如何在 ARKit 中没有物理交互的情况下检测渗透? [英] How to detect penetration without physical interaction in ARKit?

问题描述

我有一个固定的激光束 SCNNode 和一个连接在相机前面的检测球 SCNNode.

I have a fixed laser beam SCNNode and a detecting sphere SCNNode attached in front of a camera.

如何在没有物理交互的情况下检测渗透?我没有找到任何线索..

How to detect penetration without physical interaction? I have not found any clue..

-如下面 maxxFrazer 所建议的，我实现了物理交互，如果我的激光束是 .static 并且检测器由相机设置 .kinematic 移动，我就可以注册碰撞.

- as suggested below by maxxFrazer I implemented physical interaction and I'm able to register collision IF my laser beam is .static and detector moved by camera set .kinematic.

推荐答案

您似乎想要使用 SceneKit 解决方案，而不是 RealityKit.并且还想找到两个实际节点何时相交而不是 hitTest 或 raycast 相交?如果是这样，我已经尝试在下面解释如何设置...

It looks like you want to use a SceneKit solution, not RealityKit. And also want to find when two actual nodes intersect rather than a hitTest or raycast? If so, I've attempted to explain how to set that up below…

首先向 SCNNode 添加一个 PhysicsBody，以及一个 categoryBitMask + contactTestBitMask.这两个基本上是在说你的SCNNode body是什么类别，它可以碰撞到什么类别.

First add a physicsBody to the SCNNode, along with a categoryBitMask + contactTestBitMask. These two are basically saying what category your SCNNode body is, and what categories it can collide with.

然后，您还需要将 SCNScene.physicsWorld.contactDelegate 设置为符合 的对象SCNPhysicsContactDelegate，这样你就可以使用在这里找到的physicsWorld回调.

You then also need to set up your SCNScene.physicsWorld.contactDelegate to an object which conforms to SCNPhysicsContactDelegate, this is so you can use the physicsWorld callbacks found here.

关于堆栈溢出的另一个问题可能有助于您完成这项工作:

There's another question on stack overflow which may help in making this work for you:

检测 SceneKit 问题中的碰撞

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