如何在SwiftUI上异步加载Reality Composer场景？

huangapple
go评论145阅读模式
英文:

How to load Reality Composer scenes asynchronously on SwiftUI?

问题

在我的项目中，我像这样同步加载现实文件：

  1. struct DemoView: View {
  2.     @State private var arView = ARView(frame: .zero)
  3.     @State private var Scene1 = try! Experience1.loadScene1()
  5.     var body: some View {
  6.        ZStack {
  7.          ARViewContainer(arView: $arView, Scene1: $Scene1)
  8.            .ignoresSafeArea()
  9.          Button("play") {
  10.            Scene1.notifications.replay.post()
  11.          }
  12.        }
  13.     }
  14. }
  16. struct ARViewContainer: UIViewRepresentable {
  17.     @Binding var arView: ARView
  18.     @Binding var Scene1: Experience1.Scene1
  20.     func makeUIView(context: Context) -> ARView {
  21.         DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
  22.             arView.scene.anchors.append(Scene1)
  23.         }
  24.      
  25.         return ARView
  26.     }
  27. }

由于我的现实场景中的模型具有大量多边形，我可以尝试以异步方式加载现实文件吗？

英文:

On my project, I load reality files synchronously like this:

  1. struct: DemoView: View {
  2.     @State private var arView = ARView(frame: .zero)
  3.     @State private var Scene1 = try! Experience1.loadScene1()
  5.     var body: some View {
  6.        ZStack {
  7.          ARViewContainer(arView: $arView, Scene1: $Scene1)
  8.            .ignoresSafeArea()
  9.          Button("play") {
  10.            Scene1.notifications.replay.post()
  11.          }
  12.        }
  13.     }
  14. }
  16. struct ARViewContainer: UIViewRepresentable {
  17.     @Binding var arView: ARView
  18.     @Binding var Scene1: Experience1.Scene1
  20.     func makeUIView(context: Context) -> ARView {
  21.         DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
  22.             arView.scene.anchors.append(Scene1)
  23.         }
  24.      
  25.         return ARView
  26.     }
  27. }

Since my model in Reality Scene has a lot of polygons, can I turn to load reality files asynchronously?

答案1

得分: 2

以下是代码的中文翻译部分：

用于异步加载 Reality Composer 文件的方法

当您需要异步加载 Reality Composer 场景时，请尝试以下代码：

  1. import SwiftUI
  2. import RealityKit
  4. struct ContentView : View {
  5.     var body: some View {
  6.         ARViewContainer().ignoresSafeArea()
  7.     }
  8. }
  1. struct ARViewContainer : UIViewRepresentable {
  2.     
  3.     let arView = ARView(frame: .zero)
  4.     let anchor = AnchorEntity()
  5.     
  6.     func makeUIView(context: Context) -> ARView {
  7.         
  8.         Experience.loadBoxAsync(completion: { result in
  9.             do {
  10.                 let heavyBoxScene = try result.get()
  11.                 arView.scene.anchors.append(heavyBoxScene)
  12.             } catch {
  13.                 print("错误: \(error.localizedDescription)")
  14.             }
  15.         })
  16.         return arView
  17.     }
  18.     func updateUIView(_ vue: ARView, context: Context) { }
  19. }

用于异步加载 USDZ 文件的方法

当您需要异步加载 .usdz 模型时，请尝试以下代码：

  1. import SwiftUI
  2. import RealityKit
  3. import Combine
  5. struct ARViewContainer : UIViewRepresentable {
  6.     
  7.     @State var cancellable: AnyCancellable? = nil
  8.     let anchor = AnchorEntity()
  9.     let arView = ARView(frame: .zero)
  10.     
  11.     func makeUIView(context: Context) -> ARView {
  13.         DispatchQueue.main.async {
  15.             cancellable = Entity.loadModelAsync(named: "character.usdz").sink(
  16.                 
  17.                 receiveCompletion: { completion in
  18.                     if case let .failure(error) = completion {
  19.                         print("由于 \(error) 无法加载模型")
  20.                     }
  21.                     self.cancellable?.cancel()
  22.                     
  23.                 }, receiveValue: { [self] (model: Entity) in
  24.                     anchor.addChild(model)
  25.                     anchor.position.z = -1.0
  26.                     arView.scene.anchors.append(anchor)
  27.                 })
  28.         }
  29.         return arView
  30.     }
  31.     func updateUIView(_ vue: ARView, context: Context) { }
  32. }

附言

回答您的下一个问题。

英文:

Async loading method for Reality Composer files

Try the following code when you need to load a Reality Composer scene asynchronously:

  1. import SwiftUI
  2. import RealityKit
  4. struct ContentView : View {
  5.     var body: some View {
  6.         ARViewContainer().ignoresSafeArea()
  7.     }
  8. }
  1. struct ARViewContainer : UIViewRepresentable {
  2.     
  3.     let arView = ARView(frame: .zero)
  4.     let anchor = AnchorEntity()
  5.     
  6.     func makeUIView(context: Context) -> ARView {
  7.         
  8.         Experience.loadBoxAsync(completion: { result in
  9.             do {
  10.                 let heavyBoxScene = try result.get()
  11.                 arView.scene.anchors.append(heavyBoxScene)
  12.             } catch {
  13.                 print("Error: \(error.localizedDescription)")
  14.             }
  15.         })
  16.         return arView
  17.     }
  18.     func updateUIView(_ vue: ARView, context: Context) { }
  19. }

Async loading method for USDZ files

Try the following code when you need to load .usdz model asynchronously:

  1. import SwiftUI
  2. import RealityKit
  3. import Combine
  5. struct ARViewContainer : UIViewRepresentable {
  6.     
  7.     @State var cancellable: AnyCancellable? = nil
  8.     let anchor = AnchorEntity()
  9.     let arView = ARView(frame: .zero)
  10.     
  11.     func makeUIView(context: Context) -> ARView {
  13.         DispatchQueue.main.async {
  15.             cancellable = Entity.loadModelAsync(named: "character.usdz").sink(
  16.                 
  17.                 receiveCompletion: { completion in
  18.                     if case let .failure(error) = completion {
  19.                         print("Unable to load a model due to \(error)")
  20.                     }
  21.                     self.cancellable?.cancel()
  22.                     
  23.                 }, receiveValue: { [self] (model: Entity) in
  24.                     anchor.addChild(model)
  25.                     anchor.position.z = -1.0
  26.                     arView.scene.anchors.append(anchor)
  27.                 })
  28.         }
  29.         return arView
  30.     }
  31.     func updateUIView(_ vue: ARView, context: Context) { }
  32. }

P. S.

Answer to your next question.

huangapple
  • 本文由 发表于 2023年3月8日 18:18:39
  • 转载请务必保留本文链接：https://go.coder-hub.com/75671780.html
  • reality-composer
  • realitykit
  • swift
  • swiftui
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