Getting NaN on iOS when using animation.

Question

I use an Animator on a GameObject hierarchy with a clip animating the rotation of a child. Everything is fine in the editor (5.3.0.f4). On iOS the animation generates NaN for rotation and scale of that child object so that the attached sprite is not being rendered.

I reduced everything in order to find the bug.
The hierarchy is: Root->Body->Head->Jaw
Animator is attached to Root.
The animation clip does only a rotation around the z-axis starting at 20 and going to 10. So nothing special here.

An attached script logs for the Head object:
Local Rotation: (NaN, NaN, NaN, NaN)
Rotation: (NaN, NaN, NaN, NaN)
Local Scale: (1.0, 1.0, 1.0)
Scale: (NaN, NaN, NaN)

Only position seems to be fine.

If I don't change any value within the animation (only static values) everything stays fine.

Anyone an idea what I'm doing wrong? Thanks!

Answer 1

Answer by DLBit · Dec 20, 2015 at 11:57 AM

Seems to work if I switch Interpolation from Euler Angles to Quaternion in the animation clip. Is it a bug in the iOS implementation or did I miss something?

Add comment · Show 1 · Share

livingtech · Feb 23, 2016 at 10:50 PM 0

Share

Took me a while to figure out how to change the interpolation settings. You have to right-click on the animation properties. This fixed my issue also, for the record, so thanks!

Answer 2

Answer by DLBit · Dec 21, 2015 at 09:38 AM

Problem still exists in 5.3.1f1.

Add comment · Show 7 · Share

brunodp · Dec 22, 2015 at 01:38 PM 0

Share

@DLBit, just wanted to say that I'm having the same "problem" ? (I'm new to Unity so I'm not really sure if this is not because of something I'm doing wrong).

I had an older project from a tutorial I followed which had some rotations on sprites which worked as expected. So I checked the interpolation types and the value was set to "Euler Angle (Quaternion Approximation)". In the tutorial it wasn't a step to manually choose this interpolation type so I'm guessing it's the default value that has changed with Unity3D updates.

I set the interpolation to "Euler Angle (Quaternion Approximation)" and now I have the animation working properly on iOS.

DLBit brunodp · Dec 22, 2015 at 03:30 PM 1

Share

Thanks. Glad to see I'm not alone with it. You're right. On iOS, Euler Angle (Quaternion Approximation) works too. Just tried it. So everything works fine except for the default... $$anonymous$$aybe I should report it as a bug.

wijesijp · Jan 12, 2016 at 07:52 AM 0

Share

I am also having the same issue on Android devices This is a really use full information

Changing to Quaternion Approximation worked for me too ...

destructivArts · Jan 13, 2016 at 03:59 AM 0

Share

I also just dealt with this issue. Right now it seems that your solution of changing the Interpolation $$anonymous$$ode to Quaternion is the only way to change it.

MrConkin · Feb 23, 2016 at 05:18 AM 0

Share

Also had this issue and your workaround did the trick. Thanks!

samizzo · Jul 18, 2016 at 04:13 AM 0

Share

Has anyone reported this as a bug?

DLBit samizzo · Jul 18, 2016 at 11:39 AM 0

Share

Yes. It is case 761257.

Getting NaN on iOS when using animation.

2 Replies

Your answer

Follow this Question

Related Questions