code: @Pure
  	Iterator<N> nodeIterator(Rectangle2afp<?, ?, ?, ?, ?, ?> clipBounds) {
  		return new BroadFirstTreeIterator<>(this.tree, new FrustumSelector<P, N>(clipBounds));
  	}
docs: Replies the set of nodes that have an intersection with the specified rectangle.
  
  <p>This function replies the nodes with a broad-first iteration on the elements' tree.
  
  @param clipBounds is the bounds outside which the nodes will not be replied
  @return the nodes inside the specified bounds.