Bug 239458 – Animation looping in AR even if not specified.

• Component: WebXR
• Status: RESOLVED INVALID

[Kewal Gokuldas]

I am using Model-viewer to see an object in AR. But the animation on the object is looping in Quick look even if looping is not on.

[Antoine Quint]

Hi Kewal, thanks for filing this bug. However, a testcase is necessary for us to diagnose this issue, please add one and we'll investigate.

[Kewal Gokuldas]

https://maple-summer-branch.glitch.me/
Will this help ?(In reply to Antoine Quint from comment #1)
> Hi Kewal, thanks for filing this bug. However, a testcase is necessary for
> us to diagnose this issue, please add one and we'll investigate.

[Antoine Quint]

That helps, thank you.

[Antoine Quint]

Going by https://developer.apple.com/documentation/arkit/adding_an_apple_pay_button_or_a_custom_action_in_ar_quick_look, it looks like there isn't an option to control the animation behavior in the AR experience. I could be mistaken though, but I don't expect there is an actual bug here.

[Dean Jackson]

Yeah, it seems this behaviour is specific to model-viewer's in-page implementation.

[Kewal Gokuldas]

I see. So it will be a new feature to control animation in AR? Until then any animation from model-viewer will keep looping ?

[Antoine Quint]

I don't know the particulars of model-viewer. I think in this case it might be more about the USDZ file which does not specify that the animation shouldn't be looping.

I'm told that you can codify that an animation should not be looping using "loopStartToEndTimeCode" in the USDZ file:

customLayerData = {
    string creator = "usdzconvert preview 0.62"
    bool loopStartToEndTimeCode = 0
}

[Kewal Gokuldas]

THANKS !

[Radar WebKit Bug Importer]

<rdar://problem/92217001>