有几种方法可以解决这个问题：
1：标准方法：
在您的 delegate 方法中，为每个节点指定一个名称，如下所示（显然，如果您有很多节点，您可能希望根据需要将它们存储在数组或字典中）：
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
//1. Check We Have The Image Anchor
guard let imageAnchor = anchor as? ARImageAnchor else { return }
//2. Get The Reference Image
let referenceImage = imageAnchor.referenceImage
//1. Create The Plane Geometry With Our Width & Height Parameters
let planeGeometry = SCNPlane(width: referenceImage.physicalSize.width,
height: referenceImage.physicalSize.height)
//2. Create A New Material
let material = SCNMaterial()
material.diffuse.contents = UIColor.red
//3. Create The Plane Node
let planeNode = SCNNode(geometry: planeGeometry)
planeNode.geometry?.firstMaterial = material
planeNode.opacity = 0.25
planeNode.eulerAngles.x = -.pi / 2
//4. Add A Name To The Node
planeNode.name = "I Was Clicked"
//5. Add It To The Scene
node.addChildNode(planeNode)
}
然后使用touchesBegan，执行hitTest 并相应地处理您的触摸：
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
/*
1. Get The Current Touch Location
2. Check That We Have Touched A Valid Node
3. Check If The Node Has A Name
4. Handle The Touch
*/
guard let touchLocation = touches.first?.location(in: augmentedRealityView),
let hitNode = augmentedRealityView?.hitTest(touchLocation, options: nil).first?.node,
let nodeName = hitNode.name
else {
//No Node Has Been Tapped
return
}
//Handle Event Here e.g. PerformSegue
print(nodeName)
}
2：一种有趣的方法：
UIKit 元素实际上可以添加为SCNGeometry's Material。我个人没有看到很多人使用这种方法，但它可能对任何想要将UIKit 与ARKit 合并的人有用。
创建自定义 UIButton 例如：
/// Clickable View
class ClickableView: UIButton{
override init(frame: CGRect) {
super.init(frame: frame)
self.addTarget(self, action: #selector(objectTapped(_:)), for: .touchUpInside)
self.backgroundColor = .red
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
/// Detects Which Object Was Tapped
///
/// - Parameter sender: UIButton
@objc func objectTapped(_ sender: UIButton){
print("Object With Tag \(tag)")
}
}
并在您的委托方法中执行以下操作：
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
//1. Check We Have The Image Anchor
guard let imageAnchor = anchor as? ARImageAnchor else { return }
//2. Get The Reference Image
let referenceImage = imageAnchor.referenceImage
//1. Create The Plane Geometry With Our Width & Height Parameters
let planeGeometry = SCNPlane(width: referenceImage.physicalSize.width,
height: referenceImage.physicalSize.height)
//2. Create A New Material
let material = SCNMaterial()
DispatchQueue.main.async {
//3. Create The New Clickable View
let clickableElement = ClickableView(frame: CGRect(x: 0, y: 0,
width: 300,
height: 300))
clickableElement.tag = 1
//4. Add The Clickable View As A Materil
material.diffuse.contents = clickableElement
}
//5. Create The Plane Node
let planeNode = SCNNode(geometry: planeGeometry)
planeNode.geometry?.firstMaterial = material
planeNode.opacity = 0.25
planeNode.eulerAngles.x = -.pi / 2
//6. Add It To The Scene
node.addChildNode(planeNode)
}
这应该让你开始......