Public Types

enum LayerFlag : quint32 {
LayerNone = 0x0 , Layer0 = 0x1 , Layer1 = 0x2 , Layer2 = 0x4 ,
Layer3 = 0x8 , Layer4 = 0x10 , Layer5 = 0x20 , Layer6 = 0x40 ,
Layer7 = 0x80 , Layer8 = 0x100 , Layer9 = 0x200 , Layer10 = 0x400 ,
Layer11 = 0x800 , Layer12 = 0x1000 , Layer13 = 0x2000 , Layer14 = 0x4000 ,
Layer15 = 0x8000 , Layer16 = 0x10000 , Layer17 = 0x20000 , Layer18 = 0x40000 ,
Layer19 = 0x80000 , Layer20 = 0x100000 , Layer21 = 0x200000 , Layer22 = 0x400000 ,
Layer23 = 0x800000 , LayerAll = 0xFFFFFF , Layer24 = 0x1000000 , Layer25 = 0x2000000 ,
Layer26 = 0x4000000 , Layer27 = 0x8000000 , Layer28 = 0x10000000 , Layer29 = 0x20000000 ,
Layer30 = 0x40000000 , Layer31 = 0x80000000 , ReservedLayerMask = 0xFF000000
}

Public Member Functions
	QQuick3DContentLayer (QObject *parent=nullptr)
	\qmltype ContentLayer \inqmlmodule QtQuick3D
	~QQuick3DContentLayer () override
Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.
virtual	~QObject ()
	Destroys the object, deleting all its child objects.
virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.
virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.
QString	objectName () const
Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.
void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
QBindable< QString >	bindableObjectName ()
bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.
bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.
bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.
bool	isQmlExposed () const noexcept
	Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.
bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
QThread *	thread () const
	Returns the thread in which the object lives.
bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.
int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
void	killTimer (int id)
	Kills the timer with timer identifier, id.
void	killTimer (Qt::TimerId id)
template<typename T>
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
template<typename T>
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
template<typename T>
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
template<typename T>
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
const QObjectList &	children () const
	Returns a list of child objects.
void	setParent (QObject *parent)
	Makes the object a child of parent.
void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.
void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.
QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const
bool	disconnect (const QObject receiver, const char member=nullptr) const
void	dumpObjectTree () const
	Dumps a tree of children to the debug output.
void	dumpObjectInfo () const
	Dumps information about signal connections, etc.
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.
bool	setProperty (const char *name, QVariant &&value)
QVariant	property (const char *name) const
	Returns the value of the object's name property.
QList< QByteArray >	dynamicPropertyNames () const
QBindingStorage *	bindingStorage ()
const QBindingStorage *	bindingStorage () const
QObject *	parent () const
	Returns a pointer to the parent object.
bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe
Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.
Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe
static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe
static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)
static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.
template<typename Func1, typename Func2>
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)
template<typename Func1>
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)
Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
int	senderSignalIndex () const
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.
bool	isSignalConnected (const QMetaMethod &signal) const
virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.
virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.
virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	disconnectNotify (const QMetaMethod &signal)
	QObject (QObjectPrivate &dd, QObject *parent=nullptr)
Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Properties inherited from QObject
QString	objectName
	the name of this object
Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 28 of file qquick3dcontentlayer_p.h.

Member Enumeration Documentation

◆ LayerFlag

enum QQuick3DContentLayer::LayerFlag : quint32

Enumerator
LayerNone
Layer0
Layer1
Layer2
Layer3
Layer4
Layer5
Layer6
Layer7
Layer8
Layer9
Layer10
Layer11
Layer12
Layer13
Layer14
Layer15
Layer16
Layer17
Layer18
Layer19
Layer20
Layer21
Layer22
Layer23
LayerAll
Layer24
Layer25
Layer26
Layer27
Layer28
Layer29
Layer30
Layer31
ReservedLayerMask

Definition at line 38 of file qquick3dcontentlayer_p.h.

Constructor & Destructor Documentation

◆ QQuick3DContentLayer()

QT_BEGIN_NAMESPACE QQuick3DContentLayer::QQuick3DContentLayer ( QObject * parent = nullptr )

explicit

\qmltype ContentLayer \inqmlmodule QtQuick3D

Since: 6.11

Singleton providing layer flag constants for grouping and filtering scene nodes.

ContentLayer is a singleton that exposes the LayerFlag enumeration, which provides bit flag constants for assigning nodes to named content layers. Layers can be used to group scene nodes together or to filter which nodes are rendered by a camera.

The predefined layer names are not necessarily descriptive for specific use cases. You can define your own semantic layer names by aliasing the \l ContentLayer values. For example, in a city scene with buildings, streets, and vehicles:

\qml readonly property int layerBuildings: ContentLayer.Layer1 readonly property int layerStreets: ContentLayer.Layer2 readonly property int layerVehicles: ContentLayer.Layer3 | ContentLayer.Layer4 \endqml

Once defined, assign these flags to nodes via \l {Node::layers}{Node.layers} and set the matching flags on a \l Camera to control which layers it renders.

See also: {Qt Quick 3D - Layers Example}{Layers Example}

Note: Some layers have special meanings:

\table \header

Layer
Description \row
LayerNone
No layer assigned. Nodes with this value do not belong to any layer and are not rendered. \row
Layer0
The default main layer. Nodes are assigned to this layer by default. \row
Layer1–Layer23
Freely assignable user layers for grouping nodes by purpose or functionality. \row
Layer24 and above
Reserved for internal use by Qt Quick 3D. \row
LayerAll
Matches all layers; nodes with this value are rendered by every camera. \endtable

Note: Layers are bit flags and can be combined with the | operator.; ContentLayer is a singleton and is not intended to be instantiated directly.

Definition at line 63 of file qquick3dcontentlayer.cpp.

◆ ~QQuick3DContentLayer()

QQuick3DContentLayer::~QQuick3DContentLayer ( )

override

Definition at line 69 of file qquick3dcontentlayer.cpp.

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

qtquick3d/src/quick3d/qquick3dcontentlayer_p.h (b027d2e8e3e8c21121d731c69ee6f399405cb0b6)
qtquick3d/src/quick3d/qquick3dcontentlayer.cpp (019ea91b71e8d709c32f0fa38b23e9242156e9ef)