About AR compatibility

šŸŒµ Needle Engine
1

Hi guys :slightly_smiling_face: ! Hoping youre doing good.
IĀ“m trying the AR option in some samples (the button START AR) but nothing happends. unlike the VR which works well. IĀ“m using a Redmi 9 with Android 11 (RP1A) and I was wondering if there is a way to know if my mobile is not compatible or something like that.
Thanks :slightly_smiling_face:

Original Post on Discord

by user 632418299711324161

2

Quick way to test is: go to https://modelviewer.dev and check if AR works there

3

If it does: it should work in Needle Engine too!

4

Weā€™ve seen some devices and cases already where the browser reports AR as available but then actually doesnā€™t do anything; in some cases a device restart fixed that

5

Thanks, unfortunately my device doesnĀ“t work but I found whan which does.
One quest about the WebImageTracking. Is there any way to detect when the image corresponding to the model of one of the Tracked Images is detected ? Like a event to suscribe or something loike that ? Because I want to detect that from a outside class.
I have been checking the script and I found this lines :
image.png

by user 632418299711324161

6

You get onEnable/onDisable callbacks on the tracked object, so you can just add a component to it that does what you want to do in onEnable/onDisable

7

Oh thats so clear, thank you : ) It will be helpful.

by user 632418299711324161

8

Hi IĀ“m trying to change the color of the model each time that the model is enable but is not working. When I start a AR session the model appears in front of me all the time and when the image is reconigzed , the model is placed over the image. I think that it is not disabling and enabling because is in front all the time, do you know what is happening ?

by user 632418299711324161

9

Parent it to the WebARSessionRoot
So

  • Camera
  • WebXR (has WebXR and USDZExporter components)
  • WebARSessionRoot (has WebARSessionRoot component)
    • Image Tracking (ImageTracking component)
      • Your Content
10

yea

by user 632418299711324161

11

Wait, with WebARSeessionRoot you mean the object which holds this components :

by user 632418299711324161

12

image.png
image.png641Ɨ777 60.5 KB

by user 632418299711324161

13

Thereā€™s an actual component called ā€œWebARSessionRootā€
Itā€™s implicitly added when you donā€™t have it but for better control you can put it in the scene

14

Doesnā€™t need to be on the same object as WebXR/USDZExporter though

15

Okey, thank you. IĀ“ll try it.

by user 632418299711324161

16

Updated the structure above with a typical one

17

Thanks

by user 632418299711324161

18

I have updated as you said and is happening the same. This is my structure :
image.png

by user 632418299711324161

19

My WebXR component :

by user 632418299711324161

20

image.png
image.png628Ɨ837 63.7 KB

by user 632418299711324161