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HdSceneIndexBase Class Referenceabstract

#include <sceneIndex.h>

+ Inheritance diagram for HdSceneIndexBase:

Public Member Functions

HD_API HdSceneIndexBase ()
 
HD_API ~HdSceneIndexBase () override
 
HD_API void AddObserver (const HdSceneIndexObserverPtr &observer)
 
HD_API void RemoveObserver (const HdSceneIndexObserverPtr &observer)
 
virtual HdSceneIndexPrim GetPrim (const SdfPath &primPath) const =0
 
virtual SdfPathVector GetChildPrimPaths (const SdfPath &primPath) const =0
 
HdDataSourceBaseHandle GetDataSource (const SdfPath &primPath, const HdDataSourceLocator &locator) const
 
HD_API void SystemMessage (const TfToken &messageType, const HdDataSourceBaseHandle &args)
 
HD_API std::string GetDisplayName () const
 
HD_API void SetDisplayName (const std::string &n)
 
HD_API void AddTag (const TfToken &tag)
 
HD_API void RemoveTag (const TfToken &tag)
 
HD_API bool HasTag (const TfToken &tag) const
 
HD_API TfTokenVector GetTags () const
 
- Public Member Functions inherited from TfRefBase
 TfRefBase ()
 
 TfRefBase (TfRefBase const &)
 
TfRefBaseoperator= (TfRefBase const &)
 
size_t GetCurrentCount () const
 Return the current reference count of this object. More...
 
bool IsUnique () const
 Return true if only one TfRefPtr points to this object. More...
 
void SetShouldInvokeUniqueChangedListener (bool shouldCall)
 
- Public Member Functions inherited from TfWeakBase
 TfWeakBase ()
 
 TfWeakBase (const TfWeakBase &)
 
const TfWeakBase__GetTfWeakBase__ () const
 
const TfWeakBaseoperator= (const TfWeakBase &)
 
void EnableNotification2 () const
 
TF_API void const * GetUniqueIdentifier () const
 

Protected Member Functions

HD_API void _SendPrimsAdded (const HdSceneIndexObserver::AddedPrimEntries &entries)
 
HD_API void _SendPrimsRemoved (const HdSceneIndexObserver::RemovedPrimEntries &entries)
 
HD_API void _SendPrimsDirtied (const HdSceneIndexObserver::DirtiedPrimEntries &entries)
 
HD_API void _SendPrimsRenamed (const HdSceneIndexObserver::RenamedPrimEntries &entries)
 
HD_API bool _IsObserved () const
 
virtual HD_API void _SystemMessage (const TfToken &messageType, const HdDataSourceBaseHandle &args)
 
- Protected Member Functions inherited from TfRefBase
virtual TF_API ~TfRefBase ()
 
- Protected Member Functions inherited from TfWeakBase
 ~TfWeakBase ()
 
TfRefPtr< Tf_Remnant_Register () const
 
template<class T >
TfRefPtr< Tf_Remnant_Register (T *tempRmnt) const
 
bool _HasRemnant () const
 

Additional Inherited Members

- Public Types inherited from TfRefBase
typedef void(* UniqueChangedFuncPtr )(TfRefBase const *, bool)
 
- Static Public Member Functions inherited from TfRefBase
static TF_API void SetUniqueChangedListener (UniqueChangedListener listener)
 

Detailed Description

Abstract interface to scene data. This class can be queried for scene data directly, and it can also register observers to be notified about scene changes (see HdSceneIndexObserver).

Definition at line 64 of file sceneIndex.h.

Constructor & Destructor Documentation

HD_API HdSceneIndexBase::HdSceneIndexBase ( )
HD_API HdSceneIndexBase::~HdSceneIndexBase ( )
override

Member Function Documentation

HD_API bool HdSceneIndexBase::_IsObserved ( ) const
protected

Returns whether the scene index has any registered observers; this information can be used to skip work preparing notices when there are no observers.

HD_API void HdSceneIndexBase::_SendPrimsAdded ( const HdSceneIndexObserver::AddedPrimEntries entries)
protected

Notify attached observers of prims added to the scene. The set of scene prims compiled from added/removed notices should match the set from a traversal based on GetChildPrimNames. Each prim has a path and type. It's possible for PrimsAdded to be called for prims that already exist; in that case, observers should be sure to update the prim type, in case it changed, and resync the prim. This function is not threadsafe; some observers expect it to be called from a single thread.

