QAspectEngine Class

(Qt3DCore::QAspectEngine)

Responsible for handling all the QAbstractAspect subclasses that have been registered with the scene. More...

Header: #include <Qt3DCore/QAspectEngine>
qmake: QT += 3dcore
Inherits: QObject

Public Functions

QAspectEngine(QObject *parent = nullptr)
~QAspectEngine()
QVector<QAbstractAspect *> aspects() const
QVariant executeCommand(const QString &command)
void registerAspect(QAbstractAspect *aspect)
void registerAspect(const QString &name)
QEntityPtr rootEntity() const
void setRootEntity(QEntityPtr root)
void unregisterAspect(QAbstractAspect *aspect)
void unregisterAspect(const QString &name)
  • 32 public functions inherited from QObject
typedef QEntityPtr

Additional Inherited Members

  • 1 property inherited from QObject
  • 1 public slot inherited from QObject
  • 2 signals inherited from QObject
  • 11 static public members inherited from QObject
  • 9 protected functions inherited from QObject

Detailed Description

Responsible for handling all the QAbstractAspect subclasses that have been registered with the scene.

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

QAspectEngine::QAspectEngine(QObject *parent = nullptr)

Constructs a new QAspectEngine with parent.

QAspectEngine::~QAspectEngine()

Destroys the engine.

QVector<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::registerAspect(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.

QEntityPtr QAspectEngine::rootEntity() const

Returns the root entity of the aspect engine.

See also setRootEntity().

void QAspectEngine::setRootEntity(QEntityPtr root)

Sets the root entity for the aspect engine.

See also rootEntity().

void QAspectEngine::unregisterAspect(QAbstractAspect *aspect)

Unregisters and deletes the given aspect.

void QAspectEngine::unregisterAspect(const QString &name)

Unregisters and deletes the aspect with the given name.

Related Non-Members

typedef Qt3DCore::QEntityPtr

A shared pointer for QEntity.

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