|qmake:||QT += 3dcore|
|Inherited By:|| |
Qt3DCore::QComponent, Qt3DCore::QEntity, Qt3DInput::QAbstractPhysicalDevice, Qt3DInput::QAction, Qt3DInput::QActionInput, Qt3DInput::QAxis, Qt3DInput::QAxisInput, Qt3DInput::QAxisSetting, Qt3DInput::QLogicalDevice, Qt3DRender::QAbstractAttribute, Qt3DRender::QAbstractBuffer, Qt3DRender::QAbstractTextureImage, Qt3DRender::QAbstractTextureProvider, Qt3DRender::QAnnotation, Qt3DRender::QFrameGraphNode, Qt3DRender::QGeometry, and Qt3DRender::QParameterMapping
- 1 property inherited from QObject
|QNode(QNode *parent = Q_NULLPTR)|
|const QNodeId||id() const|
|QNode *||parentNode() const|
- 31 public functions inherited from QObject
- 1 public slot inherited from QObject
- 2 signals inherited from QObject
|virtual void||copy(const QNode *ref)|
|virtual void||sceneChangeEvent(const QSceneChangePtr &change)|
- 9 protected functions inherited from QObject
Static Protected Members
|QNode *||clone(QNode *node)|
Additional Inherited Members
- 11 static public members inherited from QObject
QNode is the base class of all Qt3D node classes used to build a Qt3D scene.
The owernship of QNode is determined by the QObject parent/child relationship between nodes. By itself, a QNode has no visual appearance and no particular meaning, it is there as a way of building a node based tree structure.
Each QNode instance has a unique id that allows it to be recognizable from other instances.
When properties are defined on a QNode subclass, their NOTIFY signal will automatically generate notifications that the Qt3D backend aspects will receive.
When subclassing QNode, make sure to call QNode::cleanup() from your subclass's destructor to ensure proper notification to backend aspects. Faiure to do so will result in crashes when one of your QNode subclass instance is eventually destroyed.
Member Function Documentation
QNode::QNode(QNode *parent = Q_NULLPTR)
Creates a new QNode instance with parent parent.
Note: The backend aspects will be notified that a QNode instance is part of the scene only if it has a parent; unless this is the root node of the Qt3D scene.
See also setParent().
Destroys the instance of QNode. The destructor is virtual.
If block is
true, property change notifications sent by this object to aspects are blocked. If block is
false, no such blocking will occur.
The return value is the previous value of notificationsBlocked().
Note that the other notification types will be sent even if the notifications for this object have been blocked.
See also notificationsBlocked().
QNodeList QNode::childrenNodes() const
This methods can only be called once and takes care of notyfing the backend aspects that the current Qt3DCore::QNode instance is about to be destroyed.
Note: It must be called by the destructor of every class subclassing QNode that is clonable (using the QT3D_CLONEABLE macro).
Returns a clone of node. All the children of node are cloned as well.
Note: This is the only way to create two nodes with the same id.
[virtual protected] void QNode::copy(const QNode *ref)
Copies all the attributes from ref to the current Qt3DCore::QNode instance.
const QNodeId QNode::id() const
Returns the id that uniquely identifies the QNode instance.
Returns whether the QNode is enabled or not.
Note: Getter function for property enabled.
true if aspect notifications are blocked; otherwise returns
false. By default, notifications are not blocked.
See also blockNotifications().
QNode *QNode::parentNode() const
Returns the immediate QNode parent, or null if the node has no parent.
Note: Getter function for property parent.
[virtual protected] void QNode::sceneChangeEvent(const QSceneChangePtr &change)
Note: the interpretation of what enabled means is aspect-dependent. Even if enabled is set to
false, some aspects may still consider the node in some manner. This is documented on a class by class basis.
Note: Setter function for property enabled.
See also isEnabled().
[virtual slot] void QNode::setParent(QNode *parent)
Note: if parent happens to be null, this will actually notify that the current QNode instance was removed from the scene.
Note: Setter function for property parent.
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