/** @see prefuse.action.Action#run(double) */
public void run(double frac) {
Graph g = (Graph) m_vis.getGroup(m_group);
initSchema(g.getNodes());
m_origin = getLayoutAnchor();
NodeItem n = getLayoutRoot();
Params np = (Params) n.get(PARAMS);
// calc relative widths and maximum tree depth
// performs one pass over the tree
m_maxDepth = 0;
calcAngularWidth(n, 0);
if (m_autoScale) setScale(getLayoutBounds());
if (!m_setTheta) calcAngularBounds(n);
// perform the layout
if (m_maxDepth > 0) layout(n, m_radiusInc, m_theta1, m_theta2);
// update properties of the root node
setX(n, null, m_origin.getX());
setY(n, null, m_origin.getY());
np.angle = m_theta2 - m_theta1;
}
