Object3D in Objece3D does not work
<p>I created some Scene,added to group_lev2;<br>
group_lev2 added to another group.  Like this:</p>

<p>var group_top=new THREE.Object3D();<br>
var group_lev2=new THREE.Object3D();<br>
var scene1,scene2,scene3...<br>
group_lev2.add(scene1);<br>
group_lev2.add(scene2);<br>
group_lev2.add(scene3);<br>
group_top.add(group_lev2);</p>

<p>I run it in firefox,<br>
But I see nothing in my page.<br>
I putted these scenes into root group, displayed;<br>
But I want lots of groupe,to use different animate.</p>

<p>thanks!</p>