QAspectEngine Class▲
-
Header: Qt3DCore/QAspectEngine
-
Since: Qt 5.7
-
CMake:
find_package(Qt6 REQUIRED COMPONENTS 3dcore)
target_link_libraries(mytarget PRIVATE Qt6::3dcore)
-
qmake: QT += 3dcore
-
Inherits: QObject
Detailed Description▲
The Qt3D run loop is controlled by the Qt3DRender::QAspectEngine.
Qt3DCore::QAbstractAspect subclasses can be registered by calling Qt3DCore::QAspectEngine::registerAspect() which will take care of registering the aspect and in turn that will call Qt3DCore::QAbstractAspect::onRegistered();
The simulation loop is launched as soon as a root Qt3DCore::QEntity is set on the Qt3DCore::QAspectEngine. This is followed by a call to onEngineStartup() on each aspect so that they can start their simulation work.
The simulation loop is stopped when the root entity is set to Qt3DCore::QEntityPtr(). This calls onEngineShutdown() on each aspect so that they can stop performing their simulation work.
Setting a new valid root entity would restart the simulation loop again.
Member Function Documentation▲
[explicit] QAspectEngine::QAspectEngine(QObject *parent = nullptr)▲
Constructs a new QAspectEngine with parent.
[virtual] QAspectEngine::~QAspectEngine()▲
Destroys the engine.
Qt3DCore::QAbstractAspect *QAspectEngine::aspect(const QString &name) const▲
Returns the asepect matching the name
Required that the aspect was registered by name
QList<Qt3DCore::QAbstractAspect *> QAspectEngine::aspects() const▲
Returns the aspects owned by the aspect engine.
QVariant QAspectEngine::executeCommand(const QString &command)▲
Executes the given command on aspect engine. Valid commands are:
-
"list aspects"
Returns the reply for the command.
void QAspectEngine::processFrame()▲
If using the manual run mode, this function executes the jobs for each aspect. It is blocking and won't return until all jobs have been completed.
If you are using the QRenderAspect,
void QAspectEngine::registerAspect(Qt3DCore::QAbstractAspect *aspect)▲
Registers a new aspect to the AspectManager. The QAspectEngine takes ownership of the aspect and will delete it when the aspect is unregistered.
void QAspectEngine::registerAspect(const QString &name)▲
Registers a new aspect to the AspectManager based on its name Uses the currently set aspect factory to create the actual aspect instance.
Qt3DCore::QEntityPtr QAspectEngine::rootEntity() const▲
void QAspectEngine::setRootEntity(Qt3DCore::QEntityPtr root)▲
void QAspectEngine::unregisterAspect(Qt3DCore::QAbstractAspect *aspect)▲
Unregisters and deletes the given aspect.
void QAspectEngine::unregisterAspect(const QString &name)▲
Unregisters and deletes the aspect with the given name.