animatePaint.add(new ColorAnimator(treeNodes));
animatePaint.add(new RepaintAction());
m_vis.putAction("animatePaint", animatePaint);
// create the tree layout action
RadialTreeLayout treeLayout = new RadialTreeLayout(tree);
//treeLayout.setAngularBounds(-Math.PI/2, Math.PI);
m_vis.putAction("treeLayout", treeLayout);
CollapsedSubtreeLayout subLayout = new CollapsedSubtreeLayout(tree);
m_vis.putAction("subLayout", subLayout);