# File lib/graphviz/family_tree/person.rb, line 96 def is_widower_of( x ) #veuf node = @graph.add_node( "#{@node.id}And#{x.node.id}" ) node["shape"] = "point" node["color"] = "green" @graph.add_edge( @node, node, "dir" => "none", "color" => "green" ) @graph.add_edge( node, x.node, "dir" => "none", "color" => "green" ) @tree.add_couple( self, x, node ) end