Qt Quick 3D - Simple Example

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import QtQuick 2.15
import QtQuick.Window 2.14
import QtQuick3D 1.15

Window {
    id: window
    width: 1280
    height: 720
    visible: true

    View3D {
        id: view
        anchors.fill: parent

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

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

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

        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
                }
            }
        }
    }
}