openscenegraph
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#include <NodeVisitor>
Classes | |
class | DatabaseRequestHandler |
class | ImageRequestHandler |
Public Types | |
enum | TraversalMode { TRAVERSE_NONE , TRAVERSE_PARENTS , TRAVERSE_ALL_CHILDREN , TRAVERSE_ACTIVE_CHILDREN } |
enum | VisitorType { NODE_VISITOR = 0 , UPDATE_VISITOR , EVENT_VISITOR , COLLECT_OCCLUDER_VISITOR , CULL_VISITOR , INTERSECTION_VISITOR } |
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enum | DataVariance { DYNAMIC , STATIC , UNSPECIFIED } |
Public Member Functions | |
NodeVisitor (TraversalMode tm=TRAVERSE_NONE) | |
NodeVisitor (VisitorType type, TraversalMode tm=TRAVERSE_NONE) | |
NodeVisitor (const NodeVisitor &nv, const osg::CopyOp ©op=osg::CopyOp::SHALLOW_COPY) | |
virtual | ~NodeVisitor () |
META_Object (osg, NodeVisitor) virtual NodeVisitor *asNodeVisitor() | |
virtual const NodeVisitor * | asNodeVisitor () const |
virtual osgUtil::UpdateVisitor * | asUpdateVisitor () |
virtual const osgUtil::UpdateVisitor * | asUpdateVisitor () const |
virtual osgUtil::CullVisitor * | asCullVisitor () |
virtual const osgUtil::CullVisitor * | asCullVisitor () const |
virtual osgGA::EventVisitor * | asEventVisitor () |
virtual const osgGA::EventVisitor * | asEventVisitor () const |
virtual osgUtil::IntersectionVisitor * | asIntersectionVisitor () |
virtual const osgUtil::IntersectionVisitor * | asIntersectionVisitor () const |
virtual osg::CullStack * | asCullStack () |
virtual const osg::CullStack * | asCullStack () const |
virtual void | reset () |
void | setVisitorType (VisitorType type) |
VisitorType | getVisitorType () const |
void | setTraversalNumber (unsigned int fn) |
unsigned int | getTraversalNumber () const |
void | setFrameStamp (FrameStamp *fs) |
const FrameStamp * | getFrameStamp () const |
void | setTraversalMask (Node::NodeMask mask) |
Node::NodeMask | getTraversalMask () const |
void | setNodeMaskOverride (Node::NodeMask mask) |
Node::NodeMask | getNodeMaskOverride () const |
bool | validNodeMask (const osg::Node &node) const |
void | setTraversalMode (TraversalMode mode) |
TraversalMode | getTraversalMode () const |
void | setValueMap (ValueMap *ps) |
ValueMap * | getValueMap () |
const ValueMap * | getValueMap () const |
ValueMap * | getOrCreateValueMap () |
void | setValueStack (ValueStack *ps) |
ValueStack * | getValueStack () |
const ValueStack * | getValueStack () const |
ValueStack * | getOrCreateValueStack () |
void | traverse (Node &node) |
void | pushOntoNodePath (Node *node) |
void | popFromNodePath () |
NodePath & | getNodePath () |
const NodePath & | getNodePath () const |
virtual osg::Vec3 | getEyePoint () const |
virtual osg::Vec3 | getViewPoint () const |
virtual float | getDistanceToEyePoint (const Vec3 &, bool) const |
virtual float | getDistanceFromEyePoint (const Vec3 &, bool) const |
virtual float | getDistanceToViewPoint (const Vec3 &, bool) const |
virtual void | apply (Drawable &drawable) |
virtual void | apply (Geometry &geometry) |
virtual void | apply (Node &node) |
virtual void | apply (Geode &node) |
virtual void | apply (Billboard &node) |
virtual void | apply (Group &node) |
virtual void | apply (ProxyNode &node) |
virtual void | apply (Projection &node) |
virtual void | apply (CoordinateSystemNode &node) |
virtual void | apply (ClipNode &node) |
virtual void | apply (TexGenNode &node) |
virtual void | apply (LightSource &node) |
virtual void | apply (Transform &node) |
virtual void | apply (Camera &node) |
virtual void | apply (CameraView &node) |
virtual void | apply (MatrixTransform &node) |
virtual void | apply (PositionAttitudeTransform &node) |
virtual void | apply (AutoTransform &node) |
virtual void | apply (Switch &node) |
virtual void | apply (Sequence &node) |
virtual void | apply (LOD &node) |
virtual void | apply (PagedLOD &node) |
virtual void | apply (ClearNode &node) |
virtual void | apply (OccluderNode &node) |
virtual void | apply (OcclusionQueryNode &node) |
void | setDatabaseRequestHandler (DatabaseRequestHandler *handler) |
DatabaseRequestHandler * | getDatabaseRequestHandler () |
const DatabaseRequestHandler * | getDatabaseRequestHandler () const |
void | setImageRequestHandler (ImageRequestHandler *handler) |
ImageRequestHandler * | getImageRequestHandler () |
const ImageRequestHandler * | getImageRequestHandler () const |
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Object () | |
Object (bool threadSafeRefUnref) | |
Object (const Object &, const CopyOp ©op=CopyOp::SHALLOW_COPY) | |
virtual Object * | cloneType () const =0 |
virtual Object * | clone (const CopyOp &) const =0 |
