Qt Quick 3D - 简单范例

演示如何在 Qt Quick 3D 中渲染简单场景。

简单 demonstrates how to render a scene in Qt Quick 3D.

设置场景

我们设置整个场景在 main.qml 文件。

为能够使用类型在 QtQuick3D 模块，必须 import 它：

import QtQuick3D 1.15

First of all, we define the environment of our simple scene. We just clear the background color with 'skyblue' in this example.

environment: SceneEnvironment {
    clearColor: "skyblue"
    backgroundMode: SceneEnvironment.Color
}

And then, we define a camera which represents the viewport of the rendered scene. In this example, we use PerspectiveCamera which shows perspective viewport in a general 3D scene. Because we want to define some objects around origin, we move this camera to the rear position and rotate slightly.

PerspectiveCamera {
    position: Qt.vector3d(0, 200, 300)
    eulerRotation.x: -30
}

For the objects in the scene to be rendered correctly we need to add a light source, in this example we'll be using a DirectionalLight

DirectionalLight {
    eulerRotation.x: -30
    eulerRotation.y: -70
}

绘制简单对象

Now, we draw some built-in objects. In this example, we draw a red cylinder and a blue sphere using Model . However, just drawing objects is too simple, so we make a round plate with the red cylinder and add bouncing animation for the sphere.

Model {
    position: Qt.vector3d(0, -200, 0)
    source: "#Cylinder"
    scale: Qt.vector3d(2, 0.2, 1)
    materials: [ DefaultMaterial {
            diffuseColor: "red"
        }
    ]
}
Model {
    position: Qt.vector3d(0, 150, 0)
    source: "#Sphere"
    materials: [ DefaultMaterial {
            diffuseColor: "blue"
        }
    ]
    SequentialAnimation on y {
        loops: Animation.Infinite
        NumberAnimation {
            duration: 3000
            to: -150
            from: 150
            easing.type:Easing.InQuad
        }
        NumberAnimation {
            duration: 3000
            to: 150
            from: -150
            easing.type:Easing.OutQuad
        }
    }
}

文件：