QFrameAction Class

( Qt3DLogic::QFrameAction )

Provides a way to have a synchronous function executed each frame. 更多...

頭: #include <QFrameAction>
qmake: QT += 3dlogic
Since: Qt 5.5
實例化: FrameAction
繼承: Qt3DCore::QComponent

公共函數

QFrameAction (Qt3DCore::QNode * parent = nullptr)

信號

void triggered (float dt )

靜態公共成員

const QMetaObject staticMetaObject

額外繼承成員

詳細描述

Provides a way to have a synchronous function executed each frame.

The QFrameAction provides a way to perform tasks each frame in a synchronized way with the Qt3D backend. This is useful to implement some aspects of application logic and to prototype functionality that can later be folded into an additional Qt3D aspect.

例如, QFrameAction can be used to animate a property in sync with the Qt3D engine where a Qt Quick animation element is not perfectly synchronized and may lead to stutters in some cases.

To execute your own code each frame connect to the QFrameAction::triggered 信號。

成員函數文檔編製

QFrameAction:: QFrameAction ( Qt3DCore::QNode * parent = nullptr)

構造新的 QFrameAction instance with parent parent .

[signal] void QFrameAction:: triggered ( float dt )

This signal is emitted each frame with dt being the time (in seconds) since the last triggering.