virtual bool | isSameKindAs (const Object *) const |
virtual const char * | libraryName () const =0 |
virtual const char * | className () const =0 |
std::string | getCompoundClassName () const |
virtual Node * | asNode () |
virtual const Node * | asNode () const |
virtual NodeVisitor * | asNodeVisitor () |
virtual StateSet * | asStateSet () |
virtual const StateSet * | asStateSet () const |
virtual StateAttribute * | asStateAttribute () |
virtual const StateAttribute * | asStateAttribute () const |
virtual Uniform * | asUniform () |
virtual const Uniform * | asUniform () const |
virtual Camera * | asCamera () |
virtual const Camera * | asCamera () const |
virtual Drawable * | asDrawable () |
virtual const Drawable * | asDrawable () const |
virtual Callback * | asCallback () |
virtual const Callback * | asCallback () const |
virtual CallbackObject * | asCallbackObject () |
virtual const CallbackObject * | asCallbackObject () const |
virtual UserDataContainer * | asUserDataContainer () |
virtual const UserDataContainer * | asUserDataContainer () const |
virtual ValueObject * | asValueObject () |
virtual const ValueObject * | asValueObject () const |
virtual Image * | asImage () |
virtual const Image * | asImage () const |
virtual void | setThreadSafeRefUnref (bool threadSafe) |
virtual void | setName (const std::string &name) |
void | setName (const char *name) |
const std::string & | getName () const |
void | setDataVariance (DataVariance dv) |
DataVariance | getDataVariance () const |
virtual void | computeDataVariance () |
void | setUserDataContainer (osg::UserDataContainer *udc) |
template<class T > | |
void | setUserDataContainer (const ref_ptr< T > &udc) |
osg::UserDataContainer * | getUserDataContainer () |
const osg::UserDataContainer * | getUserDataContainer () const |
osg::UserDataContainer * | getOrCreateUserDataContainer () |
virtual void | setUserData (Referenced *obj) |
template<class T > | |
void | setUserData (const ref_ptr< T > &ud) |
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) |
virtual void | resizeGLObjectBuffers (unsigned int) |
virtual void | releaseGLObjects (osg::State *=0) const |
template<typename T > | |
BoolValueObject UCharValueObject UShortValueObject UIntValueObject DoubleValueObject Vec3fValueObject Vec2dValueObject Vec4dValueObject PlaneValueObject MatrixdValueObject BoundingBoxdValueObject BoundingSpheredValueObject bool | getUserValue (const std::string &name, T &value) const |
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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 Attributes | |
VisitorType | _visitorType |
unsigned int | _traversalNumber |
ref_ptr< FrameStamp > | _frameStamp |
TraversalMode | _traversalMode |
Node::NodeMask | _traversalMask |
Node::NodeMask | _nodeMaskOverride |
NodePath | _nodePath |
ref_ptr< DatabaseRequestHandler > | _databaseRequestHandler |
ref_ptr< ImageRequestHandler > | _imageRequestHandler |
osg::ref_ptr< ValueMap > | _valueMap |
osg::ref_ptr< ValueStack > | _valueStack |
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std::string | _name |
DataVariance | _dataVariance |
osg::UserDataContainer * | _userDataContainer |
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OpenThreads::AtomicPtr | _observerSet |
OpenThreads::Atomic | _refCount |
Additional Inherited Members | |
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static OpenThreads::Mutex * | getGlobalReferencedMutex () |
static void | setDeleteHandler (DeleteHandler *handler) |
static DeleteHandler * | getDeleteHandler () |
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virtual | ~Object () |
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virtual | ~Referenced () |
void | signalObserversAndDelete (bool signalDelete, bool doDelete) const |
void | deleteUsingDeleteHandler () const |
Visitor for type safe operations on osg::Nodes. Based on GOF's Visitor pattern. The NodeVisitor is useful for developing type safe operations to nodes in the scene graph (as per Visitor pattern), and adds to this support for optional scene graph traversal to allow operations to be applied to whole scenes at once. The Visitor pattern uses a technique of double dispatch as a mechanism to call the appropriate apply(..) method of the NodeVisitor. To use this feature one must use the Node::accept(NodeVisitor) which is extended in each Node subclass, rather than the NodeVisitor apply directly. So use root->accept(myVisitor); instead of myVisitor.apply(*root). The later method will bypass the double dispatch and the appropriate NodeVisitor::apply(..) method will not be called.