HD_API void HdSceneIndexBase::_SendPrimsDirtied ( const HdSceneIndexObserver::DirtiedPrimEntries entries)
protected

Notify attached observers of datasource invalidations from the scene. This message is not considered hierarchical on primPath; if /Path is dirtied, /Path/child is not necessarily dirtied. However, locators are considered hierarchical: if primvars is dirtied on a prim, primvars/color is considered dirtied as well. This function is not threadsafe; some observers expect it to be called from a single thread.

HD_API void HdSceneIndexBase::_SendPrimsRemoved ( const HdSceneIndexObserver::RemovedPrimEntries entries)
protected

Notify attached observers of prims removed from the scene. Note that this message is considered hierarchical: if /Path is removed, /Path/child is considered removed as well. This function is not threadsafe; some observers expect it to be called from a single thread.

HD_API void HdSceneIndexBase::_SendPrimsRenamed ( const HdSceneIndexObserver::RenamedPrimEntries entries)
protected

Notify attached observers of prims (and their descendents) which have been renamed or reparented. This function is not threadsafe; some observers expect it to be called from a single thread.

virtual HD_API void HdSceneIndexBase::_SystemMessage ( const TfToken messageType,
const HdDataSourceBaseHandle &  args 
)
protectedvirtual

Implement in order to react directly to system messages sent from downstream.

Reimplemented in HdGpGenerativeProceduralResolvingSceneIndex.

HD_API void HdSceneIndexBase::AddObserver ( const HdSceneIndexObserverPtr &  observer)

Adds an observer to this scene index. The given observer will be sent notices for prims added, removed, or dirtied after it is added as an observer. It will not be sent notices for prims already in the scene index; the calling code is responsible for updating observer state if the scene index has already been populated. This function is not threadsafe.

HD_API void HdSceneIndexBase::AddTag ( const TfToken tag)

Adds a specified tag token to a scene index instance. This is in service of user interfaces which want to filter views of a scene index chain or graph.

virtual SdfPathVector HdSceneIndexBase::GetChildPrimPaths ( const SdfPath primPath) const
pure virtual
HdDataSourceBaseHandle HdSceneIndexBase::GetDataSource ( const SdfPath primPath,
const HdDataSourceLocator locator 
) const
inline

A convenience function: look up the object at primPath, and if successful return the datasource at locator within that prim. This is equivalent to calling GetPrim(primPath), and then calling HdContainerDataSource::Get(prim.dataSource, locator).

Definition at line 116 of file sceneIndex.h.

HD_API std::string HdSceneIndexBase::GetDisplayName ( ) const

Returns a value previously set by SetDisplayName. If no value (or an empty string) was last set, this returns a symbol-demangled version of the class type itself. This is in service of user interfaces with views of scene index chains or graphs.

HD_API TfTokenVector HdSceneIndexBase::GetTags ( ) const

Returns all tag tokens currently added to a scene index instance. This is in service of user interfaces which want to filter views of a scene index chain or graph.

HD_API bool HdSceneIndexBase::HasTag ( const TfToken tag) const

Returns true if a specified tag token has been added to a scene index instance. This is in service of user interfaces which want to filter views of a scene index chain or graph.

HD_API void HdSceneIndexBase::RemoveObserver ( const HdSceneIndexObserverPtr &  observer)

Removes an observer from this scene index; the given observer will no longer be forwarded notices. Note that the observer won't get any notices as a result of being detached from this scene index. If observer is not registered on this scene index, this call does nothing. This function is not threadsafe.

HD_API void HdSceneIndexBase::RemoveTag ( const TfToken tag)

Removes a specified tag token to a scene index instance. This is in service of user interfaces which want to filter views of a scene index chain or graph.

HD_API void HdSceneIndexBase::SetDisplayName ( const std::string n)

Allows for scene index instances to be identified in a more contextually relevant way. This is in service of user interfaces with views of scene index chains or graphs.

HD_API void HdSceneIndexBase::SystemMessage ( const TfToken messageType,
const HdDataSourceBaseHandle &  args 
)

Sends a message with optional arguments to this and any upstream input scene indices. Scene indices may implement _SystemMessage to provide custom handling. See systemMessages.h for common message definitions.


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