如何在 RealityKit 中将与真实世界对象的碰撞应用到 3D 对象 (.usdz)? [英] How to apply collision with real-world objects to a 3D object (.usdz) in RealityKit?

问题描述

我正在尝试使用在项目中导入的 .usdz 文件在真实世界的对象(如墙壁、沙发和...)之间应用碰撞.我曾尝试使用 PhysicsBodyComponent 和 CollisionComponent 但没有任何结果.这是导入 3D 对象的代码:

I'm trying to apply collision between real-world objects like wall, sofa and ... with a .usdz file imported in the project. I have tried using PhysicsBodyComponent and CollisionComponent but without any results. Here is the code for importing the 3D object:

let entityName = objects.objectName
    guard let entity = try? Entity.load(named: entityName, in: .main) else {
        return
    }
    
    // Creating parent ModelEntity
    let parentEntity = ModelEntity()
    parentEntity.addChild(entity)
    
    // Anchoring the entity and adding it to the scene
    // Add entity on horizontal planes if classified as `floor`.
    // Minimum bounds is 10x10cm
    let anchor = AnchorEntity(.plane(.horizontal, classification: .floor, minimumBounds: [0.1, 0.1]))
    anchor.name = entityName
    anchor.addChild(parentEntity)
    self.arView.scene.addAnchor(anchor)
    
    // Playing availableAnimations on repeat
    entity.availableAnimations.forEach { entity.playAnimation($0.repeat()) }
    
    // Add a collision component to the parentEntity with a rough shape and appropriate offset for the model that it contains
    parentEntity.generateCollisionShapes(recursive: true)
    
    // Installing gestures for the parentEntity
    self.arView.installGestures([.translation, .rotation], for: parentEntity)

推荐答案

虚拟对象不会与基于碰撞的物理对象(墙壁、沙发、平原等)交互.

Virtual objects do not interact with physical objects(wall, sofa, plains etc..) on a collision base.

我可以为您提供两种可能的解决方案:

I can offer you 2 possible solutions:

1. 基于虚拟的边界框 - 您可以通过跟踪添加的平面/网格并为每个平面/网格添加边界框来向这些元素添加虚拟容器.这样你就可以互动了
2. 对运动矢量进行光线投射 - 您可以将运动矢量光线投射到平原(或模型的中心，以防它不移动).在这种情况下，您将收到相关平面/网格.

1. Virtual based bounding boxes - You can add virtual containers to such elements by tracking the added planes/meshes and add bounding boxes for each. That way, you can interact
2. Raycast on the movement vector - You can raycast the movement vector on to plains(or the center of the model in case it does not move). In such a case, you will receive back the relevant plane/mesh.

这篇关于如何在 RealityKit 中将与真实世界对象的碰撞应用到 3D 对象 (.usdz)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！