QNode is the base class of all Qt3D node classes used to build a Qt3D scene. More...
| QNode(Qt3DCore::QNode *parent = nullptr) | |
| bool | blockNotifications(bool block) |
| Qt3DCore::QNodeVector | childNodes() const |
| Qt3DCore::QNodeId | id() const |
| bool | isEnabled() const |
| bool | notificationsBlocked() const |
| Qt3DCore::QNode * | parentNode() const |
| void | setEnabled(bool isEnabled) |
| void | setParent(Qt3DCore::QNode *parent) |
| void | enabledChanged(bool enabled) |
| void | nodeDestroyed() |
| void | parentChanged(QObject *parent) |
| QNodePtr | |
| QNodeVector | |
| Qt3DCore::QNodeId | qIdForNode(Qt3DCore::QNode *node) |
| Qt3DCore::QNodeIdVector | qIdsForNodes(const T &nodes) |
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.
The parent of a QNode instance can only be another QNode instance.
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.
See also QEntity and QComponent.
Holds the QNode enabled flag. By default a QNode is always enabled.
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.
Access functions:
| bool | isEnabled() const |
| void | setEnabled(bool isEnabled) |
Notifier signal:
| void | enabledChanged(bool enabled) |
Holds the immediate QNode parent, or null if the node has no parent.
Setting the parent will notify the backend aspects about current QNode instance's parent change.
Note: if parent happens to be null, this will actually notify that the current QNode instance was removed from the scene.
Access functions:
| Qt3DCore::QNode * | parentNode() const |
| void | setParent(Qt3DCore::QNode *parent) |
Notifier signal:
| void | parentChanged(QObject *parent) |
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().
[signal] void QNode::nodeDestroyed()Emitted when the node is destroyed.
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().
Returns a list filled with the QNode children of the current QNode instance.
Returns the id that uniquely identifies the QNode instance.
Returns true if aspect notifications are blocked; otherwise returns false. By default, notifications are not blocked.
See also blockNotifications().
[alias] QNodePtrA shared pointer for QNode.
[alias] QNodeVectorList of QNode pointers.
Returns node id for node.
Returns vector of node ids for nodes.