osg::NodeVisitor::NodeVisitor | ( | TraversalMode | tm = TRAVERSE_NONE | ) |
osg::NodeVisitor::NodeVisitor | ( | VisitorType | type, |
TraversalMode | tm = TRAVERSE_NONE |
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osg::NodeVisitor::NodeVisitor | ( | const NodeVisitor & | nv, |
const osg::CopyOp & | copyop = osg::CopyOp::SHALLOW_COPY |
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Reimplemented in osgUtil::Optimizer::MergeGeometryVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, osgUtil::Optimizer::FlattenBillboardVisitor, osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsVisitor, osgGA::EventVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osgUtil::IntersectionVisitor, osgUtil::PickVisitor, and osgUtil::CullVisitor.
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Reimplemented in osgUtil::CullVisitor.
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Reimplemented in osgUtil::CullVisitor.
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Reimplemented in osgUtil::IntersectVisitor, osg::ComputeBoundsVisitor, osgGA::EventVisitor, osgUtil::CullVisitor, osgUtil::GLObjectsVisitor, osgUtil::StateToCompile, osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsVisitor, osgUtil::Optimizer::StaticObjectDetectionVisitor, osgUtil::StatsVisitor, osgUtil::UpdateVisitor, and osgUtil::Optimizer::TextureAtlasVisitor.
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Reimplemented in osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, osgUtil::Optimizer::SpatializeGroupsVisitor, osgAnimation::LinkVisitor, osgGA::EventVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, osgUtil::StatsVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osg::KdTreeBuilder, osgUtil::DrawElementTypeSimplifierVisitor, osgUtil::GeometryCollector, osgUtil::VertexCacheMissVisitor, osgUtil::Optimizer::TessellateVisitor, osgUtil::Optimizer::MakeFastGeometryVisitor, osgUtil::Simplifier, osgUtil::SmoothingVisitor, osgUtil::TriStripVisitor, osg::ConfigureBufferObjectsVisitor, and osgUtil::Optimizer::BufferObjectVisitor.
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Reimplemented in osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, osgUtil::Optimizer::RemoveEmptyNodesVisitor, osgUtil::Optimizer::RemoveRedundantNodesVisitor, osgUtil::Optimizer::MergeGeodesVisitor, osgUtil::Optimizer::MergeGeometryVisitor, osgUtil::Optimizer::SpatializeGroupsVisitor, osgGA::EventVisitor, osgSim::InsertImpostorsVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, osgUtil::StatsVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osgGA::EventVisitor, osgUtil::CullVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, osgUtil::Optimizer::CombineLODsVisitor, osg::CollectOccludersVisitor, osgGA::EventVisitor, osgSim::InsertImpostorsVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, osgUtil::StatsVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osgUtil::Optimizer::CombineStaticTransformsVisitor.
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Reimplemented in osg::CollectOccludersVisitor, osgAnimation::BoneMapVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, osgUtil::Optimizer::FlattenStaticTransformsVisitor, osgAnimation::LinkVisitor, osgDB::SharedStateManager, osgGA::EventVisitor, osgSim::InsertImpostorsVisitor, osgUtil::DisplayRequirementsVisitor, osgUtil::GLObjectsVisitor, osgUtil::StateToCompile, osgUtil::IntersectionVisitor, osgUtil::Optimizer::StateVisitor, osgUtil::Optimizer::CopySharedSubgraphsVisitor, osgUtil::Optimizer::TextureVisitor, osgUtil::Optimizer::TextureAtlasVisitor, osgUtil::Optimizer::StaticObjectDetectionVisitor, osgUtil::PrintVisitor, osgUtil::ShaderGenVisitor, osgUtil::StatsVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osg::CollectOccludersVisitor, osgGA::EventVisitor, osgUtil::CullVisitor, and osgUtil::UpdateVisitor.
