Unity3d with AR Foundation - How To Add Reference Points With Feature Points Or Camera Distance?

As I have been working in a new AR Mobile Application I saw the need for creating anchors (reference points) with AR Foundation. In this video I show you how to add reference points that target feature points and also how to add reference points by using the camera distance as a starting location.
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[@fasilnegash2135]

I spent more than a week to find a solution that works smoothly, and here we go. Thank you very much, and finally I have one question. When I cover the camera with my hand and release it prefab loaded will be lost. How can I keep their position when the camera lost the vision?

[@yangjun330]

Hi, I want to add objects at the edges of objects in the real world, how can I find the edges of these objects? Also, I want to use such a model in a Meta Quest device, is this possible? Thanks

[@_AANgurahGdDhananjaya]

is the prefab attached to the AR Anchor Manager component the displayed AR Object?

[@_AANgurahGdDhananjaya]

does the prefab have to contain AR Anchor components?

[@MarioMao]

Is there any tutorial on implementing "AR participants"? Thank you

[@dilmerv]

There isn't one yet but I am planning on creating one. Thanks for the feedback :)

[@nickbitounis7509]

Hi, how object you instantiate are so stable and stay where you put them without losing their position while you move your phone?? (on my side anything i instantiate it loses its position while i move my phone or they tremble)

[@dilmerv]

What phone are you using ? And are you creating an anchor when you instantiate the objects.

[@nickbitounis7509]

@@dilmerv hi, i am using xiaomi redmi note 7, what anchor? i instantiate my object relative to a pose

[@dilmerv]

You have to create what’s called a “Reference Point” by using the reference point manager, in newer version 3 > they are called anchors. Here is some info on what is required docs.unity3d.com/Packages/com.unity.xr.arfoundation@3.0/manual/anchor-manager.html

[@nickbitounis7509]

Thank you very much! I Will check it out. That's what i might missing

[@dilmerv]

Yeah no problem thank you !

[@kattz9051]

I'm not sure what I'm doing wrong but this doesn't work for me. For some reason everything works except for the tracking. Or should I say that the tracking works too well? When I move my camera, the objects move with it. I want the objects to stay in place in real world coordinates.

[@dilmerv]

What device are you using ? Also unity version ?

[@kattz9051]

@@dilmerv Unity version 2019.2.17f1 and I'm using a Samsung Galaxy S7

[@pulkit.guglani]

I am working on a project in which a user can create lines with colliders in AR, so do I need to add a reference point (8:59) as you did or will it work just by rendering the line in the world?

[@pulkit.guglani]

Edit: I watched another video of yours(kzbin.info/www/bejne/jaKTeqRrhbF6nMk 8:01) and you said we need to add anchor points for the line , so how to do it , I am stuck here.

[@dilmerv]

Right let me make a video about it this week ;)

[@pulkit.guglani]

@@dilmerv Wow , I wasn't expecting reply that early ... and thanks a lot for accepting my request for the tutorial.

[@pulkit.guglani]

Please sir make a video for that problem as soon as possible ... I am waiting 😋

[@pulkit.guglani]

😢😢

[@paulks9771]

Simple case : Simple AR scene, kzbin.info/www/bejne/bWPIe6Stg9adosk You put a cube in a scene in front of you, debug.log cube position and rotation, build and run, After build object is in place, log reads its position its ok, then you cover camera, everything freezes, you rotate the device somewhere else then the object looses its position debug.log prints that it is the same position and rotation, it seems that skybox itself rotates when you cover up camera, how to know if an object has lost its position? How to know if an object is in a different position or a position is replaced if the position of the object is not really replaced in unity? I need to notify users to come back to the initial position to see AR objects once again. Thank you!! Paul.

[@paulks9771]

Found it how to recognize if its lots, but still position is in place

[@kimkaye1712]

@@paulks9771 Hi can you share your solution? I'm having the same problem. Thank you.

[@paulks9771]

@@kimkaye1712 search in ARSession cs - trackingState and you`ll find out, its basically either tracking or limited, that`s it, the you can mess with point cloud