Qt 3D: Simple QML Example

A QML application that demonstrates how to render a scene in Qt 3D.

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The Qt Company Ltd.

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Publié le 27 décembre 2024 - Mis à jour le 27 décembre 2024

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Qt 3D: Simple QML Example▲

Simple demonstrates how to render a scene in Qt 3D.

Running the Example▲

To run the example from http://, open the Welcome mode and select the example from Examples. For more information, visit http://.

Setting Up the Scene▲

We set up the entire scene in the main.qml file.

To be able to use the types in the Q3D and Q3D Render modules, we must import the modules:

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import Qt3D.Core 2.0
import Qt3D.Render 2.0

The first entities we create are a https://, 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:

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    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
    }

A https:// entity specifies a https:// as the active framegraph:

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    components: [
        RenderSettings {
            activeFrameGraph: ForwardRenderer {
                clearColor: Qt.rgba(0, 0.5, 1, 1)
                camera: camera
            }
        },

The event source is set by the Qt3DQuickWindow:

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        InputSettings { }

List of Files▲

Files:

List of Files▲

simple-qml/main.cpp
simple-qml/main.qml
simple-qml/simple-qml.pro
simple-qml/simple-qml.qrc

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