如何激活RealityKit中的手势功能以控制模型实体？

huangapple
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英文:

How to activate RealityKit gestures for Model entity?

问题

在下面的代码中，我创建了一个模型实体并加载了一个名为"stone"的3D模型。然后，我将generateCollisionShapes设置为true。然后，我应该能够将手势安装到视图中，但我收到一个错误，说我的模型实体不符合类型'HasCollision'。

我需要一些帮助让这个工作起来。任何反馈都将不胜感激。

  1. import ARKit
  2. import RealityKit
  4. class Coordinator: NSObject {
  5.     
  6.     weak var view: ARView?
  7.             
  8.     @objc func handleTap(_ recognizer: UITapGestureRecognizer) {
  10.         guard let view = self.view else { return }            
  11.         let tapLocation = recognizer.location(in: view)
  12.         
  13.         let results = view.raycast(from: tapLocation, 
  14.                                allowing: .estimatedPlane, 
  15.                               alignment: .horizontal)
  16.         
  17.         if let result = results.first {
  18.             
  19.             let anchor = AnchorEntity(raycastResult: result)
  20.             
  21.             guard let modelEntity = try? ModelEntity.load(named: "stone") 
  22.             else {
  23.                 print("没有找到模型")
  24.                 return
  25.             }                
  26.             modelEntity.generateCollisionShapes(recursive: true)
  27.             anchor.addChild(modelEntity)                
  28.             view.scene.addAnchor(anchor)                                
  29.             view.installGestures(.all, for: modelEntity)    
  30.         }            
  31.     }        
  32. }
英文:

In the code below, I create a model entity and load a 3d model named "stone". I then set generateCollisionShapes to true. I should then be able to install gestures to the view but I'm getting an error saying my model entity doesn't conform to the type 'HasCollision'.

I need some help getting this to work. Any feedback is appreciated.

  1. import ARKit
  2. import RealityKit
  4. class Coordinator: NSObject {
  5.     
  6.     weak var view: ARView?
  7.             
  8.     @objc func handleTap(_ recognizer: UITapGestureRecognizer) {
  10.         guard let view = self.view else { return }            
  11.         let tapLocation = recognizer.location(in: view)
  12.         
  13.         let results = view.raycast(from: tapLocation, 
  14.                                allowing: .estimatedPlane, 
  15.                               alignment: .horizontal)
  16.         
  17.         if let result = results.first {
  18.             
  19.             let anchor = AnchorEntity(raycastResult: result)
  20.             
  21.             guard let modelEntity = try? ModelEntity.load(named: "stone") 
  22.             else {
  23.                 print("didn't find model")
  24.                 return
  25.             }                
  26.             modelEntity.generateCollisionShapes(recursive: true)
  27.             anchor.addChild(modelEntity)                
  28.             view.scene.addAnchor(anchor)                                
  29.             view.installGestures(.all, for: modelEntity)    
  30.         }            
  31.     }        
  32. }

答案1

得分: 1

你应该使用 Entity.loadModel(...) 方法，而不是 ModelEntity.load(...)。

  1. guard let modelEntity = try? Entity.loadModel(named: "stone") else { return }
  3. modelEntity.generateCollisionShapes(recursive: true)
  5. arView.installGestures([.all], for: modelEntity as Entity & HasCollision)

附注：

  • 不建议将ARView对象声明为UIView的“view” - 声明为“arView”。
英文:

You should use Entity.loadModel(...) method instead of ModelEntity.load(...)

  1. guard let modelEntity = try? Entity.loadModel(named: "stone") else { return }
  3. modelEntity.generateCollisionShapes(recursive: true)
  5. arView.installGestures([.all], for: modelEntity as Entity & HasCollision)

P. S.

  • It's not good to declare an ARView object as UIView's view – declare it as arView.

huangapple
  • 本文由 发表于 2023年6月8日 20:51:58
  • 转载请务必保留本文链接：https://go.coder-hub.com/76432045.html
  • arkit
  • realitykit
  • swift
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