How to use the exported animation JSON file ? Can we use this JSON file and apply the animation on another mesh?

Questions
1

Hello Babylonjs family. :grin: :pray:

I imported a model in the sandbox which had an animation. I clicked the save animation button which in turn downloaded a JSON file.
File - Dropbox - animations.json - Simplify your life

I want to use this animation on another model. Is there a way to use this json file for the desired task.
If not, Is there any other way of replicating the animation of a model to another model ?

Please help :pray:

2

Hello!

Hmmm what exact “save animation” button did you click?

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3

hello @carolhmj,
Sorry for the confusion, Here is the what i did
clicked on one of the animations and then clicked edit,

lotus_elise_ss2
lotus_elise_ss21358×588 133 KB

followed by - clicking on save button and save file.
lotus_elise_ss3
lotus_elise_ss31366×724 120 KB

which resulted in a download, JSON file - Dropbox - animations.json - Simplify your life

Now i was wondering can i apply this animation on another mesh model.
Or is there a way of copying animations form one mesh model to another ?

Please help! :smile:

4

Oooh thanks for the clarification! Yes, you can use the ParseFromFileAsync method to load any animation: Animation | Babylon.js Documentation (babylonjs.com). However, your example seems to be exporting a single channel from an animation group, so if you just load that single channel into another mesh, the results might not be what you want.

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5

thanks @carolhmj , so should i try to donwload the whole animation instead of a single channel ? i don’t see any options for that.
Also there another way to replicating the animation to another mesh model ?
:sweat_smile: :sweat_smile:

6

The process of replicating the animation in another model is called retargeting, and it’s quite a common process, we’ve had a few topics over time about it with good advice: Anyone figured out retargeting yet? - Questions - Babylon.js (babylonjs.com), GLB blend animations and meshes in different files - Questions - Babylon.js (babylonjs.com). It also depends on how your animation is defined (if it’s bones, morph targets, etc etc
), are you able to share the model file?

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7

hey @carolhmj , I’ll surely try to implement retargeting. Thanks for the links.
Here is the model that i’m using - LOTUS ÉLISE - Download Free 3D model by StĂ©phane Agullo (@sa3d) [75e9045] - Sketchfab

8

Thanks for sharing! Yeah, looking at how this asset is defined, if you want to reproduce the entire car trajectory, you’ll have to retarget the entire group, exporting and loading a single animation will not work as you expect. Also, the asset is defined in quite a particular way, so be warned that if the other mesh you want to replicate the animation on is defined with a different hierarchy, etc, you’ll have to consider all of this in your retargeting.

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