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osgShadow::OccluderGeometry Class Reference
Inheritance diagram for osgShadow::OccluderGeometry:
osg::Drawable osg::Object osg::Referenced

Classes

struct  Edge

Public Types

typedef std::vector< osg::Vec3Vec3List
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 std::vector< Node * > ParentList
typedef unsigned int AttributeType
- 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 ObjectcloneType () const
virtual Objectclone (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::PolytopegetBoundingPolytope ()
const osg::PolytopegetBoundingPolytope () const
virtual void drawImplementation (osg::RenderInfo &renderInfo) const
virtual osg::BoundingBox computeBound () 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)
virtual GeometryasGeometry ()
virtual const GeometryasGeometry () const
virtual void computeDataVariance ()
const ParentListgetParents () const
ParentList getParents ()
NodegetParent (unsigned int i)
const NodegetParent (unsigned int i) const
unsigned int getNumParents () const
MatrixList getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const
void setStateSet (StateSet *stateset)
StateSetgetStateSet ()
const StateSetgetStateSet () const
StateSetgetOrCreateStateSet ()
void setInitialBound (const osg::BoundingBox &bbox)
const BoundingBoxgetInitialBound () const
void dirtyBound ()
const BoundingBoxgetBound () const
void setComputeBoundingBoxCallback (ComputeBoundingBoxCallback *callback)
ComputeBoundingBoxCallbackgetComputeBoundingBoxCallback ()
const ComputeBoundingBoxCallbackgetComputeBoundingBoxCallback () const
void setShape (Shape *shape)
ShapegetShape ()
const ShapegetShape () 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 setUpdateCallback (UpdateCallback *ac)
UpdateCallbackgetUpdateCallback ()
const UpdateCallbackgetUpdateCallback () const
bool requiresUpdateTraversal () const
virtual void setEventCallback (EventCallback *ac)
EventCallbackgetEventCallback ()
const EventCallbackgetEventCallback () const
bool requiresEventTraversal () const
virtual void setCullCallback (CullCallback *cc)
CullCallbackgetCullCallback ()
const CullCallbackgetCullCallback () const
virtual void setDrawCallback (DrawCallback *dc)
DrawCallbackgetDrawCallback ()
const DrawCallbackgetDrawCallback () 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::Object
 Object ()
 Object (bool threadSafeRefUnref)
 Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
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::UserDataContainergetUserDataContainer ()
const osg::UserDataContainergetUserDataContainer () const
osg::UserDataContainergetOrCreateUserDataContainer ()
virtual void setUserData (Referenced *obj)
virtual ReferencedgetUserData ()
virtual const ReferencedgetUserData () 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)
- Public Member Functions inherited from osg::Referenced
 Referenced ()
 Referenced (bool threadSafeRefUnref)
 Referenced (const Referenced &)
Referencedoperator= (const Referenced &)
bool getThreadSafeRefUnref () const
OpenThreads::MutexgetRefMutex () const
int ref () const
int unref () const
int unref_nodelete () const
int referenceCount () const
ObserverSetgetObserverSet () const
ObserverSetgetOrCreateObserverSet () const
void addObserver (Observer *observer) const
void removeObserver (Observer *observer) const

Protected Types

typedef std::vector< EdgeEdgeList
- 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
Drawableoperator= (const Drawable &)
virtual ~Drawable ()
void setBound (const BoundingBox &bb) const
void addParent (osg::Node *node)
void removeParent (osg::Node *node)
void setNumChildrenRequiringUpdateTraversal (unsigned int num)
unsigned int getNumChildrenRequiringUpdateTraversal () const
void setNumChildrenRequiringEventTraversal (unsigned int num)
unsigned int getNumChildrenRequiringEventTraversal () const
- 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
ParentList _parents
ref_ptr< StateSet_stateset
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_updateCallback
unsigned int _numChildrenRequiringUpdateTraversal
ref_ptr< EventCallback_eventCallback
unsigned int _numChildrenRequiringEventTraversal
ref_ptr< CullCallback_cullCallback
ref_ptr< DrawCallback_drawCallback
- 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 ExtensionsgetExtensions (unsigned int contextID, bool createIfNotInitalized)
static void setExtensions (unsigned int contextID, Extensions *extensions)
- 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 seperate geometries together into a single shadow casting object. OccluderGeometry may be attached as UserData to Nodes or to Drawables.

Member Typedef Documentation

typedef std::vector<Edge> osgShadow::OccluderGeometry::EdgeList
protected
typedef std::vector<GLuint> osgShadow::OccluderGeometry::UIntList

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

Member Function Documentation

void osgShadow::OccluderGeometry::buildEdgeMaps ( )
protected
virtual const char* osgShadow::OccluderGeometry::className ( ) const
inlinevirtual

return the name of the object's class type. Must be defined by derived classes.

Reimplemented from osg::Drawable.

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

Clone an object, with Object* return type. Must be defined by derived classes.

Implements osg::Object.

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

Clone the type of an object, with Object* return type. Must be defined by derived classes.

Implements osg::Object.

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

Render the occluder geometry.

Implements osg::Drawable.

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

Get the bounding polytope of the OccluderGeometry.

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

Get the const bounding polytope of the OccluderGeometry.

bool osgShadow::OccluderGeometry::isLightDirectionSilhouetteEdge ( const osg::Vec3 lightdirection,
const Edge edge 
) const
inlineprotected
bool osgShadow::OccluderGeometry::isLightPointSilhouetteEdge ( const osg::Vec3 lightpos,
const Edge edge 
) const
inlineprotected
virtual bool osgShadow::OccluderGeometry::isSameKindAs ( const osg::Object obj) const
inlinevirtual

Reimplemented from osg::Drawable.

References NULL.

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

return the name of the object's library. Must be defined by derived classes. The OpenSceneGraph convention is that the namespace of a library is the same as the library name.

Reimplemented from osg::Drawable.

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.

void osgShadow::OccluderGeometry::setUpInternalStructures ( )
protected

Member Data Documentation

osg::Polytope osgShadow::OccluderGeometry::_boundingPolytope
protected
EdgeList osgShadow::OccluderGeometry::_edges
protected
Vec3List osgShadow::OccluderGeometry::_normals
protected
UIntList osgShadow::OccluderGeometry::_triangleIndices
protected
Vec3List osgShadow::OccluderGeometry::_triangleNormals
protected
Vec3List osgShadow::OccluderGeometry::_vertices
protected

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