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<td >Qt 5.12</td><td ><a href="qt3d-index.html">Qt 3D</a></td><td >Qt 3D: Simple QML Example</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qt3d-index.html">Qt 5.12.2 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#running-the-example">Running the Example</a></li>
<li class="level1"><a href="#setting-up-the-scene">Setting Up the Scene</a></li>
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<h1 class="title">Qt 3D: Simple QML Example</h1>
<span class="subtitle"></span>
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<p>A QML application that demonstrates how to render a scene in Qt 3D.</p>
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<div class="descr"> <a name="details"></a>
<p class="centerAlign"><img src="images/simple-qml.png" alt="" /></p><p><i>Simple</i> demonstrates how to render a scene in Qt 3D.</p>
<a name="running-the-example"></a>
<h2 id="running-the-example">Running the Example</h2>
<p>To run the example from Qt Creator, open the <b>Welcome</b> mode and select the example from <b>Examples</b>. For more information, visit Building and Running an Example.</p>
<a name="setting-up-the-scene"></a>
<h2 id="setting-up-the-scene">Setting Up the Scene</h2>
<p>We set up the entire scene in the <i>main.qml</i> file.</p>
<p>To be able to use the types in the Q3D and Q3D Render modules, we must import the modules:</p>
<pre class="cpp">
import Qt3D.Core 2.0
import Qt3D.Render 2.0
</pre>
<p>The first entities we create are a <a href="qml-qt3d-render-camera.html">Camera</a>, which represents the camera used for the final rendering, and a camera controller, which allows us to control this camera using the keyboard or the mouse:</p>
<pre class="cpp">
Camera {
id: camera
projectionType: CameraLens.PerspectiveProjection
fieldOfView: 45
aspectRatio: 16/9
nearPlane : 0.1
farPlane : 1000.0
position: Qt.vector3d( 0.0, 0.0, -40.0 )
upVector: Qt.vector3d( 0.0, 1.0, 0.0 )
viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )
}
OrbitCameraController {
camera: camera
}
</pre>
<p>A <a href="qml-qt3d-render-rendersettings.html">RenderSettings</a> entity specifies a <a href="qml-qt3d-extras-forwardrenderer.html">ForwardRenderer</a> as the active framegraph:</p>
<pre class="cpp">
components: [
RenderSettings {
activeFrameGraph: ForwardRenderer {
clearColor: Qt.rgba(0, 0.5, 1, 1)
camera: camera
}
},
</pre>
<p>The event source is set by the Qt3DQuickWindow:</p>
<pre class="cpp">
InputSettings { }
</pre>
<p>Files:</p>
<ul>
<li><a href="qt3d-simple-qml-main-cpp.html">simple-qml/main.cpp</a></li>
<li><a href="qt3d-simple-qml-main-qml.html">simple-qml/main.qml</a></li>
<li><a href="qt3d-simple-qml-simple-qml-pro.html">simple-qml/simple-qml.pro</a></li>
<li><a href="qt3d-simple-qml-simple-qml-qrc.html">simple-qml/simple-qml.qrc</a></li>
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<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
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