/** * collect all nodes * * @param branch */ private void collectNodes(KNode branch) { Camera cam = engine.getCamera(); Iterator<KNode> nodeIterator = branch.getLeafs().iterator(); while (nodeIterator.hasNext()) { KNode n = nodeIterator.next(); n.updateMatrix(); if (n.isVisible()) { if (n instanceof VisualNode) { if (cam == null || (cam != null && cam.isVisible((VisualNode) n))) { visuals.add((VisualNode) n); } } collectNodes(n); } } }