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Reimplemented in osgUtil::CullVisitor.
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Reimplemented in osgUtil::IntersectionVisitor, and osgUtil::Optimizer::FlattenStaticTransformsVisitor.
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Reimplemented in osgUtil::CullVisitor.
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Reimplemented in osg::CollectOccludersVisitor, osgAnimation::BoneMapVisitor, osgAnimation::RigGeometry::FindNearestParentSkeleton, osgGA::EventVisitor, osgUtil::CullVisitor, osgUtil::IntersectVisitor, osgUtil::StatsVisitor, osgUtil::UpdateVisitor, osg::ComputeBoundsVisitor, osgUtil::IntersectionVisitor, osgUtil::Optimizer::FlattenStaticTransformsVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, and osgUtil::Optimizer::RemoveRedundantNodesVisitor.
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Convert 'this' into a osg::CullStack pointer if Object is a osg::CullStack, otherwise return 0. Equivalent to dynamic_cast<osg::CullStack*>(this).
Reimplemented in osgUtil::CullVisitor.
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convert 'const this' into a const osg::CullStack pointer if Object is a osg::CullStack, otherwise return 0. Equivalent to dynamic_cast<const osg::CullStack*>(this).
Reimplemented in osgUtil::CullVisitor.
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Convert 'this' into a osgUtil::CullVisitor pointer if Object is a osgUtil::CullVisitor, otherwise return 0. Equivalent to dynamic_cast<osgUtil::CullVisitor*>(this).
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convert 'const this' into a const osgUtil::CullVisitor pointer if Object is a osgUtil::CullVisitor, otherwise return 0. Equivalent to dynamic_cast<const osgUtil::CullVisitor*>(this).
Reimplemented in osgUtil::CullVisitor.
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Convert 'this' into a osgGA::EventVisitor pointer if Object is a osgGA::EventVisitor, otherwise return 0. Equivalent to dynamic_cast<osgGA::EventVisitor*>(this).
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convert 'const this' into a const osgGA::EventVisitor pointer if Object is a osgGA::EventVisitor, otherwise return 0. Equivalent to dynamic_cast<const osgGA::EventVisitor*>(this).
Reimplemented in osgGA::EventVisitor.
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Convert 'this' into a osgUtil::IntersectionVisitor pointer if Object is a IntersectionVisitor, otherwise return 0. Equivalent to dynamic_cast<osgUtil::IntersectionVisitor*>(this).
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convert 'const this' into a const osgUtil::IntersectionVisitor pointer if Object is a IntersectionVisitor, otherwise return 0. Equivalent to dynamic_cast<const osgUtil::IntersectionVisitor*>(this).
Reimplemented in osgUtil::IntersectionVisitor.
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convert 'const this' into a const NodeVisitor pointer if Object is a NodeVisitor, otherwise return 0. Equivalent to dynamic_cast<const NodeVisitor*>(this).
Reimplemented from osg::Object.
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Convert 'this' into a osgUtil::UpdateVisitor pointer if Object is a osgUtil::UpdateVisitor, otherwise return 0. Equivalent to dynamic_cast<osgUtil::UpdateVisitor*>(this).
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convert 'const this' into a const osgUtil::UpdateVisitor pointer if Object is a osgUtil::UpdateVisitor, otherwise return 0. Equivalent to dynamic_cast<const osgUtil::UpdateVisitor*>(this).
Reimplemented in osgUtil::UpdateVisitor.
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Get the handler for database requests.
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Get the const handler for database requests.
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Get the distance of a point from the eye point, distance value in the eye coordinate system. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement. If the getDistanceFromEyePoint(pos) is not implemented than a default value of 0.0 is returned.
Reimplemented in osgUtil::CullVisitor, and osg::CollectOccludersVisitor.
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Get the distance from a point to the eye point, distance value in local coordinate system. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement. If the getDistanceFromEyePoint(pos) is not implemented then a default value of 0.0 is returned.
Reimplemented in osgUtil::CullVisitor, osgUtil::IntersectionVisitor, osgUtil::IntersectVisitor, and osg::CollectOccludersVisitor.
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Get the distance from a point to the view point, distance value in local coordinate system. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement. If the getDistanceToViewPoint(pos) is not implemented then a default value of 0.0 is returned.
