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QAbstractAspect Class

class Qt3DCore::QAbstractAspect

QAbstractAspect is the base class for aspects that provide a vertical slice of behavior. More...

Header: #include <Qt3DCore/QAbstractAspect>
CMake: find_package(Qt6 REQUIRED COMPONENTS 3DCore)
target_link_libraries(mytarget PRIVATE Qt6::3DCore)
qmake: QT += 3dcore
Inherits: QObject
Inherited By:

Qt3DAnimation::QAnimationAspect, Qt3DInput::QInputAspect, Qt3DLogic::QLogicAspect, and Qt3DRender::QRenderAspect

Public Functions

QAbstractAspect(QObject *parent = nullptr)

Protected Functions

void registerBackendType(const Qt3DCore::QBackendNodeMapperPtr &functor)
void registerBackendType(const QMetaObject &obj, const Qt3DCore::QBackendNodeMapperPtr &functor)
Qt3DCore::QNodeId rootEntityId() const
QAspectJobPtr
QBackendNodeMapperPtr

Macros

QT3D_REGISTER_ASPECT(name, AspectType)

Detailed Description

Member Function Documentation

[explicit] QAbstractAspect::QAbstractAspect(QObject *parent = nullptr)

Constructs a new QAbstractAspect with parent

[protected] template <typename Frontend> void QAbstractAspect::registerBackendType(const Qt3DCore::QBackendNodeMapperPtr &functor)

Registers backend with functor.

[protected] void QAbstractAspect::registerBackendType(const QMetaObject &obj, const Qt3DCore::QBackendNodeMapperPtr &functor)

Registers backend with obj and functor.

[protected] Qt3DCore::QNodeId QAbstractAspect::rootEntityId() const

Returns root entity node id.

Related Non-Members

QAspectJobPtr

A shared pointer for QAspectJob.

QBackendNodeMapperPtr

A shared pointer for QBackendNodeMapper.

Macro Documentation

QT3D_REGISTER_ASPECT(name, AspectType)

Convenience macro for registering AspectType for instantiation by the currently set Qt3DCore::QAspectFactory. This makes it possible to create an instance of AspectType in the aspect thread by later passing name to Qt3DCore::QAspectEngine::registerAspect(const QString &name).

Note: It is also possible to register a new aspect without using this macro by instead using Qt3DCore::QAspectEngine::registerAspect(QAbstractAspect *aspect) which will handle moving a previously created aspect instance to the aspect thread context.

KDAB has published a few articles about writing custom Qt3D aspects on their blog. These provide an excellent starting point if you wish to learn more about it.

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