptions () const

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

std::string &	getDescription (unsigned int i)

unsigned int	getNumDescriptions () const

void	addDescription (const std::string &desc)

void	setInitialBound (const osg::BoundingSphere &bsphere)

const BoundingSphere &	getInitialBound () const

void	dirtyBound ()

const BoundingSphere &	getBound () const

void	setComputeBoundingSphereCallback (ComputeBoundingSphereCallback *callback)

ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback ()

const ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback () const

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

	Object (bool threadSafeRefUnref)

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

std::string	getCompoundClassName () const

virtual NodeVisitor *	asNodeVisitor ()

virtual const NodeVisitor *	asNodeVisitor () const

virtual StateAttribute *	asStateAttribute ()

virtual const StateAttribute *	asStateAttribute () const

virtual Uniform *	asUniform ()

virtual const Uniform *	asUniform () const

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

void	setName (const char *name)

const std::string &	getName () const

void	setDataVariance (DataVariance dv)

DataVariance	getDataVariance () const

void	setUserDataContainer (osg::UserDataContainer *udc)

osg::UserDataContainer *	getUserDataContainer ()

const osg::UserDataContainer *	getUserDataContainer () const

osg::UserDataContainer *	getOrCreateUserDataContainer ()

virtual void	setUserData (Referenced *obj)

virtual Referenced *	getUserData ()

virtual const Referenced *	getUserData () const

template<typename T >
bool	getUserValue (const std::string &name, T &value) const

template<typename T >
void	setUserValue (const std::string &name, const T &value)

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

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

	Referenced (bool threadSafeRefUnref)

	Referenced (const Referenced &)

Referenced &	operator= (const Referenced &)

bool	getThreadSafeRefUnref () const

OpenThreads::Mutex *	getRefMutex () const

int	ref () const

int	unref () const

int	unref_nodelete () const

int	referenceCount () const

ObserverSet *	getObserverSet () const

ObserverSet *	getOrCreateObserverSet () const

void	addObserver (Observer *observer) const

void	removeObserver (Observer *observer) const

Protected Types
typedef std::vector< Edge >	EdgeList

Protected Types inherited from osg::Drawable
typedef osg::buffered_value < GLuint >	GLObjectList

Protected Member Functions
virtual	~OccluderGeometry ()

bool	isLightPointSilhouetteEdge (const osg::Vec3 &lightpos, const Edge &edge) const

bool	isLightDirectionSilhouetteEdge (const osg::Vec3 &lightdirection, const Edge &edge) const

void	setUpInternalStructures ()

void	removeDuplicateVertices ()

void	removeNullTriangles ()

void	computeNormals ()

void	buildEdgeMaps ()

void	computeLightDirectionSilhouetteEdges (const osg::Vec3 &lightdirection, UIntList &silhouetteIndices) const

void	computeLightPositionSilhouetteEdges (const osg::Vec3 &lightpos, UIntList &silhouetteIndices) const

Protected Member Functions inherited from osg::Drawable
Drawable &	operator= (const Drawable &)

virtual	~Drawable ()

void	setBound (const BoundingBox &bb) const

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

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 ()

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

void	signalObserversAndDelete (bool signalDelete, bool doDelete) const

void	deleteUsingDeleteHandler () const

Protected Attributes
osg::Polytope	_boundingPolytope

Vec3List	_vertices

Vec3List	_normals

Vec3List	_triangleNormals

UIntList	_triangleIndices

EdgeList	_edges

Protected Attributes inherited from osg::Drawable
BoundingBox	_initialBound

ref_ptr < ComputeBoundingBoxCallback >	_computeBoundCallback

BoundingBox	_boundingBox

bool	_boundingBoxComputed

ref_ptr< Shape >	_shape

bool	_supportsDisplayList

bool	_useDisplayList

bool	_supportsVertexBufferObjects

bool	_useVertexBufferObjects

GLObjectList	_globjList

ref_ptr< UpdateCallback >	_drawableUpdateCallback

ref_ptr< EventCallback >	_drawableEventCallback

ref_ptr< CullCallback >	_drawableCullCallback

ref_ptr< DrawCallback >	_drawCallback

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::Drawable
static GLuint	generateDisplayList (unsigned int contextID, unsigned int sizeHint=0)

