I am just getting started with ARkit and Unity and tried the most basic thing, placing an object in the scene. I am placing the object 3 units in front of the camera and not attaching it to any anchor or generated plane. When I move my camera the object also slightly moves, which I believe should not happen.
How do I optimize the anchoring of the object in the AR space?
At the start of AR, objects should move with the camera until ARKit is able to "initialize" and get its bearing.
After initialization, objects may move a bit as ARKit's understand of the world improves or if its view is obscured, etc.
However, large-scale movements should not be a common occurrence and small movements are just a nature of the tech right now.
If the "pre-initialization" movement is unsettling, you can consider hiding the object until the ARSession has initialized.
I've not actually used Unity with ARKit, so I can't help you with code there, but feel free to try out Viro React which is an cross-platform mobile AR/VR framework that lets you build AR/VR apps in React Native (and it's free!).
