[Solved] Changing mesh cause animation to stop

Troubleshooting
1

Hi again

In following of solution to my previous problem :

now I have

Mesh lodMeshes[]=new Mesh[3];
geometry.setMesh(lodMeshes[xx]);

when at the beginning i .setMesh(lodMeshes[xx]); to one of meshes in lodMeshes[] then start animation for the first time it plays ok. then at runtime while model in playing animation, again I call .setMesh(lodMeshes[xx]); with different mesh but animation stops playing.
So after changing mesh i tried to clear all anim channels and play animation again, but it does not play.
here is what i am doing in my CustomeLODControl:

 @Override
    protected void controlRender(RenderManager rm, ViewPort vp) {
        Camera cam=vp.getCamera();
        int distance=(int) cam.getLocation().distance(spatial.getWorldTranslation());
        if(currentLevel !=0 && distance <5)
        {
            ((Geometry) spatial).setMesh(lodMeshes.get(0));
            currentLevel=0;
            System.out.println("changed to LOD level 0");
            animControl.clearChannels();
            animControl.createChannel().setAnim("walk");
            
            
        }
        else if(currentLevel !=1 && distance >=5 && distance<15)
        {
            ((Geometry) spatial).setMesh(lodMeshes.get(1));
            currentLevel=1;
            System.out.println("changed to LOD level 1");
            animControl.clearChannels();
            animControl.createChannel().setAnim("walk");
            
            
        }
        else if(currentLevel !=2 && distance >=15)
        {
            ((Geometry) spatial).setMesh(lodMeshes.get(2));
            currentLevel=2;
            System.out.println("changed to LOD level 2");
            animControl.clearChannels();
            animControl.createChannel().setAnim("walk");
  
        }
        
        
    }

what am i doing wrong ?

2

Any outputs; logs etc.
Also:
At the beginning you say
Mesh lodMeshes[]=new Mesh[3];
geometry.setMesh(lodMeshes[xx]);

inn the code you do
lodMeshes.get(0)

3

Yes, In my control I am using ArrayList<Mesh> lodMeshes; instead.
Sorry about it.

this was the leftover from my previous post. so in my explanation i used

    Mesh lodMeshes[]=new Mesh[3];
    geometry.setMesh(lodMeshes[xx]);

but in control i updated it to ArrayList.

4

nothing. just my simple outputs when going close/far from model

Found LODs on Models/Models/Characters/Doha/Doha.xbuf
Aug 29, 2016 12:25:30 AM com.jme3.animation.SkeletonControl controlRender
changed to LOD level 2
INFO: Hardware skinning engaged for Armature (Node)
changed to LOD level 1
changed to LOD level 0
changed to LOD level 1
changed to LOD level 2
changed to LOD level 1
changed to LOD level 0
changed to LOD level 1
changed to LOD level 0
BUILD SUCCESSFUL (total time: 33 seconds)
5

Maybe printing animControl or the chanells and see if there is something strange.

6

HeHe

Wherever, Whenever you have problem with your code. The solution is just adding this line to first of your code : :wink:skeletonControl.setHardwareSkinningPreferred(false);

7

Hardware Skinning has issues with material and mesh changes.

Though keep in mind some things need hardware skinning enabled like Android.

1 Like
8

I guess the mesh as not been “prepared” for animation and lacks the proper buffers.
HW skinning uses 2 special buffers, but even software skinning needs the BindPosition buffer to be set properly.
I think we should investigate further the original issue with generating lod from an xbuf pipeline model.

1 Like
9

I could solve the problem without using SoftwareSkinning :grinning:
just needed to call mesh.prepareForAnim(false); after updating mesh on geometry.

Thanks from all you guys. :wink: