j1.setInverseBindPose(j1Transform);
j1.setParentIndex(Joint.NO_PARENT);
final Transform j2Transform = new Transform();
j2Transform.setTranslation(0, 0, 5);
j2Transform.invert(j2Transform);
final Joint j2 = new Joint("j2");
j2.setInverseBindPose(j2Transform);
j2.setParentIndex((short) 0);
final Skeleton sk = new Skeleton("arm sk", new Joint[] { j1, j2 });