为什么我的场景为空?

我正试图用Javafx做一些3D工作(使用TornadFX库),但无法设置我的 PerspectiveCamera 到 Scene 作为 场景 null .

我这样启动我的程序:

class ThreeDTest : App(HomeView::class, ThreeDStyles::class) {
    override fun start(stage: Stage) {
        super.start(stage)
        stage.show()
        stage.scene.fill = Color.BLACK

        val primaryScreenBounds = Screen.getPrimary().visualBounds

        stage.maxWidth = 1920.0
        stage.maxHeight = 1080.0
        stage.minWidth = 1920.0
        stage.minHeight = 1080.0
    }
}

然后在 HomeView I类有:

class HomeView : View() {
    override val root = stackpane {
        val axisGroup = Xform()
        val world = Xform()
        val camera = PerspectiveCamera(true)
        val cameraXform = Xform()
        val cameraXform2 = Xform()
        val cameraXform3 = Xform()
        val cameraInitialDistance = -450.0
        val cameraInitialXAngle = 70.0
        val cameraInitialYAngle = 320.0
        val cameraNearClip = 0.1
        val cameraFarClip = 10000.0

        //just a builder class to add properties to the camera
        buildCamera(this, cameraXform, cameraXform2, cameraXform3, camera, cameraNearClip, cameraFarClip, cameraInitialDistance,
            cameraInitialYAngle, cameraInitialXAngle)
        buildAxes(axisGroup, world)

        println(scene)
        //returns null
        scene.camera = camera
        //this does not work as scene is null
}

我做错什么了吗?我不知道为什么 场景 如我所想为空 View 应该创造一个新的 场景 createPrimaryScene 函数,并将代码移动到 init 在 HomeView 查看两者都没有成功。

有什么想法吗?把头发拔出来。

(哦,另一个不相关的问题是,坦率地说,在TornadFX中拥有3D支持将使我的 一生