static void	setMinimumNumberOfDisplayListsToRetainInCache (unsigned int minimum)

static unsigned int	getMinimumNumberOfDisplayListsToRetainInCache ()

static void	deleteDisplayList (unsigned int contextID, GLuint globj, unsigned int sizeHint=0)

static void	flushAllDeletedDisplayLists (unsigned int contextID)

static void	discardAllDeletedDisplayLists (unsigned int contextID)

static void	flushDeletedDisplayLists (unsigned int contextID, double &availableTime)

Static Public Member Functions inherited from osg::Referenced
static OpenThreads::Mutex *	getGlobalReferencedMutex ()

static void	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)

static bool	getThreadSafeReferenceCounting ()

static void	setDeleteHandler (DeleteHandler *handler)

static DeleteHandler *	getDeleteHandler ()

Static Public Attributes inherited from osg::Drawable
static unsigned int	s_numberDrawablesReusedLastInLastFrame

static unsigned int	s_numberNewDrawablesInLastFrame

static unsigned int	s_numberDeletedDrawablesInLastFrame

Detailed Description

OccluderGeometry provides a sepecialised geometry representation of objects in scene that occlude light and therefore cast shadows. OccluderGeometry supports the computation of silhouette edges and shadow volume geometries, as well as use as geometry that one can rendering into a shadow map or end caps for the ZP+ algorithm. OccluderGeometry may be of the same resolution as an underlying geometry that it represents, or can be of lower resolution and combine manager separate geometries together into a single shadow casting object. OccluderGeometry may be attached as UserData to Nodes or to Drawables.

Definition at line 34 of file OccluderGeometry.h.

Member Typedef Documentation

typedef std::vector<Edge> osgShadow::OccluderGeometry::EdgeList

protected

Definition at line 141 of file OccluderGeometry.h.

typedef std::vector<GLuint> osgShadow::OccluderGeometry::UIntList

Definition at line 75 of file OccluderGeometry.h.

typedef std::vector<osg::Vec3> osgShadow::OccluderGeometry::Vec3List

Definition at line 74 of file OccluderGeometry.h.

Constructor & Destructor Documentation

osgShadow::OccluderGeometry::OccluderGeometry ( )

osgShadow::OccluderGeometry::OccluderGeometry	(	const OccluderGeometry &	oc,
		const osg::CopyOp &	copyop = `osg::CopyOp::SHALLOW_COPY`
	)

virtual osgShadow::OccluderGeometry::~OccluderGeometry ( )

inlineprotectedvirtual

Definition at line 83 of file OccluderGeometry.h.

Member Function Documentation

void osgShadow::OccluderGeometry::buildEdgeMaps ( )

protected

virtual const char* osgShadow::OccluderGeometry::className ( ) const

inlinevirtual

return the name of the node's class type.

Reimplemented from osg::Node.

Definition at line 45 of file OccluderGeometry.h.

virtual Object* osgShadow::OccluderGeometry::clone ( const osg::CopyOp & copyop ) const

inlinevirtual

return a clone of a node, with Object* return type.

Reimplemented from osg::Node.

Definition at line 42 of file OccluderGeometry.h.

virtual Object* osgShadow::OccluderGeometry::cloneType ( ) const

inlinevirtual

clone an object of the same type as the node.

Reimplemented from osg::Node.

Definition at line 41 of file OccluderGeometry.h.

virtual osg::BoundingBox osgShadow::OccluderGeometry::computeBoundingBox ( ) const

virtual

Compute the bounding box around occluder geometry.

