我正在尝试访问子节点:boxNode,然后使用来自平移手势识别器的输入旋转节点。我应该如何访问这个节点以便我可以操作它?我应该在全局范围内声明多维数据集节点并以这种方式进行修改吗?我是 Swift 新手,所以如果这段代码看起来很草率,我深表歉意。我想在我的 panGesture() 函数中添加旋转动作。谢谢!
import UIKit
import SceneKit
class GameViewController: UIViewController {
var scnView: SCNView!
var scnScene: SCNScene!
override func viewDidLoad() {
super.viewDidLoad()
setupView()
setupScene()
}
// override var shouldAutorotate: Bool {
// return true
// }
//
// override var prefersStatusBarHidden: Bool {
// return true
// }
func setupView() {
scnView = self.view as! SCNView
}
func setupScene() {
scnScene = SCNScene()
scnView.scene = scnScene
scnView.backgroundColor = UIColor.blueColor()
initCube()
initLight()
initCamera()
}
func initCube () {
var cubeGeometry:SCNGeometry
cubeGeometry = SCNBox(width: 1.0, height: 1.0, length: 1.0, chamferRadius: 0.0)
let boxNode = SCNNode(geometry: cubeGeometry)
scnScene.rootNode.addChildNode(boxNode)
}
func initLight () {
let light = SCNLight()
light.type = SCNLightTypeAmbient
let lightNode = SCNNode()
lightNode.light = light
light.castsShadow = false
lightNode.position = SCNVector3(x: 1.5, y: 1.5, z: 1.5)
scnScene.rootNode.addChildNode(lightNode)
}
func initCamera () {
let camera = SCNCamera()
let cameraNode = SCNNode()
cameraNode.camera = camera
cameraNode.position = SCNVector3(x: 0.0, y: 0.0, z: 5.0)
scnScene.rootNode.addChildNode(cameraNode)
}
func initRecognizer () {
let panTestRecognizer = UIPanGestureRecognizer(target: self, action: #selector(GameViewController.panGesture(_:)))
scnView.addGestureRecognizer(panTestRecognizer)
}
//TAKE GESTURE INPUT AND ROTATE CUBE ACCORDINGLY
func panGesture(sender: UIPanGestureRecognizer) {
//let translation = sender.translationInView(sender.view!)
}
}