启用或禁用框架图形节点的整个子树。 更多...
头: | #include <QSubtreeEnabler> |
CMake: |
find_package(Qt6 REQUIRED COMPONENTS 3drender)
target_link_libraries(mytarget PRIVATE Qt6::3drender) |
qmake: | QT += 3drender |
实例化: | SubtreeEnabler |
继承: | Qt3DRender::QFrameGraphNode |
enum | Enablement { Persistent, SingleShot } |
Qt3DRender::QSubtreeEnabler::Enablement | enablement () const |
void | requestUpdate () |
void | setEnablement (Qt3DRender::QSubtreeEnabler::Enablement enablement ) |
void | enablementChanged (Qt3DRender::QSubtreeEnabler::Enablement enablement ) |
While QFrameGraphNodes can be individually enabled and disabled via the
被启用
property, this can become tedious when an entire path needs to be turned on or off. QSubtreeEnabler is a convenience node that makes this use case trivial, allowing all of its children to be controlled by a single switch.
QSubtreeEnabler is enabled by default.
Specifies whether subtree enablement is persistent or transient.
常量 | 值 | 描述 |
---|---|---|
Qt3DRender::QSubtreeEnabler::Persistent
|
0
|
The value of enabled is persistent. This is the default. |
Qt3DRender::QSubtreeEnabler::SingleShot
|
1
|
The value of enabled will last for a single frame and then be reset to false. This might be used for a subtree drawing to an FBO, for example, to only update the FBO when the relevant portions of the scene changed. |
控制子树启用是持久还是瞬时。
访问函数:
Qt3DRender::QSubtreeEnabler::Enablement | enablement () const |
void | setEnablement (Qt3DRender::QSubtreeEnabler::Enablement enablement ) |
通知程序信号:
void | enablementChanged (Qt3DRender::QSubtreeEnabler::Enablement enablement ) |
[invokable]
void
QSubtreeEnabler::
requestUpdate
()
Requests that the subtree be enabled.
方便方法旨在用于
SingleShot
enablement.
注意: 此函数可以被援引,通过元对象系统和从 QML。见 Q_INVOKABLE .