ARCore的语义是否与ARKit的“guard let planeAnchor”相当？

Question

我想知道ARCore / Kotlin中是否有类似的语义结构，如guard let / ARKit中的以下Swift声明？

let anchor: ARAnchor?

guard let planeAnchor = anchor as? ARPlaneAnchor else { 
    print("condition not met")
    return 
}

Answer 1

我想我已经找到了使用Elvis运算符和安全转换运算符的ARCore的planeAnchor所需的语义：

public class CenterPosePlaneAnchor { ... }

val anchor: Anchor?
val info = "condition not met"

val planeAnchor = anchor as? CenterPosePlaneAnchor ?: return println(info)