Re: The AfterEffects export script.

Are the keyframe curves/graphs exported correctly? Or at least approximated?

I hope Nate can point you in the right direction.
This is great work as it is though. Almost there /o/

This is really important 'cause just for its controls, there are still some things like effects animations and 12/24fps things that are easier to animate in AE than in Spine. This would really fill in the gaps it has right now.

Thank you very much for the script
But how i can export multiple composition in After Effect as Animations in Spine?.

I usually use Comps as every animation status in AE, but the script only allow export one Comps at once. Then, when import JSONs to Spine, I have alot of Hierarchy and can't combine they together

Hi Nimai,

I'm very happy to hear that you have a script for AE to Spine. I was trying to write one for my self as well. I hope we can share ideas and features to make the script better and better.

About stepped and linear interpolation only, I have a solution to support bezier. Here is how I did it:

Translate:

if (key <= thisLayer.position.numKeys - 1 && thisLayer.position.keyOutInterpolationType(key) == KeyframeInterpolationType.BEZIER){
   curve1U = Math.round(position.keyOutTemporalEase(key)[0].influence)/100;
   curve2U = 1 - Math.round(position.keyInTemporalEase(key + 1)[0].influence)/100;
   curve1V = 0;
   curve2V = 1;
   f.write(", \"curve\": [" + curve1U + ", " + curve1V + ", " + curve2U + ", " + curve2V + "]");
}

Rotate:

if (key <= thisLayer.rotation.numKeys - 1 && thisLayer.rotation.keyOutInterpolationType(key) == KeyframeInterpolationType.BEZIER){
   curve1U = Math.round(rotation.keyOutTemporalEase(key)[0].influence)/100;
   curve2U = 1 - Math.round(rotation.keyInTemporalEase(key + 1)[0].influence)/100;
   curve1V = 0;
   curve2V = 1;
   f.write(", \"curve\": [" + curve1U + ", " + curve1V + ", " + curve2U + ", " + curve2V + "]");
}

Scale:

if (key <= thisLayer.scale.numKeys - 1 && thisLayer.scale.keyOutInterpolationType(key) == KeyframeInterpolationType.BEZIER){
   curve1U = Math.round(scale.keyOutTemporalEase(key)[0].influence)/100;
   curve2U = 1 - Math.round(scale.keyInTemporalEase(key + 1)[0].influence)/100;
   curve1V = 0;
   curve2V = 1;
   f.write(", \"curve\": [" + curve1U + ", " + curve1V + ", " + curve2U + ", " + curve2V + "]");
}

Opacity:

if (key <= thisLayer.opacity.numKeys - 1 && thisLayer.opacity.keyOutInterpolationType(key) == KeyframeInterpolationType.BEZIER){
   curve1U = Math.round(opacity.keyOutTemporalEase(key)[0].influence)/100;
   curve2U = 1 - Math.round(opacity.keyInTemporalEase(key + 1)[0].influence)/100;
   curve1V = 0;
   curve2V = 1;
   f.write(", \"curve\": [" + curve1U + ", " + curve1V + ", " + curve2U + ", " + curve2V + "]");
}

The limitation is that in AE we should always make horizontal bezier control points (which I think is enough).

I hope you find this useful. It's nice to meet you!

Quang

Awesome!

Hi Nimai!

I've just found a way to correctly convert speed and influence into x and y. For example for rotation:

if (key <= thisLayer.rotation.numKeys - 1 && thisLayer.rotation.keyOutInterpolationType(key) == KeyframeInterpolationType.BEZIER){
   duration = rotation.keyTime(key + 1) - rotation.keyTime(key);
   amount = Math.abs(rotation.keyValue(key + 1) - rotation.keyValue(key));
   averageSpeed = amount/duration;
   curve1U = rotation.keyOutTemporalEase(key)[0].influence/100;
   curve1V = rotation.keyOutTemporalEase(key)[0].speed/averageSpeed * curve1U;
   curve2U = rotation.keyInTemporalEase(key + 1)[0].influence/100;
   curve2V = rotation.keyInTemporalEase(key + 1)[0].speed/averageSpeed * curve2U;
   f.write(", \"curve\": [" + curve1U + ", " + curve1V + ", " + (1 - curve2U) + ", " + (1 - curve2V) + "]");
}

We just need to round the results to make them shorter. :rofl:

By the way, do you have a plan to convert puppet pins in AE into mesh deform in Spine?
Moreover, in AE, I see a very cool feature. It lets us transform a layer in 3D. I think it is possible to simulate that perspective look into Spine using mesh deform.

How do you think? Do you have time to further develop the script? I see that your thread was not updated in the last 5 months, so I just wonder.

Puppet support would be amazing! I don't have the time to pursue it, though.

The last time I approached that issue (before Spine existed) it was not possible as the mesh data was never serialized in a way that could be exported. It was a proprietary mesh-generating algorithm that only took in a few parameters.

Hi Mitch. Thanks for the info. I have an idea of even simulating that algorithm and adapt it to Spine, although I know this will be difficult.

Nimai, is it possible to make several animations in AE (each animation is a composition), and then export all of them to only one json file?

Yes exactly!

Do you mean I should manipulate the JSON files?