public BoundingVolume transform(Matrix4f trans, BoundingVolume store) {
    BoundingSphere sphere;
    if (store == null || store.getType() != BoundingVolume.Type.Sphere) {
      sphere = new BoundingSphere(1, new Vector3f(0, 0, 0));
    } else {
      sphere = (BoundingSphere) store;
    }

    trans.mult(center, sphere.center);
    Vector3f axes = new Vector3f(1, 1, 1);
    trans.mult(axes, axes);
    float ax = getMaxAxis(axes);
    sphere.radius = FastMath.abs(ax * radius) + RADIUS_EPSILON - 1f;
    return sphere;
  }