问Swift SceneKit -编辑器与仿真之间的色差

EN

override func viewDidLoad() {
    super.viewDidLoad()        
    // create a new scene
    let scene = SCNScene(named: "art.scnassets/ship.scn")!       
    // create and add a camera to the scene
    let cameraNode = scene.rootNode.childNode(withName: "corner-camera", recursively: true)!
    // cameraNode.camera = SCNCamera()
    // scene.rootNode.addChildNode(cameraNode)        
    // place the camera
    // let camera = scene.rootNode.childNode(withName: "corner-camera", recursively: true)!
    // cameraNode.position = SCNVector3(x: 0, y: 0, z: 15)        
    // create and add a light to the scene
    // let lightNode = SCNNode()
    // lightNode.light = SCNLight()
    // lightNode.light!.type = .omni
    // lightNode.position = SCNVector3(x: 0, y: 10, z: 10)
    // scene.rootNode.addChildNode(lightNode)

    // create and add an ambient light to the scene
    // let ambientLightNode = SCNNode()
    // ambientLightNode.light = SCNLight()
    // ambientLightNode.light!.type = .ambient
    // ambientLightNode.light!.color = UIColor.darkGray
    // scene.rootNode.addChildNode(ambientLightNode)

    // retrieve the ship node
    // let ship = scene.rootNode.childNode(withName: "ship", recursively: true)!        
    // animate the 3d object
    // ship.runAction(SCNAction.repeatForever(SCNAction.rotateBy(x: 0, y: 2, z: 0, duration: 1)))        
    // retrieve the SCNView
    let scnView = self.view as! SCNView        
    // set the scene to the view
    scnView.scene = scene        
    // set camera to corner-camera
    scnView.pointOfView = cameraNode        
    // allows the user to manipulate the camera
    // scnView.allowsCameraControl = true
    // show statistics such as fps and timing information
    // scnView.showsStatistics = true

    // configure the view
    scnView.backgroundColor = UIColor.white

    // add a tap gesture recognizer
    // let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
    // scnView.addGestureRecognizer(tapGesture)
}