子类化SCNScene和SceneKit编辑器 [英] Subclassing SCNScene and SceneKit Editor

问题描述

我有一个带摄像机设置的SCNScene子类，我想在所有子类中使用。

I have SCNScene subclass with a camera setup, that I want to use in all the subclasses.

let scene01 = TheSubclassScene()
let scene02 = TheSubclassScene(named:"art.scnassets/testScene.scn")!
self.sceneArray.addObject(scene01)
self.sceneArray.addObject(scene02)

我想在运行时更改场景。当我在代码中创建场景但不使用SceneKit编辑器中的场景时，这个工作正常。所以 scene01 正在运作，但是 scene02 不是。在调试器中，我可以看到数组中的两个场景。一个是SCNSceneSubclass类型，但另一个是SCNScene类型。

I want to change the scenes at runtime. This works when I create the scene in code but not with a scene from the SceneKit Editor. So scene01 is working but scene02 isn't. In the debugger I can see the two scenes in the array. One is of type SCNSceneSubclass but the other is of type SCNScene.

有没有办法让这个工作？

Is there any way to get this working?

更新：
这是我的场景子类

Update: This is my scene subclass

class TheSubclassScene: SCNScene
{
    let cameraNode = CameraNode()

    override init()
    {
        super.init()
        self.rootNode.addChildNode(self.cameraNode)
    }

    required init?(coder aDecoder: NSCoder)
    {
        super.init(coder: aDecoder)
    }
}

推荐答案

我解决了这个问题。不好但是有效。我实例化一个 SCNScene（名为：art.scnassets / testScene.scn）然后我实例化一个 TheSubclassScene（）然后克隆场景的rootNode并将其作为子节点添加到子类场景中。

I have a workaround for that problem. Not nice but it works. I instantiate a SCNScene(named: "art.scnassets/testScene.scn") then I instantiate a TheSubclassScene() and I clone the rootNode of the scene and add it as a child node to the subclass scene.

let testScene = SCNScene(named:"art.scnassets/testScene.scn")!
let subclassScene = TheSubclassScene()
subclassScene.rootNode.addChildNode(testScene.rootNode.clone())

这篇关于子类化SCNScene和SceneKit编辑器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！