ARKit -环境遮挡

Question

在统一中，我们可以用环境深度实现遮挡。它在场景后面使用ARKit。如何在iOS ARkit中实现相同的行为。

我知道我们可以配置框架语义的深度，但我怀疑它是否真的等同于统一环境的深度遮挡？

// Build the set of required frame semantics.
let semantics: ARConfiguration.FrameSemantics = [.sceneDepth]
configuration.frameSemantics = semantics

session.run(configuration)

Answer 1

在ARKit中实现sceneReconstruction选项，在RealityKit中打开.occlusion。

唯一的缺点是丑陋的面具周围有柔软膨胀的边缘.

import RealityKit
import SwiftUI
import ARKit

struct ContentView: View {
    var body: some View {
        return ARContainer().ignoresSafeArea()
    }
}

struct ARContainer: UIViewRepresentable {

    func makeUIView(context: Context) -> ARView {  
        let arView = ARView(frame: .zero)
        arView.cameraMode = .ar
                
        arView.automaticallyConfigureSession = false
        let config = ARWorldTrackingConfiguration()
        config.sceneReconstruction = .mesh
        arView.session.run(config)

        arView.environment.sceneUnderstanding.options = .occlusion

        let box: MeshResource = .generateBox(size: 0.5)
        let material = SimpleMaterial(color: .green, isMetallic: true)
        let entity = ModelEntity(mesh: box, materials: [material])
        let anchor = AnchorEntity(world: [0,0,-1.5])
        anchor.addChild(entity)
        arView.scene.anchors.append(anchor)            
        return arView
    }       
    func updateUIView(_ uiView: ARView, context: Context) { }
}