[SOLVED] SkeletonDebugger appears backward on Jaime

Troubleshooting
1

I am creating a demo app which applies a SkeletonDebugger to the Jaime model in jme3-testdata. (This is not homework for a class or job interview.) The debugger wires appear to be backward (rotated 180 degrees on the Y axis) relative to the mesh.

Here is a test app which demonstrates the issue. I see this in both jME 3.0 and 3.1. I don’t see this with Elephant or Sinbad or any model other than Jaime. It doesn’t seem to matter whether I attach the debugger to the model node or the root node.

package mygame;
import com.jme3.animation.Skeleton;
import com.jme3.animation.SkeletonControl;
import com.jme3.app.SimpleApplication;
import com.jme3.light.DirectionalLight;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Vector3f;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.debug.SkeletonDebugger;

public class Main extends SimpleApplication {
    public static void main(String[] args) {
        Main app = new Main();
        app.start();
    }
    
    @Override
    public void simpleInitApp() {
        Node jaime = (Node) assetManager.loadModel("Models/Jaime/Jaime.j3o");
        rootNode.attachChild(jaime);
        
        Material material = new Material(
                assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        material.getAdditionalRenderState().setDepthTest(false);
        material.getAdditionalRenderState().setWireframe(true);
        material.setColor("Color", ColorRGBA.Blue);
        
        SkeletonControl sc = jaime.getControl(SkeletonControl.class);
        Skeleton skeleton = sc.getSkeleton();        
        Spatial debugger = new SkeletonDebugger("debugger", skeleton);
        debugger.setMaterial(material);
        rootNode.attachChild(debugger);
        //jaime.attachChild(debugger);
        
        DirectionalLight light = new DirectionalLight();
        light.setColor(new ColorRGBA(2f, 2f, 2f, 1f));
        light.setDirection(Vector3f.UNIT_X);
        rootNode.addLight(light);
        
        cam.setLocation(new Vector3f(-2.3f, 0f, 0.8f));
        cam.lookAt(new Vector3f(0f, 0.6f, 0f), Vector3f.UNIT_Y);
    }
}
2 Likes
2

Mhh Jaime is rotated by 180 degrees on the z à is. Guess the skeleton debugger is not using world transforms. You can try to attach the debugger to Jaime’s Node.

3

Already tried that.

4

For the record, the fix was to copy the transform from Jaime’s geometry and apply it to the debugger.