<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qframeaction.cpp --> <title>FrameAction QML Type | Qt 3D 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qt3d-index.html">Qt 3D</a></td><td ><a href="qt3d-qml.html">QML Types</a></td><td >FrameAction QML Type</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qt3d-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#signals">Signals</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">FrameAction QML Type</h1> <span class="subtitle"></span> <!-- $$$FrameAction-brief --> <p>Provides a way to have a synchronous function executed each frame. <a href="#details">More...</a></p> <!-- @@@FrameAction --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import Qt3D.Logic 2.12</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.5</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Instantiates:</td><td class="memItemRight bottomAlign"> <a href="qml-qt3d-logic-frameaction.html"><a href="qt3dlogic-qframeaction.html">QFrameAction</a></td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <p><a href="qml-qt3d-core-component3d.html">Component3D</a></p> </td></tr></table></div><ul> <li><a href="qml-qt3d-logic-frameaction-members.html">List of all members, including inherited members</a></li> </ul> <a name="signals"></a> <h2 id="signals">Signals</h2> <ul> <li class="fn"><b><b><a href="qml-qt3d-logic-frameaction.html#triggered-signal">triggered</a></b></b>(real <i>dt</i>)</li> </ul> <!-- $$$FrameAction-description --> <a name="details"></a> <h2 id="details">Detailed Description</h2> <p>The <a href="qml-qt3d-logic-frameaction.html">FrameAction</a> 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.</p> <p>For example, the <a href="qml-qt3d-logic-frameaction.html">FrameAction</a> 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.</p> <p>To execute your own code each frame connect to the <a href="qml-qt3d-logic-frameaction.html#triggered-signal">FrameAction::triggered</a> signal.</p> <!-- @@@FrameAction --> <h2>Signal Documentation</h2> <!-- $$$triggered --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="triggered-signal"> <td class="tblQmlFuncNode"><p> <a name="triggered-signal"></a><span class="name">triggered</span>(<span class="type">real</span> <i>dt</i>)</p></td></tr> </table></div> </div><div class="qmldoc"><p>This signal is emitted each frame with <i>dt</i> being the time (in seconds) since the last triggering.</p> </div></div><!-- @@@triggered --> <br/> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>