Reimplemented in osgUtil::CullVisitor, and osg::CollectOccludersVisitor.
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Get the eye point in local coordinates. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.
Reimplemented in osgUtil::CullVisitor, osgUtil::IntersectionVisitor, and osgUtil::IntersectVisitor.
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Get the FrameStamp that this traversal is associated with.
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Get the handler for image requests.
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Get the const handler for image requests.
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Get the NodeMaskOverride mask.
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Get the non const NodePath from the top most node applied down to the current Node being visited.
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Get the const NodePath from the top most node applied down to the current Node being visited.
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Get the ValueStack.
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Get the TraversalMask.
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Get the traversal mode.
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Get the traversal number. Typically used to denote the frame count.
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Get the ValueStack.
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Get the const ValueStack.
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Get the view point in local coordinates. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.
Reimplemented in osgUtil::CullVisitor.
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Get the VisitorType.
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Convert 'this' into a NodeVisitor pointer if Object is a NodeVisitor, otherwise return 0. Equivalent to dynamic_cast<NodeVisitor*>(this).
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Method called by osg::Node::accept() method after a call to NodeVisitor::apply(..). Note, the user does not typically call popFromNodePath() as it will be called automatically by the Node::accept() method.
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Method called by osg::Node::accept() method before a call to the NodeVisitor::apply(..). The back of the list will, therefore, be the current node being visited inside the apply(..), and the rest of the list will be the parental sequence of nodes from the top most node applied down the graph to the current node. Note, the user does not typically call pushNodeOnPath() as it will be called automatically by the Node::accept() method.
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Method to call to reset visitor. Useful if your visitor accumulates state during a traversal, and you plan to reuse the visitor. To flush that state for the next traversal: call reset() prior to each traversal.
Reimplemented in osg::CollectOccludersVisitor, osgAnimation::LinkVisitor, osgGA::EventVisitor, osgSim::InsertImpostorsVisitor, osgUtil::CullVisitor, osgUtil::IntersectionVisitor, osgUtil::GeometryCollector, osgUtil::VertexCacheMissVisitor, osgUtil::Optimizer::FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor, osgUtil::Optimizer::StateVisitor, osgUtil::Optimizer::FlattenBillboardVisitor, osgUtil::Optimizer::TextureAtlasVisitor, and osgUtil::UpdateVisitor.
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Set the handler for database requests.
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Set the FrameStamp that this traversal is associated with.
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Set the handler for image requests.
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Set the NodeMaskOverride mask. Used in validNodeMask() to determine whether to operate on a node or its subgraph, by OR'ing NodeVisitor::_nodeMaskOverride with the Node's own Node::_nodeMask. Typically used to force on nodes which may have been switched off by their own Node::_nodeMask.
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Set the TraversalMask of this NodeVisitor. The TraversalMask is used by the NodeVisitor::validNodeMask() method to determine whether to operate on a node and its subgraph. validNodeMask() is called automatically in the Node::accept() method before any call to NodeVisitor::apply(), apply() is only ever called if validNodeMask returns true. Note, if NodeVisitor::_traversalMask is 0 then all operations will be switched off for all nodes. Whereas setting both _traversalMask and _nodeMaskOverride to 0xffffffff will allow a visitor to work on all nodes regardless of their own Node::_nodeMask state.
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Set the traversal mode for Node::traverse() to use when deciding which children of a node to traverse. If a NodeVisitor has been attached via setTraverseVisitor() and the new mode is not TRAVERSE_VISITOR then the attached visitor is detached. Default mode is TRAVERSE_NONE.
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Set the traversal number. Typically used to denote the frame count.
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Set the ValueMap used to store Values that can be reused over a series of traversals.
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Set the ValueStack used to stack Values during traversal.
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Set the VisitorType, used to distinguish different visitors during traversal of the scene, typically used in the Node::traverse() method to select which behaviour to use for different types of traversal/visitors.
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Method for handling traversal of a nodes. If you intend to use the visitor for actively traversing the scene graph then make sure the accept() methods call this method unless they handle traversal directly.
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Method to called by Node and its subclass' Node::accept() method, if the result is true it is used to cull operations of nodes and their subgraphs. Return true if the result of a bit wise and of the NodeVisitor::_traversalMask with the bit or between NodeVistor::_nodeMaskOverride and the Node::_nodeMask. default values for _traversalMask is 0xffffffff, _nodeMaskOverride is 0x0, and osg::Node::_nodeMask is 0xffffffff.
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