Reimplemented from osg::Drawable.

void osgShadow::OccluderGeometry::computeLightDirectionSilhouetteEdges	(	const osg::Vec3 &	lightdirection,
		UIntList &	silhouetteIndices
	)		const

protected

void osgShadow::OccluderGeometry::computeLightPositionSilhouetteEdges	(	const osg::Vec3 &	lightpos,
		UIntList &	silhouetteIndices
	)		const

protected

void osgShadow::OccluderGeometry::computeNormals ( )

protected

void osgShadow::OccluderGeometry::computeOccluderGeometry	(	osg::Node *	subgraph,
		osg::Matrix *	matrix = `0`,
		float	sampleRatio = `1.0f`
	)

Compute an occluder geometry containing all the geometry in specified subgraph.

void osgShadow::OccluderGeometry::computeOccluderGeometry	(	osg::Drawable *	drawable,
		osg::Matrix *	matrix = `0`,
		float	sampleRatio = `1.0f`
	)

Compute an occluder geometry containing the geometry in specified drawable.

void osgShadow::OccluderGeometry::computeShadowVolumeGeometry	(	const osg::Vec4 &	lightpos,
		ShadowVolumeGeometry &	svg
	)		const

Compute ShadowVolumeGeometry.

virtual void osgShadow::OccluderGeometry::drawImplementation ( osg::RenderInfo & renderInfo ) const

virtual

Render the occluder geometry.

Reimplemented from osg::Drawable.

osg::Polytope& osgShadow::OccluderGeometry::getBoundingPolytope ( )

inline

Get the bounding polytope of the OccluderGeometry.

Definition at line 62 of file OccluderGeometry.h.

const osg::Polytope& osgShadow::OccluderGeometry::getBoundingPolytope ( ) const

inline

Get the const bounding polytope of the OccluderGeometry.

Definition at line 65 of file OccluderGeometry.h.

bool osgShadow::OccluderGeometry::isLightDirectionSilhouetteEdge	(	const osg::Vec3 &	lightdirection,
		const Edge &	edge
	)		const

inlineprotected

Definition at line 165 of file OccluderGeometry.h.

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bool osgShadow::OccluderGeometry::isLightPointSilhouetteEdge	(	const osg::Vec3 &	lightpos,
		const Edge &	edge
	)		const

inlineprotected

Definition at line 143 of file OccluderGeometry.h.

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virtual bool osgShadow::OccluderGeometry::isSameKindAs ( const osg::Object * obj ) const

inlinevirtual

return true if this and obj are of the same kind of object.

Reimplemented from osg::Node.

Definition at line 43 of file OccluderGeometry.h.

virtual const char* osgShadow::OccluderGeometry::libraryName ( ) const

inlinevirtual

return the name of the node's library.

Reimplemented from osg::Node.

Definition at line 44 of file OccluderGeometry.h.

void osgShadow::OccluderGeometry::processGeometry	(	osg::Drawable *	drawable,
		osg::Matrix *	matrix = `0`,
		float	sampleRatio = `1.0f`
	)

void osgShadow::OccluderGeometry::removeDuplicateVertices ( )

protected

void osgShadow::OccluderGeometry::removeNullTriangles ( )

protected

void osgShadow::OccluderGeometry::setBoundingPolytope ( const osg::Polytope & polytope )

inline

Set the bounding polytope of the OccluderGeometry.

Definition at line 59 of file OccluderGeometry.h.

void osgShadow::OccluderGeometry::setUpInternalStructures ( )

protected

Member Data Documentation

osg::Polytope osgShadow::OccluderGeometry::_boundingPolytope

protected

Definition at line 194 of file OccluderGeometry.h.

EdgeList osgShadow::OccluderGeometry::_edges

protected

Definition at line 201 of file OccluderGeometry.h.

Vec3List osgShadow::OccluderGeometry::_normals

protected

Definition at line 197 of file OccluderGeometry.h.

UIntList osgShadow::OccluderGeometry::_triangleIndices

protected

Definition at line 199 of file OccluderGeometry.h.

Vec3List osgShadow::OccluderGeometry::_triangleNormals

protected

Definition at line 198 of file OccluderGeometry.h.

Vec3List osgShadow::OccluderGeometry::_vertices

protected

Definition at line 196 of file OccluderGeometry.h.

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

osg_head/include/osgShadow/OccluderGeometry.h

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation