Point3d center = new Point3d();
((BoundingSphere)bounds).getCenter(center);
Transform3D tr = new Transform3D();
tr.setScale(10.0/((BoundingSphere)bounds).getRadius());
Transform3D tr2 = new Transform3D();
center.negate();
tr2.setTranslation(new Vector3f(center));
tr.mul(tr2);
transformGroup.setTransform(tr);
}