[SOLVED] No-Rig Animation problem

Troubleshooting import-assets
1

I have a scene setup in blender with several geometries, some are static, and some have none armature animations (No Rig Nor Bones) just key-framing transformation animations (Translation, Rotation, and Scaling), it works fine in blender and exported in glb, It works fine with windows 3D Viewer, but in Jme it produces the following error

java.lang.ArrayIndexOutOfBoundsException: Index -3 out of bounds for length 66
	at com.jme3.animation.CompactVector3Array.deserialize(CompactVector3Array.java:95)
	at com.jme3.animation.CompactVector3Array.deserialize(CompactVector3Array.java:42)
	at com.jme3.animation.CompactArray.get(CompactArray.java:142)
	at com.jme3.anim.interpolator.FrameInterpolator$TrackDataReader.getEntryClamp(FrameInterpolator.java:135)
	at com.jme3.anim.interpolator.AnimInterpolators$4.interpolate(AnimInterpolators.java:97)
	at com.jme3.anim.interpolator.AnimInterpolators$4.interpolate(AnimInterpolators.java:92)
	at com.jme3.anim.interpolator.FrameInterpolator.interpolate(FrameInterpolator.java:71)
	at com.jme3.anim.TransformTrack.getDataAtTime(TransformTrack.java:284)
	at com.jme3.anim.tween.action.ClipAction.interpolateTransformTrack(ClipAction.java:40)
	at com.jme3.anim.tween.action.ClipAction.doInterpolate(ClipAction.java:30)
	at com.jme3.anim.tween.action.BlendableAction.interpolate(BlendableAction.java:52)
	at com.jme3.anim.AnimLayer.update(AnimLayer.java:209)
	at com.jme3.anim.AnimComposer.controlUpdate(AnimComposer.java:390)
	at com.jme3.scene.control.AbstractControl.update(AbstractControl.java:118)
	at com.jme3.scene.Spatial.runControlUpdate(Spatial.java:743)
	at com.jme3.scene.Spatial.updateLogicalState(Spatial.java:890)
	at com.jme3.scene.Node.updateLogicalState(Node.java:239)
	at com.jme3.app.SimpleApplication.update(SimpleApplication.java:265)
	at com.jme3.system.lwjgl.LwjglWindow.runLoop(LwjglWindow.java:580)
	at com.jme3.system.lwjgl.LwjglWindow.run(LwjglWindow.java:669)
	at java.base/java.lang.Thread.run(Thread.java:829)

If you have hints or tricks to make animations suitable for jme, I’ll be thankful

2

Below are all the resources I review when creating animations. From key frames to armature animations.

Animations in Blender 2.61 and JME3

jMonkeyEngine 3 Tutorial (7) - Hello Animation

Creating assets in Blender3D

Moreover below are the blender versions I use:
Blender 3.4 I use it as primary.
Blender 2.79b I use it as backup.

See below if you want to look at my animations working. :slightly_smiling_face: Both animations created in Blender 2.79b and 3.4 are in the videos.
https://www.youtube.com/@PixelappOfficial/shorts
https://www.youtube.com/@PixelappOfficial/videos

If you encounter any specific issues after reviewing everything feel free to reply.

1 Like
3

Thank you for your response
My problem is different
Check this out video

What I want is similar

–update–
My animations are similar to this(without rig, without bones, without skeleton, and without armature)

4

Have you tried gltf? I believe JME supports gltf better than glb in general.

5

From a “what does it support?” perspective, gltf and glb are interchangeable as far as JME is concerned. There are differences in loading/memory performance but as far as features, they support the same thing. (One is delegating to the other, actually.)

1 Like
6

Solve it
I needed to Bake Action in Blender

1 Like
7

@carpenter Can you provide the details of the steps so others can use the solution? And maybe a screenshot?

8

Sure
After all the animations you wanted are ready

image
image1364×705 152 KB

Select Object → Animations → Bake Action
image
image1365×707 175 KB

Then Check Box these Selections
image
image1365×704 156 KB

And This is the Result
image
image1365×703 156 KB

1 Like