def kids( *z )
@kids = GraphViz::FamilyTree::Sibling.new( z, @persons )
return
if z.size == 1
@graph.add_edge( @node, z[0].node, "dir" => "none" )
else
cluster = @graph.add_graph( "#{@node.id}Kids" )
cluster["rank"] = "same"
last = nil
count = 0
add = (z.size-1)%2 * z.size/2 + (z.size-1)%2
link = (z.size/2)+1
z.each do |person|
count = count + 1
if count == add
middle = cluster.add_node( "#{@node.id}Kids", "shape" => "point" )
@graph.add_edge( @node, middle, "dir" => "none" )
unless last.nil?
cluster.add_edge( last, middle, "dir" => "none" )
end
last = middle
end
kid = cluster.add_node( "#{person.node.id}Kid", "shape" => "point" )
@graph.add_edge( kid, person.node, "dir" => "none" )
if add == 0 and count == link
@graph.add_edge( @node, kid, "dir" => "none" )
end
unless last.nil?
cluster.add_edge( last, kid, "dir" => "none" )
end
last = kid
end
end
end