在Qt Qml中围绕特定轴旋转.stl文件

import Qt3D.Core 2.15
import Qt3D.Render 2.15
import Qt3D.Input 2.15
import Qt3D.Extras 2.15

Entity {
    id: sceneRoot

    components: [
        RenderSettings {
            activeFrameGraph: ForwardRenderer {
                clearColor: "transparent"
            }
        }
    ]

    Camera {
        id: camera
        projectionType: CameraLens.PerspectiveProjection
        fieldOfView: 45
        aspectRatio: sceneView.width / sceneView.height
        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
    }
    
    Viewport {
        id: sceneView
        camera: camera
        width: 800
        height: 600
        MouseDevice {}
        defaultFrameGraph: ForwardRenderer {
            clearColor: "transparent"
        }
    }
}

Entity {
    id: stlEntity

    STLMesh {
        id: stlMesh
        source: "path/to/your/file.stl"
    }

    Transform {
        id: transform
        property real angle: 0
        property real rotationSpeed: 30 // 每秒旋转的角度

        // 绕Y轴旋转
        rotation: Qt.angleAxis(angle, Qt.vector3d(0, 1, 0))

        MatrixUtils {
            id: matrixUtils
        }

        onAngleChanged: {
            // 更新旋转角度
            transform.rotation = matrixUtils.rotationY(angle)
        }

        Timer {
            interval: 1000 / rotationSpeed // 每秒更新一次角度
            running: true
            repeat: true

            onTriggered: {
                transform.angle += 1 // 每次增加1度
            }
        }
    }

    components: [
        stlMesh,
        transform
    ]
}